//! Commit snapshots and last-good recovery with world git and a faux model.
use sausage::{
    exec::{Command, Exec, Options, Stream},
    world::World,
};
use std::{path::Path, sync::Arc};
const BUNDLE: &str = include_str!("../../js/extensions-test-bundle.js");
struct Author(Arc<dyn Exec>);
#[async_trait::async_trait]
impl Exec for Author {
    async fn exec(
        &self,
        command: Command,
        mut options: Options,
        output: &mut (dyn for<'a> FnMut(Stream, &'a [u8]) + Send),
    ) -> anyhow::Result<i32> {
        for (key, value) in [
            ("GIT_AUTHOR_NAME", "Test"),
            ("GIT_AUTHOR_EMAIL", "test@example.com"),
            ("GIT_COMMITTER_NAME", "Test"),
            ("GIT_COMMITTER_EMAIL", "test@example.com"),
        ] {
            options.env.push((key.into(), value.into()));
        }
        self.0.exec(command, options, output).await
    }
}
#[tokio::test(flavor = "current_thread")]
async fn commits_and_restart() -> anyhow::Result<()> {
    let userland = Path::new(env!("CARGO_MANIFEST_DIR")).join("../userland");
    let target = Path::new(env!("CARGO_TARGET_TMPDIR")).parent().unwrap();
    if !userland.join("cwd-init/init.o").is_file() {
        crate::common::cwd_init();
    }
    assert!(
        std::process::Command::new("cargo")
            .args([
                "build",
                "--release",
                "-p",
                "git",
                "-p",
                "sausage-exec-tools",
                "--manifest-path"
            ])
            .arg(userland.join("Cargo.toml"))
            .args(["--target", "wasm32-wasip2", "--target-dir"])
            .arg(target)
            .args(["-j", "2", "--locked"])
            .current_dir(&userland)
            .status()?
            .success()
    );
    let dir = tempfile::tempdir()?;
    let world = World::open(dir.path())?;
    let disk = dir.path().join("world");
    std::fs::create_dir_all(disk.join("bin"))?;
    std::fs::copy(
        target.join("wasm32-wasip2/release/git.wasm"),
        disk.join("bin/git.wasm"),
    )?;
    for name in ["extensions-revert", "env"] {
        std::fs::copy(
            target.join(format!("wasm32-wasip2/release/{name}.wasm")),
            disk.join(format!("bin/{name}.wasm")),
        )?;
    }
    let repo = disk.join("src/sausage");
    std::fs::create_dir_all(&repo)?;
    assert!(
        std::process::Command::new("git")
            .args(["init", "-b", "main"])
            .arg(&repo)
            .status()?
            .success()
    );
    assert!(
        std::process::Command::new("git")
            .args([
                "-c",
                "user.name=Test",
                "-c",
                "user.email=test@example.com",
                "commit",
                "--no-gpg-sign",
                "--allow-empty",
                "-m",
                "empty"
            ])
            .current_dir(&repo)
            .status()?
            .success()
    );
    let exec: Arc<dyn Exec> = Arc::new(Author(sausage::process::exec(World {
        root: world.root.clone(),
        host_dir: world.host_dir.clone(),
        processes: world.processes.clone(),
    })?));
    sausage::harness::run_module(world, exec, BUNDLE).await?;
    let good = std::fs::read_to_string(repo.join("good.txt"))?;
    let world = World::open(dir.path())?;
    let exec: Arc<dyn Exec> = Arc::new(Author(sausage::process::exec(World {
        root: world.root.clone(),
        host_dir: world.host_dir.clone(),
        processes: world.processes.clone(),
    })?));
    sausage::harness::run_module(
        world,
        exec,
        &format!("globalThis.extensionRestart=true;globalThis.extensionGood={good:?};\n{BUNDLE}"),
    )
    .await?;
    Ok(())
}