package dao

import (
	"context"
	"cms-api/internal/model"
)

// GetById 根据ID获取联系信息
func (dao *ContactDao) GetById(ctx context.Context, id int) (*model.Contact, error) {
	var contact *model.Contact
	err := dao.Ctx(ctx).Where(dao.Columns().Id, id).Scan(&contact)
	if err != nil {
		return nil, err
	}
	return contact, nil
}

// List 获取联系信息列表
func (dao *ContactDao) List(ctx context.Context, req *model.ContactListRequest) ([]*model.Contact, int, error) {
	var (
		contacts []*model.Contact
		total    int
		db       = dao.Ctx(ctx)
	)

	// 添加查询条件
	if req.Status >= 0 {
		db = db.Where(dao.Columns().Status, req.Status)
	}
	if req.Keyword != "" {
		db = db.Where(dao.Columns().Name+" LIKE ? OR "+dao.Columns().Email+" LIKE ? OR "+dao.Columns().Subject+" LIKE ?", 
			"%"+req.Keyword+"%", "%"+req.Keyword+"%", "%"+req.Keyword+"%")
	}
	if req.StartDate != "" {
		db = db.Where(dao.Columns().CreatedAt+" >= ?", req.StartDate)
	}
	if req.EndDate != "" {
		db = db.Where(dao.Columns().CreatedAt+" <= ?", req.EndDate)
	}

	// 获取总数
	count, err := db.Count()
	if err != nil {
		return nil, 0, err
	}
	total = count

	// 分页查询
	offset := (req.Page - 1) * req.PageSize
	err = db.Order(dao.Columns().CreatedAt + " DESC").
		Limit(req.PageSize).
		Offset(offset).
		Scan(&contacts)
	if err != nil {
		return nil, 0, err
	}

	return contacts, total, nil
}

// Create 创建联系信息
func (dao *ContactDao) Create(ctx context.Context, contact *model.Contact) (int64, error) {
	result, err := dao.Ctx(ctx).Data(contact).Insert()
	if err != nil {
		return 0, err
	}
	id, err := result.LastInsertId()
	if err != nil {
		return 0, err
	}
	return id, nil
}

// Update 更新联系信息
func (dao *ContactDao) Update(ctx context.Context, id int, data interface{}) error {
	_, err := dao.Ctx(ctx).Where(dao.Columns().Id, id).Data(data).Update()
	return err
}

// Delete 删除联系信息
func (dao *ContactDao) Delete(ctx context.Context, id int) error {
	_, err := dao.Ctx(ctx).Where(dao.Columns().Id, id).Delete()
	return err
}

// GetCount 获取联系信息总数
func (dao *ContactDao) GetCount(ctx context.Context) (int, error) {
	count, err := dao.Ctx(ctx).Count()
	return count, err
}

// GetCountByStatus 根据状态获取联系信息数
func (dao *ContactDao) GetCountByStatus(ctx context.Context, status int) (int, error) {
	count, err := dao.Ctx(ctx).Where(dao.Columns().Status, status).Count()
	return count, err
}

// GetTodayCount 获取今日新增联系信息数
func (dao *ContactDao) GetTodayCount(ctx context.Context) (int, error) {
	count, err := dao.Ctx(ctx).Where("DATE("+dao.Columns().CreatedAt+") = CURDATE()").Count()
	return count, err
}

// GetWeekCount 获取本周新增联系信息数
func (dao *ContactDao) GetWeekCount(ctx context.Context) (int, error) {
	count, err := dao.Ctx(ctx).Where("YEARWEEK("+dao.Columns().CreatedAt+") = YEARWEEK(NOW())").Count()
	return count, err
}

// GetMonthCount 获取本月新增联系信息数
func (dao *ContactDao) GetMonthCount(ctx context.Context) (int, error) {
	count, err := dao.Ctx(ctx).Where("YEAR("+dao.Columns().CreatedAt+") = YEAR(NOW()) AND MONTH("+dao.Columns().CreatedAt+") = MONTH(NOW())").Count()
	return count, err
}

// GetLatest 获取最新联系信息
func (dao *ContactDao) GetLatest(ctx context.Context, limit int) ([]*model.Contact, error) {
	var contacts []*model.Contact
	err := dao.Ctx(ctx).
		Order(dao.Columns().CreatedAt + " DESC").
		Limit(limit).
		Scan(&contacts)
	return contacts, err
}

// GetUnprocessed 获取未处理的联系信息
func (dao *ContactDao) GetUnprocessed(ctx context.Context, limit int) ([]*model.Contact, error) {
	var contacts []*model.Contact
	err := dao.Ctx(ctx).
		Where(dao.Columns().Status, 0).
		Order(dao.Columns().CreatedAt + " DESC").
		Limit(limit).
		Scan(&contacts)
	return contacts, err
}

// Search 搜索联系信息
func (dao *ContactDao) Search(ctx context.Context, keyword string, page, pageSize int) ([]*model.Contact, int, error) {
	var (
		contacts []*model.Contact
		total    int
		db       = dao.Ctx(ctx)
	)

	// 添加搜索条件
	if keyword != "" {
		db = db.Where(dao.Columns().Name+" LIKE ? OR "+dao.Columns().Email+" LIKE ? OR "+dao.Columns().Subject+" LIKE ? OR "+dao.Columns().Message+" LIKE ?",
			"%"+keyword+"%", "%"+keyword+"%", "%"+keyword+"%", "%"+keyword+"%")
	}

	// 获取总数
	count, err := db.Count()
	if err != nil {
		return nil, 0, err
	}
	total = count

	// 分页查询
	offset := (page - 1) * pageSize
	err = db.Order(dao.Columns().CreatedAt + " DESC").
		Limit(pageSize).
		Offset(offset).
		Scan(&contacts)
	if err != nil {
		return nil, 0, err
	}

	return contacts, total, nil
}

// GetTrends 获取联系信息趋势数据
func (dao *ContactDao) GetTrends(ctx context.Context, days int) ([]map[string]interface{}, error) {
	var trends []map[string]interface{}
	// 这里应该实现趋势数据查询逻辑
	// 暂时返回空数组，实际项目中需要根据具体需求实现
	return trends, nil
}