<?php
declare (strict_types=1);

namespace app\controller;

use app\BaseController;
use app\service\PermissionService;
use think\facade\Request;

class Permission extends BaseController
{
    /**
     * 获取所有权限配置
     */
    public function list()
    {
        $loginInfo = checkUserLogin();
        if (!$loginInfo) {
            return json_error([], '请先登录');
        }
        
        if (!checkPermission($loginInfo, 'Permission', 'list')) {
            return json_error([], '没有查看权限配置的权限');
        }
        
        try {
            $permissions = PermissionService::getAllPermissions();
            $tree = PermissionService::formatPermissionsToTree();
            
            return json_success([
                'permissions' => $permissions,
                'tree' => $tree
            ], '获取权限配置成功');
        } catch (\Exception $e) {
            return json_error([], '获取权限配置失败：' . $e->getMessage());
        }
    }

    /**
     * 获取权限组配置
     */
    public function getGroups()
    {
        $loginInfo = checkUserLogin();
        if (!$loginInfo) {
            return json_error([], '请先登录');
        }
        
        if (!checkPermission($loginInfo, 'Permission', 'list')) {
            return json_error([], '没有查看权限配置的权限');
        }
        
        try {
            $groups = PermissionService::getPermissionGroups();
            return json_success($groups, '获取权限组配置成功');
        } catch (\Exception $e) {
            return json_error([], '获取权限组配置失败：' . $e->getMessage());
        }
    }

    /**
     * 根据权限组获取权限
     */
    public function getPermissionsByGroup()
    {
        $loginInfo = checkUserLogin();
        if (!$loginInfo) {
            return json_error([], '请先登录');
        }
        
        if (!checkPermission($loginInfo, 'Permission', 'list')) {
            return json_error([], '没有查看权限配置的权限');
        }

        $groupName = Request::get('group', '', 'trim');
        if (empty($groupName)) {
            return json_error([], '权限组名称不能为空');
        }

        try {
            $permissions = PermissionService::getPermissionsByGroup($groupName);
            $formatted = PermissionService::formatUserPermissions($permissions);
            
            return json_success([
                'permissions' => $permissions,
                'formatted' => $formatted
            ], '获取权限组权限成功');
        } catch (\Exception $e) {
            return json_error([], '获取权限组权限失败：' . $e->getMessage());
        }
    }

    /**
     * 验证权限格式
     */
    public function validatePermissions()
    {
        $loginInfo = checkUserLogin();
        if (!$loginInfo) {
            return json_error([], '请先登录');
        }
        
        if (!checkPermission($loginInfo, 'Permission', 'assign')) {
            return json_error([], '没有分配权限的权限');
        }

        $permissions = Request::post('permissions', []);
        
        // 如果是前端格式的权限，先转换
        if (isset($permissions[0]) && is_string($permissions[0])) {
            $permissions = PermissionService::parsePermissionsFromFrontend($permissions);
        }

        try {
            $isValid = PermissionService::validatePermissions($permissions);
            
            return json_success([
                'valid' => $isValid,
                'permissions' => $permissions
            ], $isValid ? '权限格式正确' : '权限格式错误');
        } catch (\Exception $e) {
            return json_error([], '验证权限格式失败：' . $e->getMessage());
        }
    }

    /**
     * 格式化权限（前端格式转后端格式）
     */
    public function formatPermissions()
    {
        $loginInfo = checkUserLogin();
        if (!$loginInfo) {
            return json_error([], '请先登录');
        }

        $permissions = Request::post('permissions', []);
        $format = Request::post('format', 'backend'); // frontend 或 backend

        try {
            if ($format === 'frontend') {
                // 后端格式转前端格式
                $formatted = PermissionService::formatUserPermissions($permissions);
            } else {
                // 前端格式转后端格式
                $formatted = PermissionService::parsePermissionsFromFrontend($permissions);
            }
            
            return json_success([
                'original' => $permissions,
                'formatted' => $formatted
            ], '权限格式转换成功');
        } catch (\Exception $e) {
            return json_error([], '权限格式转换失败：' . $e->getMessage());
        }
    }
}