From d2d0eeb72912809a00f09fafdae4e827a34d0e26 Mon Sep 17 00:00:00 2001
From: DanConwayDev <DanConwayDev@protonmail.com>
Date: Mon, 9 Sep 2024 07:36:47 +0100
Subject: feat(remote): push protocol selection / fallback

enable override from nostr url

clone url is filesystem use filesystem
otherwise try ssh, then https authenticated
unless clone url is http, then try ssh then http as we assume,
we are on a local trusted network.
---
 src/bin/git_remote_nostr/push.rs | 92 ++++++++++++++++++++++++++++++++--------
 1 file changed, 74 insertions(+), 18 deletions(-)

(limited to 'src/bin/git_remote_nostr/push.rs')

diff --git a/src/bin/git_remote_nostr/push.rs b/src/bin/git_remote_nostr/push.rs
index 2c9c7e1..364555a 100644
--- a/src/bin/git_remote_nostr/push.rs
+++ b/src/bin/git_remote_nostr/push.rs
@@ -4,7 +4,7 @@ use std::{
     io::Stdin,
 };
 
-use anyhow::{bail, Context, Result};
+use anyhow::{anyhow, bail, Context, Result};
 use auth_git2::GitAuthenticator;
 use client::{get_events_from_cache, get_state_from_cache, send_events, sign_event, STATE_KIND};
 use console::Term;
@@ -15,7 +15,10 @@ use git_events::{
 };
 use ngit::{
     client::{self, get_event_from_cache_by_id},
-    git::{self, nostr_url::NostrUrlDecoded},
+    git::{
+        self,
+        nostr_url::{CloneUrl, NostrUrlDecoded},
+    },
     git_events::{self, get_event_root},
     login::{self, get_curent_user},
     repo_ref, repo_state,
@@ -34,7 +37,8 @@ use crate::{
     list::list_from_remotes,
     utils::{
         find_proposal_and_patches_by_branch_name, get_all_proposals, get_remote_name_by_url,
-        get_short_git_server_name, read_line, switch_clone_url_between_ssh_and_https,
+        get_short_git_server_name, get_write_protocols_to_try, join_with_and,
+        push_error_is_not_authentication_failure, read_line,
     },
 };
 
@@ -315,27 +319,21 @@ pub async fn run_push(
     }
 
     // TODO make async - check gitlib2 callbacks work async
+
     for (git_server_url, remote_refspecs) in remote_refspecs {
         let remote_refspecs = remote_refspecs
             .iter()
             .filter(|refspec| git_server_refspecs.contains(refspec))
             .cloned()
             .collect::<Vec<String>>();
-        if !refspecs.is_empty()
-            && push_to_remote(git_repo, &git_server_url, &remote_refspecs, &term).is_err()
-        {
-            if let Ok(alternative_url) = switch_clone_url_between_ssh_and_https(&git_server_url) {
-                if push_to_remote(git_repo, &alternative_url, &remote_refspecs, &term).is_err() {
-                    // errors get printed as part of callback
-                    // TODO prevent 2 warning messages and instead use one
-                    // to say it didnt work over either https or ssh
-                } else {
-                    term.write_line(
-                        format!("but succeed over alterantive protocol {alternative_url}",)
-                            .as_str(),
-                    )?;
-                }
-            }
+        if !refspecs.is_empty() {
+            let _ = push_to_remote(
+                git_repo,
+                &git_server_url,
+                decoded_nostr_url,
+                &remote_refspecs,
+                &term,
+            );
         }
     }
     println!();
@@ -343,6 +341,64 @@ pub async fn run_push(
 }
 
 fn push_to_remote(
+    git_repo: &Repo,
+    git_server_url: &str,
+    decoded_nostr_url: &NostrUrlDecoded,
+    remote_refspecs: &[String],
+    term: &Term,
+) -> Result<()> {
+    let server_url = git_server_url.parse::<CloneUrl>()?;
+    let protocols_to_attempt = get_write_protocols_to_try(&server_url, decoded_nostr_url);
+
+    let mut failed_protocols = vec![];
+    let mut success = false;
+
+    for protocol in &protocols_to_attempt {
+        term.write_line(
+            format!(
+                "fetching ref list over {protocol} from {}...",
+                server_url.short_name(),
+            )
+            .as_str(),
+        )?;
+
+        let formatted_url = server_url.format_as(protocol, &decoded_nostr_url.user)?;
+
+        if let Err(error) = push_to_remote_url(git_repo, &formatted_url, remote_refspecs, term) {
+            term.write_line(
+                format!("push: {formatted_url} failed over {protocol}: {error}").as_str(),
+            )?;
+            failed_protocols.push(protocol);
+            if push_error_is_not_authentication_failure(&error) {
+                break;
+            }
+        } else {
+            success = true;
+            if !failed_protocols.is_empty() {
+                term.write_line(format!("fetch: succeeded over {protocol}").as_str())?;
+            }
+        }
+        term.clear_last_lines(1)?;
+    }
+    if success {
+        Ok(())
+    } else {
+        let error = anyhow!(
+            "{} failed over {}{}",
+            server_url.short_name(),
+            join_with_and(&failed_protocols),
+            if decoded_nostr_url.protocol.is_some() {
+                " and nostr url contains protocol override so no other protocols were attempted"
+            } else {
+                ""
+            },
+        );
+        term.write_line(format!("fetch: {error}").as_str())?;
+        Err(error)
+    }
+}
+
+fn push_to_remote_url(
     git_repo: &Repo,
     git_server_url: &str,
     remote_refspecs: &[String],
-- 
cgit v1.2.3