From 8dca9f95fab909c52cd34fb401f171d22f0065ae Mon Sep 17 00:00:00 2001
From: Iwan Budi Kusnanto <ibk@labhijau.net>
Date: Sat, 27 Aug 2016 01:23:21 +0700
Subject: [PATCH] issues comment API : list, create, edit (#2966)

add `since` query string support to list issue comment
---
 models/issue_comment.go              |  13 +++
 routers/api/v1/api.go                |   6 ++
 routers/api/v1/repo/issue_comment.go | 122 +++++++++++++++++++++++++++
 3 files changed, 141 insertions(+)
 create mode 100644 routers/api/v1/repo/issue_comment.go

diff --git a/models/issue_comment.go b/models/issue_comment.go
index bd1a089ba..8abc06332 100644
--- a/models/issue_comment.go
+++ b/models/issue_comment.go
@@ -11,6 +11,7 @@ import (
 
 	"github.com/Unknwon/com"
 	"github.com/go-xorm/xorm"
+	api "github.com/gogits/go-gogs-client"
 
 	"github.com/gogits/gogs/modules/log"
 	"github.com/gogits/gogs/modules/markdown"
@@ -104,6 +105,18 @@ func (c *Comment) AfterDelete() {
 	}
 }
 
+// APIFormat convert Comment struct to api.Comment struct
+func (c *Comment) APIFormat() *api.Comment {
+	apiComment := &api.Comment{
+		ID:      c.ID,
+		Poster:  c.Poster.APIFormat(),
+		Body:    c.Content,
+		Created: c.Created,
+	}
+
+	return apiComment
+}
+
 // HashTag returns unique hash tag for comment.
 func (c *Comment) HashTag() string {
 	return "issuecomment-" + com.ToStr(c.ID)
diff --git a/routers/api/v1/api.go b/routers/api/v1/api.go
index ffbfce893..16322fbff 100644
--- a/routers/api/v1/api.go
+++ b/routers/api/v1/api.go
@@ -261,6 +261,12 @@ func RegisterRoutes(m *macaron.Macaron) {
 					m.Combo("").Get(repo.ListIssues).Post(bind(api.CreateIssueOption{}), repo.CreateIssue)
 					m.Group("/:index", func() {
 						m.Combo("").Get(repo.GetIssue).Patch(bind(api.EditIssueOption{}), repo.EditIssue)
+
+						m.Group("/comments", func() {
+							m.Combo("").Get(repo.ListIssueComments).Post(bind(api.CreateIssueCommentOption{}), repo.CreateIssueComment)
+							m.Combo("/:id").Patch(bind(api.EditIssueCommentOption{}), repo.EditIssueComment)
+						})
+
 						m.Group("/labels", func() {
 							m.Combo("").Get(repo.ListIssueLabels).
 								Post(bind(api.IssueLabelsOption{}), repo.AddIssueLabels).
diff --git a/routers/api/v1/repo/issue_comment.go b/routers/api/v1/repo/issue_comment.go
new file mode 100644
index 000000000..c3a80f989
--- /dev/null
+++ b/routers/api/v1/repo/issue_comment.go
@@ -0,0 +1,122 @@
+// Copyright 2015 The Gogs Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+package repo
+
+import (
+	"time"
+
+	api "github.com/gogits/go-gogs-client"
+
+	"github.com/gogits/gogs/models"
+	"github.com/gogits/gogs/modules/context"
+	"github.com/gogits/gogs/modules/log"
+)
+
+const (
+	ISO8601Format = "2006-01-02T15:04:05Z"
+)
+
+// ListIssueComments list comments on an issue
+func ListIssueComments(ctx *context.APIContext) {
+	var since time.Time
+	var withSince bool
+
+	// we get the issue instead of comments directly
+	// because to get comments we need to gets issue first,
+	// and there is already comments in the issue
+	issue, err := models.GetIssueByIndex(ctx.Repo.Repository.ID, ctx.ParamsInt64(":index"))
+	if err != nil {
+		ctx.Error(500, "Comments", err)
+		return
+	}
+
+	// parse `since`, by default we don't use `since`
+	if len(ctx.Query("since")) > 0 {
+		var err error
+		since, err = time.Parse(ISO8601Format, ctx.Query("since"))
+		if err == nil {
+			withSince = true
+		}
+	}
+
+	apiComments := []*api.Comment{}
+	for _, comment := range issue.Comments {
+		if withSince && !comment.Created.After(since) {
+			continue
+		}
+		apiComments = append(apiComments, comment.APIFormat())
+	}
+
+	ctx.JSON(200, &apiComments)
+}
+
+// CreateIssueComment create comment on an issue
+func CreateIssueComment(ctx *context.APIContext, form api.CreateIssueCommentOption) {
+	// check issue
+	issue, err := models.GetIssueByIndex(ctx.Repo.Repository.ID, ctx.ParamsInt64(":index"))
+	if err != nil {
+		ctx.Error(500, "Comments", err)
+		return
+	}
+
+	comment := &models.Comment{
+		Content: form.Body,
+	}
+
+	if len(form.Body) == 0 {
+		ctx.Handle(400, "CreateIssueComment:empty content", err)
+		return
+	}
+
+	// create comment
+	comment, err = models.CreateIssueComment(ctx.User, ctx.Repo.Repository, issue, form.Body, []string{})
+	if err != nil {
+		ctx.Handle(500, "CreateIssueComment", err)
+		return
+	}
+
+	log.Trace("Comment created: %d/%d/%d", ctx.Repo.Repository.ID, issue.ID, comment.ID)
+
+	// Refetch from database to assign some automatic values
+	comment, err = models.GetCommentByID(comment.ID)
+	if err != nil {
+		log.Info("Failed to refetch comment:%v", err)
+	}
+	ctx.JSON(201, comment.APIFormat())
+}
+
+// EditIssueComment edits an issue comment
+func EditIssueComment(ctx *context.APIContext, form api.EditIssueCommentOption) {
+	comment, err := models.GetCommentByID(ctx.ParamsInt64(":id"))
+	if err != nil {
+		if models.IsErrCommentNotExist(err) {
+			ctx.Error(404, "GetCommentByID", err)
+		} else {
+			ctx.Handle(500, "GetCommentByID", err)
+		}
+		return
+	}
+
+	if !ctx.IsSigned || (ctx.User.ID != comment.PosterID && !ctx.Repo.IsAdmin()) {
+		ctx.Error(403, "edit comment", err)
+		return
+	} else if comment.Type != models.COMMENT_TYPE_COMMENT {
+		ctx.Error(204, "edit comment", err)
+		return
+	}
+
+	comment.Content = form.Body
+	if len(comment.Content) == 0 {
+		ctx.JSON(200, map[string]interface{}{
+			"content": "",
+		})
+		return
+	}
+
+	if err := models.UpdateComment(comment); err != nil {
+		ctx.Handle(500, "UpdateComment", err)
+		return
+	}
+	ctx.JSON(200, comment.APIFormat())
+}