package service

import (
	"ai_xhs/database"
	"ai_xhs/models"
)

// FeedbackService 反馈服务
type FeedbackService struct{}

// NewFeedbackService 创建反馈服务
func NewFeedbackService() *FeedbackService {
	return &FeedbackService{}
}

// CreateFeedback 创建反馈
func (fs *FeedbackService) CreateFeedback(feedback *models.Feedback) error {
	return database.DB.Create(feedback).Error
}

// GetFeedbackList 获取反馈列表
func (fs *FeedbackService) GetFeedbackList(userID, page, pageSize int, feedbackType, status string) ([]models.Feedback, int64, error) {
	var feedbacks []models.Feedback
	var total int64

	query := database.DB.Model(&models.Feedback{}).Where("created_user_id = ?", userID)

	// 筛选条件
	if feedbackType != "" {
		query = query.Where("feedback_type = ?", feedbackType)
	}
	if status != "" {
		query = query.Where("status = ?", status)
	}

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

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

	return feedbacks, total, nil
}

// GetFeedbackByID 根据ID获取反馈
func (fs *FeedbackService) GetFeedbackByID(id int) (*models.Feedback, error) {
	var feedback models.Feedback
	if err := database.DB.First(&feedback, id).Error; err != nil {
		return nil, err
	}
	return &feedback, nil
}

// UpdateFeedbackStatus 更新反馈状态（管理员使用）
func (fs *FeedbackService) UpdateFeedbackStatus(id int, status string) error {
	return database.DB.Model(&models.Feedback{}).Where("id = ?", id).Update("status", status).Error
}