-
-
Notifications
You must be signed in to change notification settings - Fork 40
/
comment.go
252 lines (214 loc) · 5.46 KB
/
comment.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
package server
import (
"time"
"github.com/discuitnet/discuit/core"
"github.com/discuitnet/discuit/internal/httperr"
msql "github.com/discuitnet/discuit/internal/sql"
"github.com/discuitnet/discuit/internal/uid"
)
// /api/posts/:postID/comments [GET]
func (s *Server) getComments(w *responseWriter, r *request) error {
post, err := core.GetPost(r.ctx, s.db, nil, r.muxVar("postID"), r.viewer, true)
if err != nil {
return err
}
query := r.urlQueryParams()
// Reply comments.
parentIDText := query.Get("parentId")
if parentIDText != "" {
parentID, err := strToID(parentIDText)
if err != nil {
return err
}
comments, err := post.GetCommentReplies(r.ctx, r.viewer, parentID)
if err != nil {
return err
}
return w.writeJSON(comments)
}
var (
nextText = query.Get("next")
nextPoints int
nextID *uid.ID
)
if nextText != "" {
if nextPoints, nextID, err = core.NextPointsIDCursor(nextText); err != nil {
return core.ErrInvalidFeedCursor
}
}
var cursor *core.CommentsCursor
if nextID != nil {
cursor = new(core.CommentsCursor)
cursor.Upvotes = nextPoints
cursor.NextID = *nextID
}
if _, err = post.GetComments(r.ctx, r.viewer, cursor); err != nil {
return err
}
res := struct {
Comments []*core.Comment `json:"comments"`
Next msql.NullString `json:"next"`
}{
Comments: post.Comments,
Next: post.CommentsNext,
}
return w.writeJSON(res)
}
// /api/:commentID [GET]
func (s *Server) getComment(w *responseWriter, r *request) error {
commentID, err := strToID(r.muxVar("commentID"))
if err != nil {
return err
}
comment, err := core.GetComment(r.ctx, s.db, commentID, r.viewer)
if err != nil {
return err
}
return w.writeJSON(comment)
}
// /api/posts/:postID/comments [POST]
func (s *Server) addComment(w *responseWriter, r *request) error {
if !r.loggedIn {
return errNotLoggedIn
}
if err := s.rateLimit(r, "add_comment_1_"+r.viewer.String(), time.Second*5, 2); err != nil {
return err
}
if err := s.rateLimit(r, "add_comment_2_"+r.viewer.String(), time.Hour*24, 300); err != nil {
return err
}
req := struct {
ParentCommentID uid.NullID `json:"parentCommentId"`
Body string `json:"body"`
}{}
if err := r.unmarshalJSONBody(&req); err != nil {
return err
}
postID := r.muxVar("postID")
post, err := core.GetPost(r.ctx, s.db, nil, postID, nil, true)
if err != nil {
return err
}
var as core.UserGroup = core.UserGroupNormal
if _as := r.urlQueryParams().Get("userGroup"); _as != "" {
if err = as.UnmarshalText([]byte(_as)); err != nil {
return err
}
}
var parentID *uid.ID
if req.ParentCommentID.Valid {
parentID = &req.ParentCommentID.ID
}
comment, err := post.AddComment(r.ctx, *r.viewer, as, parentID, req.Body)
if err != nil {
return err
}
// +1 your own comment.
comment.Vote(r.ctx, *r.viewer, true)
return w.writeJSON(comment)
}
// /api/posts/:postID/comments/:commentID [PUT]
func (s *Server) updateComment(w *responseWriter, r *request) error {
if !r.loggedIn {
return errNotLoggedIn
}
if err := s.rateLimitUpdateContent(r, *r.viewer); err != nil {
return err
}
commentID, err := strToID(r.muxVar("commentID"))
if err != nil {
return err
}
comment, err := core.GetComment(r.ctx, s.db, commentID, r.viewer)
if err != nil {
return err
}
query := r.urlQueryParams()
action := query.Get("action")
if action == "" {
var tcom core.Comment
if err := r.unmarshalJSONBody(&tcom); err != nil {
return err
}
// Override updatable fields.
comment.Body = tcom.Body
if err = comment.Save(r.ctx, *r.viewer); err != nil {
return err
}
} else {
switch action {
case "changeAsUser":
var g core.UserGroup
if err = g.UnmarshalText([]byte(query.Get("userGroup"))); err != nil {
return err
}
if err = comment.ChangeUserGroup(r.ctx, *r.viewer, g); err != nil {
return err
}
default:
return httperr.NewBadRequest("invalid_action", "Unsupported action.")
}
}
return w.writeJSON(comment)
}
// /api/posts/:postID/comments/:commentID [DELETE]
func (s *Server) deleteComment(w *responseWriter, r *request) error {
if !r.loggedIn {
return errNotLoggedIn
}
if err := s.rateLimitUpdateContent(r, *r.viewer); err != nil {
return err
}
commentID, err := strToID(r.muxVar("commentID"))
if err != nil {
return err
}
comment, err := core.GetComment(r.ctx, s.db, commentID, r.viewer)
if err != nil {
return err
}
query := r.urlQueryParams()
deleteAs := core.UserGroupNormal
if _deleteAs := query.Get("deleteAs"); _deleteAs != "" {
if err = deleteAs.UnmarshalText([]byte(_deleteAs)); err != nil {
return err
}
}
if err := comment.Delete(r.ctx, *r.viewer, deleteAs); err != nil {
return err
}
return w.writeJSON(comment)
}
// /api/_commentVote [ POST ]
func (s *Server) commentVote(w *responseWriter, r *request) error {
if !r.loggedIn {
return errNotLoggedIn
}
if err := s.rateLimitVoting(r, *r.viewer); err != nil {
return err
}
req := struct {
CommentID uid.ID `json:"commentId"`
Up bool `json:"up"`
}{Up: true}
if err := r.unmarshalJSONBody(&req); err != nil {
return err
}
comment, err := core.GetComment(r.ctx, s.db, req.CommentID, r.viewer)
if err != nil {
return err
}
if comment.ViewerVoted.Bool {
if req.Up == comment.ViewerVotedUp.Bool {
err = comment.DeleteVote(r.ctx, *r.viewer)
} else {
err = comment.ChangeVote(r.ctx, *r.viewer, req.Up)
}
} else {
err = comment.Vote(r.ctx, *r.viewer, req.Up)
}
if err != nil {
return err
}
return w.writeJSON(comment)
}