//! Integration tests: am lab (issue #62) and am plugins (issue #75).

mod common;

use agent_manager::cli::{Cli, LabArgs, PluginsArgs};
use agent_manager::commands::{lab_cmd, plugins_cmd};
use clap::Parser;
use std::path::PathBuf;

/// A config with two shell-based fake agents for the lab benchmark.
fn lab_config() -> String {
    concat!(
        "agents:\n",
        "  - name: bench-ok\n",
        "    installable: false\n",
        "    run: sh\n",
        "    args: [\"-c\", \"echo out: $0\"]\n",
        "  - name: bench-fail\n",
        "    installable: false\n",
        "    run: sh\n",
        "    args: [\"-c\", \"echo boom >&2; exit 3\"]\n",
    )
    .to_string()
}

#[test]
fn lab_runs_a_task_on_every_agent_and_reports() {
    let dir = std::env::temp_dir().join(format!("am-lab-e2e-{}", std::process::id()));
    std::fs::create_dir_all(&dir).unwrap();
    let cfg = common::write_config(&dir, &lab_config());
    let task = dir.join("hello.yaml");
    std::fs::write(
        &task,
        "name: hello\ndescription: e2e\nargs: [\"hello\"]\ntimeout: 30\n",
    )
    .unwrap();

    let cli = Cli::parse_from([
        "am",
        "--config",
        cfg.to_str().unwrap(),
        "lab",
        "--agents",
        "bench-ok",
        "--task",
        "hello.yaml",
    ]);
    let mut app = agent_manager::app::App::from_cli(cli).expect("app should build");
    common::isolate(&mut app, &dir);

    let code = lab_cmd::run(
        &app,
        &LabArgs {
            agents: Some("bench-ok, bench-fail".to_string()),
            task: Some(task.clone()),
            parallel: false,
            timeout: None,
            list: false,
        },
    )
    .unwrap();
    // One agent fails → the exit code is 1 (CI-friendly).
    assert_eq!(code, 1);

    // The benchmark is replayable with the same file.
    let code2 = lab_cmd::run(
        &app,
        &LabArgs {
            agents: Some("bench-ok".to_string()),
            task: Some(task),
            parallel: false,
            timeout: None,
            list: false,
        },
    )
    .unwrap();
    assert_eq!(code2, 0);

    // Each run was journaled as a lab event.
    let events = agent_manager::events::read_events(&app.events_dir(), 0);
    let lab_events = events.iter().filter(|e| e.kind == agent_manager::events::EventKind::Lab);
    assert!(lab_events.count() >= 3, "expected >= 3 lab events");

    let _ = std::fs::remove_dir_all(&dir);
}

#[test]
fn lab_list_shows_the_tasks_of_the_lab_dir() {
    let dir = std::env::temp_dir().join(format!("am-lab-list-{}", std::process::id()));
    std::fs::create_dir_all(&dir).unwrap();
    let cfg = common::write_config(&dir, "agents: []\n");
    let cli = Cli::parse_from(["am", "--config", cfg.to_str().unwrap(), "lab", "--list"]);
    let mut app = agent_manager::app::App::from_cli(cli).expect("app should build");
    common::isolate(&mut app, &dir);
    std::fs::create_dir_all(app.events_dir().join("lab")).unwrap();
    std::fs::write(app.events_dir().join("lab/hello.yaml"), "name: hello\n").unwrap();

    let code = lab_cmd::run(
        &app,
        &LabArgs {
            agents: None,
            task: None,
            parallel: false,
            timeout: None,
            list: true,
        },
    )
    .unwrap();
    assert_eq!(code, 0);
    let _ = std::fs::remove_dir_all(&dir);
}

#[test]
fn plugin_runs_on_an_emitted_event() {
    let dir = std::env::temp_dir().join(format!("am-plugins-e2e-{}", std::process::id()));
    std::fs::create_dir_all(&dir).unwrap();
    let cfg = common::write_config(&dir, "agents: []\n");
    let cli = Cli::parse_from(["am", "--config", cfg.to_str().unwrap(), "plugins"]);
    let mut app = agent_manager::app::App::from_cli(cli).expect("app should build");
    common::isolate(&mut app, &dir);

    // Install an echo plugin: valid JSON on stdout (contract) + a marker
    // file proving it ran. The absolute path keeps it independent of cwd.
    let pdir = app.events_dir().join("plugins");
    std::fs::create_dir_all(&pdir).unwrap();
    let marker = pdir.join("pong.log");
    let script = format!(
        "#!/bin/sh\ncat >/dev/null\necho '{{\"ok\": true, \"message\": \"pong\"}}' | tee '{}'\n",
        marker.display().to_string().replace('\\', "/")
    );
    std::fs::write(pdir.join("pong.sh"), script).unwrap();
    let script_path = pdir.join("pong.sh").display().to_string().replace('\\', "/");
    std::fs::write(pdir.join("pong.yaml"), format!("command: \"sh {script_path}\"\n")).unwrap();

    // List: the plugin is discovered.
    let code = plugins_cmd::run(&app, &PluginsArgs { test: None }).unwrap();
    assert_eq!(code, 0);

    // --test: the JSON contract is exercised.
    let code = plugins_cmd::run(&app, &PluginsArgs { test: Some("pong".to_string()) }).unwrap();
    assert_eq!(code, 0);

    // A real emitted event fires the plugin (acceptance criterion).
    app.emit(&agent_manager::events::Event::now(
        agent_manager::events::EventKind::Start,
    ));
    assert!(marker.exists(), "the plugin must have run on the emitted event");

    let _ = std::fs::remove_dir_all(&dir);
}

#[test]
fn plugins_list_and_test_are_available_in_cli() {
    let cli = Cli::parse_from(["am", "plugins", "--test", "notify"]);
    match cli.command {
        Some(agent_manager::cli::Command::Plugins(args)) => {
            assert_eq!(args.test.as_deref(), Some("notify"));
        }
        other => panic!("unexpected: {other:?}"),
    }
    let cli = Cli::parse_from(["am", "lab", "--agents", "a,b", "--task", "t.yaml"]);
    match cli.command {
        Some(agent_manager::cli::Command::Lab(args)) => {
            assert_eq!(args.agents.as_deref(), Some("a,b"));
            assert_eq!(args.task, Some(PathBuf::from("t.yaml")));
        }
        other => panic!("unexpected: {other:?}"),
    }
}