use editor_adapter_api::EditorAdapter;
use serde_json::json;
use std::path::PathBuf;
use std::time::{Duration, Instant};
use unity_editor_bridge::{
    configure_helper_candidates, disconnect_unity_editor, execute_unity_editor_code_for_project,
    UnityEditorAdapter,
};

const MAX_MESSAGE_BYTES: usize = unity_editor_bridge::MAX_MESSAGE_BYTES;
#[path = "../src/transport.rs"]
mod transport;

fn fixture() -> (tempfile::TempDir, PathBuf) {
    let directory = tempfile::tempdir().unwrap();
    let executable = directory
        .path()
        .join("dotnet/publish/win-x64/Agc.Unity.Attach.exe");
    std::fs::create_dir_all(executable.parent().unwrap()).unwrap();
    std::fs::copy(
        env!("CARGO_BIN_EXE_unity-bridge-protocol-fixture"),
        &executable,
    )
    .unwrap();
    (directory, executable)
}

fn project() -> tempfile::TempDir {
    let directory = tempfile::tempdir().unwrap();
    for path in ["Assets", "Packages", "ProjectSettings"] {
        std::fs::create_dir(directory.path().join(path)).unwrap();
    }
    std::fs::write(
        directory.path().join("ProjectSettings/ProjectVersion.txt"),
        "m_EditorVersion: 6000.0.0f1\n",
    )
    .unwrap();
    directory
}

#[test]
#[cfg(all(windows, target_arch = "x86_64"))]
fn shared_service_executes_serially_and_retains_uncertain_state_across_instances() {
    let (_fixture, executable) = fixture();
    let project = project();
    let project_path = project.path().to_string_lossy().into_owned();
    configure_helper_candidates(vec![executable.clone()]).unwrap();
    std::env::set_var("AGC_TEST_PROVIDER_SECRET", "must-not-reach-helper");
    let first = execute_unity_editor_code_for_project(&project_path, "success", 1000).unwrap();
    std::env::remove_var("AGC_TEST_PROVIDER_SECRET");
    assert_eq!(first["status"], "completed");
    assert_eq!(first["result"]["secretInherited"], false);
    for code in ["known_failure", "not_dispatched"] {
        assert_eq!(
            execute_unity_editor_code_for_project(&project_path, code, 1000).unwrap()["status"],
            "failed"
        );
    }
    let adapter = UnityEditorAdapter::new(vec![executable.clone()]);
    assert_eq!(
        adapter
            .rpc(
                "editor.execute",
                json!({"projectPath":project_path,"code":"success","timeoutMs":1000})
            )
            .unwrap()["status"],
        "completed"
    );
    let path = project_path.clone();
    let executing =
        std::thread::spawn(move || execute_unity_editor_code_for_project(&path, "delay", 1000));
    std::thread::sleep(Duration::from_millis(50));
    let start = Instant::now();
    assert!(
        execute_unity_editor_code_for_project(&project_path, "success", 1000).unwrap()["error"]
            ["message"]
            .as_str()
            .unwrap()
            .contains("正在执行")
    );
    assert!(start.elapsed() < Duration::from_millis(150));
    disconnect_unity_editor();
    assert_eq!(executing.join().unwrap().unwrap()["status"], "completed");
    let next = execute_unity_editor_code_for_project(&project_path, "success", 1000).unwrap();
    assert_ne!(first["result"]["fixturePid"], next["result"]["fixturePid"]);
    let invalid = execute_unity_editor_code_for_project(&project_path, "wrong_id", 1000).unwrap();
    assert_eq!(invalid["status"], "needs-reconciliation");
    disconnect_unity_editor();
    configure_helper_candidates(vec![executable.clone()]).unwrap();
    let recreated = UnityEditorAdapter::new(vec![executable]);
    assert_eq!(
        recreated
            .rpc(
                "execute",
                json!({"projectPath":project_path,"code":"success"})
            )
            .unwrap()["status"],
        "needs-reconciliation"
    );
}

#[test]
fn helper_timeout_eof_oversized_frame_and_blocked_write_are_bounded() {
    let (_fixture, executable) = fixture();
    for code in ["eof", "overflow", "no_response"] {
        let mut process = transport::HelperProcess::spawn(&executable).unwrap();
        let result = process.exchange(
            &json!({"id":1,"method":"execute","params":{"code":code}}),
            Instant::now() + Duration::from_millis(300),
        );
        assert!(result.is_err());
        let start = Instant::now();
        drop(process);
        assert!(start.elapsed() < Duration::from_secs(3));
    }
    let mut process = transport::HelperProcess::spawn(&executable).unwrap();
    process
        .exchange(
            &json!({"id":1,"method":"execute","params":{"code":"stop_reading"}}),
            Instant::now() + Duration::from_secs(2),
        )
        .unwrap();
    let start = Instant::now();
    assert!(process
        .exchange(
            &json!({"payload":"x".repeat(1024*1024)}),
            Instant::now() + Duration::from_millis(100)
        )
        .is_err());
    drop(process);
    assert!(start.elapsed() < Duration::from_secs(3));
}