Golang datastore.Datastore類代碼示例

// NewUser creates a user
func NewUser(ds *datastore.Datastore) httprouter.Handle {
	return func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
		body, err := ioutil.ReadAll(r.Body)
		if err != nil {
			util.JSONError(w, err, http.StatusBadRequest)
			return
		}

		var rd registerData
		err = json.Unmarshal(body, &rd)
		if err != nil {
			util.JSONError(w, err, http.StatusBadRequest)
			return
		}

		user, err := model.CreateUser(rd.Username, rd.Email, rd.Password)
		if err != nil {
			util.JSONError(w, err, http.StatusInternalServerError)
			return
		}

		err = ds.CreateUser(user)
		if err != nil {
			util.JSONError(w, err, http.StatusInternalServerError)
			return
		}

		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(map[string]string{"message": "user created successfully"})
	}
}

// GetBoardPosts returns all the posts on a certain board
func GetBoardPosts(ds *datastore.Datastore) httprouter.Handle {
	return func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		posts, err := ds.GetBoardPostsByName(ps.ByName("board"), 0)
		if err != nil {
			util.JSONError(w, err, http.StatusInternalServerError)
			return
		}

		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(posts)
	}
}

// VoteComment lets a user upvote a comment
func VoteComment(ds *datastore.Datastore) httprouter.Handle {
	return func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		user, err := util.Authenticate(r, ds)
		if err != nil {
			util.JSONError(w, err, http.StatusUnauthorized)
			return
		}

		postID, err := strconv.Atoi(ps.ByName("post_id"))
		if err != nil {
			util.JSONError(w, err, http.StatusBadRequest)
			return
		}

		commentID, err := strconv.Atoi(ps.ByName("comment_id"))
		if err != nil {
			util.JSONError(w, err, http.StatusBadRequest)
			return
		}

		voteStatus, err := strconv.ParseBool(ps.ByName("vote"))
		if err != nil {
			util.JSONError(w, err, http.StatusBadRequest)
			return
		}

		comment, err := ds.GetComment(commentID)
		if err != nil {
			util.JSONError(w, err, http.StatusInternalServerError)
			return
		}

		if postID != comment.PostID {
			util.JSONError(w, err, http.StatusBadRequest)
			return
		}

		v, err := ds.CheckUserCommentVote(user.ID, commentID)
		if v == nil {
			err = ds.SaveVote(model.NewVote("comment", commentID, user.ID, voteStatus))
			if err != nil {
				util.JSONError(w, err, http.StatusInternalServerError)
				return
			}
			return
		}

		v.Up = voteStatus
		err = ds.UpdateVote(v)
		if err != nil {
			util.JSONError(w, err, http.StatusInternalServerError)
			return
		}

		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(map[string]string{"success": "upvoted comment"})
	}
}

// CreateComment creates a new post
func CreateComment(ds *datastore.Datastore) httprouter.Handle {
	return func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		user, err := util.Authenticate(r, ds)
		if err != nil {
			util.JSONError(w, err, http.StatusUnauthorized)
			return
		}

		body, err := ioutil.ReadAll(r.Body)
		if err != nil {
			util.JSONError(w, err, http.StatusBadRequest)
			return
		}

		var nbd newCommentData
		err = json.Unmarshal(body, &nbd)
		if err != nil {
			util.JSONError(w, err, http.StatusBadRequest)
			return
		}

		num, err := strconv.Atoi(ps.ByName("post_id"))
		if err != nil {
			util.JSONError(w, err, http.StatusBadRequest)
			return
		}

		p := &model.Comment{
			UserID:    user.ID,
			PostID:    num,
			CommentID: nbd.ParentID,
			Body:      nbd.Body,
		}

		err = ds.CreateComment(p)
		if err != nil {
			util.JSONError(w, err, http.StatusInternalServerError)
			return
		}

		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(map[string]string{"success": "comment submitted"})
	}
}

// CreateBoard creates a new board
func CreateBoard(ds *datastore.Datastore) httprouter.Handle {
	return func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
		user, err := util.Authenticate(r, ds)
		if err != nil {
			util.JSONError(w, err, http.StatusUnauthorized)
			return
		}

		body, err := ioutil.ReadAll(r.Body)
		if err != nil {
			util.JSONError(w, err, http.StatusBadRequest)
			return
		}

		var nbd newBoardData
		err = json.Unmarshal(body, &nbd)
		if err != nil {
			util.JSONError(w, err, http.StatusBadRequest)
			return
		}

		b := &model.Board{
			Name:    nbd.Name,
			Summary: nbd.Summary,
			Creator: user.Username,
		}

		err = ds.CreateBoard(b)
		if err != nil {
			util.JSONError(w, err, http.StatusBadRequest)
			return
		}

		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(map[string]string{"success": "board submitted for approval"})
	}
}