140 lines
3.5 KiB
Go
140 lines
3.5 KiB
Go
package postservicelogic
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import (
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"app-cloudep-tweeting-service/internal/domain"
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model "app-cloudep-tweeting-service/internal/model/mongo"
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"context"
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"fmt"
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"strings"
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ers "code.30cm.net/digimon/library-go/errs"
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"code.30cm.net/digimon/library-go/errs/code"
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"google.golang.org/protobuf/proto"
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"app-cloudep-tweeting-service/gen_result/pb/tweeting"
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"app-cloudep-tweeting-service/internal/svc"
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"github.com/zeromicro/go-zero/core/logx"
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)
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type ListPostsLogic struct {
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ctx context.Context
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svcCtx *svc.ServiceContext
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logx.Logger
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}
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func NewListPostsLogic(ctx context.Context, svcCtx *svc.ServiceContext) *ListPostsLogic {
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return &ListPostsLogic{
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ctx: ctx,
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svcCtx: svcCtx,
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Logger: logx.WithContext(ctx),
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}
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}
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// 只列出要驗證的資料
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type listReq struct {
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OnlyAdds int32 `json:"only_adds" validate:"oneof=0 1 2 3"`
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PageSize int64 `json:"page_size" validate:"required"`
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PageIndex int64 `json:"page_index" validate:"required"`
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}
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// ListPostError 0502105 資料庫錯誤
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func ListPostError(s ...string) *ers.LibError {
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return ers.NewError(code.CloudEPTweeting, code.DBError,
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domain.ListPostError.ToUint32(),
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fmt.Sprintf("%s", strings.Join(s, " ")))
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}
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// ListPostErrorL logs error message and returns Error
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func ListPostErrorL(l logx.Logger, filed []logx.LogField, s ...string) *ers.LibError {
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e := ListPostError(s...)
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l.WithCallerSkip(1).WithFields(filed...).Error(e.Error())
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return e
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}
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// 將單個 Post 轉換為 PostDetailItem
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func convertToPostDetailItem(item *model.Post) *tweeting.PostDetailItem {
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media := make([]*tweeting.Media, 0, len(item.MediaURL))
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for _, subItem := range item.MediaURL {
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media = append(media, &tweeting.Media{
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Type: subItem.Type,
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Url: subItem.Links,
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})
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}
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return &tweeting.PostDetailItem{
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PostId: item.ID.Hex(),
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Uid: item.UID,
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Content: item.Content,
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Tags: item.Tags,
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Media: media,
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IsAd: item.IsAd,
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CreatedAt: item.CreateAt,
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UpdateAt: item.UpdateAt,
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LikeCount: int64(item.Like),
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DislikeCount: int64(item.DisLike),
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}
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}
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// ListPosts 查詢貼文 -> 主流程
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func (l *ListPostsLogic) ListPosts(in *tweeting.QueryPostsReq) (*tweeting.ListPostsResp, error) {
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// 將 PageSize 和 PageIndex 提前轉換為 int64
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pageSize := int64(in.GetPageSize())
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pageIndex := int64(in.GetPageIndex())
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// 驗證資料
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if err := l.svcCtx.Validate.ValidateAll(&listReq{
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PageSize: pageSize,
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PageIndex: pageIndex,
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OnlyAdds: in.GetOnlyAds(),
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}); err != nil {
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// 錯誤代碼 05-011-00
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return nil, ers.InvalidFormat(err.Error())
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}
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// 構建查詢條件
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query := &model.QueryPostModelReq{
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UID: in.GetUid(),
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Id: in.GetPostId(),
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PageSize: pageSize,
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PageIndex: pageIndex,
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}
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// 處理 OnlyAds 條件
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if in.OnlyAds != nil {
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onlyAds := in.GetOnlyAds()
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query.OnlyAds = proto.Bool(onlyAds == domain.AdTypeOnlyAd.ToInt32())
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}
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// 執行查詢
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find, count, err := l.svcCtx.PostModel.Find(l.ctx, query)
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if err != nil {
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e := ListPostErrorL(
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logx.WithContext(l.ctx),
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[]logx.LogField{
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{Key: "query", Value: query},
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{Key: "func", Value: "PostModel.Find"},
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{Key: "err", Value: err},
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},
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"failed to find posts").Wrap(err)
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return nil, e
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}
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// 將查詢結果轉換為 API 回應格式
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result := make([]*tweeting.PostDetailItem, 0, count)
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for _, item := range find {
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result = append(result, convertToPostDetailItem(item))
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}
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// 返回結果
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return &tweeting.ListPostsResp{
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Posts: result,
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Page: &tweeting.Pager{
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Total: count,
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Index: pageIndex,
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Size: pageSize,
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},
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}, nil
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}
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