//! 角色管理功能测试

use rust_user_api::{
    models::{
        user::User,
        role::{UserRole, Permission, get_role_permissions},
    },
    storage::{database::DatabaseUserStore, memory::MemoryUserStore, UserStore},
    utils::errors::ApiError,
};
use uuid::Uuid;
use chrono::Utc;

/// 创建测试用户
fn create_test_user(username: &str, email: &str, role: UserRole) -> User {
    User {
        id: Uuid::new_v4(),
        username: username.to_string(),
        email: email.to_string(),
        password_hash: "hashed_password".to_string(),
        role,
        created_at: Utc::now(),
        updated_at: Utc::now(),
    }
}

/// 测试角色权限系统
#[test]
fn test_role_permission_system() {
    // 测试角色权限级别
    assert!(UserRole::Admin.permission_level() > UserRole::Manager.permission_level());
    assert!(UserRole::Manager.permission_level() > UserRole::User.permission_level());
    assert!(UserRole::User.permission_level() > UserRole::Guest.permission_level());
    
    // 测试权限检查
    assert!(UserRole::Admin.has_permission(&UserRole::User));
    assert!(UserRole::Manager.has_permission(&UserRole::User));
    assert!(!UserRole::User.has_permission(&UserRole::Manager));
    assert!(!UserRole::Guest.has_permission(&UserRole::User));
}

/// 测试角色字符串转换
#[test]
fn test_role_string_conversion() {
    assert_eq!(UserRole::from_str("admin"), Some(UserRole::Admin));
    assert_eq!(UserRole::from_str("manager"), Some(UserRole::Manager));
    assert_eq!(UserRole::from_str("user"), Some(UserRole::User));
    assert_eq!(UserRole::from_str("guest"), Some(UserRole::Guest));
    assert_eq!(UserRole::from_str("invalid"), None);
    
    assert_eq!(UserRole::Admin.as_str(), "admin");
    assert_eq!(UserRole::Manager.as_str(), "manager");
    assert_eq!(UserRole::User.as_str(), "user");
    assert_eq!(UserRole::Guest.as_str(), "guest");
}

/// 测试权限检查
#[test]
fn test_permission_checks() {
    // 测试基础权限
    assert!(Permission::ReadUser.check_role(&UserRole::Guest));
    assert!(Permission::ReadUser.check_role(&UserRole::User));
    assert!(Permission::ReadUser.check_role(&UserRole::Manager));
    assert!(Permission::ReadUser.check_role(&UserRole::Admin));
    
    // 测试用户权限
    assert!(!Permission::UpdateUser.check_role(&UserRole::Guest));
    assert!(Permission::UpdateUser.check_role(&UserRole::User));
    assert!(Permission::UpdateUser.check_role(&UserRole::Manager));
    assert!(Permission::UpdateUser.check_role(&UserRole::Admin));
    
    // 测试管理员权限
    assert!(!Permission::CreateUser.check_role(&UserRole::Guest));
    assert!(!Permission::CreateUser.check_role(&UserRole::User));
    assert!(Permission::CreateUser.check_role(&UserRole::Manager));
    assert!(Permission::CreateUser.check_role(&UserRole::Admin));
    
    // 测试超级管理员权限
    assert!(!Permission::ManageRoles.check_role(&UserRole::Guest));
    assert!(!Permission::ManageRoles.check_role(&UserRole::User));
    assert!(!Permission::ManageRoles.check_role(&UserRole::Manager));
    assert!(Permission::ManageRoles.check_role(&UserRole::Admin));
}

/// 测试角色权限获取
#[test]
fn test_get_role_permissions() {
    let admin_permissions = get_role_permissions(&UserRole::Admin);
    let manager_permissions = get_role_permissions(&UserRole::Manager);
    let user_permissions = get_role_permissions(&UserRole::User);
    let guest_permissions = get_role_permissions(&UserRole::Guest);
    
    // 管理员应该有最多权限
    assert!(admin_permissions.len() > manager_permissions.len());
    assert!(manager_permissions.len() > user_permissions.len());
    assert!(user_permissions.len() > guest_permissions.len());
    
    // 验证特定权限
    assert!(admin_permissions.contains(&Permission::ManageRoles));
    assert!(!manager_permissions.contains(&Permission::ManageRoles));
    
    assert!(manager_permissions.contains(&Permission::CreateUser));
    assert!(!user_permissions.contains(&Permission::CreateUser));
    
    assert!(user_permissions.contains(&Permission::UpdateUser));
    assert!(!guest_permissions.contains(&Permission::UpdateUser));
    
    assert!(guest_permissions.contains(&Permission::ReadUser));
}

/// 测试内存存储的角色功能
#[tokio::test]
async fn test_memory_store_role_operations() {
    let store = MemoryUserStore::new();
    
    // 创建不同角色的用户
    let admin_user = create_test_user("admin", "admin@example.com", UserRole::Admin);
    let manager_user = create_test_user("manager", "manager@example.com", UserRole::Manager);
    let regular_user = create_test_user("user", "user@example.com", UserRole::User);
    let guest_user = create_test_user("guest", "guest@example.com", UserRole::Guest);
    
    let admin_id = admin_user.id;
    let manager_id = manager_user.id;
    let user_id = regular_user.id;
    let guest_id = guest_user.id;
    
    // 创建用户
    store.create_user(admin_user).await.unwrap();
    store.create_user(manager_user).await.unwrap();
    store.create_user(regular_user).await.unwrap();
    store.create_user(guest_user).await.unwrap();
    
    // 验证角色正确保存
    let retrieved_admin = store.get_user(&admin_id).await.unwrap().unwrap();
    assert_eq!(retrieved_admin.role, UserRole::Admin);
    
    let retrieved_manager = store.get_user(&manager_id).await.unwrap().unwrap();
    assert_eq!(retrieved_manager.role, UserRole::Manager);
    
    let retrieved_user = store.get_user(&user_id).await.unwrap().unwrap();
    assert_eq!(retrieved_user.role, UserRole::User);
    
    let retrieved_guest = store.get_user(&guest_id).await.unwrap().unwrap();
    assert_eq!(retrieved_guest.role, UserRole::Guest);
    
    // 测试角色更新
    let mut updated_user = retrieved_user.clone();
    updated_user.role = UserRole::Manager;
    updated_user.updated_at = Utc::now();
    
    let update_result = store.update_user(&user_id, updated_user).await.unwrap();
    assert!(update_result.is_some());
    assert_eq!(update_result.unwrap().role, UserRole::Manager);
    
    // 验证更新后的角色
    let final_user = store.get_user(&user_id).await.unwrap().unwrap();
    assert_eq!(final_user.role, UserRole::Manager);
}

/// 测试数据库存储的角色功能
#[tokio::test]
async fn test_database_store_role_operations() {
    let database_url = "sqlite::memory:";
    let store = DatabaseUserStore::from_url(database_url).await.unwrap();
    
    // 创建不同角色的用户
    let admin_user = create_test_user("db_admin", "db_admin@example.com", UserRole::Admin);
    let manager_user = create_test_user("db_manager", "db_manager@example.com", UserRole::Manager);
    
    let admin_id = admin_user.id;
    let manager_id = manager_user.id;
    
    // 创建用户
    store.create_user(admin_user).await.unwrap();
    store.create_user(manager_user).await.unwrap();
    
    // 验证角色正确保存到数据库
    let retrieved_admin = store.get_user(&admin_id).await.unwrap().unwrap();
    assert_eq!(retrieved_admin.role, UserRole::Admin);
    
    let retrieved_manager = store.get_user(&manager_id).await.unwrap().unwrap();
    assert_eq!(retrieved_manager.role, UserRole::Manager);
    
    // 测试角色更新
    let mut updated_manager = retrieved_manager.clone();
    updated_manager.role = UserRole::User;
    updated_manager.updated_at = Utc::now();
    
    let update_result = store.update_user(&manager_id, updated_manager).await.unwrap();
    assert!(update_result.is_some());
    assert_eq!(update_result.unwrap().role, UserRole::User);
    
    // 验证数据库中的角色确实被更新
    let final_manager = store.get_user(&manager_id).await.unwrap().unwrap();
    assert_eq!(final_manager.role, UserRole::User);
}

/// 测试角色搜索功能
#[tokio::test]
async fn test_role_based_search() {
    let store = MemoryUserStore::new();
    
    // 创建多个不同角色的用户
    let users = vec![
        create_test_user("admin1", "admin1@example.com", UserRole::Admin),
        create_test_user("admin2", "admin2@example.com", UserRole::Admin),
        create_test_user("manager1", "manager1@example.com", UserRole::Manager),
        create_test_user("manager2", "manager2@example.com", UserRole::Manager),
        create_test_user("manager3", "manager3@example.com", UserRole::Manager),
        create_test_user("user1", "user1@example.com", UserRole::User),
        create_test_user("user2", "user2@example.com", UserRole::User),
        create_test_user("guest1", "guest1@example.com", UserRole::Guest),
    ];
    
    for user in users {
        store.create_user(user).await.unwrap();
    }
    
    // 获取所有用户并按角色分类
    let all_users = store.list_users().await.unwrap();
    
    let admin_count = all_users.iter().filter(|u| u.role == UserRole::Admin).count();
    let manager_count = all_users.iter().filter(|u| u.role == UserRole::Manager).count();
    let user_count = all_users.iter().filter(|u| u.role == UserRole::User).count();
    let guest_count = all_users.iter().filter(|u| u.role == UserRole::Guest).count();
    
    assert_eq!(admin_count, 2);
    assert_eq!(manager_count, 3);
    assert_eq!(user_count, 2);
    assert_eq!(guest_count, 1);
    assert_eq!(all_users.len(), 8);
}

/// 测试角色默认值
#[test]
fn test_role_defaults() {
    let default_role = UserRole::default();
    assert_eq!(default_role, UserRole::User);
    
    // 测试角色辅助方法
    assert!(UserRole::Admin.is_admin());
    assert!(!UserRole::Manager.is_admin());
    
    assert!(UserRole::Admin.is_manager_or_above());
    assert!(UserRole::Manager.is_manager_or_above());
    assert!(!UserRole::User.is_manager_or_above());
    
    assert!(UserRole::User.is_user_or_above());
    assert!(UserRole::Manager.is_user_or_above());
    assert!(!UserRole::Guest.is_user_or_above());
}

/// 测试角色序列化和反序列化
#[test]
fn test_role_serialization() {
    use serde_json;
    
    // 测试序列化
    let admin_role = UserRole::Admin;
    let serialized = serde_json::to_string(&admin_role).unwrap();
    assert_eq!(serialized, "\"admin\"");
    
    let manager_role = UserRole::Manager;
    let serialized = serde_json::to_string(&manager_role).unwrap();
    assert_eq!(serialized, "\"manager\"");
    
    // 测试反序列化
    let deserialized: UserRole = serde_json::from_str("\"admin\"").unwrap();
    assert_eq!(deserialized, UserRole::Admin);
    
    let deserialized: UserRole = serde_json::from_str("\"user\"").unwrap();
    assert_eq!(deserialized, UserRole::User);
}

/// 测试创建用户时的默认角色
#[tokio::test]
async fn test_create_user_default_role() {
    let store = MemoryUserStore::new();
    
    // 创建用户时不指定角色，应该使用默认角色
    let user = User {
        id: Uuid::new_v4(),
        username: "default_role_user".to_string(),
        email: "default@example.com".to_string(),
        password_hash: "hashed_password".to_string(),
        role: UserRole::default(), // 使用默认角色
        created_at: Utc::now(),
        updated_at: Utc::now(),
    };
    
    let user_id = user.id;
    store.create_user(user).await.unwrap();
    
    let retrieved_user = store.get_user(&user_id).await.unwrap().unwrap();
    assert_eq!(retrieved_user.role, UserRole::User); // 默认应该是User角色
}