package feedbackser

import (
	"context"
	"strings"
	"time"
	"unicode/utf8"
	"videoweb/app/api/proto"
	"videoweb/pub/common/srvdef"
	"videoweb/pub/models/feedbackmod"
)

const (
	feedbackMaxContentLen    = 500
	feedbackMaxContactLen    = 100
	feedbackMaxScreenshotNum = 9
	feedbackSubmitMessage    = "反馈提交成功"
)

const ( //问题类型，1-功能建议、2-播放问题、3-账号问题、4-其他
	FeedbackTypeFeature int32 = 1
	FeedbackTypePlay    int32 = 2
	FeedbackTypeAccount int32 = 3
	FeedbackTypeOther   int32 = 4
)

// AddFeedback 提交用户意见反馈
func AddFeedback(ctx context.Context, userId int64, req *proto.FeedbackReq) (*proto.FeedbackResp, *srvdef.SrvErr) {
	if req == nil || userId <= 0 {
		return nil, srvdef.New(srvdef.ErrParamError, "", "")
	}
	if !isValidFeedbackType(req.Type) {
		return nil, srvdef.New(srvdef.ErrParamError, "问题类型无效")
	}
	content := strings.TrimSpace(req.Content)
	if content == "" || utf8.RuneCountInString(content) > feedbackMaxContentLen {
		return nil, srvdef.New(srvdef.ErrParamError, "描述内容不能为空且不能超过500字")
	}
	contact := strings.TrimSpace(req.Contact)
	if utf8.RuneCountInString(contact) > feedbackMaxContactLen {
		return nil, srvdef.New(srvdef.ErrParamError, "联系方式不能超过100字")
	}
	screenshots := normalizeScreenshots(req.Screenshots)
	if len(screenshots) > feedbackMaxScreenshotNum {
		return nil, srvdef.New(srvdef.ErrParamError, "问题截图不能超过9张")
	}
	now := time.Now()
	doc := &feedbackmod.Feedback{
		UserId:       userId,
		FeedbackType: req.Type,
		Content:      content,
		Screenshots:  screenshots,
		Contact:      contact,
		Status:       0,
		CreatedAt:    now,
		UpdatedAt:    now,
	}
	if err := feedbackmod.InsertOneFeedback(ctx, doc); err != nil {
		return nil, err
	}
	return &proto.FeedbackResp{Message: feedbackSubmitMessage}, nil
}

func isValidFeedbackType(feedbackType int32) bool {
	return feedbackType >= FeedbackTypeFeature && feedbackType <= FeedbackTypeOther
}

func normalizeScreenshots(rawScreenshots []string) []string {
	screenshots := make([]string, 0, len(rawScreenshots))
	for _, screenshot := range rawScreenshots {
		screenshot = strings.TrimSpace(screenshot)
		if screenshot != "" {
			screenshots = append(screenshots, screenshot)
		}
	}
	return screenshots
}