// ===========================================
// 多班级版班级管理系统 - Go 后端
//
// 开发者: Canglan
// 联系方式: admin@sea-studio.top
// 版权归属: Sea Network Technology Studio
// 许可证: Apache License 2.0
//
// 版权所有 © Sea Network Technology Studio
// ===========================================

package repository

import (
	"gorm.io/gorm"

	"hz-gitea.sea-studio.top/canglan/SharedClassManager/internal/model"
)

// LogRepo 日志数据访问层
type LogRepo struct {
	db *gorm.DB
}

// NewLogRepo 创建日志 Repository
func NewLogRepo(db *gorm.DB) *LogRepo {
	return &LogRepo{db: db}
}

// ========== 操作日志 ==========

// CreateOperationLog 写入操作日志
func (r *LogRepo) CreateOperationLog(log *model.OperationLog) (int64, error) {
	if err := r.db.Create(log).Error; err != nil {
		return 0, err
	}
	return log.LogID, nil
}

// GetOperationLogs 查询操作日志（支持按操作者和班级过滤）
func (r *LogRepo) GetOperationLogs(operatorID int, classID int, operationType string, page, pageSize int) ([]model.OperationLog, int64, error) {
	var logs []model.OperationLog
	var total int64

	query := r.db.Model(&model.OperationLog{}).Where("1 = 1")

	if operatorID > 0 {
		query = query.Where("operator_id = ?", operatorID)
	}
	if classID > 0 {
		query = query.Where("class_id = ?", classID)
	}
	if operationType != "" {
		query = query.Where("operation_type = ?", operationType)
	}

	if err := query.Count(&total).Error; err != nil {
		return nil, 0, err
	}

	offset := (page - 1) * pageSize
	if err := query.Order("created_at DESC").
		Limit(pageSize).
		Offset(offset).
		Find(&logs).Error; err != nil {
		return nil, 0, err
	}

	return logs, total, nil
}

// ========== 登录日志 ==========

// CreateLoginLog 写入登录日志
func (r *LogRepo) CreateLoginLog(log *model.LoginLog) (int64, error) {
	if err := r.db.Create(log).Error; err != nil {
		return 0, err
	}
	return log.LogID, nil
}

// GetRecentLoginFailCount 获取最近 5 分钟内的登录失败次数
func (r *LogRepo) GetRecentLoginFailCount(username string) (int64, error) {
	var count int64
	if err := r.db.Model(&model.LoginLog{}).
		Where("username = ? AND login_result = 0 AND created_at > DATE_SUB(NOW(), INTERVAL 5 MINUTE)", username).
		Count(&count).Error; err != nil {
		return 0, err
	}
	return count, nil
}