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;;; forgejo-settings.el --- Repository settings for Forgejo -*- lexical-binding: t; -*-
;; Copyright (C) 2026 Thanos Apollo
;; Author: Thanos Apollo <public@thanosapollo.org>
;; Keywords: extensions
;; 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:
;; View and edit repository settings via popup menus.
;; Data flows through closures, no global state.
;; Fetches fresh from API each time settings are opened.
;;; Code:
(require 'keymap-popup)
(require 'forgejo)
(require 'forgejo-api)
(require 'forgejo-utils)
(require 'forgejo-db)
(defvar forgejo-repo--host)
;;; API operations
(defun forgejo-settings--fetch (host-url owner repo callback)
"Fetch repo settings for OWNER/REPO on HOST-URL, call CALLBACK with alist."
(forgejo-api-get
host-url (format "repos/%s/%s" owner repo) nil
(lambda (data _headers)
(when callback (funcall callback data)))))
(defun forgejo-settings--save (host-url owner repo field value callback)
"Save FIELD with VALUE for OWNER/REPO on HOST-URL.
Calls CALLBACK with updated data on success."
(forgejo-api-patch
host-url (format "repos/%s/%s" owner repo)
`((,field . ,value))
(lambda (data _headers)
(message "Updated %s for %s/%s" field owner repo)
(when callback (funcall callback data)))))
;;; Accessors (pure, take data as argument)
(defun forgejo-settings--owner (data)
"Extract owner login from repo DATA."
(alist-get 'login (alist-get 'owner data)))
(defun forgejo-settings--repo (data)
"Extract repo name from repo DATA."
(alist-get 'name data))
;;; Settings popup
(defvar forgejo-settings--map (make-sparse-keymap)
"Keymap for settings popup, rebuilt each time settings are opened.")
(defvar forgejo-settings--labels-map (make-sparse-keymap)
"Keymap for label management popup.")
(declare-function forgejo-vc--repo-from-remote "forgejo-vc.el" ())
(defun forgejo-settings--format-value (value)
"Format VALUE with a distinct face for display."
(propertize (format "%s" (or value ""))
'face 'forgejo-comment-author-face))
;;;###autoload
(defun forgejo-settings ()
"Open repository settings for the current repo context.
Fetches fresh settings from the API, then opens the popup."
(interactive)
(let* ((host-url (or (bound-and-true-p forgejo-repo--host)
(forgejo--resolve-host)))
(owner (or (bound-and-true-p forgejo-repo--owner)
(nth 1 (forgejo-vc--repo-from-remote))
(user-error "No repo context")))
(repo (or (bound-and-true-p forgejo-repo--name)
(nth 2 (forgejo-vc--repo-from-remote))
(user-error "No repo context"))))
(forgejo-settings--fetch
host-url owner repo
(lambda (data)
(forgejo-settings--show host-url data)))))
(defun forgejo-settings--show (host-url data)
"Display settings popup for repo DATA on HOST-URL."
(let* ((owner (forgejo-settings--owner data))
(repo (forgejo-settings--repo data))
(desc (or (alist-get 'description data) ""))
(website (or (alist-get 'website data) ""))
(host (url-host (url-generic-parse-url host-url))))
;; Build labels sub-map (must exist before settings map references it)
(forgejo-settings--build-labels-map host-url owner repo host)
;; Build settings map
(setq forgejo-settings--map (make-sparse-keymap))
(keymap-set forgejo-settings--map "d"
(lambda () (interactive)
(let ((new (read-string "Description: " desc)))
(unless (string= new desc)
(setq desc new)
(forgejo-settings--save
host-url owner repo 'description new nil)))))
(keymap-set forgejo-settings--map "w"
(lambda () (interactive)
(let ((new (read-string "Website: " website)))
(unless (string= new website)
(setq website new)
(forgejo-settings--save
host-url owner repo 'website new nil)))))
(keymap-set forgejo-settings--map "l"
(lambda () (interactive)
(keymap-popup 'forgejo-settings--labels-map)))
(put 'forgejo-settings--map 'keymap-popup--descriptions
(list
(list
(list :name (format "Settings: %s/%s" owner repo)
:entries
(list
(list :key "d"
:description
(lambda ()
(format "Description %s"
(forgejo-settings--format-value
(truncate-string-to-width
desc 40 nil nil "..."))))
:type 'suffix
:stay-open t)
(list :key "w"
:description
(lambda ()
(format "Website %s"
(forgejo-settings--format-value website)))
:type 'suffix
:stay-open t)
(list :key "l"
:description "Labels"
:type 'keymap
:target 'forgejo-settings--labels-map))))))
(keymap-popup 'forgejo-settings--map)))
;;; Labels popup
(defun forgejo-settings--build-labels-map (host-url owner repo host)
"Build the labels sub-map for OWNER/REPO on HOST-URL.
HOST is the hostname for DB lookups."
(setq forgejo-settings--labels-map (make-sparse-keymap))
(keymap-set forgejo-settings--labels-map "a"
(lambda () (interactive)
(forgejo-utils-create-label host-url owner repo host nil)))
(keymap-set forgejo-settings--labels-map "c"
(lambda () (interactive)
(let* ((cached (forgejo-db-get-labels host owner repo))
(names (mapcar (lambda (row) (nth 4 row)) cached))
(name (completing-read "Label: " names nil t))
(id (forgejo-db-get-label-id host owner repo name))
(color (read-color "New color: ")))
(when id
(unless (string-match-p "\\`#?[0-9a-fA-F]+\\'" color)
(let ((rgb (color-values color)))
(unless rgb (user-error "Unknown color: %s" color))
(setq color (format "%02x%02x%02x"
(/ (nth 0 rgb) 256)
(/ (nth 1 rgb) 256)
(/ (nth 2 rgb) 256)))))
(when (string-prefix-p "#" color)
(setq color (substring color 1)))
(forgejo-api-patch
host-url
(format "repos/%s/%s/labels/%d" owner repo id)
`((color . ,color))
(lambda (data _headers)
(forgejo-db-save-labels host owner repo (list data))
(message "Updated color of %s to #%s" name color)))))))
(keymap-set forgejo-settings--labels-map "d"
(lambda () (interactive)
(let* ((cached (forgejo-db-get-labels host owner repo))
(names (mapcar (lambda (row) (nth 4 row)) cached))
(name (completing-read "Delete label: " names nil t))
(id (forgejo-db-get-label-id host owner repo name)))
(when (and id (y-or-n-p (format "Delete label %s? " name)))
(forgejo-api-delete
host-url
(format "repos/%s/%s/labels/%d" owner repo id)
nil
(lambda (_data _headers)
(forgejo-db--execute
"DELETE FROM labels WHERE host = ? AND owner = ? AND repo = ? AND id = ?"
(list host owner repo id))
(forgejo-settings--remove-label-from-issues
host owner repo name)
(message "Deleted label %s from %s/%s"
name owner repo)))))))
(put 'forgejo-settings--labels-map 'keymap-popup--descriptions
(list
(list
(list :name (format "Labels: %s/%s" owner repo)
:entries
(list
(list :key "a" :description "Create label" :type 'suffix)
(list :key "c" :description "Change color" :type 'suffix)
(list :key "d" :description "Delete label" :type 'suffix)))))))
;;; Helpers
(defun forgejo-settings--remove-label-from-issues (host owner repo label-name)
"Remove LABEL-NAME from all cached issues in HOST/OWNER/REPO."
(let ((rows (forgejo-db--select
"SELECT number, labels FROM issues
WHERE host = ? AND owner = ? AND repo = ? AND labels IS NOT NULL"
(list host owner repo))))
(dolist (row rows)
(let* ((number (nth 0 row))
(labels-json (nth 1 row))
(labels (when labels-json (forgejo-db--decode-json labels-json)))
(filtered (cl-remove-if
(lambda (l) (equal (alist-get 'name l) label-name))
labels)))
(unless (= (length labels) (length filtered))
(forgejo-db--execute
"UPDATE issues SET labels = ? WHERE host = ? AND owner = ? AND repo = ? AND number = ?"
(list (forgejo-db--encode-json filtered)
host owner repo number)))))))
(provide 'forgejo-settings)
;;; forgejo-settings.el ends here
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