;;; url-imap.el --- IMAP retrieval routines
;; Author: Simon Josefsson <jas@pdc.kth.se>
;; Created: $Date: 2002/01/22 17:52:16 $
;; Version: $Revision: 1.4 $
;; Keywords: comm, data, processes

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; Anyway, here's a teaser. It's quite broken in lots of regards, but at
; least it seem to work. At least a little. At least when called
; manually like this (I've no idea how it's supposed to be called):

; (url-imap (url-generic-parse-url "imap://cyrus.andrew.cmu.edu/archive.c-client;UID=1021"))

(eval-when-compile (require 'cl))
(require 'url-util)
(require 'url-parse)
(require 'nnimap)
(require 'mm-util)

(defconst url-imap-default-port 143 "Default IMAP port")

(defun url-imap-open-host (host port user pass)
  ;; xxx use user and password
  (if (fboundp 'nnheader-init-server-buffer)
      (nnheader-init-server-buffer))
  (let ((imap-username user)
	(imap-password pass)
	(authenticator (if user 'login 'anonymous)))
    (if (stringp port)
	(setq port (string-to-int port)))
    (nnimap-open-server host
			`((nnimap-server-port ,port)
			  (nnimap-stream 'network)
			  (nnimap-authenticator ,authenticator)))))

(defun url-imap (url)
  (check-type url vector "Need a pre-parsed URL.")
  (save-excursion
    (set-buffer (generate-new-buffer " *url-imap*"))
    (mm-disable-multibyte)
    (let* ((host (url-host url))
	   (port (url-port url))
	   ;; xxx decode mailbox (see rfc2192)
	   (mailbox (url-filename url))
	   (coding-system-for-read 'binary))
      (and (eq (string-to-char mailbox) ?/)
	   (setq mailbox (substring mailbox 1)))
      (url-imap-open-host host port (url-user url) (url-password url))
      (cond ((assoc "TYPE" (url-attributes url))
	     ;; xxx list mailboxes (start gnus?)
	     )
	    ((assoc "UID" (url-attributes url))
	     ;; fetch message part
	     ;; xxx handle partial fetches
	     (insert "Content-type: message/rfc822\n\n")
	     (nnimap-request-article (cdr (assoc "UID" (url-attributes url))) 
				     mailbox host (current-buffer)))
	    (t
	     ;; xxx list messages in mailbox (start gnus?)
	     )))
    (current-buffer)))