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magithub-comment.el
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magithub-comment.el
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;;; magithub-comment.el --- tools for comments -*- lexical-binding: t; -*-
;; Copyright (C) 2017-2018 Sean Allred
;; Author: Sean Allred <code@seanallred.com>
;; Keywords: lisp
;; 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:
;; Tools for working with issue comments.
;;; Code:
(require 'magit)
(require 'markdown-mode)
(require 'thingatpt)
(require 'magithub-core)
(require 'magithub-repo)
(require 'magithub-issue)
(require 'magithub-edit-mode)
(declare-function magithub-issue-view "magithub-issue-view.el" (issue))
(defvar magit-magithub-comment-section-map
(let ((m (make-sparse-keymap)))
(set-keymap-parent m magithub-map)
(define-key m [remap magithub-browse-thing] #'magithub-comment-browse)
(define-key m [remap magit-delete-thing] #'magithub-comment-delete)
(define-key m (kbd "SPC") #'magithub-comment-view)
(define-key m [remap magithub-reply-thing] #'magithub-comment-reply)
(define-key m [remap magithub-edit-thing] #'magithub-comment-edit)
m))
(defun magithub-comment-browse (comment)
(interactive (list (thing-at-point 'github-comment)))
(unless comment
(user-error "No comment found"))
(let-alist comment
(browse-url .html_url)))
(declare-function face-remap-remove-relative "face-remap.el" (cookie))
(defun magithub-comment-delete (comment)
(interactive (list (thing-at-point 'github-comment)))
(unless comment
(user-error "No comment found"))
(let ((repo (magithub-comment-source-repo comment))
(author (let-alist comment .user.login))
(me (let-alist (magithub-user-me) .login)))
(unless (or (string= author me)
(magithub-repo-admin-p repo))
(user-error "You don't have permission to delete this comment"))
(let ((cookie (face-remap-add-relative 'magit-section-highlight
;;'magit-diff-removed-highlight
;;:strike-through t
;;:background "red4"
;;
'magithub-deleted-thing
)))
(unwind-protect (magithub-confirm 'comment-delete)
(face-remap-remove-relative cookie)))
(magithub-request
(ghubp-delete-repos-owner-repo-issues-comments-id repo comment))
(magithub-cache-without-cache :issues
(magit-refresh-buffer))
(message "Comment deleted")))
(defun magithub-comment-source-issue (comment)
(magithub-cache :comment
`(magithub-request
(ghubp-follow-get ,(alist-get 'issue_url comment)))))
(defun magithub-comment-source-repo (comment)
(magithub-issue-repo (magithub-comment-source-issue comment)))
(defun magithub-comment-insert (comment)
"Insert a single issue COMMENT."
(let-alist comment
(magit-insert-section (magithub-comment comment)
(magit-insert-heading (propertize .user.login 'face 'magithub-user))
(save-excursion
(let ((created-at (magithub--format-time .created_at)))
(backward-char 1)
(insert (make-string (- (current-fill-column)
(current-column)
(length created-at))
? ))
(insert (propertize created-at 'face 'magit-dimmed))))
(insert (magithub-fill-gfm (magithub-wash-gfm (s-trim .body)))
"\n\n"))))
(defvar magithub-gfm-view-mode-map
(let ((m (make-sparse-keymap)))
(define-key m [remap kill-this-buffer] #'magithub-comment-view-close)
m)
"Keymap for `magithub-gfm-view-mode'.")
(declare-function gfm-view-mode "ext:markdown-mode.el")
(define-derived-mode magithub-gfm-view-mode gfm-view-mode "M:GFM-View"
"Major mode for viewing GitHub markdown content.")
(defvar-local magithub-comment-view--parent-buffer nil
"The 'parent' buffer of the current comment-view.
This variable is used to jump back to the issue that contained
the comment; see `magithub-comment-view' and
`magithub-comment-view-close'.")
(defun magithub-comment-view (comment)
"View COMMENT in a new buffer."
(interactive (list (thing-at-point 'github-comment)))
(let ((prev (current-buffer)))
(with-current-buffer (get-buffer-create "*comment*")
(magithub-gfm-view-mode)
(setq-local magithub-comment-view--parent-buffer prev)
(let ((inhibit-read-only t))
(erase-buffer)
(insert (magithub-wash-gfm (alist-get 'body comment))))
(goto-char 0)
(magit-display-buffer (current-buffer)))))
(defun magithub-comment-view-close ()
"Close the current buffer."
(interactive)
(let ((oldbuf magithub-comment-view--parent-buffer))
(kill-this-buffer)
(magit-display-buffer oldbuf)))
;;;###autoload
(defun magithub-comment-new (issue &optional discard-draft initial-content)
"Comment on ISSUE in a new buffer.
If prefix argument DISCARD-DRAFT is specified, the draft will not
be considered.
If INITIAL-CONTENT is specified, it will be inserted as the
initial contents of the reply if there is no draft."
(interactive (let ((issue (magithub-interactive-issue)))
(prog1 (list issue current-prefix-arg)
(unless (derived-mode-p 'magithub-issue-view-mode)
(magithub-issue-view issue)))))
(let* ((issueref (magithub-issue-reference issue))
(repo (magithub-issue-repo issue)))
(with-current-buffer
(magithub-edit-new (concat "reply to " issueref)
:header (concat "replying to " issueref)
:submit #'magithub-issue-comment-submit
:content initial-content
:prompt-discard-draft discard-draft
:file (magithub-comment--draft-file issue repo))
(setq-local magithub-issue issue)
(setq-local magithub-repo repo)
(magit-display-buffer (current-buffer)))))
(defun magithub-comment--draft-file (issue repo)
"Get an appropriate draft file for ISSUE in REPO."
(let-alist issue
(expand-file-name (format "%s-comment" .number)
(magithub-repo-data-dir repo))))
(defun magithub-comment--submit-edit (comment repo new-body)
(interactive (list (thing-at-point 'github-comment)
(thing-at-point 'github-repository)
(buffer-string)))
(when (string= new-body "")
(user-error "Can't post an empty comment; try deleting it instead"))
(magithub-confirm 'comment-edit)
(magithub-request
(ghubp-patch-repos-owner-repo-issues-comments-id
repo comment
`((body . ,new-body)))))
(defun magithub-comment-edit (comment issue repo)
"Edit COMMENT."
(interactive (list (thing-at-point 'github-comment)
(or (thing-at-point 'github-issue)
(thing-at-point 'github-pull-request))
(thing-at-point 'github-repository)))
(let ((updated (magithub-request (ghubp-follow-get (alist-get 'url comment)))))
(with-current-buffer
(magithub-edit-new (format "*%s: editing comment by %s (%s)*"
(magithub-issue-reference issue)
(let-alist comment .user.login)
(alist-get 'id comment))
:submit #'magithub-comment--submit-edit
:content (alist-get 'body updated)
:file (magithub-comment--draft-file issue repo))
(setq-local magithub-issue issue)
(setq-local magithub-repo repo)
(setq-local magithub-comment updated)
(magit-display-buffer (current-buffer)))
(unless (string= (alist-get 'body comment)
(alist-get 'body updated))
(message "Comment has changed since information was cached; \
updated content pulled in for edit"))))
(defun magithub-comment-reply (comment &optional discard-draft issue)
"Reply to COMMENT on ISSUE.
If prefix argument DISCARD-DRAFT is provided, the current draft
will deleted.
If ISSUE is not provided, it will be determined from context or
from COMMENT."
(interactive (list (thing-at-point 'github-comment)
current-prefix-arg
(thing-at-point 'github-issue)))
(let-alist comment
(magithub-comment-new
(or issue (magithub-request (ghubp-follow-get .issue_url)))
discard-draft
(let ((reply-body (if (use-region-p)
(buffer-substring (region-beginning) (region-end))
.body)))
(with-temp-buffer
(insert (string-trim (magithub-wash-gfm reply-body)))
(markdown-blockquote-region (point-min) (point-max))
(goto-char (point-max))
(insert "\n\n")
(buffer-string))))))
(defun magithub-issue-comment-submit (issue comment &optional repo)
"On ISSUE, submit a new COMMENT.
COMMENT is the text of the new comment.
REPO is an optional repo object; it will be deduced from ISSUE if
not provided."
(interactive (list (thing-at-point 'github-issue)
(save-restriction
(widen)
(buffer-substring-no-properties (point-min) (point-max)))
(thing-at-point 'github-repository)))
(unless issue
(user-error "No issue provided"))
(setq repo (or repo
(magithub-issue-repo issue)
(thing-at-point 'github-repository)))
(unless repo
(user-error "No repo detected"))
;; all required args provided
(magithub-confirm 'comment (magithub-issue-reference issue))
(magithub-request
(ghubp-post-repos-owner-repo-issues-number-comments
repo issue `((body . ,comment))))
(magithub-edit-delete-draft)
(message "Success"))
(provide 'magithub-comment)
;;; magithub-comment.el ends here