Refactor the repository pages code

Move it out of the main controller and html modules to better separate the
code, which should allow to make it easier to read in the future.

1 files changed, 210 insertions, 0 deletions

diff --git a/guix-data-service/web/repository/controller.scm b/guix-data-service/web/repository/controller.scm
new file mode 100644
index 0000000..7ed147c
--- /dev/null
+++ b/guix-data-service/web/repository/controller.scm
@@ -0,0 +1,210 @@
+;;; Guix Data Service -- Information about Guix over time
+;;; 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 web repository controller)
+  #:use-module (ice-9 match)
+  #:use-module (guix-data-service web render)
+  #:use-module (guix-data-service web query-parameters)
+  #:use-module (guix-data-service web util)
+  #:use-module (guix-data-service model package)
+  #:use-module (guix-data-service model git-branch)
+  #:use-module (guix-data-service model git-repository)
+  #:use-module (guix-data-service web repository html)
+  #:export (repository-controller))
+
+(define (repository-controller request
+                               method-and-path-components
+                               mime-types
+                               body
+                               conn)
+
+  (match method-and-path-components
+    (('GET "repository" id)
+     (match (select-git-repository conn id)
+       ((label url cgit-url-base)
+        (render-html
+         #:sxml
+         (view-git-repository
+          (string->number id)
+          label url cgit-url-base
+          (all-branches-with-most-recent-commit conn
+                                                (string->number id)))))
+       (#f
+        (render-html
+         #:sxml (general-not-found
+                 "Repository not found"
+                 "")
+         #:code 404))))
+    (('GET "repository" repository-id "branch" branch-name)
+     (let ((parsed-query-parameters
+            (parse-query-parameters
+             request
+             `((after_date     ,parse-datetime)
+               (before_date    ,parse-datetime)
+               (limit_results  ,parse-result-limit #:default 100)))))
+       (render-html
+        #:sxml (if (any-invalid-query-parameters? parsed-query-parameters)
+                   (view-branch repository-id
+                                branch-name parsed-query-parameters '())
+                   (view-branch
+                    repository-id
+                    branch-name
+                    parsed-query-parameters
+                    (most-recent-commits-for-branch
+                     conn
+                     (string->number repository-id)
+                     branch-name
+                     #:limit (assq-ref parsed-query-parameters 'limit_results)
+                     #:after-date (assq-ref parsed-query-parameters
+                                            'after_date)
+                     #:before-date (assq-ref parsed-query-parameters
+                                             'before_date)))))))
+    (('GET "repository" repository-id "branch" branch-name "package" package-name)
+     (let ((package-versions
+            (package-versions-for-branch conn
+                                         (string->number repository-id)
+                                         branch-name
+                                         package-name)))
+       (case (most-appropriate-mime-type
+              '(application/json text/html)
+              mime-types)
+         ((application/json)
+          (render-json
+           `((versions . ,(list->vector
+                           (map (match-lambda
+                                  ((package-version first-guix-revision-commit
+                                                    first-datetime
+                                                    last-guix-revision-commit
+                                                    last-datetime)
+                                   `((version . ,package-version)
+                                     (first_revision
+                                      . ((commit . ,first-guix-revision-commit)
+                                         (datetime . ,first-datetime)))
+                                     (last_revision
+                                      . ((commit . ,last-guix-revision-commit)
+                                         (datetime . ,last-datetime))))))
+                                package-versions))))))
+         (else
+          (render-html
+           #:sxml (view-branch-package
+                   repository-id
+                   branch-name
+                   package-name
+                   package-versions))))))
+    (('GET "repository" repository-id "branch" branch-name "latest-processed-revision")
+     (let ((commit-hash
+            (latest-processed-commit-for-branch conn repository-id branch-name)))
+       (if commit-hash
+           (render-view-revision mime-types
+                                 conn
+                                 commit-hash
+                                 #:path-base path
+                                 #:header-text
+                                 `("Latest processed revision for branch "
+                                   (samp ,branch-name)))
+           (render-unknown-revision mime-types
+                                    conn
+                                    commit-hash))))
+    (('GET "repository" repository-id "branch" branch-name "latest-processed-revision" "packages")
+     (let ((commit-hash
+            (latest-processed-commit-for-branch conn repository-id branch-name)))
+       (if commit-hash
+           (let ((parsed-query-parameters
+                  (guard-against-mutually-exclusive-query-parameters
+                   (parse-query-parameters
+                    request
+                    `((after_name     ,identity)
+                      (field          ,identity #:multi-value
+                                      #:default ("version" "synopsis"))
+                      (search_query   ,identity)
+                      (limit_results  ,parse-result-limit
+                                      #:no-default-when (all_results)
+                                      #:default 100)
+                      (all_results    ,parse-checkbox-value)))
+                   ;; You can't specify a search query, but then also limit the
+                   ;; results by filtering for after a particular package name
+                   '((after_name search_query)
+                     (limit_results all_results)))))
+
+             (render-revision-packages mime-types
+                                       conn
+                                       commit-hash
+                                       parsed-query-parameters
+                                       #:path-base path
+                                       #:header-text
+                                       `("Latest processed revision for branch "
+                                         (samp ,branch-name))
+                                       #:header-link
+                                       (string-append
+                                        "/repository/" repository-id
+                                        "/branch/" branch-name
+                                        "/latest-processed-revision")))
+           (render-unknown-revision mime-types
+                                    conn
+                                    commit-hash))))
+    (('GET "repository" repository-id "branch" branch-name "latest-processed-revision"
+           "lint-warnings")
+     (let ((commit-hash
+            (latest-processed-commit-for-branch conn repository-id branch-name)))
+       (if commit-hash
+           (let ((parsed-query-parameters
+                  (parse-query-parameters
+                   request
+                   `((package_query  ,identity)
+                     (linter         ,identity #:multi-value)
+                     (message_query  ,identity)
+                     (field          ,identity #:multi-value
+                                     #:default ("linter"
+                                                "message"
+                                                "location"))))))
+
+             (render-revision-lint-warnings mime-types
+                                            conn
+                                            commit-hash
+                                            parsed-query-parameters
+                                            #:path-base path
+                                            #:header-text
+                                            `("Latest processed revision for branch "
+                                              (samp ,branch-name))
+                                            #:header-link
+                                            (string-append
+                                             "/repository/" repository-id
+                                             "/branch/" branch-name
+                                             "/latest-processed-revision")))
+           (render-unknown-revision mime-types
+                                    conn
+                                    commit-hash))))
+    (('GET "repository" repository-id "branch" branch-name "latest-processed-revision" "package" name version)
+     (let ((commit-hash
+            (latest-processed-commit-for-branch conn repository-id branch-name)))
+       (if commit-hash
+           (render-revision-package-version mime-types
+                                            conn
+                                            commit-hash
+                                            name
+                                            version
+                                            #:header-text
+                                            `("Latest processed revision for branch "
+                                              (samp ,branch-name))
+                                            #:header-link
+                                            (string-append
+                                             "/repository/" repository-id
+                                             "/branch/" branch-name
+                                             "/latest-processed-revision"))
+           (render-unknown-revision mime-types
+                                    conn
+                                    commit-hash))))))