package services

import (
	"context"
	"encoding/json"

	"go.uber.org/zap"

	"tyapi-server/internal/domains/admin/entities"
	"tyapi-server/internal/domains/admin/repositories"
)

// AdminService 管理员领域服务
type AdminService struct {
	adminRepo      repositories.AdminRepository
	permissionRepo repositories.AdminPermissionRepository
	logger         *zap.Logger
}

// NewAdminService 创建管理员领域服务
func NewAdminService(
	adminRepo repositories.AdminRepository,
	permissionRepo repositories.AdminPermissionRepository,
	logger *zap.Logger,
) *AdminService {
	return &AdminService{
		adminRepo:      adminRepo,
		permissionRepo: permissionRepo,
		logger:         logger,
	}
}

// GetAdminPermissions 获取管理员权限
func (s *AdminService) GetAdminPermissions(ctx context.Context, admin *entities.Admin) ([]string, error) {
	// 首先从角色获取权限
	rolePermissions, err := s.adminRepo.GetPermissionsByRole(ctx, admin.Role)
	if err != nil {
		return nil, err
	}

	// 从角色权限中提取权限代码
	permissions := make([]string, 0, len(rolePermissions))
	for _, perm := range rolePermissions {
		permissions = append(permissions, perm.Code)
	}

	// 如果有自定义权限，也添加进去
	if admin.Permissions != "" {
		var customPermissions []string
		if err := json.Unmarshal([]byte(admin.Permissions), &customPermissions); err == nil {
			permissions = append(permissions, customPermissions...)
		}
	}

	return permissions, nil
}