<?php

namespace App\Module\OpenAPI\Handlers\User;

use App\Module\OpenAPI\Handlers\BaseHandler;
use App\Module\OpenAPI\Services\ScopeService;
use App\Module\OpenAPI\Enums\SCOPE_TYPE;
use Illuminate\Http\JsonResponse;

/**
 * 用户列表Handler
 * 
 * 处理获取用户列表的业务逻辑
 */
class UserListHandler extends BaseHandler
{
    public function __construct(ScopeService $scopeService)
    {
        parent::__construct($scopeService);
    }

    /**
     * 获取所需的权限范围
     *
     * @return SCOPE_TYPE[]
     */
    public function getRequiredScopes(): array
    {
        return [SCOPE_TYPE::USER_READ];
    }

    /**
     * 处理获取用户列表请求
     *
     * @param array $data 请求数据
     * @param array $context 上下文信息
     * @return JsonResponse
     */
    protected function process(array $data, array $context = []): JsonResponse
    {
        // 验证请求参数
        $validationErrors = $this->validateData($data, [
            'page' => 'integer|min:1',
            'per_page' => 'integer|min:1|max:100',
            'search' => 'string|max:100',
            'status' => 'string|in:active,inactive,banned',
        ]);

        if ($validationErrors) {
            return $this->errorResponse('参数验证失败', $validationErrors, 422);
        }

        // 获取分页参数
        $page = $data['page'] ?? 1;
        $perPage = $data['per_page'] ?? 20;
        $search = $data['search'] ?? '';
        $status = $data['status'] ?? '';

        // 调用User模块服务获取用户列表
        $userList = $this->getUserList($page, $perPage, $search, $status);

        // 记录操作日志
        $this->logAction('user.list.get', [
            'page' => $page,
            'per_page' => $perPage,
            'search' => $search,
            'status' => $status,
        ], $context);

        return $this->successResponse('获取用户列表成功', $userList);
    }

    /**
     * 获取用户列表
     * 
     * 这里应该调用User模块的实际服务
     *
     * @param int $page
     * @param int $perPage
     * @param string $search
     * @param string $status
     * @return array
     */
    protected function getUserList(int $page, int $perPage, string $search, string $status): array
    {
        // TODO: 这里应该调用User模块的服务
        // 例如: return app(UserService::class)->getUserList($page, $perPage, $search, $status);
        
        // 暂时返回示例数据，等待与User模块集成
        $users = [];
        $total = 1000; // 假设总用户数
        
        // 生成示例用户数据
        for ($i = 1; $i <= $perPage; $i++) {
            $userId = ($page - 1) * $perPage + $i;
            if ($userId > $total) break;
            
            $users[] = [
                'id' => $userId,
                'username' => "user{$userId}",
                'nickname' => "用户{$userId}",
                'email' => "user{$userId}@example.com",
                'avatar' => "https://example.com/avatar/{$userId}.jpg",
                'level' => rand(1, 100),
                'status' => $status ?: ['active', 'inactive'][rand(0, 1)],
                'created_at' => now()->subDays(rand(1, 365))->toISOString(),
                'last_login_at' => now()->subHours(rand(1, 24))->toISOString(),
            ];
        }

        return [
            'users' => $users,
            'pagination' => [
                'current_page' => $page,
                'per_page' => $perPage,
                'total' => $total,
                'last_page' => ceil($total / $perPage),
                'from' => ($page - 1) * $perPage + 1,
                'to' => min($page * $perPage, $total),
            ],
            'filters' => [
                'search' => $search,
                'status' => $status,
            ],
        ];
    }
}