generate/protobuf/tweeting.proto

@@ -9,7 +9,8 @@ message OKResp {}
 message NoneReq {}
 
 // 分頁信息
-message Pager {
+message Pager
+{
   int64 total = 1; // 總數量
   int64 size = 2;  // 每頁數量
   int64 index = 3; // 當前頁碼
@@ -18,7 +19,8 @@ message Pager {
 // ========== 貼文區 ===========
 
 // ------ NewPost 新增貼文--------
-message NewPostReq {
+message NewPostReq
+{
   string uid = 1;           // 發佈貼文的用戶ID
   string content = 2;       // 貼文內容
   repeated string tags = 3; // 貼文相關標籤
@@ -26,26 +28,30 @@ message NewPostReq {
   bool is_ad = 5;           // 是否為廣告
 }
 
-message Media {
+message Media
+{
   string type = 1;
   string url = 2;
 }
 
 // 貼文回應
-message PostResp {
+message PostResp
+{
   string post_id = 1; // 創建成功的貼文ID
 }
 
 // ------ DeletePost 刪除貼文 ------
 
 // 刪除貼文的請求
-message DeletePostsReq {
+message DeletePostsReq
+{
   repeated string post_id = 1; // 貼文ID
 }
 
 // ------ UpdatePost 更新貼文 ------
 // 更新貼文的請求
-message UpdatePostReq {
+message UpdatePostReq
+{
   string post_id = 1;               // 貼文ID
   repeated string tags = 2;         // 新的標籤列表
   repeated Media media = 3;         // 這筆文章的所有 Media URL
@@ -56,7 +62,8 @@ message UpdatePostReq {
 
 // ------ListPosts 查詢貼文 ------
 // 查詢貼文的請求
-message QueryPostsReq {
+message QueryPostsReq
+{
   repeated string uid = 1;     // 可選：根據用戶ID篩選貼文
   repeated string post_id = 2; // 可選：根據貼文ID篩選貼文
   optional int32 only_ads = 3; // 可選：是否只顯示廣告 0 不篩選 1 只顯示廣告 2 不顯示廣告
@@ -65,7 +72,8 @@ message QueryPostsReq {
 }
 
 // 貼文詳情
-message PostDetailItem {
+message PostDetailItem
+{
   string post_id = 1;       // 貼文ID
   string uid = 2;           // 發佈用戶ID
   string content = 3;       // 貼文內容
@@ -79,12 +87,14 @@ message PostDetailItem {
 }
 
 // 貼文列表回應
-message ListPostsResp {
+message ListPostsResp
+{
   repeated PostDetailItem posts = 1; // 貼文列表
   Pager page = 2;
 }
 
-message ModifyLikeDislikeCountReq {
+message ModifyLikeDislikeCountReq
+{
   string post_id = 1;      // 貼文的 ID
   int64 reaction_type = 2; // 用戶的反應類型，可能是讚或不讚
   bool is_increment = 3;   // 表示是否增加（true 表示增加，false 表示減少）
@@ -92,7 +102,8 @@ message ModifyLikeDislikeCountReq {
 }
 
 // ========== 定義貼文服務(最基本單位，不要把邏輯放進來，也考慮是否要做快取) ==========
-service PostService {
+service PostService
+{
   // CreatePost 新增貼文
   rpc CreatePost(NewPostReq) returns (PostResp);
   // DeletePost 刪除貼文
@@ -102,3 +113,72 @@ service PostService {
   // ListPosts 查詢貼文
   rpc ListPosts(QueryPostsReq) returns (ListPostsResp);
 }
+
+// =================================================================================================
+
+// ------------ 評論貼文的請求 ------------
+message CommentPostReq
+{
+  string post_id = 1; // 貼文ID
+  string uid = 2;     // 評論者ID
+  string content = 3; // 評論內容
+}
+
+message CommentPostResp
+{
+  string comment_id = 1; // 回應ID
+}
+
+// ------------ 查詢評論的請求 ------------
+message GetCommentsReq
+{
+  string post_id = 1;   // 貼文ID
+  int32 page_index = 2; // 分頁頁碼
+  int32 page_size = 3;  // 每頁顯示數量
+}
+
+// 評論詳情
+message CommentDetail
+{
+  string comment_id = 1;   // 評論ID
+  string uid = 2;          // 評論者ID
+  string content = 3;      // 評論內容
+  int64 created_at = 4;    // 創建時間
+  int64 like_count = 5;    // 讚數
+  int64 dislike_count = 6; // 不喜歡數量
+}
+
+// 評論列表回應
+message GetCommentsResp
+{
+  repeated CommentDetail comments = 1; // 評論列表
+  Pager page = 2;
+}
+
+// ------------ 刪除評論請求 ------------
+message DeleteCommentReq
+{
+  repeated string comment_id = 1; // 評論ID
+}
+
+// 更新評論請求
+message UpdateCommentReq
+{
+  string comment_id = 1;            // 評論ID
+  string content = 2;               // 更新後的評論內容
+  optional int64 like_count = 3;    // 讚數
+  optional int64 dislike_count = 4; // 不喜歡數量
+}
+
+// 定義評論服務
+service CommentService
+{
+  // NewComment 發表評論
+  rpc NewComment(CommentPostReq) returns (CommentPostResp);
+  // GetComments 查詢評論
+  rpc GetComments(GetCommentsReq) returns (GetCommentsResp);
+  // DeleteComment 刪除評論
+  rpc DeleteComment(DeleteCommentReq) returns (OKResp);
+  // UpdateComment 更新評論
+  rpc UpdateComment(UpdateCommentReq) returns (OKResp);
+}

internal/domain/errors.go

@@ -1,5 +1,13 @@
 package domain
 
+import (
+	ers "code.30cm.net/digimon/library-go/errs"
+	"code.30cm.net/digimon/library-go/errs/code"
+	"fmt"
+	"github.com/zeromicro/go-zero/core/logx"
+	"strings"
+)
+
 type ErrorCode uint32
 
 func (e ErrorCode) ToUint32() uint32 {
@@ -15,3 +23,25 @@ const (
 	UpdatePostError
 	ListPostError
 )
+
+const (
+	CommentFoundErrorCode ErrorCode = iota + 10
+	CommentInsertErrorCode
+	CommentDeleteErrorCode
+	CommentUpdateErrorCode
+	CommentListErrorCode
+)
+
+func CommentError(ec ErrorCode, s ...string) *ers.LibError {
+	return ers.NewError(code.CloudEPTweeting, code.DBError,
+		ec.ToUint32(),
+		fmt.Sprintf("%s", strings.Join(s, " ")))
+}
+
+func CommentErrorL(ec ErrorCode,
+	l logx.Logger, filed []logx.LogField, s ...string) *ers.LibError {
+	e := CommentError(ec, s...)
+	l.WithCallerSkip(1).WithFields(filed...).Error(e.Error())
+
+	return e
+}

internal/logic/commentservice/delete_comment_logic.go

@@ -0,0 +1,44 @@
+package commentservicelogic
+
+import (
+	"app-cloudep-tweeting-service/internal/domain"
+	"context"
+
+	"app-cloudep-tweeting-service/gen_result/pb/tweeting"
+	"app-cloudep-tweeting-service/internal/svc"
+
+	"github.com/zeromicro/go-zero/core/logx"
+)
+
+type DeleteCommentLogic struct {
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+	logx.Logger
+}
+
+func NewDeleteCommentLogic(ctx context.Context, svcCtx *svc.ServiceContext) *DeleteCommentLogic {
+	return &DeleteCommentLogic{
+		ctx:    ctx,
+		svcCtx: svcCtx,
+		Logger: logx.WithContext(ctx),
+	}
+}
+
+// DeleteComment 刪除評論
+func (l *DeleteCommentLogic) DeleteComment(in *tweeting.DeleteCommentReq) (*tweeting.OKResp, error) {
+	_, err := l.svcCtx.CommentModel.DeleteMany(l.ctx, in.GetCommentId()...)
+	if err != nil {
+		e := domain.CommentErrorL(
+			domain.CommentDeleteErrorCode,
+			logx.WithContext(l.ctx),
+			[]logx.LogField{
+				{Key: "req", Value: in},
+				{Key: "func", Value: "CommentModel.DeleteMany"},
+				{Key: "err", Value: err},
+			},
+			"failed to del comment").Wrap(err)
+		return nil, e
+	}
+
+	return &tweeting.OKResp{}, nil
+}

internal/logic/commentservice/get_comments_logic.go

@@ -0,0 +1,102 @@
+package commentservicelogic
+
+import (
+	"app-cloudep-tweeting-service/internal/domain"
+	model "app-cloudep-tweeting-service/internal/model/mongo"
+	ers "code.30cm.net/digimon/library-go/errs"
+	"context"
+
+	"app-cloudep-tweeting-service/gen_result/pb/tweeting"
+	"app-cloudep-tweeting-service/internal/svc"
+
+	"github.com/zeromicro/go-zero/core/logx"
+)
+
+type GetCommentsLogic struct {
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+	logx.Logger
+}
+
+func NewGetCommentsLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetCommentsLogic {
+	return &GetCommentsLogic{
+		ctx:    ctx,
+		svcCtx: svcCtx,
+		Logger: logx.WithContext(ctx),
+	}
+}
+
+// 只列出要驗證的資料
+type listReq struct {
+	PostID    string `json:"post_id" validate:"required"`
+	PageSize  int64  `json:"page_size" validate:"required"`
+	PageIndex int64  `json:"page_index" validate:"required"`
+}
+
+// 將單個 Post 轉換為 PostDetailItem
+func convertToCommentDetailItem(item *model.Comment) *tweeting.CommentDetail {
+	return &tweeting.CommentDetail{
+		CommentId:    item.ID.Hex(),
+		Uid:          item.UID,
+		Content:      item.Content,
+		CreatedAt:    item.CreateAt,
+		LikeCount:    int64(item.LikeCount),
+		DislikeCount: int64(item.DisLikeCount),
+	}
+}
+
+// GetComments 查詢評論
+// 目前應該是沒有需求是要看 uid 在哪裡留過言，如果未來業務邏輯有再新增
+func (l *GetCommentsLogic) GetComments(in *tweeting.GetCommentsReq) (*tweeting.GetCommentsResp, error) {
+	// 將 PageSize 和 PageIndex 提前轉換為 int64
+	pageSize := int64(in.GetPageSize())
+	pageIndex := int64(in.GetPageIndex())
+
+	// 驗證資料
+	if err := l.svcCtx.Validate.ValidateAll(&listReq{
+		PageSize:  pageSize,
+		PageIndex: pageIndex,
+		PostID:    in.GetPostId(),
+	}); err != nil {
+		// 錯誤代碼 05-011-00
+		return nil, ers.InvalidFormat(err.Error())
+	}
+
+	// 構建查詢條件
+	query := &model.QueryCommentModelReq{
+		PostID:    in.GetPostId(),
+		PageSize:  pageSize,
+		PageIndex: pageIndex,
+	}
+
+	// 執行查詢
+	find, count, err := l.svcCtx.CommentModel.Find(l.ctx, query)
+	if err != nil {
+		e := domain.CommentErrorL(
+			domain.CommentListErrorCode,
+			logx.WithContext(l.ctx),
+			[]logx.LogField{
+				{Key: "query", Value: query},
+				{Key: "func", Value: "CommentModel.Find"},
+				{Key: "err", Value: err},
+			},
+			"failed to find comment").Wrap(err)
+		return nil, e
+	}
+
+	// 將查詢結果轉換為 API 回應格式
+	result := make([]*tweeting.CommentDetail, 0, count)
+	for _, item := range find {
+		result = append(result, convertToCommentDetailItem(item))
+	}
+
+	// 返回結果
+	return &tweeting.GetCommentsResp{
+		Comments: result,
+		Page: &tweeting.Pager{
+			Total: count,
+			Index: pageIndex,
+			Size:  pageSize,
+		},
+	}, nil
+}

internal/logic/commentservice/new_comment_logic.go

@@ -0,0 +1,95 @@
+package commentservicelogic
+
+import (
+	"app-cloudep-tweeting-service/gen_result/pb/tweeting"
+	"app-cloudep-tweeting-service/internal/domain"
+	model "app-cloudep-tweeting-service/internal/model/mongo"
+	"app-cloudep-tweeting-service/internal/svc"
+	ers "code.30cm.net/digimon/library-go/errs"
+	"context"
+	"errors"
+
+	"github.com/zeromicro/go-zero/core/logx"
+)
+
+type NewCommentLogic struct {
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+	logx.Logger
+}
+
+func NewNewCommentLogic(ctx context.Context, svcCtx *svc.ServiceContext) *NewCommentLogic {
+	return &NewCommentLogic{
+		ctx:    ctx,
+		svcCtx: svcCtx,
+		Logger: logx.WithContext(ctx),
+	}
+}
+
+// 輸入的定義 -> 檢查用
+type newCommentReq struct {
+	UID     string `json:"uid" validate:"required"`
+	Content string `json:"content" validate:"required,lte=500"` // 貼文限制 500 字內
+	PostID  string `json:"post_id" validate:"required"`
+}
+
+// NewComment 發表評論
+func (l *NewCommentLogic) NewComment(in *tweeting.CommentPostReq) (*tweeting.CommentPostResp, error) {
+	// 驗證資料
+	if err := l.svcCtx.Validate.ValidateAll(&newCommentReq{
+		UID:     in.GetUid(),
+		Content: in.GetContent(),
+		PostID:  in.GetPostId(),
+	}); err != nil {
+		// 錯誤代碼 05-011-00
+		return nil, ers.InvalidFormat(err.Error())
+	}
+
+	// 檢查是否有這個文章
+	_, err := l.svcCtx.PostModel.FindOne(l.ctx, in.GetPostId())
+	if err != nil {
+		if errors.Is(model.ErrNotFound, err) {
+			// 錯誤代碼 05-031-00
+			return nil, ers.ResourceNotFound("failed to find post: ", in.GetPostId())
+		}
+		// 錯誤代碼 05-021-10
+		e := domain.CommentErrorL(
+			domain.CommentFoundErrorCode,
+			logx.WithContext(l.ctx),
+			[]logx.LogField{
+				{Key: "req", Value: in},
+				{Key: "func", Value: "PostModel.FindOne"},
+				{Key: "err", Value: err},
+			},
+			"failed to find post:", in.GetPostId()).Wrap(err)
+
+		return nil, e
+	}
+
+	data := &model.Comment{
+		PostID:       in.GetPostId(),
+		UID:          in.GetUid(),
+		Content:      in.GetContent(),
+		LikeCount:    0,
+		DisLikeCount: 0,
+	}
+	err = l.svcCtx.CommentModel.Insert(l.ctx, data)
+	if err != nil {
+		// 錯誤代碼 05-021-11
+		e := domain.CommentErrorL(
+			domain.CommentInsertErrorCode,
+			logx.WithContext(l.ctx),
+			[]logx.LogField{
+				{Key: "req", Value: in},
+				{Key: "func", Value: "CommentModel.Insert"},
+				{Key: "err", Value: err},
+			},
+			"failed to insert comment:", in.GetPostId()).Wrap(err)
+
+		return nil, e
+	}
+
+	return &tweeting.CommentPostResp{
+		CommentId: data.ID.Hex(),
+	}, nil
+}

internal/logic/commentservice/new_comment_logic_test.go

@@ -0,0 +1 @@
+package commentservicelogic

internal/logic/commentservice/update_comment_logic.go

@@ -0,0 +1,81 @@
+package commentservicelogic
+
+import (
+	"app-cloudep-tweeting-service/gen_result/pb/tweeting"
+	"app-cloudep-tweeting-service/internal/domain"
+	model "app-cloudep-tweeting-service/internal/model/mongo"
+	"app-cloudep-tweeting-service/internal/svc"
+	ers "code.30cm.net/digimon/library-go/errs"
+	"context"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+
+	"github.com/zeromicro/go-zero/core/logx"
+)
+
+type UpdateCommentLogic struct {
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+	logx.Logger
+}
+
+func NewUpdateCommentLogic(ctx context.Context, svcCtx *svc.ServiceContext) *UpdateCommentLogic {
+	return &UpdateCommentLogic{
+		ctx:    ctx,
+		svcCtx: svcCtx,
+		Logger: logx.WithContext(ctx),
+	}
+}
+
+type checkCommentId struct {
+	CommentId string `validate:"required"`
+	Content   string `json:"content,omitempty" validate:"lte=500"`
+}
+
+// UpdateComment 更新評論
+func (l *UpdateCommentLogic) UpdateComment(in *tweeting.UpdateCommentReq) (*tweeting.OKResp, error) {
+	// 驗證資料
+	if err := l.svcCtx.Validate.ValidateAll(&checkCommentId{
+		CommentId: in.GetCommentId(),
+		Content:   in.GetContent(),
+	}); err != nil {
+		// 錯誤代碼 05-011-00
+		return nil, ers.InvalidFormat(err.Error())
+	}
+	// 沒有就沒有，有就走全覆蓋
+	update := model.Comment{}
+	oid, err := primitive.ObjectIDFromHex(in.GetCommentId())
+	if err != nil {
+		// 錯誤代碼 05-011-00
+		return nil, ers.InvalidFormat("failed to get correct comment id")
+	}
+	update.ID = oid
+	update.Content = in.GetContent()
+	// 因為 0 也有意義，所以如果是真的沒帶進來，用 -1 帶進去表示不作動
+	if in.LikeCount == nil {
+		update.LikeCount = -1
+	} else {
+		update.LikeCount = in.GetLikeCount()
+	}
+	if in.DislikeCount == nil {
+		update.DisLikeCount = -1
+	} else {
+		update.DisLikeCount = in.GetDislikeCount()
+	}
+
+	_, err = l.svcCtx.CommentModel.UpdateOptional(l.ctx, &update)
+	if err != nil {
+		// 錯誤代碼 05-021-13
+		e := domain.CommentErrorL(
+			domain.CommentUpdateErrorCode,
+			logx.WithContext(l.ctx),
+			[]logx.LogField{
+				{Key: "req", Value: in},
+				{Key: "func", Value: "CommentModel.UpdateOptional"},
+				{Key: "err", Value: err},
+			},
+			"failed to update comment:", in.CommentId).Wrap(err)
+		return nil, e
+	}
+
+	return &tweeting.OKResp{}, nil
+}

internal/logic/postservice/update_post_logic.go

@@ -80,8 +80,19 @@ func (l *UpdatePostLogic) UpdatePost(in *tweeting.UpdatePostReq) (*tweeting.OKRe
 	}
 	update.MediaURL = media
 	update.Content = in.GetContent()
-	update.Like = uint64(in.GetLikeCount())
+
-	update.DisLike = uint64(in.GetDislikeCount())
+	// 因為 0 也有意義，所以如果是真的沒帶進來，用 -1 帶進去表示不作動
+	if in.LikeCount == nil {
+		update.Like = -1
+	} else {
+		update.Like = in.GetLikeCount()
+	}
+
+	if in.DislikeCount == nil {
+		update.DisLike = -1
+	} else {
+		update.DisLike = in.GetDislikeCount()
+	}
 
 	_, err = l.svcCtx.PostModel.UpdateOptional(l.ctx, &update)
 	if err != nil {

internal/model/mongo/comment_model.go

@@ -1,6 +1,14 @@
 package model
 
-import "github.com/zeromicro/go-zero/core/stores/mon"
+import (
+	"context"
+	"github.com/zeromicro/go-zero/core/logx"
+	"github.com/zeromicro/go-zero/core/stores/mon"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"go.mongodb.org/mongo-driver/mongo"
+	"time"
+)
 
 var _ CommentModel = (*customCommentModel)(nil)
 
@@ -9,13 +17,27 @@ type (
 	// and implement the added methods in customCommentModel.
 	CommentModel interface {
 		commentModel
+		DeleteMany(ctx context.Context, id ...string) (int64, error)
+		UpdateOptional(ctx context.Context, data *Comment) (*mongo.UpdateResult, error)
+		Find(ctx context.Context, param *QueryCommentModelReq) ([]*Comment, int64, error)
 	}
 
 	customCommentModel struct {
 		*defaultCommentModel
 	}
+
+	QueryCommentModelReq struct {
+		PostID    string
+		PageSize  int64
+		PageIndex int64
+	}
 )
 
+func (xw customCommentModel) Find(ctx context.Context, param *QueryCommentModelReq) ([]*Comment, int64, error) {
+	// TODO implement me
+	panic("implement me")
+}
+
 // NewCommentModel returns a model for the mongo.
 func NewCommentModel(url, db, collection string) CommentModel {
 	conn := mon.MustNewModel(url, db, collection)
@@ -23,3 +45,56 @@ func NewCommentModel(url, db, collection string) CommentModel {
 		defaultCommentModel: newDefaultCommentModel(conn),
 	}
 }
+
+func (m *defaultCommentModel) DeleteMany(ctx context.Context, id ...string) (int64, error) {
+	objectIDs := make([]primitive.ObjectID, 0, len(id))
+
+	// prepare
+	for _, item := range id {
+		oid, err := primitive.ObjectIDFromHex(item)
+		if err != nil {
+			logx.WithCallerSkip(1).WithFields(
+				logx.Field("func", "defaultPostModel.DeleteMany"),
+				logx.Field("id", item),
+			).Error(err.Error())
+
+			continue
+		}
+		objectIDs = append(objectIDs, oid)
+	}
+
+	// 檢查是否有有效的 ObjectIDs
+	if len(objectIDs) == 0 {
+		return 0, ErrNotFound
+	}
+
+	// 刪除文檔
+	res, err := m.conn.DeleteMany(ctx, bson.M{"_id": bson.M{"$in": objectIDs}})
+	if err != nil {
+		return 0, err
+	}
+
+	return res, err
+}
+
+func (m *defaultCommentModel) UpdateOptional(ctx context.Context, data *Comment) (*mongo.UpdateResult, error) {
+	update := bson.M{"$set": bson.M{}}
+
+	if data.Content != "" {
+		update["$set"].(bson.M)["content"] = data.Content
+	}
+
+	if data.LikeCount != -1 {
+		update["$set"].(bson.M)["like_count"] = data.LikeCount
+	}
+
+	if data.DisLikeCount != -1 {
+		update["$set"].(bson.M)["dis_like_count"] = data.DisLikeCount
+	}
+
+	// UpdateAt 是每次都需要更新的，不用檢查
+	update["$set"].(bson.M)["updateAt"] = time.Now().UTC().UnixNano()
+	res, err := m.conn.UpdateOne(ctx, bson.M{"_id": data.ID}, update)
+
+	return res, err
+}

internal/model/mongo/comment_model_gen.go

@@ -29,8 +29,8 @@ func newDefaultCommentModel(conn *mon.Model) *defaultCommentModel {
 func (m *defaultCommentModel) Insert(ctx context.Context, data *Comment) error {
 	if data.ID.IsZero() {
 		data.ID = primitive.NewObjectID()
-		data.CreateAt = time.Now()
+		data.CreateAt = time.Now().UTC().UnixNano()
-		data.UpdateAt = time.Now()
+		data.UpdateAt = time.Now().UTC().UnixNano()
 	}
 
 	_, err := m.conn.InsertOne(ctx, data)
@@ -57,7 +57,7 @@ func (m *defaultCommentModel) FindOne(ctx context.Context, id string) (*Comment,
 }
 
 func (m *defaultCommentModel) Update(ctx context.Context, data *Comment) (*mongo.UpdateResult, error) {
-	data.UpdateAt = time.Now()
+	data.UpdateAt = time.Now().UTC().UnixNano()
 
 	res, err := m.conn.UpdateOne(ctx, bson.M{"_id": data.ID}, bson.M{"$set": data})
 	return res, err

internal/model/mongo/comment_types.go

@@ -1,14 +1,23 @@
 package model
 
 import (
-	"time"
-
 	"go.mongodb.org/mongo-driver/bson/primitive"
 )
 
 type Comment struct {
 	ID           primitive.ObjectID `bson:"_id,omitempty" json:"id,omitempty"`
-	// TODO: Fill your own fields
+	PostID       string             `bson:"post_id" json:"post_id"`
-	UpdateAt time.Time `bson:"updateAt,omitempty" json:"updateAt,omitempty"`
+	UID          string             `bson:"uid" json:"uid"`                       // 留下留言的人
-	CreateAt time.Time `bson:"createAt,omitempty" json:"createAt,omitempty"`
+	Content      string             `bson:"content" json:"content"`               // 留言內容
+	LikeCount    int64              `bson:"like_count" json:"like_count"`         // 喜歡這則留言的人
+	DisLikeCount int64              `bson:"dis_like_count" json:"dis_like_count"` // 不喜歡這則留言的人
+	UpdateAt     int64              `bson:"updateAt,omitempty" json:"updateAt,omitempty"`
+	CreateAt     int64              `bson:"createAt,omitempty" json:"createAt,omitempty"`
 }
+
+func (c Comment) CollectionName() string {
+	return "comment"
+}
+
+// 照邏輯，應該需要建立的索引有
+// 複合索引：(PostID + CreateAt)

internal/model/mongo/post_model.go

@@ -106,11 +106,11 @@ func (m *defaultPostModel) UpdateOptional(ctx context.Context, data *Post) (*mon
 		update["$set"].(bson.M)["media_url"] = data.MediaURL
 	}
 
-	if data.Like != 0 {
+	if data.Like != -1 {
 		update["$set"].(bson.M)["like"] = data.Like
 	}
 
-	if data.DisLike != 0 {
+	if data.DisLike != -1 {
 		update["$set"].(bson.M)["dislike"] = data.DisLike
 	}
 

internal/model/mongo/post_types.go

@@ -12,8 +12,8 @@ type Post struct {
 	IsAd     bool               `bson:"is_ad" json:"is_ad"`         // 此則貼文是否為廣告貼文 -> 過濾條件
 	Tags     []string           `bson:"tags" json:"tags"`           // 本則貼文的標籤，不提供搜尋，僅提供顯示(存名字，ID 建立之後就不提供修改與刪除)
 	MediaURL []Media            `bson:"media_url" json:"media_url"` // 網址
-	Like     uint64             `bson:"like" json:"like"`           // 讚數量
+	Like     int64              `bson:"like" json:"like"`           // 讚數量
-	DisLike  uint64             `bson:"dislike" json:"dislike"`     // 不讚數量
+	DisLike  int64              `bson:"dislike" json:"dislike"`     // 不讚數量
 	UpdateAt int64              `bson:"updateAt,omitempty" json:"updateAt,omitempty"`
 	CreateAt int64              `bson:"createAt,omitempty" json:"createAt,omitempty"` // -> 排序條件
 }

internal/server/commentservice/comment_service_server.go

@@ -0,0 +1,47 @@
+// Code generated by goctl. DO NOT EDIT.
+// Source: tweeting.proto
+
+package server
+
+import (
+	"context"
+
+	"app-cloudep-tweeting-service/gen_result/pb/tweeting"
+	"app-cloudep-tweeting-service/internal/logic/commentservice"
+	"app-cloudep-tweeting-service/internal/svc"
+)
+
+type CommentServiceServer struct {
+	svcCtx *svc.ServiceContext
+	tweeting.UnimplementedCommentServiceServer
+}
+
+func NewCommentServiceServer(svcCtx *svc.ServiceContext) *CommentServiceServer {
+	return &CommentServiceServer{
+		svcCtx: svcCtx,
+	}
+}
+
+// NewComment 發表評論
+func (s *CommentServiceServer) NewComment(ctx context.Context, in *tweeting.CommentPostReq) (*tweeting.CommentPostResp, error) {
+	l := commentservicelogic.NewNewCommentLogic(ctx, s.svcCtx)
+	return l.NewComment(in)
+}
+
+// GetComments 查詢評論
+func (s *CommentServiceServer) GetComments(ctx context.Context, in *tweeting.GetCommentsReq) (*tweeting.GetCommentsResp, error) {
+	l := commentservicelogic.NewGetCommentsLogic(ctx, s.svcCtx)
+	return l.GetComments(in)
+}
+
+// DeleteComment 刪除評論
+func (s *CommentServiceServer) DeleteComment(ctx context.Context, in *tweeting.DeleteCommentReq) (*tweeting.OKResp, error) {
+	l := commentservicelogic.NewDeleteCommentLogic(ctx, s.svcCtx)
+	return l.DeleteComment(in)
+}
+
+// UpdateComment 更新評論
+func (s *CommentServiceServer) UpdateComment(ctx context.Context, in *tweeting.UpdateCommentReq) (*tweeting.OKResp, error) {
+	l := commentservicelogic.NewUpdateCommentLogic(ctx, s.svcCtx)
+	return l.UpdateComment(in)
+}

internal/server/postservice/post_service_server.go

@@ -7,7 +7,7 @@ import (
 	"context"
 
 	"app-cloudep-tweeting-service/gen_result/pb/tweeting"
-	postservicelogic "app-cloudep-tweeting-service/internal/logic/postservice"
+	"app-cloudep-tweeting-service/internal/logic/postservice"
 	"app-cloudep-tweeting-service/internal/svc"
 )
 
@@ -45,9 +45,3 @@ func (s *PostServiceServer) ListPosts(ctx context.Context, in *tweeting.QueryPos
 	l := postservicelogic.NewListPostsLogic(ctx, s.svcCtx)
 	return l.ListPosts(in)
 }
-
-// ModifyLikeDislikeCount 調整讚或不讚數量
-func (s *PostServiceServer) ModifyLikeDislikeCount(ctx context.Context, in *tweeting.ModifyLikeDislikeCountReq) (*tweeting.OKResp, error) {
-	l := postservicelogic.NewModifyLikeDislikeCountLogic(ctx, s.svcCtx)
-	return l.ModifyLikeDislikeCount(in)
-}

internal/svc/init_mongo.go

@@ -14,7 +14,14 @@ func mustMongoConnectUrl(c config.Config) string {
 	)
 }
 
+// TODO 思考快取做在那邊
+
 func MustPostModel(c config.Config) model.PostModel {
 	postCollection := model.Post{}
 	return model.NewPostModel(mustMongoConnectUrl(c), c.Mongo.Database, postCollection.CollectionName())
 }
+
+func MustCommentModel(c config.Config) model.CommentModel {
+	m := model.Comment{}
+	return model.NewCommentModel(mustMongoConnectUrl(c), c.Mongo.Database, m.CollectionName())
+}

internal/svc/service_context.go

@@ -12,13 +12,14 @@ type ServiceContext struct {
 	Validate vi.Validate
 
 	PostModel    model.PostModel
+	CommentModel model.CommentModel
 }
 
 func NewServiceContext(c config.Config) *ServiceContext {
 	return &ServiceContext{
 		Config:       c,
 		Validate:     vi.MustValidator(),
-
 		PostModel:    MustPostModel(c),
+		CommentModel: MustCommentModel(c),
 	}
 }