(use-package "/usr/local/share/emacs/site-lisp/mu/mu4e" 'mu4e
  (setq mu4e-maildir-list (list "/Users/durand/mbsync"))
  (setq user-mail-address "mmemmew@gmail.com")
  (setq mu4e-completing-read-function #'completing-read)
  (setq message-confirm-send t)
  (setq mu4e~update-buffer-height 5)

  (setq mu4e-context-policy 'pick-first)
  (setq mu4e-attachment-dir "~/Downloads")
  (setq mu4e-mu-binary "/usr/local/bin/mu")
  
  (setq mu4e-view-use-gnus t)
  (setq mu4e-confirm-quit nil)
  ;; mbsync works a lot better!
  (setq mu4e-get-mail-command
        "mbsync mymail-inbox mymail-sent gmail-inbox gmail-sent")
  (setq mu4e-change-filenames-when-moving t)
  (setq mu4e-view-show-addresses t)     ; show full addresses!
  (setq mu4e-view-show-images t)
  (setq mu4e-sent-messages-behavior 'delete)
  (setq mu4e-use-fancy-chars t)
  (setq message-send-mail-function 'smtpmail-send-it
        smtpmail-stream-type 'starttls
        smtpmail-default-smtp-server "smtp.gmail.com"
        smtpmail-smtp-server "smtp.gmail.com"
        smtpmail-smtp-service 587)

  (define-key mu4e-main-mode-map (vector ?q) #'bury-buffer)
  (define-key mu4e-main-mode-map (vector ?u) #'mu4e-update-mail-and-index)

  (add-to-list
   'mu4e-bookmarks
   (make-mu4e-bookmark
    :name "week no trash no archive"
    :query "date:7d..now AND NOT maildir:/trash AND NOT maildir:/archive"
    :key ?d))

  (add-to-list
   'mu4e-bookmarks
   (make-mu4e-bookmark
    :name "week starred"
    :query "date:7d..now AND maildir:/suivis"
    :key ?s))

  (setq mu4e-maildir-shortcuts
        '(("/INBOX" . ?i)
          ("/archive" . ?a)
          ("/suivis" . ?s)
          ("/drafts" . ?d)))
  
  (setq mu4e-contexts
        (list
         (make-mu4e-context
          :name "Student"
          :enter-func (lambda () (mu4e-message "Entering Student context"))
          :leave-func (lambda () (mu4e-message "Leaving Student context"))
          ;; we match based on the contact-fields of the message
          :match-func
          (lambda (msg)
            (when msg
              (or
               (mu4e-message-contact-field-matches msg :from "tan\\|mlh\\|hsialc\\|tingyu.lee\\|tingyulee")
               (mu4e-message-contact-field-matches msg :to "tan\\|mlh\\|hsialc\\|tingyu.lee\\|tingyulee"))))
          :vars '((user-mail-address . "mmemmew@gmail.com")
                  (user-full-name . "李俊緯")
                  (mu4e-compose-signature . "生 俊緯")
                  (mu4e-sent-folder . "/gmail/sent")
                  (smtpmail-smtp-user . "mmemmew@gmail.com")
                  (smtpmail-local-domain . "gmail.com")
                  (smtpmail-default-smtp-server . "smtp.gmail.com")
                  (smtpmail-smtp-server . "smtp.gmail.com")
                  (smtpmail-smtp-service . 587)))
         (make-mu4e-context
          :name "NCTS"
          :enter-func (lambda () (mu4e-message "Switch to the NCTS context"))
          :leave-func (lambda () (mu4e-message "Leave NCTS context"))
          ;; no leave-func
          ;; we match based on the maildir of the message
          ;; this matches maildir /Arkham and its sub-directories
          :match-func (lambda (msg)
                        (when msg
                          (or
                           (mu4e-message-contact-field-matches msg :to "chunweilee@ncts.ntu.edu.tw")
                           (mu4e-message-contact-field-matches msg :from "chunweilee@ncts.ntu.edu.tw"))))
          :vars '((user-mail-address . "chunweilee@ncts.ntu.edu.tw")
                  (user-full-name . "李俊緯")
                  (mu4e-compose-signature .
                                          (concat
                                           "Sincerely Yours,\n"
                                           "俊緯"))))
         (make-mu4e-context
          :name "Durand"
          :enter-func (lambda () (mu4e-message "Entering Durand context"))
          :leave-func (lambda () (mu4e-message "Leaving Durand context"))
          ;; we match based on the contact-fields of the message
          :match-func (lambda (msg)
                        (when msg
                          (or
                           (mu4e-message-contact-field-matches msg :to "mmemmew@gmail.com")
                           (mu4e-message-contact-field-matches msg :from "mmemmew@gmail.com"))))
          :vars '((user-mail-address . "durand@jsdurand.xyz")
                  (user-full-name . "Durand")
                  (mu4e-compose-signature . "Sévère Durand")
                  (mu4e-sent-folder . "/gmail/sent")
                  (smtpmail-smtp-user . "mmemmew@gmail.com")
                  (smtpmail-local-domain . "gmail.com")
                  (smtpmail-default-smtp-server . "smtp.gmail.com")
                  (smtpmail-smtp-server . "smtp.gmail.com")
                  (smtpmail-smtp-service . 587))))))

;; (setq smtpmail-debug-info t)
;; (setq smtpmail-debug-verb t)

;;; message mode

(require 'message)

(defun durand-set-fill-column ()
  "Set the fill-column to an appropriate value."
  (setq fill-column 70))

(add-hook 'message-mode-hook #'durand-set-fill-column)

;;; Quote a message

(defvar durand-quote-history nil
  "The history of names whom I have quoted.")

(autoload 'durand-take "common")

(defun durand-quote-message (&optional arg)
  "Quote the current message body, and add some meta-data.
Actually this only saves the quote text in the `kill-ring', and
does not modify the buffer directly.

If region is activated, only quote the text in the region.

If ARG is (list 4), query for the time and the name to quote.

If ARG is non-nil, and not equal to (list 4), omit the line about
the time and the one who says the quote; only query the author
and produce the quoted message."
  (interactive
   (list current-prefix-arg)
   gnus-summary-mode gnus-article-mode message-mode)
  (cond
   ((apply #'provided-mode-derived-p
           major-mode (command-modes #'durand-quote-message)))
   ((user-error
     (concat
      "The command only works in the following modes: "
      (mapconcat
       (lambda (obj) (format "%S" obj))
       (command-modes #'durand-quote-message)
       " ")))))
  (cond
   ((derived-mode-p 'gnus-summary-mode)
    (set-buffer gnus-article-buffer)))
  (let* ((date
          (cond
           ((and (listp arg)
                 (null (cdr arg))
                 (eq (car arg) 4))
            (read-string "Time of the quote: "))
           (arg nil)
           ((save-match-data
              (save-restriction
                (mail-narrow-to-head)
                (mail-fetch-field "Date"))))))
         (date
          (cond
           (date
            (format-time-string
             "%a, %e %b %Y %H:%M:%S %z"
             (let* ((time (parse-time-string date))
                    (first-six
                     (mapcar
                      (lambda (element) (or element 0))
                      (durand-take 6 time)))
                    (remain (nthcdr 6 time)))
               (encode-time (append first-six remain)))
             (current-time-zone)))))
         (author
          (cond
           (arg
            (read-string
             "Author of the quote: "
             nil 'durand-quote-history
             durand-quote-history t))
           ((save-match-data
              (save-restriction
                (mail-narrow-to-head)
                (mail-fetch-field "From"))))))
         (author-name
          (save-match-data
            (cond
             ((string-match
               (rx "\"" (group (1+ anychar)) "\" <")
               author)
              (car (split-string (match-string 1 author))))
             ((string-match
               (rx (group (1+ (not (any space "<")))) " <")
               author)
              (match-string 1 author))
             ((string-match
               (rx "<" (group (1+ (not (any "<>")))) ">")
               author)
              (match-string 1 author))
             (author))))
         (body
          (cond
           ((use-region-p)
            (buffer-substring-no-properties
             (region-beginning) (region-end)))
           ((save-match-data
              (save-restriction
                (widen)
                (article-goto-body)
                (buffer-substring-no-properties
                 (point) (point-max))))))))
    (kill-new
     (concat
      (cond
       (date
        (format
         ">>>>> Le %s, %s a dit:\n\n" date author)))
      (mapconcat
       (lambda (line)
         (cond
          ;; paranoia
          ((not (stringp line)) (format "%S" line))
          ((string-match-p
            (rx bos
                (zero-or-more space)
                (or
                 (seq
                  (1+ (not (any ">")))
                  "> ")
                 (1+ (literal ">"))
                 eos))
            line)
           line)
          ((concat "    " author-name "> " line))))
       (split-string body (string #xa))
       (string #xa))))
    (message "Quoted the mail.  To use it just yank it.")))

(define-key message-mode-map (vector 3 ?q) #'durand-quote-message)
(define-key gnus-summary-mode-map (vector 3 ?q) #'durand-quote-message)
(define-key gnus-article-mode-map (vector 3 ?q) #'durand-quote-message)