use axum::{
    body::Body,
    http::{Request, StatusCode},
};
use http_body_util::BodyExt;
use serde_json::Value;
use tempfile::TempDir;
use tower::ServiceExt;

async fn test_app() -> (axum::Router, TempDir) {
    let temp_dir = TempDir::new().expect("temporary directory should be created");
    let pool = task_pilot_backend::database::connect("sqlite::memory:")
        .await
        .expect("test database should initialize");
    let app = task_pilot_backend::app(pool, temp_dir.path().join("logs"))
        .await
        .expect("test app should start");
    (app, temp_dir)
}

#[tokio::test]
async fn health_endpoint_returns_service_metadata() {
    let (app, _temp_dir) = test_app().await;
    let response = app
        .oneshot(
            Request::builder()
                .uri("/api/v1/health")
                .body(Body::empty())
                .expect("request should build"),
        )
        .await
        .expect("router should respond");

    assert_eq!(response.status(), StatusCode::OK);

    let body = response
        .into_body()
        .collect()
        .await
        .expect("response body should be readable")
        .to_bytes();
    let json: Value = serde_json::from_slice(&body).expect("response should be JSON");

    assert_eq!(json["status"], "ok");
    assert_eq!(json["service"], "task-pilot-backend");
    assert_eq!(json["version"], env!("CARGO_PKG_VERSION"));
}

#[tokio::test]
async fn openapi_endpoint_describes_health_api() {
    let (app, _temp_dir) = test_app().await;
    let response = app
        .oneshot(
            Request::builder()
                .uri("/api/v1/openapi.json")
                .body(Body::empty())
                .expect("request should build"),
        )
        .await
        .expect("router should respond");

    assert_eq!(response.status(), StatusCode::OK);

    let body = response
        .into_body()
        .collect()
        .await
        .expect("response body should be readable")
        .to_bytes();
    let json: Value = serde_json::from_slice(&body).expect("response should be JSON");

    assert_eq!(json["info"]["title"], "TaskPilot API");
    assert!(json["paths"]["/api/v1/health"]["get"].is_object());
}