;;; Guix Data Service -- Information about Guix over time
;;; Copyright © 2017, 2018 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
;;;
;;; This program is free software: you can redistribute it and/or
;;; modify it under the terms of the GNU Affero 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
;;; Affero General Public License for more details.
;;;
;;; You should have received a copy of the GNU Affero General Public
;;; License along with this program.  If not, see
;;; <http://www.gnu.org/licenses/>.

(define-module (guix-data-service config)
  #:use-module (guix store)
  #:export (%config

            assets-dir-in-store?))

(define %config
  (let ((config
         ;; Try to find the "assets" directory relative to the executable
         ;; first.  This is useful when using "pre-inst-env".
         `((assets-dir  . ,(let ((install-dir
                                  "@prefix@/share/guix-data-service/assets")
                                 (dev-dir
                                  (string-append (getcwd) "/assets")))
                             (if (file-exists? install-dir)
                                 install-dir
                                 dev-dir)))
           (doc-dir     . ,(let ((install-dir
                                  "@prefix@/share/doc/guix-data-service")
                                 (dev-dir
                                  (getcwd)))
                             (if (file-exists? install-dir)
                                 install-dir
                                 dev-dir)))
           (dumps-dir   . ,(let ((install-dir
                                  "/var/lib/guix-data-service/dumps")
                                 (dev-dir
                                  (string-append (getcwd) "/dumps")))
                             (if (file-exists? install-dir)
                                 install-dir
                                 dev-dir)))
           (host        . "localhost")
           (port        . 8765)

           (guix        . "@guix@")

           (sqitch      . "@sqitch@")
           (sqitch-psql . "@psql@")
           (sqitch-plan . ,(let ((installed-plan
                                  "@prefix@/share/guix-data-service/sqitch/sqitch.plan")
                                 (dev-plan
                                  "@abs_top_builddir@/sqitch/sqitch.plan"))
                             (if (file-exists? installed-plan)
                                 installed-plan
                                 dev-plan)))

           (database-user . "guix_data_service")
           (database-host . "localhost")
           (database-name . "guix_data_service"))))
    (lambda (key)
      (assoc-ref config key))))

(define assets-dir-in-store?
  (string-prefix? (%store-prefix)
                  (%config 'assets-dir)))