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;;; emacsconf-mail.el --- Mail merge functions -*- lexical-binding: t; -*-
;; Copyright (C) 2022 Sacha Chua
;; Author: Sacha Chua <sacha@sachachua.com>
;; Keywords: mail
;; 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 <https://www.gnu.org/licenses/>.
;;; Commentary:
;;
;;; Code:
(defun emacsconf-mail-complete-email-group (&optional info)
"Return (email . (talk talk))."
(setq info (emacsconf-filter-talks (or info (emacsconf-get-talk-info))))
(save-window-excursion
(let* ((grouped (seq-group-by (lambda (o) (plist-get o :email)) info))
(slug (emacsconf-get-slug-from-string (emacsconf-complete-talk)))
(email (plist-get (seq-find (lambda (o) (string= (plist-get o :slug) slug)) info) :email)))
(assoc email grouped))))
(defun emacsconf-mail-prepare (template email attrs)
(compose-mail
email
(emacsconf-replace-plist-in-string attrs (plist-get template :subject))
`(("Reply-To" . ,(emacsconf-replace-plist-in-string attrs (plist-get template :reply-to)))
("Mail-Followup-To" . ,(emacsconf-replace-plist-in-string attrs (plist-get template :mail-followup-to)))
("Cc" . ,(plist-get template :cc))))
(message-sort-headers)
(message-goto-body)
(save-excursion (insert (emacsconf-replace-plist-in-string attrs (plist-get template :body)))
(goto-char (point-min))
(emacsconf-mail-merge-wrap)))
(defun emacsconf-mail-template-to-me ()
"Might be useful for testing."
(interactive)
(let* ((template (if (org-entry-get (point) "EMAIL_ID")
(emacsconf-mail-merge-get-template-from-subtree)
(emacsconf-mail-merge-get-template
(completing-read "Template: " (org-property-values "EMAIL_ID")))))
(mail-func (plist-get template :function)))
(funcall mail-func user-mail-address template)))
(defun emacsconf-mail-template-to-group ()
"Prompt for a speaker and e-mail current template to them."
(interactive)
(let* ((template (if (org-entry-get (point) "EMAIL_ID")
(emacsconf-mail-merge-get-template-from-subtree)
(emacsconf-mail-merge-get-template
(completing-read "Template: " (org-property-values "EMAIL_ID")))))
(mail-func (plist-get template :function)))
(funcall mail-func (emacsconf-mail-complete-email-group) template)))
(defun emacsconf-mail-template-to-all ()
"Uses the current template to draft messages to all the speakers."
(interactive)
(let* ((template (if (org-entry-get (point) "EMAIL_ID")
(emacsconf-mail-merge-get-template-from-subtree)
(emacsconf-mail-merge-get-template
(completing-read "Template: " (org-property-values "EMAIL_ID")))))
(info (seq-filter (lambda (o)
(if (plist-get template :slugs)
(member (plist-get o :slug)
(split-string (plist-get template :slugs) " "))
t))
(emacsconf-filter-talks (emacsconf-get-talk-info))))
(grouped (emacsconf-mail-group-by-email info))
(mail-func (plist-get template :function)))
(mapc (lambda (group)
(funcall mail-func group template))
grouped)))
(defun emacsconf-mail-group-by-email (info)
(seq-group-by (lambda (o) (plist-get o :email)) info))
(defun emacsconf-mail-speaker (&optional subject body talk)
"Compose a message to the speaker of the current talk."
(interactive)
(compose-mail (format "%s <%s>" (org-entry-get (point) "NAME") (org-entry-get (point) "EMAIL")) subject)
(when body (message-goto-body) (insert body)))
(defun emacsconf-mail-speaker-schedule (&optional subject body)
(interactive (list (read-string "Subject: ") nil))
(let ((info (emacsconf-get-talk-info-for-subtree)))
(emacsconf-mail-speaker subject body)
(when body (message-goto-body) (insert body))
(goto-char (point-max))
(insert (string-join (emacsconf-timezone-strings info) "\n"))))
(defvar emacsconf-submit-email "emacsconf-submit@gnu.org" "E-mail address for submissions.")
(defun emacsconf-mail-speaker-cc-submit (&optional subject body)
"Compose a message to the speaker of the current talk."
(interactive)
(compose-mail (format "%s <%s>" (org-entry-get (point) "NAME") (org-entry-get (point) "EMAIL"))
subject '(("Reply-To" . emacsconf-submit-email) ("Cc" . emacsconf-submit-email)))
(message-goto-body)
(when body (insert body))
(save-excursion (insert "Please keep " emacsconf-submit-email " in the To: or Cc: when replying. Thank you!")))
(defun emacsconf-mail-show-talk-info ()
(interactive)
(let ((email (or (mail-fetch-field "reply-to") (mail-fetch-field "from"))))
(when (string-match "<\\(\\(\\sw\\|\\s_\\|\\s.\\)+@\\(\\sw\\|\\s_\\|\\s.\\)+\\)>" email)
(setq email (match-string 1 email)))
(pop-to-buffer (find-file-noselect emacsconf-org-file))
(goto-char (point-min))
(goto-char
(or (org-find-property "EMAIL" email)
(org-find-property "NAME"
(completing-read "Name: " (delq nil (org-map-entries (lambda () (org-entry-get "NAME"))))))))))
(defun emacsconf-mail-merge-wrap ()
(interactive)
(with-undo-amalgamate
(save-excursion
(while (re-search-forward " *${wrap}" nil t)
(replace-match "")
(fill-paragraph)))))
(defun emacsconf-mail-merge-get-template-from-subtree ()
(list :subject (org-entry-get-with-inheritance "SUBJECT")
:cc (org-entry-get-with-inheritance "CC")
:slugs (org-entry-get-with-inheritance "SLUGS")
:reply-to (or (org-entry-get-with-inheritance "REPLY_TO") (org-entry-get-with-inheritance "REPLY-TO"))
:mail-followup-to (or (org-entry-get-with-inheritance "MAIL_FOLLOWUP_TO")
(org-entry-get-with-inheritance "MAIL-FOLLOWUP-TO"))
:body (replace-regexp-in-string "\n *," "\n" (buffer-substring-no-properties
(progn (org-end-of-meta-data) (point))
(org-end-of-subtree)))
:function (when (org-entry-get-with-inheritance "FUNCTION")
(intern (org-entry-get-with-inheritance "FUNCTION")))))
(defun emacsconf-mail-merge-get-template (id)
"Return the information for the e-mail template with EMAIL_ID set to ID."
(save-excursion
(goto-char (org-find-property "EMAIL_ID" id))
(emacsconf-mail-merge-get-template-from-subtree)))
(defun emacsconf-mail-merge-fill (string)
"Fill in the values for STRING using the properties at point.
Include some other things, too, such as emacsconf-year, title, name, email, url, and duration."
(let (start (values `(("year" . ,emacsconf-year)
("title" . ,(org-entry-get (point) "ITEM"))
("name" . ,(org-entry-get (point) "NAME"))
("email" . ,(org-entry-get (point) "EMAIL"))
("url" . ,(format "%s%s/talks/%s" emacsconf-base-url emacsconf-year (org-entry-get (point) "SLUG")))
("duration" . ,(org-entry-get (point) "TIME")))))
(while (string-match "\\${\\([-a-zA-Z_]+?\\)}" string start)
(if (assoc-default (match-string 1 string) values)
(setq string (replace-match (assoc-default (match-string 1 string) values) t t string))
(setq string (replace-match (save-match-data (org-entry-get (point) (match-string 1 string))) t t string)))
(setq start (1+ (match-beginning 0))))
string))
(defun emacsconf-mail-merge-format-email-address-for-subtree ()
(if (string-match "," (org-entry-get (point) "EMAIL"))
(org-entry-get (point) "EMAIL")
(format "%s <%s>" (org-entry-get (point) "NAME") (org-entry-get (point) "EMAIL"))))
(defun emacsconf-mail-merge-for-subtree (id note-field)
(let* ((template (emacsconf-mail-merge-get-template id))
(body (emacsconf-mail-merge-fill (plist-get template :body)))
(subject (emacsconf-mail-merge-fill (plist-get template :subject)))
(note (org-entry-get (point) note-field)))
(compose-mail (emacsconf-mail-merge-format-email-address-for-subtree)
subject
`(("Reply-To" . ,(plist-get template :reply-to))
("Mail-Followup-To" . ,(plist-get template :mail-followup-to))
("Cc" . ,(plist-get template :cc))))
(message-goto-body)
(save-excursion
(when note (insert "#+NOTE: " note "\n======== Delete above before sending =============\n\n"))
(insert body))))
(defun emacsconf-mail-merge-cancel ()
(interactive)
(mapc (lambda (buffer)
(when (string-match "unsent" (buffer-name buffer))
(let ((kill-buffer-query-functions nil))
(set-buffer-modified-p nil)
(kill-buffer buffer))))
(buffer-list)))
(provide 'emacsconf-mail)
;;; emacsconf-mail.el ends here
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