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+;;; guix-hydra-jobset.el --- Interface for Hydra jobsets  -*- lexical-binding: t -*-
+
+;; Copyright © 2015 Alex Kost <alezost@gmail.com>
+
+;; This file is part of GNU Guix.
+
+;; GNU Guix 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.
+
+;; GNU Guix 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 <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; This file provides an interface for displaying Hydra jobsets in
+;; 'list' and 'info' buffers.
+
+;;; Code:
+
+(require 'cl-lib)
+(require 'guix-buffer)
+(require 'guix-list)
+(require 'guix-info)
+(require 'guix-hydra)
+(require 'guix-hydra-build)
+(require 'guix-utils)
+
+(guix-hydra-define-entry-type hydra-jobset
+  :search-types '((project . guix-hydra-jobset-api-url))
+  :filters '(guix-hydra-jobset-filter-id)
+  :filter-names '((nrscheduled . scheduled)
+                  (nrsucceeded . succeeded)
+                  (nrfailed . failed)
+                  (nrtotal . total)))
+
+(defun guix-hydra-jobset-get-display (search-type &rest args)
+  "Search for Hydra builds and show results."
+  (apply #'guix-list-get-display-entries
+         'hydra-jobset search-type args))
+
+
+;;; Defining URLs
+
+(defun guix-hydra-jobset-url (project jobset)
+  "Return Hydra URL of a PROJECT's JOBSET."
+  (guix-hydra-url "jobset/" project "/" jobset))
+
+(defun guix-hydra-jobset-api-url (project)
+  "Return Hydra API URL for jobsets by PROJECT."
+  (guix-hydra-api-url "jobsets"
+    `(("project" . ,project))))
+
+
+;;; Filters for processing raw entries
+
+(defun guix-hydra-jobset-filter-id (entry)
+  "Add 'ID' parameter to 'hydra-jobset' ENTRY."
+  (cons `(id . ,(guix-entry-value entry 'name))
+        entry))
+
+
+;;; Hydra jobset 'info'
+
+(guix-hydra-info-define-interface hydra-jobset
+  :mode-name "Hydra-Jobset-Info"
+  :buffer-name "*Guix Hydra Jobset Info*"
+  :format '((name ignore (simple guix-info-heading))
+            ignore
+            guix-hydra-jobset-info-insert-url
+            (project   format guix-hydra-jobset-info-insert-project)
+            (scheduled format (format guix-hydra-jobset-info-scheduled))
+            (succeeded format (format guix-hydra-jobset-info-succeeded))
+            (failed    format (format guix-hydra-jobset-info-failed))
+            (total     format (format guix-hydra-jobset-info-total))))
+
+(defface guix-hydra-jobset-info-scheduled
+  '((t))
+  "Face used for the number of scheduled builds."
+  :group 'guix-hydra-jobset-info-faces)
+
+(defface guix-hydra-jobset-info-succeeded
+  '((t :inherit guix-hydra-build-status-succeeded))
+  "Face used for the number of succeeded builds."
+  :group 'guix-hydra-jobset-info-faces)
+
+(defface guix-hydra-jobset-info-failed
+  '((t :inherit guix-hydra-build-status-failed))
+  "Face used for the number of failed builds."
+  :group 'guix-hydra-jobset-info-faces)
+
+(defface guix-hydra-jobset-info-total
+  '((t))
+  "Face used for the total number of builds."
+  :group 'guix-hydra-jobset-info-faces)
+
+(defun guix-hydra-jobset-info-insert-project (project entry)
+  "Insert PROJECT button for the jobset ENTRY."
+  (let ((jobset (guix-entry-value entry 'name)))
+    (guix-insert-button
+     project 'guix-hydra-build-project
+     'action (lambda (btn)
+               (let ((args (guix-hydra-build-latest-prompt-args
+                            :project (button-get btn 'project)
+                            :jobset  (button-get btn 'jobset))))
+                 (apply #'guix-hydra-build-get-display
+                        'latest args)))
+     'project project
+     'jobset jobset)))
+
+(defun guix-hydra-jobset-info-insert-url (entry)
+  "Insert Hydra URL for the jobset ENTRY."
+  (guix-insert-button (guix-hydra-jobset-url
+                       (guix-entry-value entry 'project)
+                       (guix-entry-value entry 'name))
+                      'guix-url))
+
+
+;;; Hydra jobset 'list'
+
+(guix-hydra-list-define-interface hydra-jobset
+  :mode-name "Hydra-Jobset-List"
+  :buffer-name "*Guix Hydra Jobset List*"
+  :format '((name nil 25 t)
+            (project nil 10 t)
+            (scheduled nil 12 t)
+            (succeeded nil 12 t)
+            (failed nil 9 t)
+            (total nil 10 t)))
+
+(let ((map guix-hydra-jobset-list-mode-map))
+  (define-key map (kbd "B") 'guix-hydra-jobset-list-latest-builds))
+
+(defun guix-hydra-jobset-list-latest-builds (number &rest args)
+  "Display latest NUMBER of Hydra builds of the current jobset.
+Interactively, prompt for NUMBER.  With prefix argument, prompt
+for all ARGS."
+  (interactive
+   (let ((entry (guix-list-current-entry)))
+     (guix-hydra-build-latest-prompt-args
+      :project (guix-entry-value entry 'project)
+      :jobset  (guix-entry-value entry 'name))))
+  (apply #'guix-hydra-latest-builds number args))
+
+
+;;; Interactive commands
+
+;;;###autoload
+(defun guix-hydra-jobsets (project)
+  "Display jobsets of PROJECT."
+  (interactive (list (guix-hydra-read-project)))
+  (guix-hydra-jobset-get-display 'project project))
+
+(provide 'guix-hydra-jobset)
+
+;;; guix-hydra-jobset.el ends here