use std::collections::HashSet;

use anyhow::{Context, Result};
use futures::join;
use nostr::nips::nip01::Coordinate;
use nostr_sdk::{Kind, ToBech32};
use relay::Relay;
use serial_test::serial;
use test_utils::{git::GitTestRepo, *};

static NOSTR_REMOTE_NAME: &str = "nostr";
static STATE_KIND: nostr::Kind = Kind::Custom(30618);

fn get_nostr_remote_url() -> Result<String> {
    let repo_event = generate_repo_ref_event();
    let naddr = Coordinate {
        kind: Kind::GitRepoAnnouncement,
        public_key: repo_event.author(),
        identifier: repo_event.identifier().unwrap().to_string(),
        relays: vec![
            "ws://localhost:8055".to_string(),
            "ws://localhost:8056".to_string(),
        ],
    }
    .to_bech32()?;
    Ok(format!("nostr://{naddr}"))
}

fn prep_git_repo() -> Result<GitTestRepo> {
    let test_repo = GitTestRepo::without_repo_in_git_config();
    let mut config = test_repo
        .git_repo
        .config()
        .context("cannot open git config")?;
    config.set_str("nostr.nsec", TEST_KEY_1_NSEC)?;
    config.set_str("nostr.npub", TEST_KEY_1_NPUB)?;
    test_repo.add_remote(NOSTR_REMOTE_NAME, &get_nostr_remote_url()?)?;
    test_repo.populate()?;
    Ok(test_repo)
}

fn prep_git_repo_minus_1_commit() -> Result<GitTestRepo> {
    let test_repo = GitTestRepo::without_repo_in_git_config();
    let mut config = test_repo
        .git_repo
        .config()
        .context("cannot open git config")?;
    config.set_str("nostr.nsec", TEST_KEY_1_NSEC)?;
    config.set_str("nostr.npub", TEST_KEY_1_NPUB)?;
    test_repo.add_remote(NOSTR_REMOTE_NAME, &get_nostr_remote_url()?)?;
    test_repo.populate_minus_1()?;
    Ok(test_repo)
}

fn cli_tester(git_repo: &GitTestRepo) -> CliTester {
    CliTester::new_remote_helper_from_dir(&git_repo.dir, &get_nostr_remote_url().unwrap())
}

fn cli_tester_after_fetch(git_repo: &GitTestRepo) -> Result<CliTester> {
    let mut p = cli_tester(git_repo);
    p.expect("fetching updates...\r\n")?;
    p.expect_eventually("updates")?; // some updates
    p.expect_eventually("\r\n")?;
    Ok(p)
}

async fn generate_repo_with_state_event() -> Result<(nostr::Event, GitTestRepo)> {
    let git_repo = prep_git_repo()?;
    git_repo.create_branch("example-branch")?;
    let main_commit_id = git_repo.get_tip_of_local_branch("main")?.to_string();
    // TODO recreate_as_bare isn't creating other branches
    let source_git_repo = GitTestRepo::recreate_as_bare(&git_repo)?;
    let example_commit_id = source_git_repo
        .get_tip_of_local_branch("example-branch")?
        .to_string();
    let events = vec![
        generate_test_key_1_metadata_event("fred"),
        generate_test_key_1_relay_list_event(),
        generate_repo_ref_event_with_git_server(vec![
            source_git_repo.dir.to_str().unwrap().to_string(),
        ]),
    ];
    // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
    let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
        Relay::new(8051, None, None),
        Relay::new(8052, None, None),
        Relay::new(8053, None, None),
        Relay::new(8055, None, None),
        Relay::new(8056, None, None),
        Relay::new(8057, None, None),
    );
    r51.events = events.clone();
    r55.events = events;

    let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
        let mut p = cli_tester_after_fetch(&git_repo)?;
        p.send_line("push refs/heads/main:refs/heads/main")?;
        p.send_line("")?;
        p.expect("ok refs/heads/main\r\n")?;
        p.expect("\r\n")?;

        p.exit()?;
        for p in [51, 52, 53, 55, 56, 57] {
            relay::shutdown_relay(8000 + p)?;
        }
        Ok(())
    });
    // launch relays
    let _ = join!(
        r51.listen_until_close(),
        r52.listen_until_close(),
        r53.listen_until_close(),
        r55.listen_until_close(),
        r56.listen_until_close(),
        r57.listen_until_close(),
    );
    cli_tester_handle.join().unwrap()?;

    let state_event = r56
        .events
        .iter()
        .find(|e| e.kind().eq(&STATE_KIND))
        .context("state event not created")?;

    assert_eq!(
        state_event
            .tags
            .iter()
            .filter(|t| t.kind().to_string().as_str().ne("d"))
            .map(|t| t.as_vec().to_vec())
            .collect::<HashSet<Vec<String>>>(),
        HashSet::from([
            vec!["HEAD".to_string(), "ref: refs/heads/main".to_string()],
            vec!["refs/heads/main".to_string(), main_commit_id.clone(),],
            vec!["refs/heads/example-branch".to_string(), example_commit_id,],
        ]),
    );

    // wait for bigger timestamp
    std::thread::sleep(std::time::Duration::from_millis(1000));

    Ok((state_event.clone(), source_git_repo))
}

mod initially_runs_fetch {

    use super::*;
    async fn async_run_test() -> Result<()> {
        let source_git_repo = prep_git_repo()?;
        let git_repo = prep_git_repo()?;
        let events = vec![
            generate_test_key_1_metadata_event("fred"),
            generate_test_key_1_relay_list_event(),
            generate_repo_ref_event_with_git_server(vec![
                source_git_repo.dir.to_str().unwrap().to_string(),
            ]),
        ];
        // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
        let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
            Relay::new(8051, None, None),
            Relay::new(8052, None, None),
            Relay::new(8053, None, None),
            Relay::new(8055, None, None),
            Relay::new(8056, None, None),
            Relay::new(8057, None, None),
        );
        r51.events = events.clone();
        r55.events = events;

        // // check relay had the right number of events
        let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
            let mut p = cli_tester_after_fetch(&git_repo)?;
            p.exit()?;
            for p in [51, 52, 53, 55, 56, 57] {
                relay::shutdown_relay(8000 + p)?;
            }
            Ok(())
        });

        // launch relays
        let _ = join!(
            r51.listen_until_close(),
            r52.listen_until_close(),
            r53.listen_until_close(),
            r55.listen_until_close(),
            r56.listen_until_close(),
            r57.listen_until_close(),
        );
        cli_tester_handle.join().unwrap()?;
        Ok(())
    }

    #[tokio::test]
    #[serial]
    async fn runs_fetch_and_reports() -> Result<()> {
        async_run_test().await
    }
}

mod list {

    use super::*;

    mod without_state_announcement {

        use super::*;

        async fn async_run_test() -> Result<()> {
            let source_git_repo = prep_git_repo()?;
            std::fs::write(source_git_repo.dir.join("commit.md"), "some content")?;
            let main_commit_id = source_git_repo.stage_and_commit("commit.md")?;

            source_git_repo.create_branch("vnext")?;
            source_git_repo.checkout("vnext")?;
            std::fs::write(source_git_repo.dir.join("vnext.md"), "some content")?;
            let vnext_commit_id = source_git_repo.stage_and_commit("vnext.md")?;
            source_git_repo.checkout("main")?;

            let git_repo = prep_git_repo()?;
            let events = vec![
                generate_test_key_1_metadata_event("fred"),
                generate_test_key_1_relay_list_event(),
                generate_repo_ref_event_with_git_server(vec![
                    source_git_repo.dir.to_str().unwrap().to_string(),
                ]),
            ];
            // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
            let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
                Relay::new(8051, None, None),
                Relay::new(8052, None, None),
                Relay::new(8053, None, None),
                Relay::new(8055, None, None),
                Relay::new(8056, None, None),
                Relay::new(8057, None, None),
            );
            r51.events = events.clone();
            r55.events = events;

            let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
                let mut p = cli_tester_after_fetch(&git_repo)?;
                p.send_line("list")?;
                // println!("{}", p.expect_eventually("\r\n\r\n")?);
                assert_eq!(
                    p.expect_eventually("\r\n\r\n")?
                        .split("\r\n")
                        .map(|e| e.to_string())
                        .collect::<HashSet<String>>(),
                    HashSet::from([
                        "@refs/heads/main HEAD".to_string(),
                        format!("{} refs/heads/main", main_commit_id),
                        format!("{} refs/heads/vnext", vnext_commit_id),
                    ]),
                );
                p.exit()?;
                for p in [51, 52, 53, 55, 56, 57] {
                    relay::shutdown_relay(8000 + p)?;
                }
                Ok(())
            });
            // launch relays
            let _ = join!(
                r51.listen_until_close(),
                r52.listen_until_close(),
                r53.listen_until_close(),
                r55.listen_until_close(),
                r56.listen_until_close(),
                r57.listen_until_close(),
            );
            cli_tester_handle.join().unwrap()?;
            Ok(())
        }

        #[tokio::test]
        #[serial]
        async fn lists_head_and_2_branches_and_commit_ids_from_git_server() -> Result<()> {
            async_run_test().await
        }
    }
    mod with_state_announcement {

        use super::*;

        mod when_announcement_matches_git_server {

            use super::*;

            async fn async_run_test() -> Result<()> {
                let (state_event, source_git_repo) = generate_repo_with_state_event().await?;

                let main_commit_id = source_git_repo.get_tip_of_local_branch("main")?;
                let example_commit_id =
                    source_git_repo.get_tip_of_local_branch("example-branch")?;

                let git_repo = prep_git_repo()?;
                let events = vec![
                    generate_test_key_1_metadata_event("fred"),
                    generate_test_key_1_relay_list_event(),
                    generate_repo_ref_event_with_git_server(vec![
                        source_git_repo.dir.to_str().unwrap().to_string(),
                    ]),
                    state_event,
                ];
                // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
                let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
                    Relay::new(8051, None, None),
                    Relay::new(8052, None, None),
                    Relay::new(8053, None, None),
                    Relay::new(8055, None, None),
                    Relay::new(8056, None, None),
                    Relay::new(8057, None, None),
                );
                r51.events = events.clone();
                r55.events = events;

                let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
                    let mut p = cli_tester_after_fetch(&git_repo)?;
                    p.send_line("list")?;
                    // println!("{}", p.expect_eventually("\r\n\r\n")?);
                    assert_eq!(
                        p.expect_eventually("\r\n\r\n")?
                            .split("\r\n")
                            .map(|e| e.to_string())
                            .collect::<HashSet<String>>(),
                        HashSet::from([
                            "@refs/heads/main HEAD".to_string(),
                            format!("{} refs/heads/main", main_commit_id),
                            format!("{} refs/heads/example-branch", example_commit_id),
                        ]),
                    );
                    p.exit()?;
                    for p in [51, 52, 53, 55, 56, 57] {
                        relay::shutdown_relay(8000 + p)?;
                    }
                    Ok(())
                });
                // launch relays
                let _ = join!(
                    r51.listen_until_close(),
                    r52.listen_until_close(),
                    r53.listen_until_close(),
                    r55.listen_until_close(),
                    r56.listen_until_close(),
                    r57.listen_until_close(),
                );
                cli_tester_handle.join().unwrap()?;
                Ok(())
            }

            #[tokio::test]
            #[serial]
            async fn lists_head_and_2_branches_and_commit_ids_announcement() -> Result<()> {
                async_run_test().await
            }
        }
        mod when_announcement_doesnt_match_git_server {

            use super::*;

            async fn async_run_test() -> Result<()> {
                let (state_event, source_git_repo) = generate_repo_with_state_event().await?;
                let main_original_commit_id = source_git_repo.get_tip_of_local_branch("main")?;

                {
                    // add commit to main on git server
                    let tmp_repo = GitTestRepo::clone_repo(&source_git_repo)?;
                    std::fs::write(tmp_repo.dir.join("commitx.md"), "some content")?;
                    tmp_repo.stage_and_commit("commitx.md")?;
                    let mut remote = tmp_repo.git_repo.find_remote("origin")?;
                    remote.push(&["refs/heads/main:refs/heads/main"], None)?;
                }

                let main_updated_commit_id = source_git_repo.get_tip_of_local_branch("main")?;
                assert_ne!(main_original_commit_id, main_updated_commit_id);
                let example_commit_id =
                    source_git_repo.get_tip_of_local_branch("example-branch")?;

                let git_repo = prep_git_repo()?;
                let events = vec![
                    generate_test_key_1_metadata_event("fred"),
                    generate_test_key_1_relay_list_event(),
                    generate_repo_ref_event_with_git_server(vec![
                        source_git_repo.dir.to_str().unwrap().to_string(),
                    ]),
                    state_event,
                ];
                // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
                let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
                    Relay::new(8051, None, None),
                    Relay::new(8052, None, None),
                    Relay::new(8053, None, None),
                    Relay::new(8055, None, None),
                    Relay::new(8056, None, None),
                    Relay::new(8057, None, None),
                );
                r51.events = events.clone();
                r55.events = events;

                let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
                    let mut p = cli_tester_after_fetch(&git_repo)?;
                    p.send_line("list")?;
                    // println!("{}", p.expect_eventually("\r\n\r\n")?);
                    assert_eq!(
                        p.expect_eventually("\r\n\r\n")?
                            .split("\r\n")
                            .map(|e| e.to_string())
                            .collect::<HashSet<String>>(),
                        HashSet::from([
                            "@refs/heads/main HEAD".to_string(),
                            format!("{} refs/heads/main", main_original_commit_id),
                            format!("{} refs/heads/example-branch", example_commit_id),
                        ]),
                    );
                    p.exit()?;
                    for p in [51, 52, 53, 55, 56, 57] {
                        relay::shutdown_relay(8000 + p)?;
                    }
                    Ok(())
                });
                // launch relays
                let _ = join!(
                    r51.listen_until_close(),
                    r52.listen_until_close(),
                    r53.listen_until_close(),
                    r55.listen_until_close(),
                    r56.listen_until_close(),
                    r57.listen_until_close(),
                );
                cli_tester_handle.join().unwrap()?;
                Ok(())
            }

            #[tokio::test]
            #[serial]
            async fn anouncement_state_is_used() -> Result<()> {
                async_run_test().await
            }
        }
    }
}

mod fetch {

    use super::*;

    async fn async_run_test() -> Result<()> {
        let source_git_repo = prep_git_repo()?;
        std::fs::write(source_git_repo.dir.join("commit.md"), "some content")?;
        let main_commit_id = source_git_repo.stage_and_commit("commit.md")?;

        source_git_repo.create_branch("vnext")?;
        source_git_repo.checkout("vnext")?;
        std::fs::write(source_git_repo.dir.join("vnext.md"), "some content")?;
        let vnext_commit_id = source_git_repo.stage_and_commit("vnext.md")?;

        let git_repo = prep_git_repo()?;
        let events = vec![
            generate_test_key_1_metadata_event("fred"),
            generate_test_key_1_relay_list_event(),
            generate_repo_ref_event_with_git_server(vec![
                source_git_repo.dir.to_str().unwrap().to_string(),
            ]),
        ];
        // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
        let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
            Relay::new(8051, None, None),
            Relay::new(8052, None, None),
            Relay::new(8053, None, None),
            Relay::new(8055, None, None),
            Relay::new(8056, None, None),
            Relay::new(8057, None, None),
        );
        r51.events = events.clone();
        r55.events = events;

        let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
            assert!(git_repo.git_repo.find_commit(main_commit_id).is_err());
            assert!(git_repo.git_repo.find_commit(vnext_commit_id).is_err());

            let mut p = cli_tester_after_fetch(&git_repo)?;
            p.send_line(format!("fetch {main_commit_id} main").as_str())?;
            p.send_line(format!("fetch {vnext_commit_id} vnext").as_str())?;
            p.send_line("")?;
            p.expect("\r\n")?;

            assert!(git_repo.git_repo.find_commit(main_commit_id).is_ok());
            assert!(git_repo.git_repo.find_commit(vnext_commit_id).is_ok());

            p.exit()?;
            for p in [51, 52, 53, 55, 56, 57] {
                relay::shutdown_relay(8000 + p)?;
            }
            Ok(())
        });
        // launch relays
        let _ = join!(
            r51.listen_until_close(),
            r52.listen_until_close(),
            r53.listen_until_close(),
            r55.listen_until_close(),
            r56.listen_until_close(),
            r57.listen_until_close(),
        );
        cli_tester_handle.join().unwrap()?;
        Ok(())
    }

    #[tokio::test]
    #[serial]
    async fn fetch_downloads_speficied_commits_from_git_server() -> Result<()> {
        async_run_test().await
    }

    mod when_first_git_server_fails_ {
        use super::*;
        async fn async_run_test() -> Result<()> {
            let (state_event, source_git_repo) = generate_repo_with_state_event().await?;

            let main_commit_id = source_git_repo.get_tip_of_local_branch("main")?;

            let git_repo = prep_git_repo_minus_1_commit()?;

            let events = vec![
                generate_test_key_1_metadata_event("fred"),
                generate_test_key_1_relay_list_event(),
                generate_repo_ref_event_with_git_server(vec![
                    "./path-doesnt-exist".to_string(),
                    source_git_repo.dir.to_str().unwrap().to_string(),
                ]),
                state_event,
            ];
            // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
            let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
                Relay::new(8051, None, None),
                Relay::new(8052, None, None),
                Relay::new(8053, None, None),
                Relay::new(8055, None, None),
                Relay::new(8056, None, None),
                Relay::new(8057, None, None),
            );
            r51.events = events.clone();
            r55.events = events;

            let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
                assert!(git_repo.git_repo.find_commit(main_commit_id).is_err());

                let mut p = cli_tester_after_fetch(&git_repo)?;
                p.send_line(format!("fetch {main_commit_id} main").as_str())?;
                p.send_line("")?;
                p.expect("\r\n")?;

                assert!(git_repo.git_repo.find_commit(main_commit_id).is_ok());

                p.exit()?;
                for p in [51, 52, 53, 55, 56, 57] {
                    relay::shutdown_relay(8000 + p)?;
                }
                Ok(())
            });
            // launch relays
            let _ = join!(
                r51.listen_until_close(),
                r52.listen_until_close(),
                r53.listen_until_close(),
                r55.listen_until_close(),
                r56.listen_until_close(),
                r57.listen_until_close(),
            );
            cli_tester_handle.join().unwrap()?;
            Ok(())
        }

        #[tokio::test]
        #[serial]
        async fn fetch_downloads_speficied_commits_from_second_git_server() -> Result<()> {
            async_run_test().await
        }
    }
}

mod push {

    use super::*;

    mod two_branches_in_batch_one_added_one_updated {

        use super::*;

        mod git_server_updated {

            use super::*;

            async fn async_run_test() -> Result<()> {
                let git_repo = prep_git_repo()?;
                let source_git_repo = GitTestRepo::recreate_as_bare(&git_repo)?;

                std::fs::write(git_repo.dir.join("commit.md"), "some content")?;
                let main_commit_id = git_repo.stage_and_commit("commit.md")?;

                git_repo.create_branch("vnext")?;
                git_repo.checkout("vnext")?;
                std::fs::write(git_repo.dir.join("vnext.md"), "some content")?;
                let vnext_commit_id = git_repo.stage_and_commit("vnext.md")?;

                let events = vec![
                    generate_test_key_1_metadata_event("fred"),
                    generate_test_key_1_relay_list_event(),
                    generate_repo_ref_event_with_git_server(vec![
                        source_git_repo.dir.to_str().unwrap().to_string(),
                    ]),
                ];
                // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
                let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
                    Relay::new(8051, None, None),
                    Relay::new(8052, None, None),
                    Relay::new(8053, None, None),
                    Relay::new(8055, None, None),
                    Relay::new(8056, None, None),
                    Relay::new(8057, None, None),
                );
                r51.events = events.clone();
                r55.events = events;

                let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
                    assert_ne!(
                        source_git_repo.get_tip_of_local_branch("main")?,
                        main_commit_id
                    );

                    let mut p = cli_tester_after_fetch(&git_repo)?;
                    p.send_line("push refs/heads/main:refs/heads/main")?;
                    p.send_line("push refs/heads/vnext:refs/heads/vnext")?;
                    p.send_line("")?;
                    p.expect("ok refs/heads/main\r\n")?;
                    p.expect("ok refs/heads/vnext\r\n")?;
                    p.expect("\r\n")?;

                    assert_eq!(
                        source_git_repo.get_tip_of_local_branch("main")?,
                        main_commit_id
                    );

                    assert_eq!(
                        source_git_repo.get_tip_of_local_branch("vnext")?,
                        vnext_commit_id
                    );

                    p.exit()?;
                    for p in [51, 52, 53, 55, 56, 57] {
                        relay::shutdown_relay(8000 + p)?;
                    }
                    Ok(())
                });
                // launch relays
                let _ = join!(
                    r51.listen_until_close(),
                    r52.listen_until_close(),
                    r53.listen_until_close(),
                    r55.listen_until_close(),
                    r56.listen_until_close(),
                    r57.listen_until_close(),
                );
                cli_tester_handle.join().unwrap()?;
                Ok(())
            }

            #[tokio::test]
            #[serial]
            async fn push_updates_ref_on_git_server() -> Result<()> {
                async_run_test().await
            }
        }
        mod remote_refs_updated {

            use super::*;

            async fn async_run_test() -> Result<()> {
                let git_repo = prep_git_repo()?;
                let source_git_repo = GitTestRepo::recreate_as_bare(&git_repo)?;

                std::fs::write(git_repo.dir.join("commit.md"), "some content")?;
                let main_commit_id = git_repo.stage_and_commit("commit.md")?;

                git_repo.create_branch("vnext")?;
                git_repo.checkout("vnext")?;
                std::fs::write(git_repo.dir.join("vnext.md"), "some content")?;
                let vnext_commit_id = git_repo.stage_and_commit("vnext.md")?;

                let events = vec![
                    generate_test_key_1_metadata_event("fred"),
                    generate_test_key_1_relay_list_event(),
                    generate_repo_ref_event_with_git_server(vec![
                        source_git_repo.dir.to_str().unwrap().to_string(),
                    ]),
                ];
                // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
                let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
                    Relay::new(8051, None, None),
                    Relay::new(8052, None, None),
                    Relay::new(8053, None, None),
                    Relay::new(8055, None, None),
                    Relay::new(8056, None, None),
                    Relay::new(8057, None, None),
                );
                r51.events = events.clone();
                r55.events = events;

                let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
                    assert_ne!(
                        source_git_repo.get_tip_of_local_branch("main")?,
                        main_commit_id
                    );

                    let mut p = cli_tester_after_fetch(&git_repo)?;
                    p.send_line("push refs/heads/main:refs/heads/main")?;
                    p.send_line("push refs/heads/vnext:refs/heads/vnext")?;
                    p.send_line("")?;
                    p.expect("ok refs/heads/main\r\n")?;
                    p.expect("ok refs/heads/vnext\r\n")?;
                    p.expect("\r\n")?;

                    assert_eq!(
                        git_repo
                            .git_repo
                            .find_reference("refs/remotes/nostr/main")?
                            .peel_to_commit()?
                            .id(),
                        main_commit_id,
                    );

                    assert_eq!(
                        git_repo
                            .git_repo
                            .find_reference("refs/remotes/nostr/vnext")?
                            .peel_to_commit()?
                            .id(),
                        vnext_commit_id
                    );

                    p.exit()?;
                    for p in [51, 52, 53, 55, 56, 57] {
                        relay::shutdown_relay(8000 + p)?;
                    }
                    Ok(())
                });
                // launch relays
                let _ = join!(
                    r51.listen_until_close(),
                    r52.listen_until_close(),
                    r53.listen_until_close(),
                    r55.listen_until_close(),
                    r56.listen_until_close(),
                    r57.listen_until_close(),
                );
                cli_tester_handle.join().unwrap()?;
                Ok(())
            }

            #[tokio::test]
            #[serial]
            async fn push_updates_refs() -> Result<()> {
                async_run_test().await
            }
        }
        mod no_existing_state_event {
            use super::*;

            mod state_on_git_server_published_in_nostr_state_event {

                use super::*;

                async fn async_run_test() -> Result<()> {
                    let git_repo = prep_git_repo()?;
                    let source_git_repo = GitTestRepo::recreate_as_bare(&git_repo)?;

                    std::fs::write(git_repo.dir.join("commit.md"), "some content")?;
                    let main_commit_id = git_repo.stage_and_commit("commit.md")?;

                    git_repo.create_branch("vnext")?;
                    git_repo.checkout("vnext")?;
                    std::fs::write(git_repo.dir.join("vnext.md"), "some content")?;
                    let vnext_commit_id = git_repo.stage_and_commit("vnext.md")?;

                    let events = vec![
                        generate_test_key_1_metadata_event("fred"),
                        generate_test_key_1_relay_list_event(),
                        generate_repo_ref_event_with_git_server(vec![
                            source_git_repo.dir.to_str().unwrap().to_string(),
                        ]),
                    ];
                    // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
                    let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
                        Relay::new(8051, None, None),
                        Relay::new(8052, None, None),
                        Relay::new(8053, None, None),
                        Relay::new(8055, None, None),
                        Relay::new(8056, None, None),
                        Relay::new(8057, None, None),
                    );
                    r51.events = events.clone();
                    r55.events = events;

                    let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
                        let mut p = cli_tester_after_fetch(&git_repo)?;
                        p.send_line("push refs/heads/main:refs/heads/main")?;
                        p.send_line("push refs/heads/vnext:refs/heads/vnext")?;
                        p.send_line("")?;
                        p.expect("ok refs/heads/main\r\n")?;
                        p.expect("ok refs/heads/vnext\r\n")?;
                        p.expect("\r\n")?;

                        p.exit()?;
                        for p in [51, 52, 53, 55, 56, 57] {
                            relay::shutdown_relay(8000 + p)?;
                        }
                        Ok(())
                    });
                    // launch relays
                    let _ = join!(
                        r51.listen_until_close(),
                        r52.listen_until_close(),
                        r53.listen_until_close(),
                        r55.listen_until_close(),
                        r56.listen_until_close(),
                        r57.listen_until_close(),
                    );
                    cli_tester_handle.join().unwrap()?;

                    let state_event = r56
                        .events
                        .iter()
                        .find(|e| e.kind().eq(&STATE_KIND))
                        .context("state event not created")?;

                    assert_eq!(
                        state_event.identifier(),
                        generate_repo_ref_event().identifier(),
                    );
                    // println!("{:#?}", state_event);
                    assert_eq!(
                        state_event
                            .tags
                            .iter()
                            .filter(|t| t.kind().to_string().as_str().ne("d"))
                            .map(|t| t.as_vec().to_vec())
                            .collect::<HashSet<Vec<String>>>(),
                        HashSet::from([
                            vec!["HEAD".to_string(), "ref: refs/heads/main".to_string()],
                            vec!["refs/heads/main".to_string(), main_commit_id.to_string()],
                            vec!["refs/heads/vnext".to_string(), vnext_commit_id.to_string()],
                        ]),
                    );
                    Ok(())
                }

                #[tokio::test]
                #[serial]
                async fn state_event_reflects_git_server_state() -> Result<()> {
                    async_run_test().await
                }
            }
        }
        mod existing_state_event {
            use super::*;

            mod state_on_git_server_published_in_nostr_state_event {

                use super::*;

                async fn async_run_test() -> Result<()> {
                    let (state_event, source_git_repo) = generate_repo_with_state_event().await?;

                    let git_repo = prep_git_repo()?;
                    let example_branch_commit_id =
                        git_repo.get_tip_of_local_branch("main")?.to_string(); // same as example

                    std::fs::write(git_repo.dir.join("new.md"), "some content")?;
                    let main_commit_id = git_repo.stage_and_commit("new.md")?;
                    git_repo.create_branch("vnext")?;
                    git_repo.checkout("vnext")?;
                    std::fs::write(git_repo.dir.join("more.md"), "some content")?;
                    let vnext_commit_id = git_repo.stage_and_commit("more.md")?;

                    let events = vec![
                        generate_test_key_1_metadata_event("fred"),
                        generate_test_key_1_relay_list_event(),
                        generate_repo_ref_event_with_git_server(vec![
                            source_git_repo.dir.to_str().unwrap().to_string(),
                        ]),
                        state_event.clone(),
                    ];

                    // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
                    let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
                        Relay::new(8051, None, None),
                        Relay::new(8052, None, None),
                        Relay::new(8053, None, None),
                        Relay::new(8055, None, None),
                        Relay::new(8056, None, None),
                        Relay::new(8057, None, None),
                    );
                    r51.events = events.clone();
                    r55.events = events;

                    let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
                        let mut p = cli_tester_after_fetch(&git_repo)?;
                        p.send_line("push refs/heads/main:refs/heads/main")?;
                        p.send_line("push refs/heads/vnext:refs/heads/vnext")?;
                        p.send_line("")?;
                        p.expect("ok refs/heads/main\r\n")?;
                        p.expect("ok refs/heads/vnext\r\n")?;
                        p.expect("\r\n")?;
                        p.exit()?;
                        // local refs updated
                        assert_eq!(
                            git_repo
                                .git_repo
                                .find_reference("refs/remotes/nostr/main")?
                                .peel_to_commit()?
                                .id(),
                            main_commit_id,
                        );

                        assert_eq!(
                            git_repo
                                .git_repo
                                .find_reference("refs/remotes/nostr/vnext")?
                                .peel_to_commit()?
                                .id(),
                            vnext_commit_id
                        );
                        for p in [51, 52, 53, 55, 56, 57] {
                            relay::shutdown_relay(8000 + p)?;
                        }
                        Ok(())
                    });
                    // launch relays
                    let _ = join!(
                        r51.listen_until_close(),
                        r52.listen_until_close(),
                        r53.listen_until_close(),
                        r55.listen_until_close(),
                        r56.listen_until_close(),
                        r57.listen_until_close(),
                    );

                    cli_tester_handle.join().unwrap()?;

                    // git_server updated
                    assert_eq!(
                        source_git_repo.get_tip_of_local_branch("main")?,
                        main_commit_id
                    );

                    assert_eq!(
                        source_git_repo.get_tip_of_local_branch("vnext")?,
                        vnext_commit_id
                    );

                    // state annoucement updated
                    let state_event = r56
                        .events
                        .iter()
                        .find(|e| e.kind().eq(&STATE_KIND))
                        .context("state event not created")?;

                    // println!("{:#?}", state_event);
                    assert_eq!(
                        state_event
                            .tags
                            .iter()
                            .filter(|t| t.kind().to_string().as_str().ne("d"))
                            .map(|t| t.as_vec().to_vec())
                            .collect::<HashSet<Vec<String>>>(),
                        HashSet::from([
                            vec!["HEAD".to_string(), "ref: refs/heads/main".to_string()],
                            vec!["refs/heads/main".to_string(), main_commit_id.to_string()],
                            vec![
                                "refs/heads/example-branch".to_string(),
                                example_branch_commit_id.to_string()
                            ],
                            vec!["refs/heads/vnext".to_string(), vnext_commit_id.to_string()],
                        ]),
                    );
                    Ok(())
                }

                #[tokio::test]
                #[serial]
                async fn state_event_reflects_updated_with_pushed_changes() -> Result<()> {
                    async_run_test().await
                }
            }
        }
    }
    mod delete_one_branch {

        use super::*;

        mod git_server_updated {

            use super::*;

            async fn async_run_test() -> Result<()> {
                let git_repo = prep_git_repo()?;

                git_repo.create_branch("vnext")?;
                git_repo.checkout("vnext")?;
                std::fs::write(git_repo.dir.join("vnext.md"), "some content")?;
                let vnext_commit_id = git_repo.stage_and_commit("vnext.md")?;

                let source_git_repo = GitTestRepo::recreate_as_bare(&git_repo)?;

                let events = vec![
                    generate_test_key_1_metadata_event("fred"),
                    generate_test_key_1_relay_list_event(),
                    generate_repo_ref_event_with_git_server(vec![
                        source_git_repo.dir.to_str().unwrap().to_string(),
                    ]),
                ];
                // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
                let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
                    Relay::new(8051, None, None),
                    Relay::new(8052, None, None),
                    Relay::new(8053, None, None),
                    Relay::new(8055, None, None),
                    Relay::new(8056, None, None),
                    Relay::new(8057, None, None),
                );
                r51.events = events.clone();
                r55.events = events;

                let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
                    assert_eq!(
                        source_git_repo
                            .git_repo
                            .find_reference("refs/heads/vnext")?
                            .peel_to_commit()?
                            .id(),
                        vnext_commit_id
                    );

                    let mut p = cli_tester_after_fetch(&git_repo)?;
                    p.send_line("push :refs/heads/vnext")?;
                    p.send_line("")?;
                    p.expect("ok refs/heads/vnext\r\n")?;
                    p.expect("\r\n")?;

                    assert!(
                        source_git_repo
                            .git_repo
                            .find_reference("refs/heads/vnext")
                            .is_err()
                    );
                    // p.exit()?;
                    for p in [51, 52, 53, 55, 56, 57] {
                        relay::shutdown_relay(8000 + p)?;
                    }
                    Ok(())
                });
                // launch relays
                let _ = join!(
                    r51.listen_until_close(),
                    r52.listen_until_close(),
                    r53.listen_until_close(),
                    r55.listen_until_close(),
                    r56.listen_until_close(),
                    r57.listen_until_close(),
                );
                cli_tester_handle.join().unwrap()?;
                Ok(())
            }

            #[tokio::test]
            #[serial]
            async fn push_deletes_branch_on_git_server() -> Result<()> {
                async_run_test().await
            }
        }
        mod remote_refs_updated {

            use super::*;

            async fn async_run_test() -> Result<()> {
                let git_repo = prep_git_repo()?;

                git_repo.create_branch("vnext")?;
                git_repo.checkout("vnext")?;
                std::fs::write(git_repo.dir.join("vnext.md"), "some content")?;
                let vnext_commit_id = git_repo.stage_and_commit("vnext.md")?;

                let source_git_repo = GitTestRepo::recreate_as_bare(&git_repo)?;

                git_repo.git_repo.reference(
                    "refs/remotes/nostr/vnext",
                    vnext_commit_id,
                    true,
                    "",
                )?;

                let events = vec![
                    generate_test_key_1_metadata_event("fred"),
                    generate_test_key_1_relay_list_event(),
                    generate_repo_ref_event_with_git_server(vec![
                        source_git_repo.dir.to_str().unwrap().to_string(),
                    ]),
                ];
                // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
                let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
                    Relay::new(8051, None, None),
                    Relay::new(8052, None, None),
                    Relay::new(8053, None, None),
                    Relay::new(8055, None, None),
                    Relay::new(8056, None, None),
                    Relay::new(8057, None, None),
                );
                r51.events = events.clone();
                r55.events = events;

                let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
                    assert_eq!(
                        git_repo
                            .git_repo
                            .find_reference("refs/remotes/nostr/vnext")?
                            .peel_to_commit()?
                            .id(),
                        vnext_commit_id
                    );

                    let mut p = cli_tester_after_fetch(&git_repo)?;
                    p.send_line("push :refs/heads/vnext")?;
                    p.send_line("")?;
                    // let res = p.expect_eventually("\r\n\r\n")?;
                    // println!("{res}");
                    p.expect("ok refs/heads/vnext\r\n")?;
                    p.expect("\r\n")?;

                    assert!(
                        git_repo
                            .git_repo
                            .find_reference("refs/remotes/nostr/vnext")
                            .is_err()
                    );

                    p.exit()?;
                    for p in [51, 52, 53, 55, 56, 57] {
                        relay::shutdown_relay(8000 + p)?;
                    }
                    Ok(())
                });
                // launch relays
                let _ = join!(
                    r51.listen_until_close(),
                    r52.listen_until_close(),
                    r53.listen_until_close(),
                    r55.listen_until_close(),
                    r56.listen_until_close(),
                    r57.listen_until_close(),
                );
                cli_tester_handle.join().unwrap()?;
                Ok(())
            }

            #[tokio::test]
            #[serial]
            async fn push_remotes_refs() -> Result<()> {
                async_run_test().await
            }
        }
        mod existing_state_event {
            use super::*;

            mod state_on_git_server_published_in_nostr_state_event {

                use super::*;

                async fn async_run_test() -> Result<()> {
                    let (state_event, source_git_repo) = generate_repo_with_state_event().await?;

                    let git_repo = prep_git_repo()?;
                    let main_commit_id = git_repo.get_tip_of_local_branch("main")?.to_string(); // same as example

                    let events = vec![
                        generate_test_key_1_metadata_event("fred"),
                        generate_test_key_1_relay_list_event(),
                        generate_repo_ref_event_with_git_server(vec![
                            source_git_repo.dir.to_str().unwrap().to_string(),
                        ]),
                        state_event.clone(),
                    ];

                    // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
                    let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
                        Relay::new(8051, None, None),
                        Relay::new(8052, None, None),
                        Relay::new(8053, None, None),
                        Relay::new(8055, None, None),
                        Relay::new(8056, None, None),
                        Relay::new(8057, None, None),
                    );
                    r51.events = events.clone();
                    r55.events = events;

                    let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
                        let mut p = cli_tester_after_fetch(&git_repo)?;
                        p.send_line("push :refs/heads/example-branch")?;
                        p.send_line("")?;
                        p.expect("ok refs/heads/example-branch\r\n")?;
                        p.expect("\r\n")?;
                        p.exit()?;
                        for p in [51, 52, 53, 55, 56, 57] {
                            relay::shutdown_relay(8000 + p)?;
                        }
                        Ok(())
                    });
                    // launch relays
                    let _ = join!(
                        r51.listen_until_close(),
                        r52.listen_until_close(),
                        r53.listen_until_close(),
                        r55.listen_until_close(),
                        r56.listen_until_close(),
                        r57.listen_until_close(),
                    );

                    cli_tester_handle.join().unwrap()?;

                    let state_event = r56
                        .events
                        .iter()
                        .find(|e| e.kind().eq(&STATE_KIND))
                        .context("state event not created")?;

                    // println!("{:#?}", state_event);
                    assert_eq!(
                        state_event
                            .tags
                            .iter()
                            .filter(|t| t.kind().to_string().as_str().ne("d"))
                            .map(|t| t.as_vec().to_vec())
                            .collect::<HashSet<Vec<String>>>(),
                        HashSet::from([
                            vec!["HEAD".to_string(), "ref: refs/heads/main".to_string()],
                            vec!["refs/heads/main".to_string(), main_commit_id.to_string()],
                        ]),
                    );
                    Ok(())
                }

                #[tokio::test]
                #[serial]
                async fn state_event_reflects_deleted_branch() -> Result<()> {
                    async_run_test().await
                }
            }
        }
    }

    mod pushes_to_all_git_servers_listed {
        use super::*;
        async fn async_run_test() -> Result<()> {
            let (state_event, source_git_repo) = generate_repo_with_state_event().await?;
            let second_source_git_repo = GitTestRepo::duplicate(&source_git_repo)?;

            // uppdate announcement with extra git server

            let git_repo = prep_git_repo()?;

            std::fs::write(git_repo.dir.join("new.md"), "some content")?;
            let main_commit_id = git_repo.stage_and_commit("new.md")?;

            let events = vec![
                generate_test_key_1_metadata_event("fred"),
                generate_test_key_1_relay_list_event(),
                generate_repo_ref_event_with_git_server(vec![
                    source_git_repo.dir.to_str().unwrap().to_string(),
                    second_source_git_repo.dir.to_str().unwrap().to_string(),
                ]),
                state_event.clone(),
            ];

            // fallback (51,52) user write (53, 55) repo (55, 56) blaster (57)
            let (mut r51, mut r52, mut r53, mut r55, mut r56, mut r57) = (
                Relay::new(8051, None, None),
                Relay::new(8052, None, None),
                Relay::new(8053, None, None),
                Relay::new(8055, None, None),
                Relay::new(8056, None, None),
                Relay::new(8057, None, None),
            );
            r51.events = events.clone();
            r55.events = events;

            let cli_tester_handle = std::thread::spawn(move || -> Result<()> {
                let mut p = cli_tester_after_fetch(&git_repo)?;
                p.send_line("push refs/heads/main:refs/heads/main")?;
                p.send_line("")?;
                p.expect("ok refs/heads/main\r\n")?;
                p.expect("\r\n")?;
                p.exit()?;
                for p in [51, 52, 53, 55, 56, 57] {
                    relay::shutdown_relay(8000 + p)?;
                }
                Ok(())
            });
            // launch relays
            let _ = join!(
                r51.listen_until_close(),
                r52.listen_until_close(),
                r53.listen_until_close(),
                r55.listen_until_close(),
                r56.listen_until_close(),
                r57.listen_until_close(),
            );

            cli_tester_handle.join().unwrap()?;

            // git_server updated
            assert_eq!(
                source_git_repo.get_tip_of_local_branch("main")?,
                main_commit_id
            );
            assert_eq!(
                second_source_git_repo.get_tip_of_local_branch("main")?,
                main_commit_id
            );

            Ok(())
        }

        #[tokio::test]
        #[serial]
        async fn second_git_server_uptodate() -> Result<()> {
            async_run_test().await
        }
    }
}