package service

import (
	"time"

	"laic-backend/common"
	"laic-backend/logger"
	"laic-backend/model"
	"laic-backend/tool"
	"laic-backend/vo"
)

type OperationLogService struct{}

var DefaultOperationLogService = &OperationLogService{}

// Record 写入一条操作日志
func (s *OperationLogService) Record(userID int64, userName, module, action, detail, result, ip string) {
	if userID == 0 {
		return
	}
	id, err := tool.NextID()
	if err != nil {
		logger.ERROR("生成操作日志 ID 失败", err)
		return
	}
	log := &model.OperationLog{
		ID:        id,
		UserID:    userID,
		UserName:  userName,
		Module:    module,
		Action:    action,
		Detail:    detail,
		Result:    result,
		IP:        ip,
		CreatedAt: time.Now(),
	}
	if err := common.DB.Create(log).Error; err != nil {
		logger.ERROR("写入操作日志失败", err)
	}
}

func (s *OperationLogService) RecordEvent(userID int64, module, action, detail, result, source string) {
	if len(detail) > 220 {
		detail = detail[:220]
	}
	userName := ""
	var user model.User
	if err := common.DB.Select("name", "phone").First(&user, userID).Error; err == nil {
		userName = user.Name
		if userName == "" {
			userName = user.Phone
		}
	}
	s.Record(userID, userName, module, action, "source="+source+" "+detail, result, "")
}

// GetPage 操作日志分页（admin 全量，user 仅本人）
func (s *OperationLogService) GetPage(req *vo.OperationLogPageReq) (*common.PageResponse[model.OperationLog], *common.BusiError) {
	db := common.DB.Model(&model.OperationLog{})
	if req.UserID > 0 {
		db = db.Where("user_id = ?", req.UserID)
	}
	if req.Module != "" {
		db = db.Where("module = ?", req.Module)
	}
	if req.Action != "" {
		db = db.Where("action = ?", req.Action)
	}
	if req.Result != "" {
		db = db.Where("result = ?", req.Result)
	}
	if req.Keyword != "" {
		kw := "%" + req.Keyword + "%"
		db = db.Where("module LIKE ? OR action LIKE ? OR detail LIKE ?", kw, kw, kw)
	}
	var total int64
	if err := db.Count(&total).Error; err != nil {
		logger.ERROR("统计操作日志失败", err)
		return nil, common.ErrInternal
	}
	var list []model.OperationLog
	if err := db.Scopes(req.Paginate).Order("created_at DESC, id DESC").Find(&list).Error; err != nil {
		logger.ERROR("查询操作日志失败", err)
		return nil, common.ErrInternal
	}
	return common.Page(req.Pagination, total, list), nil
}