package logic

import (
	"context"
	"strings"

	"juwan-backend/app/community/rpc/internal/svc"
	"juwan-backend/app/community/rpc/pb"

	"github.com/zeromicro/go-zero/core/logx"
)

type SearchCommentsLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
	logx.Logger
}

func NewSearchCommentsLogic(ctx context.Context, svcCtx *svc.ServiceContext) *SearchCommentsLogic {
	return &SearchCommentsLogic{
		ctx:    ctx,
		svcCtx: svcCtx,
		Logger: logx.WithContext(ctx),
	}
}

func (l *SearchCommentsLogic) SearchComments(in *pb.SearchCommentsReq) (*pb.SearchCommentsResp, error) {
	limit := in.GetLimit()
	if limit <= 0 {
		limit = 20
	}
	offset := in.GetPage()
	if offset < 0 {
		offset = 0
	}

	store := l.svcCtx.Store
	store.Mu.RLock()
	defer store.Mu.RUnlock()

	filtered := make([]*pb.Comments, 0, len(store.Comments))
	for _, c := range store.Comments {
		if c.GetDeletedAt() > 0 {
			continue
		}
		if in.GetId() > 0 && c.GetId() != in.GetId() {
			continue
		}
		if in.GetPostId() > 0 && c.GetPostId() != in.GetPostId() {
			continue
		}
		if in.GetAuthorId() > 0 && c.GetAuthorId() != in.GetAuthorId() {
			continue
		}
		if in.Content != nil && !strings.Contains(strings.ToLower(c.GetContent()), strings.ToLower(in.GetContent())) {
			continue
		}
		if in.LikeCount != nil && c.GetLikeCount() != in.GetLikeCount() {
			continue
		}
		cc := *c
		filtered = append(filtered, &cc)
	}

	sortCommentsAsc(filtered)

	if offset >= int64(len(filtered)) {
		return &pb.SearchCommentsResp{Comments: []*pb.Comments{}}, nil
	}
	end := offset + limit
	if end > int64(len(filtered)) {
		end = int64(len(filtered))
	}

	return &pb.SearchCommentsResp{Comments: filtered[offset:end]}, nil
}