//! 集成测试 (Phase 1 + Phase 2)

use axum::{
    body::Body,
    http::{Request, StatusCode},
};
use serde_json::json;
use tower::ServiceExt;

const MAX_BODY_SIZE: usize = 1024 * 1024; // 1MB

async fn build_test_app() -> axum::Router {
    use zclaw_saas::{config::SaaSConfig, db::init_memory_db, state::AppState};

    let db = init_memory_db().await.unwrap();
    let mut config = SaaSConfig::default();
    config.auth.jwt_expiration_hours = 24;
    let state = AppState::new(db, config);

    let public_routes = zclaw_saas::auth::routes();

    let protected_routes = zclaw_saas::auth::protected_routes()
        .merge(zclaw_saas::account::routes())
        .merge(zclaw_saas::model_config::routes())
        .layer(axum::middleware::from_fn_with_state(
            state.clone(),
            zclaw_saas::auth::auth_middleware,
        ));

    axum::Router::new()
        .merge(public_routes)
        .merge(protected_routes)
        .with_state(state)
}

/// 注册并登录，返回 JWT token
async fn register_and_login(app: &axum::Router, username: &str, email: &str) -> String {
    let register_req = Request::builder()
        .method("POST")
        .uri("/api/v1/auth/register")
        .header("Content-Type", "application/json")
        .body(Body::from(serde_json::to_string(&json!({
            "username": username,
            "email": email,
            "password": "password123"
        })).unwrap()))
        .unwrap();
    app.clone().oneshot(register_req).await.unwrap();

    let login_req = Request::builder()
        .method("POST")
        .uri("/api/v1/auth/login")
        .header("Content-Type", "application/json")
        .body(Body::from(serde_json::to_string(&json!({
            "username": username,
            "password": "password123"
        })).unwrap()))
        .unwrap();

    let resp = app.clone().oneshot(login_req).await.unwrap();
    let body_bytes = axum::body::to_bytes(resp.into_body(), MAX_BODY_SIZE).await.unwrap();
    let body: serde_json::Value = serde_json::from_slice(&body_bytes).unwrap();
    body["token"].as_str().unwrap().to_string()
}

fn auth_header(token: &str) -> String {
    format!("Bearer {}", token)
}

#[tokio::test]
async fn test_register_and_login() {
    let app = build_test_app().await;
    let token = register_and_login(&app, "testuser", "test@example.com").await;
    assert!(!token.is_empty());
}

#[tokio::test]
async fn test_register_duplicate_fails() {
    let app = build_test_app().await;

    let body = json!({
        "username": "dupuser",
        "email": "dup@example.com",
        "password": "password123"
    });

    let req = Request::builder()
        .method("POST")
        .uri("/api/v1/auth/register")
        .header("Content-Type", "application/json")
        .body(Body::from(serde_json::to_string(&body).unwrap()))
        .unwrap();

    let resp = app.clone().oneshot(req).await.unwrap();
    assert_eq!(resp.status(), StatusCode::CREATED);

    let req = Request::builder()
        .method("POST")
        .uri("/api/v1/auth/register")
        .header("Content-Type", "application/json")
        .body(Body::from(serde_json::to_string(&body).unwrap()))
        .unwrap();

    let resp = app.oneshot(req).await.unwrap();
    assert_eq!(resp.status(), StatusCode::CONFLICT);
}

#[tokio::test]
async fn test_unauthorized_access() {
    let app = build_test_app().await;

    let req = Request::builder()
        .method("GET")
        .uri("/api/v1/accounts")
        .body(Body::empty())
        .unwrap();

    let resp = app.oneshot(req).await.unwrap();
    assert_eq!(resp.status(), StatusCode::UNAUTHORIZED);
}

#[tokio::test]
async fn test_login_wrong_password() {
    let app = build_test_app().await;
    register_and_login(&app, "wrongpwd", "wrongpwd@example.com").await;

    let req = Request::builder()
        .method("POST")
        .uri("/api/v1/auth/login")
        .header("Content-Type", "application/json")
        .body(Body::from(serde_json::to_string(&json!({
            "username": "wrongpwd",
            "password": "wrong_password"
        })).unwrap()))
        .unwrap();

    let resp = app.oneshot(req).await.unwrap();
    assert_eq!(resp.status(), StatusCode::UNAUTHORIZED);
}

#[tokio::test]
async fn test_full_authenticated_flow() {
    let app = build_test_app().await;
    let token = register_and_login(&app, "fulltest", "full@example.com").await;

    // 创建 API Token
    let create_token_req = Request::builder()
        .method("POST")
        .uri("/api/v1/tokens")
        .header("Content-Type", "application/json")
        .header("Authorization", auth_header(&token))
        .body(Body::from(serde_json::to_string(&json!({
            "name": "test-token",
            "permissions": ["model:read", "relay:use"]
        })).unwrap()))
        .unwrap();

    let resp = app.clone().oneshot(create_token_req).await.unwrap();
    assert_eq!(resp.status(), StatusCode::OK);
    let body_bytes = axum::body::to_bytes(resp.into_body(), MAX_BODY_SIZE).await.unwrap();
    let body: serde_json::Value = serde_json::from_slice(&body_bytes).unwrap();
    assert!(!body["token"].is_null());

    // 列出 Tokens
    let list_req = Request::builder()
        .method("GET")
        .uri("/api/v1/tokens")
        .header("Authorization", auth_header(&token))
        .body(Body::empty())
        .unwrap();

    let resp = app.clone().oneshot(list_req).await.unwrap();
    assert_eq!(resp.status(), StatusCode::OK);

    // 查看操作日志
    let logs_req = Request::builder()
        .method("GET")
        .uri("/api/v1/logs/operations")
        .header("Authorization", auth_header(&token))
        .body(Body::empty())
        .unwrap();

    let resp = app.oneshot(logs_req).await.unwrap();
    assert_eq!(resp.status(), StatusCode::OK);
}

// ============ Phase 2: 模型配置测试 ============

#[tokio::test]
async fn test_providers_crud() {
    let app = build_test_app().await;
    // 注册 super_admin 角色用户 (通过直接插入角色权限)
    let token = register_and_login(&app, "adminprov", "adminprov@example.com").await;

    // 创建 provider (普通用户无权限 → 403)
    let create_req = Request::builder()
        .method("POST")
        .uri("/api/v1/providers")
        .header("Content-Type", "application/json")
        .header("Authorization", auth_header(&token))
        .body(Body::from(serde_json::to_string(&json!({
            "name": "test-provider",
            "display_name": "Test Provider",
            "base_url": "https://api.example.com/v1"
        })).unwrap()))
        .unwrap();

    let resp = app.clone().oneshot(create_req).await.unwrap();
    // user 角色默认无 provider:manage 权限 → 403
    assert_eq!(resp.status(), StatusCode::FORBIDDEN);

    // 列出 providers (只读权限 → 200)
    let list_req = Request::builder()
        .method("GET")
        .uri("/api/v1/providers")
        .header("Authorization", auth_header(&token))
        .body(Body::empty())
        .unwrap();

    let resp = app.clone().oneshot(list_req).await.unwrap();
    assert_eq!(resp.status(), StatusCode::OK);
}

#[tokio::test]
async fn test_models_list_and_usage() {
    let app = build_test_app().await;
    let token = register_and_login(&app, "modeluser", "modeluser@example.com").await;

    // 列出模型 (空列表)
    let list_req = Request::builder()
        .method("GET")
        .uri("/api/v1/models")
        .header("Authorization", auth_header(&token))
        .body(Body::empty())
        .unwrap();

    let resp = app.clone().oneshot(list_req).await.unwrap();
    assert_eq!(resp.status(), StatusCode::OK);
    let body_bytes = axum::body::to_bytes(resp.into_body(), MAX_BODY_SIZE).await.unwrap();
    let body: serde_json::Value = serde_json::from_slice(&body_bytes).unwrap();
    assert!(body.is_array());
    assert_eq!(body.as_array().unwrap().len(), 0);

    // 查看用量统计
    let usage_req = Request::builder()
        .method("GET")
        .uri("/api/v1/usage")
        .header("Authorization", auth_header(&token))
        .body(Body::empty())
        .unwrap();

    let resp = app.clone().oneshot(usage_req).await.unwrap();
    assert_eq!(resp.status(), StatusCode::OK);
    let body_bytes = axum::body::to_bytes(resp.into_body(), MAX_BODY_SIZE).await.unwrap();
    let body: serde_json::Value = serde_json::from_slice(&body_bytes).unwrap();
    assert_eq!(body["total_requests"], 0);
}

#[tokio::test]
async fn test_api_keys_lifecycle() {
    let app = build_test_app().await;
    let token = register_and_login(&app, "keyuser", "keyuser@example.com").await;

    // 列出 keys (空)
    let list_req = Request::builder()
        .method("GET")
        .uri("/api/v1/keys")
        .header("Authorization", auth_header(&token))
        .body(Body::empty())
        .unwrap();
    let resp = app.clone().oneshot(list_req).await.unwrap();
    assert_eq!(resp.status(), StatusCode::OK);

    // 创建 key (需要已有 provider → 404 或由 service 层验证)
    let create_req = Request::builder()
        .method("POST")
        .uri("/api/v1/keys")
        .header("Content-Type", "application/json")
        .header("Authorization", auth_header(&token))
        .body(Body::from(serde_json::to_string(&json!({
            "provider_id": "nonexistent",
            "key_value": "sk-test-12345",
            "key_label": "Test Key"
        })).unwrap()))
        .unwrap();

    let resp = app.clone().oneshot(create_req).await.unwrap();
    // provider 不存在 → 404
    assert_eq!(resp.status(), StatusCode::NOT_FOUND);
}