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
|
;;; sx-interaction.el --- voting, commenting, and other interaction
;; Copyright (C) 2014 Artur Malabarba
;; Author: Artur Malabarba <bruce.connor.am@gmail.com>
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This file provides voting, commenting, and other interactive
;; facilities. Most functions are scoped relative to `sx--data-here'
;; when called interactively.
;;; Code:
(require 'sx)
(require 'sx-question)
(require 'sx-question-mode)
(require 'sx-question-list)
;;; Using data in buffer
(defun sx--data-here ()
"Get the text property `sx--data-here'."
(or (get-text-property (point) 'sx--data-here)
(and (derived-mode-p 'sx-question-list-mode)
(tabulated-list-get-id))
(or (derived-mode-p 'sx-question-mode)
sx-question-mode--data)))
(defun sx--maybe-update-display ()
"Refresh the question list if we're inside it."
(cond
((derived-mode-p 'sx-question-list-mode)
(sx-question-list-refresh 'redisplay 'no-update))
((derived-mode-p 'sx-question-mode)
(sx-question-mode-refresh 'no-update))))
(defun sx--copy-data (from to)
"Copy all fields of alist FORM onto TO.
Only fields contained in TO are copied."
(setcar to (car from))
(setcdr to (cdr from)))
(defun sx-visit (data &optional copy-as-kill)
"Visit DATA in a web browser.
DATA can be a question, answer, or comment. Interactively, it is
derived from point position.
If copy-as-kill is non-nil, do not call `browse-url'.
Instead, copy the link as a new kill with `kill-new'.
Interactively, this is specified with a prefix argument.
If DATA is a question, also mark it as read."
(interactive (list (sx--data-here) current-prefix-arg))
(sx-assoc-let data
(let ((link
(when (stringp .link)
(funcall (if copy-as-kill #'kill-new #'browse-url)
.link))))
(when (and (called-interactively-p 'any) copy-as-kill)
(message "Copied: %S" link)))
(when (and .title (not copy-as-kill))
(sx-question--mark-read data)
(sx--maybe-update-display))))
(defun sx-toggle-upvote (data)
"Apply or remove upvote from DATA.
DATA can be a question, answer, or comment. Interactively, it is
guessed from context at point."
(interactive (list (sx--data-here)))
(sx-assoc-let data
(sx-set-vote data "upvote" (null (eq .upvoted t)))))
(defun sx-toggle-downvote (data)
"Apply or remove downvote from DATA.
DATA can be a question or an answer. Interactively, it is guessed
from context at point."
(interactive (list (sx--data-here)))
(sx-assoc-let data
(sx-set-vote data "downvote" (null (eq .downvoted t)))))
(defun sx-set-vote (data type status)
"Set the DATA's vote TYPE to STATUS.
DATA can be a question, answer, or comment. TYPE can be
\"upvote\" or \"downvote\". STATUS is a boolean.
Besides posting to the api, DATA is also altered to reflect the
changes."
(let ((result
(sx-assoc-let data
(sx-method-call
(cond
(.comment_id "comments")
(.answer_id "answers")
(.question_id "questions"))
:id (or .comment_id .answer_id .question_id)
:submethod (concat type (unless status "/undo"))
:auth 'warn
:url-method "POST"
:filter sx-browse-filter
:site .site))))
;; The api returns the new DATA.
(when (> (length result) 0)
(sx--copy-data (elt result 0) data)
;; Display the changes in `data'.
(sx--maybe-update-display))))
;;; Commenting
(defun sx-comment (data text)
"Post a comment on DATA given by TEXT.
DATA can be a question, an answer, or a comment. Interactively,
it is guessed from context at point.
If DATA is a comment, the comment is posted as a reply to it.
TEXT is a string. Interactively, it is read from the minibufer."
(interactive
(list (sx--data-here) 'query))
(sx-assoc-let data
;; Get the comment text
(when (eq text 'query)
(setq text (read-string
"Comment text: "
(when .comment_id
(concat (sx--user-@name .owner) " "))))
(while (< (string-width text) 15)
(setq text (read-string "Comment text (at least 15 characters): " text))))
;; If non-interactive, `text' could be anything.
(unless (stringp text)
(error "Comment body must be a string"))
;; And post
(let ((result
(sx-method-call 'posts
:id (or .post_id .answer_id .question_id)
:submethod "comments/add"
:auth 'warn
:url-method "POST"
:filter sx-browse-filter
:site .site
:keywords `((body ,text)))))
;; The api returns the new DATA.
(when (> (length result) 0)
(sx--add-comment-to-object
(elt result 0)
(if .post_id
(sx--get-post .post_type .site .post_id)
data))
;; Display the changes in `data'.
(sx--maybe-update-display)))))
(defun sx--get-post (type site id)
"Find in the database a post identified by TYPE, SITE and ID.
TYPE is `question' or `answer'.
SITE is a string.
ID is an integer."
(let ((db (cons sx-question-mode--data
sx-question-list--dataset)))
(setq db
(cond
((string= type "question") db)
((string= type "answer")
(apply #'cl-map 'list #'identity
(mapcar (lambda (x) (cdr (assoc 'answers x))) db)))))
(car (cl-member-if
(lambda (x) (sx-assoc-let x
(and (equal (or .answer_id .question_id) id)
(equal .site site))))
db))))
(defun sx--add-comment-to-object (comment object)
"Add COMMENT to OBJECT's `comments' property.
OBJECT can be a question or an answer."
(let ((com-cell (assoc 'comments object)))
(if com-cell
(progn
(setcdr
com-cell
(apply #'vector
(append
(cl-map 'list #'identity
(cdr com-cell))
(list comment)))))
;; No previous comments, add it manually.
(setcdr object (cons (car object) (cdr object)))
(setcar object `(comments . [,comment])))))
(provide 'sx-interaction)
;;; sx-interaction.el ends here
;; Local Variables:
;; lexical-binding: t
;; End:
|
