From 6423baebd92e45c9be85157c443dff42e65d8d14 Mon Sep 17 00:00:00 2001
From: DanConwayDev <DanConwayDev@protonmail.com>
Date: Fri, 1 Sep 2023 00:00:00 +0000
Subject: refactor: rebuild app skeleton

Create skeleton for a complete rebuild of the prototype as a production
ready product.

Includes design patterns for:
 - dependency injection
 - unit testing with dependency mocking
 - integration testing
 - error handling
 - config storage

BREAKING-CHANGE: ground-up redesign with incompatible protocol standards
---
 .envrc                                           |    1 +
 .github/workflows/check_test_rustfmt_clippy.yaml |   40 +
 .github/workflows/release.yml                    |   45 +
 .gitignore                                       |    3 +-
 .vscode/settings.json                            |    6 +
 Cargo.lock                                       | 1620 ++++++----------------
 Cargo.toml                                       |   28 +-
 LICENSE.md                                       |   21 +
 README.md                                        |    3 +
 flake.lock                                       |  130 ++
 flake.nix                                        |   52 +
 git_hooks/commit-msg                             |   35 +
 git_hooks/pre-commit                             |   24 +
 rustfmt.toml                                     |   13 +
 shell.nix                                        |    1 +
 src/cli_interactor.rs                            |   34 +
 src/config.rs                                    |  152 ++
 src/key_handling/mod.rs                          |    1 +
 src/key_handling/users.rs                        |  124 ++
 src/login.rs                                     |   16 +
 src/main.rs                                      |   35 +
 src/sub_commands/login.rs                        |   11 +
 src/sub_commands/mod.rs                          |    1 +
 test_utils/Cargo.toml                            |   12 +
 test_utils/src/lib.rs                            |  280 ++++
 tests/login.rs                                   |  145 ++
 26 files changed, 1598 insertions(+), 1235 deletions(-)
 create mode 100644 .envrc
 create mode 100644 .github/workflows/check_test_rustfmt_clippy.yaml
 create mode 100644 .github/workflows/release.yml
 create mode 100644 .vscode/settings.json
 create mode 100644 LICENSE.md
 create mode 100644 README.md
 create mode 100644 flake.lock
 create mode 100644 flake.nix
 create mode 100755 git_hooks/commit-msg
 create mode 100755 git_hooks/pre-commit
 create mode 100644 rustfmt.toml
 create mode 100644 shell.nix
 create mode 100644 src/cli_interactor.rs
 create mode 100644 src/config.rs
 create mode 100644 src/key_handling/mod.rs
 create mode 100644 src/key_handling/users.rs
 create mode 100644 src/login.rs
 create mode 100644 src/main.rs
 create mode 100644 src/sub_commands/login.rs
 create mode 100644 src/sub_commands/mod.rs
 create mode 100644 test_utils/Cargo.toml
 create mode 100644 test_utils/src/lib.rs
 create mode 100644 tests/login.rs

diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..8392d15
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
\ No newline at end of file
diff --git a/.github/workflows/check_test_rustfmt_clippy.yaml b/.github/workflows/check_test_rustfmt_clippy.yaml
new file mode 100644
index 0000000..9cb63c1
--- /dev/null
+++ b/.github/workflows/check_test_rustfmt_clippy.yaml
@@ -0,0 +1,40 @@
+on: push
+
+name: check test rustfmt clippy
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - stable
+          - nightly
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+          components: rustfmt, clippy
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: build
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: -- -D warnings
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..7e64456
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,45 @@
+name: Release
+
+permissions:
+  contents: write
+
+on:
+  push:
+    tags:
+      - v[0-9]+.*
+
+jobs:
+  create-release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: taiki-e/create-gh-release-action@v1
+        with:
+          # (required) GitHub token for creating GitHub Releases.
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+  upload-assets:
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+      - uses: taiki-e/upload-rust-binary-action@v1
+        with:
+          # (required) Comma-separated list of binary names (non-extension portion of filename) to build and upload.
+          # Note that glob pattern is not supported yet.
+          bin: ngit
+          # (optional) On which platform to distribute the `.tar.gz` file.
+          # [default value: unix]
+          # [possible values: all, unix, windows, none]
+          tar: unix
+          # (optional) On which platform to distribute the `.zip` file.
+          # [default value: windows]
+          # [possible values: all, unix, windows, none]
+          zip: windows
+          # (required) GitHub token for uploading assets to GitHub Releases.
+          token: ${{ secrets.GITHUB_TOKEN }}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 58c050e..cb8c9e0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
-.ngit
+/target
+.direnv
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..17edf5d
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,6 @@
+{
+    "[rust]": {
+        "editor.defaultFormatter": "rust-lang.rust-analyzer",
+    },
+    "rust-analyzer.check.command": "clippy",
+}
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
index a37e592..3471bc3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3,42 +3,39 @@
 version = 3
 
 [[package]]
-name = "aes"
-version = "0.8.2"
+name = "aho-corasick"
+version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "433cfd6710c9986c576a25ca913c39d66a6474107b406f34f91d4a8923395241"
+checksum = "0c378d78423fdad8089616f827526ee33c19f2fddbd5de1629152c9593ba4783"
 dependencies = [
- "cfg-if",
- "cipher",
- "cpufeatures",
+ "memchr",
 ]
 
 [[package]]
 name = "anstream"
-version = "0.3.1"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6342bd4f5a1205d7f41e94a41a901f5647c938cdfa96036338e8533c9d6c2450"
+checksum = "b1f58811cfac344940f1a400b6e6231ce35171f614f26439e80f8c1465c5cc0c"
 dependencies = [
  "anstyle",
  "anstyle-parse",
  "anstyle-query",
  "anstyle-wincon",
  "colorchoice",
- "is-terminal",
  "utf8parse",
 ]
 
 [[package]]
 name = "anstyle"
-version = "1.0.0"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41ed9a86bf92ae6580e0a31281f65a1b1d867c0cc68d5346e2ae128dddfa6a7d"
+checksum = "15c4c2c83f81532e5845a733998b6971faca23490340a418e9b72a3ec9de12ea"
 
 [[package]]
 name = "anstyle-parse"
-version = "0.2.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e765fd216e48e067936442276d1d57399e37bce53c264d6fefbe298080cb57ee"
+checksum = "938874ff5980b03a87c5524b3ae5b59cf99b1d6bc836848df7bc5ada9643c333"
 dependencies = [
  "utf8parse",
 ]
@@ -54,94 +51,40 @@ dependencies = [
 
 [[package]]
 name = "anstyle-wincon"
-version = "1.0.1"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "180abfa45703aebe0093f79badacc01b8fd4ea2e35118747e5811127f926e188"
+checksum = "58f54d10c6dfa51283a066ceab3ec1ab78d13fae00aa49243a45e4571fb79dfd"
 dependencies = [
  "anstyle",
  "windows-sys 0.48.0",
 ]
 
 [[package]]
-name = "async_io_stream"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6d7b9decdf35d8908a7e3ef02f64c5e9b1695e230154c0e8de3969142d9b94c"
-dependencies = [
- "futures",
- "pharos",
- "rustc_version",
-]
-
-[[package]]
-name = "autocfg"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
-
-[[package]]
-name = "base64"
-version = "0.13.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
-
-[[package]]
-name = "base64"
-version = "0.21.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4a4ddaa51a5bc52a6948f74c06d20aaaddb71924eab79b8c97a8c556e942d6a"
-
-[[package]]
-name = "bech32"
-version = "0.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d86b93f97252c47b41663388e6d155714a9d0c398b99f1005cbc5f978b29f445"
-
-[[package]]
-name = "bip39"
-version = "2.0.0"
+name = "anyhow"
+version = "1.0.75"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93f2635620bf0b9d4576eb7bb9a38a55df78bd1205d26fa994b25911a69f212f"
-dependencies = [
- "bitcoin_hashes 0.11.0",
- "serde",
- "unicode-normalization",
-]
+checksum = "a4668cab20f66d8d020e1fbc0ebe47217433c1b6c8f2040faf858554e394ace6"
 
 [[package]]
-name = "bitcoin"
-version = "0.30.0"
+name = "assert_cmd"
+version = "2.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b36f4c848f6bd9ff208128f08751135846cc23ae57d66ab10a22efff1c675f3c"
+checksum = "88903cb14723e4d4003335bb7f8a14f27691649105346a0f0957466c096adfe6"
 dependencies = [
- "bech32",
- "bitcoin-private",
- "bitcoin_hashes 0.12.0",
- "hex_lit",
- "secp256k1",
+ "anstyle",
+ "bstr",
+ "doc-comment",
+ "predicates 3.0.3",
+ "predicates-core",
+ "predicates-tree",
+ "wait-timeout",
 ]
 
 [[package]]
-name = "bitcoin-private"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "73290177011694f38ec25e165d0387ab7ea749a4b81cd4c80dae5988229f7a57"
-
-[[package]]
-name = "bitcoin_hashes"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90064b8dee6815a6470d60bad07bbbaee885c0e12d04177138fa3291a01b7bc4"
-
-[[package]]
-name = "bitcoin_hashes"
-version = "0.12.0"
+name = "autocfg"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d7066118b13d4b20b23645932dfb3a81ce7e29f95726c2036fa33cd7b092501"
-dependencies = [
- "bitcoin-private",
- "serde",
-]
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
 [[package]]
 name = "bitflags"
@@ -150,57 +93,29 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
-name = "block-buffer"
-version = "0.10.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
-dependencies = [
- "generic-array",
-]
-
-[[package]]
-name = "block-padding"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a8894febbff9f758034a5b8e12d87918f56dfc64a8e1fe757d65e29041538d93"
-dependencies = [
- "generic-array",
-]
-
-[[package]]
-name = "bumpalo"
-version = "3.12.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b1ce199063694f33ffb7dd4e0ee620741495c32833cde5aa08f02a0bf96f0c8"
-
-[[package]]
-name = "byteorder"
-version = "1.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
-
-[[package]]
-name = "bytes"
-version = "1.4.0"
+name = "bitflags"
+version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89b2fd2a0dcf38d7971e2194b6b6eebab45ae01067456a7fd93d5547a61b70be"
+checksum = "b4682ae6287fcf752ecaabbfcc7b6f9b72aa33933dc23a554d853aea8eea8635"
 
 [[package]]
-name = "cbc"
-version = "0.1.2"
+name = "bstr"
+version = "1.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26b52a9543ae338f279b96b0b9fed9c8093744685043739079ce85cd58f289a6"
+checksum = "4c2f7349907b712260e64b0afe2f84692af14a454be26187d9df565c7f69266a"
 dependencies = [
- "cipher",
+ "memchr",
+ "regex-automata",
+ "serde",
 ]
 
 [[package]]
 name = "cc"
-version = "1.0.79"
+version = "1.0.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50d30906286121d95be3d479533b458f87493b30a4b5f79a607db8f5d11aa91f"
+checksum = "f1174fb0b6ec23863f8b971027804a42614e347eafb0a95bf0b12cdae21fc4d0"
 dependencies = [
- "jobserver",
+ "libc",
 ]
 
 [[package]]
@@ -209,57 +124,45 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
-[[package]]
-name = "cipher"
-version = "0.4.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "773f3b9af64447d2ce9850330c473515014aa235e6a783b02db81ff39e4a3dad"
-dependencies = [
- "crypto-common",
- "inout",
-]
-
 [[package]]
 name = "clap"
-version = "4.2.5"
+version = "4.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a1f23fa97e1d1641371b51f35535cb26959b8e27ab50d167a8b996b5bada819"
+checksum = "6a13b88d2c62ff462f88e4a121f17a82c1af05693a2f192b5c38d14de73c19f6"
 dependencies = [
  "clap_builder",
  "clap_derive",
- "once_cell",
 ]
 
 [[package]]
 name = "clap_builder"
-version = "4.2.5"
+version = "4.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0fdc5d93c358224b4d6867ef1356d740de2303e9892edc06c5340daeccd96bab"
+checksum = "2bb9faaa7c2ef94b2743a21f5a29e6f0010dff4caa69ac8e9d6cf8b6fa74da08"
 dependencies = [
  "anstream",
  "anstyle",
- "bitflags",
  "clap_lex",
  "strsim",
 ]
 
 [[package]]
 name = "clap_derive"
-version = "4.2.0"
+version = "4.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f9644cd56d6b87dbe899ef8b053e331c0637664e9e21a33dfcdc36093f5c5c4"
+checksum = "0862016ff20d69b84ef8247369fabf5c008a7417002411897d40ee1f4532b873"
 dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.15",
+ "syn 2.0.32",
 ]
 
 [[package]]
 name = "clap_lex"
-version = "0.4.1"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a2dd5a6fe8c6e3502f568a6353e5273bbb15193ad9a89e457b9970798efbea1"
+checksum = "cd7cc57abe963c6d3b9d8be5b06ba7c8957a930305ca90304f24ef040aa6f961"
 
 [[package]]
 name = "colorchoice"
@@ -268,47 +171,35 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
 
 [[package]]
-name = "confy"
-version = "0.5.1"
+name = "comma"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e37668cb35145dcfaa1931a5f37fde375eeae8068b4c0d2f289da28a270b2d2c"
-dependencies = [
- "directories",
- "serde",
- "thiserror",
- "toml",
-]
+checksum = "55b672471b4e9f9e95499ea597ff64941a309b2cdbffcc46f2cc5e2d971fd335"
 
 [[package]]
 name = "console"
-version = "0.15.5"
+version = "0.15.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3d79fbe8970a77e3e34151cc13d3b3e248aa0faaecb9f6091fa07ebefe5ad60"
+checksum = "c926e00cc70edefdc64d3a5ff31cc65bb97a3460097762bd23afb4d8145fccf8"
 dependencies = [
  "encode_unicode",
  "lazy_static",
  "libc",
  "unicode-width",
- "windows-sys 0.42.0",
-]
-
-[[package]]
-name = "cpufeatures"
-version = "0.2.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e4c1eaa2012c47becbbad2ab175484c2a84d1185b566fb2cc5b8707343dfe58"
-dependencies = [
- "libc",
+ "windows-sys 0.45.0",
 ]
 
 [[package]]
-name = "crypto-common"
-version = "0.1.6"
+name = "dashmap"
+version = "5.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
+checksum = "978747c1d849a7d2ee5e8adc0159961c48fb7e5db2f06af6723b80123bb53856"
 dependencies = [
- "generic-array",
- "typenum",
+ "cfg-if",
+ "hashbrown",
+ "lock_api",
+ "once_cell",
+ "parking_lot_core",
 ]
 
 [[package]]
@@ -324,61 +215,71 @@ dependencies = [
 ]
 
 [[package]]
-name = "digest"
-version = "0.10.6"
+name = "difflib"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8168378f4e5023e7218c89c891c0fd8ecdb5e5e4f18cb78f38cf245dd021e76f"
-dependencies = [
- "block-buffer",
- "crypto-common",
-]
+checksum = "6184e33543162437515c2e2b48714794e37845ec9851711914eec9d308f6ebe8"
 
 [[package]]
 name = "directories"
-version = "4.0.1"
+version = "5.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f51c5d4ddabd36886dd3e1438cb358cdcb0d7c499cb99cb4ac2e38e18b5cb210"
+checksum = "9a49173b84e034382284f27f1af4dcbbd231ffa358c0fe316541a7337f376a35"
 dependencies = [
  "dirs-sys",
 ]
 
 [[package]]
 name = "dirs-sys"
-version = "0.3.7"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b1d1d91c932ef41c0f2663aa8b0ca0342d444d842c06914aa0a7e352d0bada6"
+checksum = "520f05a5cbd335fae5a99ff7a6ab8627577660ee5cfd6a94a6a929b52ff0321c"
 dependencies = [
  "libc",
+ "option-ext",
  "redox_users",
- "winapi",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
-name = "either"
-version = "1.8.1"
+name = "doc-comment"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
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+checksum = "de78e66ac9061e030587b2a2e75cc88f22304913c907b11307bca737141230cb"
 dependencies = [
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+ "heck",
+ "proc-macro-error",
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+checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07"
+
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+checksum = "a357d28ed41a50f9c765dbfe56cbc04a64e53e5fc58ba79fbc34c10ef3df831f"
+
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@@ -397,27 +298,24 @@ dependencies = [
 
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-dependencies = [
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+checksum = "98de4bbd547a563b716d8dfa9aad1cb19bfab00f4fa09a6a4ed21dbcf44ce9c4"
+dependencies = [
+ "num-traits",
+]
 
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+checksum = "6c2141d6d6c8512188a7891b4b01590a45f6dac67afb4f255c4124dbb86d4eaa"
 
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@@ -467,17 +365,6 @@ version = "0.3.28"
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@@ -499,7 +386,6 @@ dependencies = [
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- "futures-macro",
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@@ -508,600 +394,303 @@ dependencies = [
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- "js-sys",
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- "wasm-bindgen",
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-dependencies = [
- "bitflags",
- "libc",
- "libgit2-sys",
- "log",
- "openssl-probe",
- "openssl-sys",
- "url",
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+checksum = "2c6201b9ff9fd90a5a3bac2e56a830d0caa509576f0e503818ee82c181b3437a"
 
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- "futures-util",
- "http",
- "indexmap",
- "slab",
- "tokio",
- "tokio-util",
- "tracing",
+ "either",
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+ "autocfg",
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- "bytes",
- "fnv",
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+ "autocfg",
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- "bytes",
- "http",
- "pin-project-lite",
+ "cfg-if",
+ "downcast",
+ "fragile",
+ "lazy_static",
+ "mockall_derive",
+ "predicates 2.1.5",
+ "predicates-tree",
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- "httpdate",
- "itoa",
- "pin-project-lite",
- "socket2",
- "tokio",
- "tower-service",
- "tracing",
- "want",
+ "anyhow",
+ "assert_cmd",
+ "clap",
+ "dialoguer",
+ "directories",
+ "duplicate",
+ "mockall",
+ "serde",
+ "serde_json",
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- "hyper",
- "rustls",
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+ "cfg-if",
+ "libc",
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+ "pin-utils",
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 dependencies = [
- "cfg-if",
- "js-sys",
- "wasm-bindgen",
- "web-sys",
+ "lock_api",
+ "parking_lot_core",
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+ "cfg-if",
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+ "windows-targets 0.48.5",
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+ "difflib",
+ "float-cmp",
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+ "itertools",
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+ "predicates-core",
+ "termtree",
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- "rustc_version",
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+ "quote",
+ "syn 1.0.109",
+ "version_check",
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+ "bitflags 1.3.2",
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 checksum = "567664f262709473930a4bf9e51bf2ebf3348f2e748ccc50dea20646858f8f29"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
 ]
 
 [[package]]
@@ -1125,178 +714,96 @@ dependencies = [
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- "url",
- "wasm-bindgen",
- "wasm-bindgen-futures",
- "web-sys",
- "webpki-roots",
- "winreg",
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
 ]
 
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- "cc",
- "libc",
- "once_cell",
- "spin",
- "untrusted",
- "web-sys",
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+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
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 dependencies = [
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+ "comma",
+ "nix",
+ "regex",
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+ "thiserror",
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 [[package]]
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 dependencies = [
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- "syn 2.0.15",
+ "syn 2.0.32",
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 [[package]]
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@@ -1304,26 +811,28 @@ dependencies = [
 ]
 
 [[package]]
-name = "serde_urlencoded"
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+name = "serial_test"
+version = "2.0.0"
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-checksum = "d3491c14715ca2294c4d6a88f15e84739788c1d030eed8c110436aafdaa2f3fd"
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 dependencies = [
- "form_urlencoded",
- "itoa",
- "ryu",
- "serde",
+ "dashmap",
+ "futures",
+ "lazy_static",
+ "log",
+ "parking_lot",
+ "serial_test_derive",
 ]
 
 [[package]]
-name = "sha1"
-version = "0.10.5"
+name = "serial_test_derive"
+version = "2.0.0"
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-checksum = "f04293dc80c3993519f2d7f6f511707ee7094fe0c6d3406feb330cdb3540eba3"
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 dependencies = [
- "cfg-if",
- "cpufeatures",
- "digest",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.32",
 ]
 
 [[package]]
@@ -1334,28 +843,27 @@ checksum = "24188a676b6ae68c3b2cb3a01be17fbf7240ce009799bb56d5b1409051e78fde"
 
 [[package]]
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+checksum = "8f92a496fb766b417c996b9c5e57daf2f7ad3b0bebe1ccfca4856390e3d3bb67"
 dependencies = [
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 [[package]]
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-dependencies = [
- "libc",
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+checksum = "62bb4feee49fdd9f707ef802e22365a35de4b7b299de4763d44bfea899442ff9"
 
 [[package]]
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+checksum = "55ff8ef943b384c414f54aefa961dd2bd853add74ec75e7ac74cf91dba62bcfa"
+dependencies = [
+ "vte",
+]
 
 [[package]]
 name = "strsim"
@@ -1376,9 +884,9 @@ dependencies = [
 
 [[package]]
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-version = "2.0.15"
+version = "2.0.32"
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-checksum = "a34fcf3e8b60f57e6a14301a2e916d323af98b0ea63c599441eec8558660c822"
+checksum = "239814284fd6f1a4ffe4ca893952cdd93c224b6a1571c9a9eadd670295c0c9e2"
 dependencies = [
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+ "windows-sys 0.48.0",
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+ "strip-ansi-escapes",
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- "windows-sys 0.48.0",
+ "thiserror-impl",
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-
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-dependencies = [
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-]
+checksum = "301abaae475aa91687eb82514b328ab47a211a533026cb25fc3e519b86adfc3c"
 
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-
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 dependencies = [
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- "wasm-bindgen-macro-support",
+ "utf8parse",
+ "vte_generate_state_changes",
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 dependencies = [
- "winapi-i686-pc-windows-gnu",
- "winapi-x86_64-pc-windows-gnu",
+ "libc",
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 [[package]]
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- "windows_x86_64_gnu 0.42.2",
- "windows_x86_64_gnullvm 0.42.2",
- "windows_x86_64_msvc 0.42.2",
-]
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
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@@ -1814,7 +1018,7 @@ version = "0.48.0"
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 checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
 dependencies = [
- "windows-targets 0.48.0",
+ "windows-targets 0.48.5",
 ]
 
 [[package]]
@@ -1834,17 +1038,17 @@ dependencies = [
 
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-version = "0.48.0"
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 dependencies = [
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- "windows_x86_64_gnu 0.48.0",
- "windows_x86_64_gnullvm 0.48.0",
- "windows_x86_64_msvc 0.48.0",
+ "windows_aarch64_gnullvm 0.48.5",
+ "windows_aarch64_msvc 0.48.5",
+ "windows_i686_gnu 0.48.5",
+ "windows_i686_msvc 0.48.5",
+ "windows_x86_64_gnu 0.48.5",
+ "windows_x86_64_gnullvm 0.48.5",
+ "windows_x86_64_msvc 0.48.5",
 ]
 
 [[package]]
@@ -1855,9 +1059,9 @@ checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
 
 [[package]]
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 [[package]]
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@@ -1867,9 +1071,9 @@ checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
 
 [[package]]
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-checksum = "b2ef27e0d7bdfcfc7b868b317c1d32c641a6fe4629c171b8928c7b08d98d7cf3"
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@@ -1879,9 +1083,9 @@ checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
 
 [[package]]
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-checksum = "622a1962a7db830d6fd0a69683c80a18fda201879f0f447f065a3b7467daa241"
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@@ -1891,9 +1095,9 @@ checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
 
 [[package]]
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-checksum = "4542c6e364ce21bf45d69fdd2a8e455fa38d316158cfd43b3ac1c5b1b19f8e00"
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 [[package]]
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@@ -1903,9 +1107,9 @@ checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
 
 [[package]]
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 [[package]]
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@@ -1915,9 +1119,9 @@ checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
 
 [[package]]
 name = "windows_x86_64_gnullvm"
-version = "0.48.0"
+version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"
+checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
 
 [[package]]
 name = "windows_x86_64_msvc"
@@ -1927,37 +1131,9 @@ checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
 
 [[package]]
 name = "windows_x86_64_msvc"
-version = "0.48.0"
+version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
-
-[[package]]
-name = "winreg"
-version = "0.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
-dependencies = [
- "winapi",
-]
-
-[[package]]
-name = "ws_stream_wasm"
-version = "0.7.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7999f5f4217fe3818726b66257a4475f71e74ffd190776ad053fa159e50737f5"
-dependencies = [
- "async_io_stream",
- "futures",
- "js-sys",
- "log",
- "pharos",
- "rustc_version",
- "send_wrapper",
- "thiserror",
- "wasm-bindgen",
- "wasm-bindgen-futures",
- "web-sys",
-]
+checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
 
 [[package]]
 name = "zeroize"
diff --git a/Cargo.toml b/Cargo.toml
index ac3e916..e745441 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "ngit"
 version = "0.0.1"
 edition = "2021"
-description = "a proof of concept cli for a nostr based github alternative"
+description = "cli for code collaboration over nostr"
 authors = ["DanConwayDev <DanConwayDev@protonmail.com>"]
 readme = "README.md"
 homepage = "https://github.com/DanConwayDev/ngit-cli"
@@ -12,17 +12,21 @@ keywords = ["nostr", "git"]
 categories = ["command-line-utilities","git"]
 
 [dependencies]
-clap = { version = "4.1.6", features = ["derive"] }
-nostr = { version = "0.21" }
-nostr-sdk = { version = "0.21", features = ["blocking"] }
-serde = { version = "1.0.147", features = ["derive"] }
-serde_json = "1.0.91"
+anyhow = "1.0.75"
+clap = { version = "4.3.19", features = ["derive"] }
 dialoguer = "0.10.4"
-indicatif = "0.17.3"
-thiserror = "1.0"
-confy = "0.5.1"
-git2 = "0.17.1"
+directories = "5.0.1"
+serde = { version = "1.0.181", features = ["derive"] }
+serde_json = "1.0.105"
 
-[patch.crates-io]
-nostr = { git = 'https://github.com/DanConwayDev/nostr.git', features = ["blocking"] }
+[dev-dependencies]
+assert_cmd = "2.0.12"
+duplicate = "1.0.0"
+mockall = "0.11.4"
+serial_test = "2.0.0"
+test_utils = { path = "test_utils" }
 
+[workspace]
+members = [
+    "test_utils",
+]
diff --git a/LICENSE.md b/LICENSE.md
new file mode 100644
index 0000000..dfdef63
--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2023 DanConwayDev
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..b9aacd7
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# ngit
+
+cli for code collaboration over nostr
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..29425ed
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,130 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1692799911,
+        "narHash": "sha256-3eihraek4qL744EvQXsK1Ha6C3CR7nnT8X2qWap4RNk=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "f9e7cf818399d17d347f847525c5a5a8032e4e44",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1681202837,
+        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1694183432,
+        "narHash": "sha256-YyPGNapgZNNj51ylQMw9lAgvxtM2ai1HZVUu3GS8Fng=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "db9208ab987cdeeedf78ad9b4cf3c55f5ebd269b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1681358109,
+        "narHash": "sha256-eKyxW4OohHQx9Urxi7TQlFBTDWII+F+x2hklDOQPB50=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "96ba1c52e54e74c3197f4d43026b3f3d92e83ff9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1694398298,
+        "narHash": "sha256-Hi904+2V5DJhFdEy9DcARSRrGJOlYSILHUC6CgTtuZU=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "6c520f2e31f4bebeb29cc4563543de7187013575",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..7c36e2d
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,52 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, rust-overlay, flake-utils, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs {
+          inherit system overlays;
+        };
+      in
+      with pkgs;
+      {
+        devShells.default = mkShell {
+
+          nativeBuildInputs = [
+            # stable to be introduced when the following issue is resolved
+            # https://github.com/oxalica/rust-overlay/issues/136
+            # rust-bin.stable.latest.default
+            # nightly for rustfmt
+            (
+              rust-bin.selectLatestNightlyWith (toolchain: toolchain.default.override {
+                extensions = [
+                  "rust-src"
+                  "rustfmt"
+                  "clippy"
+                ];
+              })
+            )
+          ];
+
+          buildInputs = [
+            rust-analyzer
+            gitlint
+          ];
+          shellHook = ''
+            # auto-install git hooks
+            dot_git="$(git rev-parse --git-common-dir)"
+            if [[ ! -d "$dot_git/hooks" ]]; then mkdir "$dot_git/hooks"; fi
+            for hook in git_hooks/* ; do ln -sf "$(pwd)/$hook" "$dot_git/hooks/" ; done
+
+            # For rust-analyzer 'hover' tooltips to work.
+            export RUST_SRC_PATH=${pkgs.rustPlatform.rustLibSrc}
+          '';
+        };
+      }
+    );
+}
diff --git a/git_hooks/commit-msg b/git_hooks/commit-msg
new file mode 100755
index 0000000..e754e8d
--- /dev/null
+++ b/git_hooks/commit-msg
@@ -0,0 +1,35 @@
+#!/bin/sh
+### gitlint commit-msg hook start ###
+
+# Determine whether we have a tty available by trying to access it.
+# This allows us to deal with UI based gitclient's like Atlassian SourceTree.
+# NOTE: "exec < /dev/tty" sets stdin to the keyboard
+stdin_available=1
+(exec < /dev/tty) 2> /dev/null || stdin_available=0
+
+if [ $stdin_available -eq 1 ]; then
+    # Now that we know we have a functional tty, set stdin to it so we can ask the user questions :-)
+    exec < /dev/tty
+
+    # On Windows, we need to explicitly set our stdout to the tty to make terminal editing work (e.g. vim)
+    # See SO for windows detection in bash (slight modified to work on plain shell (not bash)): 
+    # https://stackoverflow.com/questions/394230/how-to-detect-the-os-from-a-bash-script
+    if [ "$OSTYPE" = "cygwin" ] || [ "$OSTYPE" = "msys" ] || [ "$OSTYPE" = "win32" ]; then
+        exec > /dev/tty
+    fi
+fi
+
+gitlint --staged --msg-filename "$1" run-hook
+exit_code=$?
+
+# If we fail to find the gitlint binary (command not found), let's retry by executing as a python module.
+# This is the case for Atlassian SourceTree, where $PATH deviates from the user's shell $PATH.
+if [ $exit_code -eq 127 ]; then
+    echo "Fallback to python module execution"
+    python -m gitlint.cli --staged --msg-filename "$1" run-hook
+    exit_code=$?
+fi
+
+exit $exit_code
+
+### gitlint commit-msg hook end ###
diff --git a/git_hooks/pre-commit b/git_hooks/pre-commit
new file mode 100755
index 0000000..63b191d
--- /dev/null
+++ b/git_hooks/pre-commit
@@ -0,0 +1,24 @@
+#!/bin/sh
+
+set -eu
+
+if ! cargo fmt -- --check
+then
+    echo "There are some code style issues."
+    echo "Run cargo fmt first."
+    exit 1
+fi
+
+if ! cargo clippy --all-targets -- -D warnings
+then
+    echo "There are some clippy issues."
+    exit 1
+fi
+
+if ! cargo test
+then
+    echo "There are some test issues."
+    exit 1
+fi
+
+exit 0
\ No newline at end of file
diff --git a/rustfmt.toml b/rustfmt.toml
new file mode 100644
index 0000000..bcf7279
--- /dev/null
+++ b/rustfmt.toml
@@ -0,0 +1,13 @@
+unstable_features = true
+version = "Two"
+
+# Imports
+imports_granularity = "Crate"
+group_imports = "StdExternalCrate"
+
+# Consistency
+newline_style = "Unix"
+
+# Comments
+wrap_comments = true
+format_code_in_doc_comments = true
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..8745f50
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1 @@
+(builtins.getFlake ("git+file://" + toString ./.)).devShells.${builtins.currentSystem}.default
diff --git a/src/cli_interactor.rs b/src/cli_interactor.rs
new file mode 100644
index 0000000..2f28aee
--- /dev/null
+++ b/src/cli_interactor.rs
@@ -0,0 +1,34 @@
+use anyhow::{bail, Result};
+use dialoguer::{theme::ColorfulTheme, Input};
+#[cfg(test)]
+use mockall::*;
+
+#[derive(Default)]
+pub struct Interactor {
+    theme: ColorfulTheme,
+}
+
+#[cfg_attr(test, automock)]
+pub trait InteractorPrompt {
+    fn input(&self, parms: PromptInputParms) -> Result<String>;
+}
+impl InteractorPrompt for Interactor {
+    fn input(&self, parms: PromptInputParms) -> Result<String> {
+        let input: String = Input::with_theme(&self.theme)
+            .with_prompt(parms.prompt)
+            .interact_text()?;
+        Ok(input)
+    }
+}
+
+#[derive(Default)]
+pub struct PromptInputParms {
+    pub prompt: String,
+}
+
+impl PromptInputParms {
+    pub fn with_prompt<S: Into<String>>(mut self, prompt: S) -> Self {
+        self.prompt = prompt.into();
+        self
+    }
+}
diff --git a/src/config.rs b/src/config.rs
new file mode 100644
index 0000000..b26dea0
--- /dev/null
+++ b/src/config.rs
@@ -0,0 +1,152 @@
+use std::{fs::File, io::BufReader};
+
+use anyhow::{anyhow, Context, Result};
+use directories::ProjectDirs;
+#[cfg(test)]
+use mockall::*;
+use serde::{self, Deserialize, Serialize};
+
+#[derive(Default)]
+#[allow(clippy::module_name_repetitions)]
+pub struct ConfigManager;
+
+#[cfg_attr(test, automock)]
+#[allow(clippy::module_name_repetitions)]
+pub trait ConfigManagement {
+    fn load(&self) -> Result<MyConfig>;
+    fn save(&self, cfg: &MyConfig) -> Result<()>;
+}
+
+pub fn get_dirs() -> Result<ProjectDirs> {
+    ProjectDirs::from("", "CodeCollaboration", "ngit").ok_or(anyhow!(
+        "should find operating system home directories with rust-directories crate"
+    ))
+}
+
+impl ConfigManagement for ConfigManager {
+    fn load(&self) -> Result<MyConfig> {
+        let config_path = get_dirs()?.config_dir().join("config.json");
+        if config_path.exists() {
+            let file =
+                File::open(config_path).context("should open application configuration file")?;
+            let reader = BufReader::new(file);
+            let config: MyConfig = serde_json::from_reader(reader)
+                .context("should read config from config file with serde_json")?;
+            Ok(config)
+        } else {
+            Ok(MyConfig::default())
+        }
+    }
+    fn save(&self, cfg: &MyConfig) -> Result<()> {
+        let dirs = get_dirs()?;
+        let config_path = dirs.config_dir().join("config.json");
+        let file = if config_path.exists() {
+            std::fs::OpenOptions::new()
+                .create(true)
+                .write(true)
+                .truncate(true)
+                .open(config_path)
+                .context(
+                    "should open application configuration file with write and truncate options",
+                )?
+        } else {
+            std::fs::create_dir_all(dirs.config_dir())
+                .context("should create application config directories")?;
+            std::fs::File::create(config_path).context("should create application config file")?
+        };
+        serde_json::to_writer_pretty(file, cfg)
+            .context("should write configuration to config file with serde_json")
+    }
+}
+
+#[derive(Serialize, Deserialize, Clone, Default, Debug, PartialEq, Eq)]
+#[allow(clippy::module_name_repetitions)]
+pub struct MyConfig {
+    pub version: u8,
+    pub users: Vec<UserRef>,
+}
+
+#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, Eq)]
+pub struct UserRef {
+    pub nsec: String,
+}
+
+#[cfg(test)]
+mod tests {
+    use anyhow::Result;
+    use serial_test::serial;
+    use test_utils::*;
+
+    use super::*;
+
+    mod load {
+        use super::*;
+
+        #[test]
+        #[serial]
+        fn when_config_file_doesnt_exist_defaults_are_returned() -> Result<()> {
+            with_fresh_config(|| {
+                assert_eq!(ConfigManager.load()?, MyConfig::default());
+
+                Ok(())
+            })
+        }
+
+        #[test]
+        #[serial]
+        fn when_config_file_exists_it_is_returned() -> Result<()> {
+            with_fresh_config(|| {
+                let c = ConfigManager;
+                let new_config = MyConfig {
+                    version: 255,
+                    ..MyConfig::default()
+                };
+                c.save(&new_config)?;
+                assert_eq!(c.load()?, new_config);
+
+                Ok(())
+            })
+        }
+    }
+
+    mod save {
+        use super::*;
+
+        #[test]
+        #[serial]
+        fn when_config_file_doesnt_config_is_saved() -> Result<()> {
+            with_fresh_config(|| {
+                let c = ConfigManager;
+                let new_config = MyConfig {
+                    version: 255,
+                    ..MyConfig::default()
+                };
+                c.save(&new_config)?;
+                assert_eq!(c.load()?, new_config);
+
+                Ok(())
+            })
+        }
+
+        #[test]
+        #[serial]
+        fn when_config_file_exists_new_config_is_saved() -> Result<()> {
+            with_fresh_config(|| {
+                let c = ConfigManager;
+                let config = MyConfig {
+                    version: 255,
+                    ..MyConfig::default()
+                };
+                c.save(&config)?;
+                let new_config = MyConfig {
+                    version: 254,
+                    ..MyConfig::default()
+                };
+                c.save(&new_config)?;
+                assert_eq!(c.load()?, new_config);
+
+                Ok(())
+            })
+        }
+    }
+}
diff --git a/src/key_handling/mod.rs b/src/key_handling/mod.rs
new file mode 100644
index 0000000..913bd46
--- /dev/null
+++ b/src/key_handling/mod.rs
@@ -0,0 +1 @@
+pub mod users;
diff --git a/src/key_handling/users.rs b/src/key_handling/users.rs
new file mode 100644
index 0000000..bd1748a
--- /dev/null
+++ b/src/key_handling/users.rs
@@ -0,0 +1,124 @@
+use anyhow::{Context, Result};
+
+use crate::{
+    cli_interactor::{Interactor, InteractorPrompt, PromptInputParms},
+    config::{ConfigManagement, ConfigManager, MyConfig, UserRef},
+};
+
+#[derive(Default)]
+pub struct UserManager {
+    config_manager: ConfigManager,
+    interactor: Interactor,
+}
+
+pub trait UserManagement {
+    fn add(&self, nsec: &Option<String>) -> Result<()>;
+}
+
+#[cfg(test)]
+use duplicate::duplicate_item;
+#[cfg_attr(test, duplicate_item(UserManager; [UserManager]; [self::tests::MockUserManager]))]
+impl UserManagement for UserManager {
+    fn add(&self, nsec: &Option<String>) -> Result<()> {
+        let nsec = match nsec.clone() {
+            Some(nsec) => nsec,
+            None => self
+                .interactor
+                .input(
+                    PromptInputParms::default().with_prompt("login with nsec (or hex private key)"),
+                )
+                .context("failed to get nsec input from interactor.input")?,
+        };
+
+        self.config_manager
+            .save(&MyConfig {
+                users: vec![UserRef {
+                    nsec: nsec.to_string(),
+                }],
+                ..MyConfig::default()
+            })
+            .context("failed to save application configuration with new user details in")?;
+
+        println!("logged in as {nsec}");
+
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use test_utils::*;
+
+    use super::*;
+    use crate::{cli_interactor::MockInteractorPrompt, config::MockConfigManagement};
+
+    #[derive(Default)]
+    pub struct MockUserManager {
+        pub config_manager: MockConfigManagement,
+        pub interactor: MockInteractorPrompt,
+    }
+
+    mod add {
+        use super::*;
+
+        impl MockUserManager {
+            fn add_return_expected_responses(mut self) -> Self {
+                self.config_manager
+                    .expect_load()
+                    .returning(|| Ok(MyConfig::default()));
+                self.config_manager.expect_save().returning(|_| Ok(()));
+                self.interactor
+                    .expect_input()
+                    .returning(|_| Ok(TEST_KEY_1_NSEC.into()));
+                self
+            }
+        }
+
+        mod when_nsec_is_passed {
+            use super::*;
+
+            #[test]
+            fn user_isnt_prompted() {
+                let mut m = MockUserManager::default().add_return_expected_responses();
+                m.interactor = MockInteractorPrompt::default();
+                m.interactor.expect_input().never();
+
+                let _ = m.add(&Some(TEST_KEY_1_NSEC.into()));
+            }
+        }
+
+        mod when_no_nsec_is_passed {
+            use super::*;
+
+            #[test]
+            fn prompt_for_nsec() {
+                let mut m = MockUserManager::default().add_return_expected_responses();
+
+                m.interactor = MockInteractorPrompt::new();
+                m.interactor
+                    .expect_input()
+                    .once()
+                    .withf(|p| p.prompt.eq("login with nsec (or hex private key)"))
+                    .returning(|_| Ok(TEST_KEY_1_NSEC.into()));
+
+                let _ = m.add(&None);
+            }
+
+            #[test]
+            fn stored_in_config() {
+                let mut m = MockUserManager::default().add_return_expected_responses();
+
+                m.config_manager = MockConfigManagement::new();
+                m.config_manager
+                    .expect_load()
+                    .returning(|| Ok(MyConfig::default()));
+                m.config_manager
+                    .expect_save()
+                    .withf(|cfg| cfg.users.len().eq(&1) && cfg.users[0].nsec.eq(TEST_KEY_1_NSEC))
+                    .returning(|_| Ok(()));
+
+                let _ = m.add(&None);
+            }
+        }
+    }
+}
diff --git a/src/login.rs b/src/login.rs
new file mode 100644
index 0000000..da19a75
--- /dev/null
+++ b/src/login.rs
@@ -0,0 +1,16 @@
+use anyhow::{Context, Result};
+
+use crate::{
+    config::{ConfigManagement, ConfigManager},
+    key_handling::users::{UserManagement, UserManager},
+};
+
+pub fn launch(nsec: &Option<String>) -> Result<()> {
+    let cfg = ConfigManager
+        .load()
+        .context("failed to load application config")?;
+    if !cfg.users.is_empty() {
+        println!("logged in as {}", cfg.users[0].nsec);
+    }
+    UserManager::default().add(nsec)
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..d16f1a3
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,35 @@
+#![cfg_attr(not(test), warn(clippy::pedantic))]
+#![cfg_attr(not(test), warn(clippy::expect_used))]
+
+use anyhow::Result;
+use clap::{Parser, Subcommand};
+
+mod cli_interactor;
+mod config;
+mod key_handling;
+mod login;
+mod sub_commands;
+
+#[derive(Parser)]
+#[command(author, version, about, long_about = None)]
+#[command(propagate_version = true)]
+pub struct Cli {
+    #[command(subcommand)]
+    command: Commands,
+    /// nsec or hex private key
+    #[arg(short, long)]
+    nsec: Option<String>,
+}
+
+#[derive(Subcommand)]
+enum Commands {
+    /// save encrypted nsec for future use
+    Login(sub_commands::login::SubCommandArgs),
+}
+
+fn main() -> Result<()> {
+    let cli = Cli::parse();
+    match &cli.command {
+        Commands::Login(args) => sub_commands::login::launch(&cli, args),
+    }
+}
diff --git a/src/sub_commands/login.rs b/src/sub_commands/login.rs
new file mode 100644
index 0000000..d61f578
--- /dev/null
+++ b/src/sub_commands/login.rs
@@ -0,0 +1,11 @@
+use anyhow::Result;
+use clap;
+
+use crate::{login, Cli};
+
+#[derive(clap::Args)]
+pub struct SubCommandArgs;
+
+pub fn launch(args: &Cli, _command_args: &SubCommandArgs) -> Result<()> {
+    login::launch(&args.nsec)
+}
diff --git a/src/sub_commands/mod.rs b/src/sub_commands/mod.rs
new file mode 100644
index 0000000..320cbbb
--- /dev/null
+++ b/src/sub_commands/mod.rs
@@ -0,0 +1 @@
+pub mod login;
diff --git a/test_utils/Cargo.toml b/test_utils/Cargo.toml
new file mode 100644
index 0000000..e1f6090
--- /dev/null
+++ b/test_utils/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "test_utils"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+anyhow = "1.0.75"
+assert_cmd = "2.0.12"
+dialoguer = "0.10.4"
+directories = "5.0.1"
+rexpect = { git = "https://github.com/phaer/rexpect.git", branch= "skip-ansi-escape-codes" }
+strip-ansi-escapes = "0.2.0"
diff --git a/test_utils/src/lib.rs b/test_utils/src/lib.rs
new file mode 100644
index 0000000..495e8d2
--- /dev/null
+++ b/test_utils/src/lib.rs
@@ -0,0 +1,280 @@
+use std::ffi::OsStr;
+
+use anyhow::{ensure, Context, Result};
+use dialoguer::theme::{ColorfulTheme, Theme};
+use directories::ProjectDirs;
+use rexpect::session::{Options, PtySession};
+use strip_ansi_escapes::strip_str;
+
+pub static TEST_KEY_1_NSEC: &str =
+    "nsec1ppsg5sm2aexq06juxmu9evtutr6jkwkhp98exxxvwamhru9lyx9s3rwseq";
+
+pub static TEST_KEY_2_NSEC: &str =
+    "nsec1ypglg6nj6ep0g2qmyfqcv2al502gje3jvpwye6mthmkvj93tqkesknv6qm";
+
+/// wrapper for a cli testing tool - currently wraps rexpect and dialoguer
+///
+/// 1. allow more accurate articulation of expected behaviour
+/// 2. provide flexibility to swap rexpect for a tool that better maps to
+///    expected behaviour
+/// 3. provides flexability to swap dialoguer with another cli interaction tool
+pub struct CliTester {
+    rexpect_session: PtySession,
+    formatter: ColorfulTheme,
+}
+
+impl CliTester {
+    pub fn expect_input(&mut self, prompt: &str) -> Result<CliTesterInputPrompt> {
+        let mut i = CliTesterInputPrompt {
+            tester: self,
+            prompt: prompt.to_string(),
+        };
+        i.prompt(false).context("initial input prompt")?;
+        Ok(i)
+    }
+
+    pub fn expect_input_eventually(&mut self, prompt: &str) -> Result<CliTesterInputPrompt> {
+        let mut i = CliTesterInputPrompt {
+            tester: self,
+            prompt: prompt.to_string(),
+        };
+        i.prompt(true).context("initial input prompt")?;
+        Ok(i)
+    }
+}
+
+pub struct CliTesterInputPrompt<'a> {
+    tester: &'a mut CliTester,
+    prompt: String,
+}
+
+impl CliTesterInputPrompt<'_> {
+    fn prompt(&mut self, eventually: bool) -> Result<&mut Self> {
+        let mut s = String::new();
+        self.tester
+            .formatter
+            .format_prompt(&mut s, self.prompt.as_str())
+            .expect("diagluer theme formatter should succeed");
+        s.push(' ');
+
+        ensure!(
+            s.contains(self.prompt.as_str()),
+            "dialoguer must be broken as formatted prompt success doesnt contain prompt"
+        );
+
+        if eventually {
+            self.tester
+                .expect_eventually(sanatize(s).as_str())
+                .context("expect input prompt eventually")?;
+        } else {
+            self.tester
+                .expect(sanatize(s).as_str())
+                .context("expect input prompt")?;
+        }
+
+        Ok(self)
+    }
+
+    pub fn succeeds_with(&mut self, input: &str) -> Result<&mut Self> {
+        self.tester.send_line(input)?;
+        self.tester
+            .expect(input)
+            .context("expect input to be printed")?;
+        self.tester
+            .expect("\r")
+            .context("expect new line after input to be printed")?;
+
+        let mut s = String::new();
+        self.tester
+            .formatter
+            .format_input_prompt_selection(&mut s, self.prompt.as_str(), input)
+            .expect("diagluer theme formatter should succeed");
+        if !s.contains(self.prompt.as_str()) {
+            panic!("dialoguer must be broken as formatted prompt success doesnt contain prompt");
+        }
+        let formatted_success = format!("{}\r\n", sanatize(s));
+
+        self.tester
+            .expect(formatted_success.as_str())
+            .context("expect immediate prompt success")?;
+        Ok(self)
+    }
+}
+
+impl CliTester {
+    pub fn new<I, S>(args: I) -> Self
+    where
+        I: IntoIterator<Item = S>,
+        S: AsRef<OsStr>,
+    {
+        Self {
+            rexpect_session: rexpect_with(args).expect("rexpect to spawn new process"),
+            formatter: ColorfulTheme::default(),
+        }
+    }
+
+    pub fn restart_with<I, S>(&mut self, args: I) -> &mut Self
+    where
+        I: IntoIterator<Item = S>,
+        S: AsRef<OsStr>,
+    {
+        self.rexpect_session
+            .process
+            .exit()
+            .expect("process to exit");
+        self.rexpect_session = rexpect_with(args).expect("rexpect to spawn new process");
+        self
+    }
+
+    pub fn exit(&mut self) -> Result<()> {
+        match self
+            .rexpect_session
+            .process
+            .exit()
+            .context("expect proccess to exit")
+        {
+            Ok(_) => Ok(()),
+            Err(e) => Err(e),
+        }
+    }
+
+    /// returns what came before expected message
+    pub fn expect_eventually(&mut self, message: &str) -> Result<String> {
+        let before = self
+            .rexpect_session
+            .exp_string(message)
+            .context("exp_string failed")?;
+        Ok(before)
+    }
+
+    pub fn expect(&mut self, message: &str) -> Result<&mut Self> {
+        let before = self.expect_eventually(message)?;
+        ensure!(
+            before.is_empty(),
+            format!(
+                "expected message \"{}\". but got \"{}\" first.",
+                message.replace('\n', "\\n").replace('\r', "\\r"),
+                before.replace('\n', "\\n").replace('\r', "\\r"),
+            ),
+        );
+        Ok(self)
+    }
+
+    pub fn expect_end(&mut self) -> Result<()> {
+        let before = self
+            .rexpect_session
+            .exp_eof()
+            .context("expected immediate end but got timed out")?;
+        ensure!(
+            before.is_empty(),
+            format!(
+                "expected immediate end but got '{}' first.",
+                before.replace('\n', "\\n").replace('\r', "\\r"),
+            ),
+        );
+        Ok(())
+    }
+
+    pub fn expect_end_with(&mut self, message: &str) -> Result<()> {
+        let before = self
+            .rexpect_session
+            .exp_eof()
+            .context("expected immediate end but got timed out")?;
+        assert_eq!(before, message);
+        Ok(())
+    }
+    pub fn expect_end_eventually(&mut self) -> Result<String> {
+        self.rexpect_session
+            .exp_eof()
+            .context("expected end eventually but got timed out")
+    }
+
+    pub fn expect_end_eventually_with(&mut self, message: &str) -> Result<()> {
+        self.expect_eventually(message)?;
+        self.expect_end()
+    }
+
+    fn send_line(&mut self, line: &str) -> Result<()> {
+        self.rexpect_session
+            .send_line(line)
+            .context("send_line failed")?;
+        Ok(())
+    }
+}
+
+/// sanatize unicode string for rexpect
+fn sanatize(s: String) -> String {
+    // remove ansi codes as they don't work with rexpect
+    strip_str(s)
+        // sanatize unicode rexpect issue 105 is resolved https://github.com/rust-cli/rexpect/issues/105
+        .as_bytes()
+        .iter()
+        .map(|c| *c as char)
+        .collect::<String>()
+}
+
+pub fn rexpect_with<I, S>(args: I) -> Result<PtySession, rexpect::error::Error>
+where
+    I: IntoIterator<Item = S>,
+    S: AsRef<std::ffi::OsStr>,
+{
+    let mut cmd = std::process::Command::new(assert_cmd::cargo::cargo_bin("ngit"));
+    cmd.args(args);
+    // using branch for PR https://github.com/rust-cli/rexpect/pull/103 to strip ansi escape codes
+    rexpect::session::spawn_with_options(
+        cmd,
+        Options {
+            timeout_ms: Some(2000),
+            strip_ansi_escape_codes: true,
+        },
+    )
+}
+
+/// backup and remove application config and data
+pub fn before() -> Result<()> {
+    backup_existing_config()
+}
+
+/// restore backuped application config and data
+pub fn after() -> Result<()> {
+    restore_config_backup()
+}
+
+/// run func between before and after scripts which backup, reset and restore
+/// application config
+///
+/// TODO: fix issue: if func panics, after() is not run.
+pub fn with_fresh_config<F>(func: F) -> Result<()>
+where
+    F: Fn() -> Result<()>,
+{
+    before()?;
+    func()?;
+    after()
+}
+
+fn backup_existing_config() -> Result<()> {
+    let config_path = get_dirs().config_dir().join("config.json");
+    let backup_config_path = get_dirs().config_dir().join("config-backup.json");
+    if config_path.exists() {
+        std::fs::rename(config_path, backup_config_path)?;
+    }
+    Ok(())
+}
+
+fn restore_config_backup() -> Result<()> {
+    let config_path = get_dirs().config_dir().join("config.json");
+    let backup_config_path = get_dirs().config_dir().join("config-backup.json");
+    if config_path.exists() {
+        std::fs::remove_file(&config_path)?;
+    }
+    if backup_config_path.exists() {
+        std::fs::rename(backup_config_path, config_path)?;
+    }
+    Ok(())
+}
+
+fn get_dirs() -> ProjectDirs {
+    ProjectDirs::from("", "CodeCollaboration", "ngit")
+        .expect("rust directories crate should return ProjectDirs")
+}
diff --git a/tests/login.rs b/tests/login.rs
new file mode 100644
index 0000000..a7e1889
--- /dev/null
+++ b/tests/login.rs
@@ -0,0 +1,145 @@
+use anyhow::Result;
+use serial_test::serial;
+use test_utils::*;
+
+static EXPECTED_NSEC_PROMPT: &str = "login with nsec (or hex private key)";
+
+fn standard_login() -> Result<CliTester> {
+    let mut p = CliTester::new(["login"]);
+
+    p.expect_input_eventually(EXPECTED_NSEC_PROMPT)?
+        .succeeds_with(TEST_KEY_1_NSEC)?;
+
+    p.expect_end_eventually()?;
+    Ok(p)
+}
+
+mod when_first_time_login {
+    use super::*;
+
+    #[test]
+    #[serial]
+    fn prompts_for_nsec() -> Result<()> {
+        with_fresh_config(|| {
+            standard_login()?;
+            Ok(())
+        })
+    }
+
+    #[test]
+    #[serial]
+    fn succeeds_with_text_logged_in_as_npub() -> Result<()> {
+        with_fresh_config(|| {
+            let mut p = CliTester::new(["login"]);
+
+            p.expect_input(EXPECTED_NSEC_PROMPT)?
+                .succeeds_with(TEST_KEY_1_NSEC)?;
+
+            p.expect_end_with(format!("logged in as {}\r\n", TEST_KEY_1_NSEC).as_str())
+        })
+    }
+
+    #[test]
+    #[serial]
+    fn next_time_returns_logged_in_as_npub() -> Result<()> {
+        with_fresh_config(|| {
+            standard_login()?.exit()?;
+
+            CliTester::new(["login"])
+                .expect(format!("logged in as {}\r\n", TEST_KEY_1_NSEC).as_str())?
+                .exit()
+        })
+    }
+}
+
+mod when_called_with_nsec_parameter {
+    use super::*;
+
+    #[test]
+    #[serial]
+    fn valid_nsec_param_succeeds_without_prompts() -> Result<()> {
+        with_fresh_config(|| {
+            CliTester::new(["--nsec", TEST_KEY_2_NSEC, "login"])
+                .expect_end_with(format!("logged in as {}\r\n", TEST_KEY_2_NSEC).as_str())?;
+
+            CliTester::new(["login"])
+                .expect(format!("logged in as {}\r\n", TEST_KEY_2_NSEC).as_str())?
+                .exit()
+        })
+    }
+
+    mod when_logging_in_as_different_nsec {
+        use super::*;
+
+        #[test]
+        #[serial]
+        fn valid_nsec_param_succeeds_without_prompts_and_logs_in() -> Result<()> {
+            with_fresh_config(|| {
+                standard_login()?.exit()?;
+
+                CliTester::new(["--nsec", TEST_KEY_2_NSEC, "login"])
+                    .expect(format!("logged in as {}\r\n", TEST_KEY_1_NSEC).as_str())?
+                    .expect_end_with(format!("logged in as {}\r\n", TEST_KEY_2_NSEC).as_str())?;
+
+                CliTester::new(["login"])
+                    .expect(format!("logged in as {}\r\n", TEST_KEY_2_NSEC).as_str())?
+                    .exit()
+            })
+        }
+    }
+}
+
+mod when_logged_in {
+    use super::*;
+
+    #[test]
+    #[serial]
+    fn returns_logged_in_as_npub() -> Result<()> {
+        with_fresh_config(|| {
+            standard_login()?.exit()?;
+
+            CliTester::new(["login"])
+                .expect(format!("logged in as {}\r\n", TEST_KEY_1_NSEC).as_str())?
+                .exit()
+        })
+    }
+
+    #[test]
+    #[serial]
+    fn prompts_to_log_in_with_different_nsec() -> Result<()> {
+        with_fresh_config(|| {
+            standard_login()?.exit()?;
+
+            let mut p = CliTester::new(["login"]);
+            p.expect(format!("logged in as {}\r\n", TEST_KEY_1_NSEC).as_str())?;
+
+            p.expect_input(EXPECTED_NSEC_PROMPT)?
+                .succeeds_with(TEST_KEY_2_NSEC)?;
+
+            p.expect_end_with(format!("logged in as {}\r\n", TEST_KEY_2_NSEC).as_str())
+        })
+    }
+    mod when_logging_in_as_different_nsec {
+        use super::*;
+
+        #[test]
+        #[serial]
+        fn confirmed_as_logged_in_as_additional_user() -> Result<()> {
+            with_fresh_config(|| {
+                standard_login()?.exit()?;
+
+                let mut p = CliTester::new(["login"]);
+                p.expect(format!("logged in as {}\r\n", TEST_KEY_1_NSEC).as_str())?;
+
+                p.expect_input(EXPECTED_NSEC_PROMPT)?
+                    .succeeds_with(TEST_KEY_2_NSEC)?;
+
+                p.expect_end_with(format!("logged in as {}\r\n", TEST_KEY_2_NSEC).as_str())?;
+
+                CliTester::new(["login"])
+                    .expect(format!("logged in as {}\r\n", TEST_KEY_2_NSEC).as_str())?
+                    .exit()
+            })
+        }
+    }
+}
-- 
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