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;;; Guix Data Service -- Information about Guix over time
;;; Copyright © 2016, 2017, 2018, 2019 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 web controller)
#:use-module (ice-9 match)
#:use-module (ice-9 pretty-print)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:use-module (web request)
#:use-module (web uri)
#:use-module (squee)
#:use-module (guix-data-service comparison)
#:use-module (guix-data-service model guix-revision)
#:use-module (guix-data-service jobs load-new-guix-revision)
#:use-module (guix-data-service web render)
#:use-module (guix-data-service web util)
#:use-module (guix-data-service web view html)
#:export (controller))
(define-syntax-rule (-> target functions ...)
(fold (lambda (f val) (and=> val f))
target
(list functions ...)))
(define (render-with-error-handling page message)
(apply render-html (page))
;; (catch #t
;; (lambda ()
;; (receive (sxml headers)
;; (pretty-print (page))
;; (render-html sxml headers)))
;; (lambda (key . args)
;; (format #t "ERROR: ~a ~a\n"
;; key args)
;; (render-html (error-page message))))
)
(define (with-base-and-target-commits request conn f)
(let ((base-commit (-> request
request-uri
uri-query
parse-query-string
(cut assoc-ref <> "base_commit")))
(target-commit (-> request
request-uri
uri-query
parse-query-string
(cut assoc-ref <> "target_commit"))))
(f base-commit
(commit->revision-id conn base-commit)
target-commit
(commit->revision-id conn target-commit))))
(define (render-compare-unknown-commit content-type
conn
base-commit
base-revision-id
target-commit
target-revision-id)
(cond
((eq? content-type 'json)
(render-json
'((compare . #t))))
(else
(apply render-html
(compare-unknown-commit base-commit
target-commit
(if base-revision-id #t #f)
(if target-revision-id #t #f)
(select-job-for-commit conn
base-commit)
(select-job-for-commit conn
target-commit))))))
(define (render-compare content-type
conn
base-commit
base-revision-id
target-commit
target-revision-id)
(let-values
(((base-packages-vhash target-packages-vhash)
(package-data->package-data-vhashes
(package-differences-data conn
base-revision-id
target-revision-id))))
(let* ((new-packages
(package-data-vhashes->new-packages base-packages-vhash
target-packages-vhash))
(removed-packages
(package-data-vhashes->removed-packages base-packages-vhash
target-packages-vhash))
(version-changes
(package-data-version-changes base-packages-vhash
target-packages-vhash))
(other-changes
(package-data-other-changes base-packages-vhash
target-packages-vhash)))
(cond
((eq? content-type 'json)
(render-json
`((new-packages . ,new-packages)
(removed-packages . ,removed-packages)
(version-changes . ,version-changes)
(other-changes . ,other-changes))))
(else
(apply render-html
(compare base-commit
target-commit
new-packages
removed-packages
version-changes
other-changes)))))))
(define (render-compare/derivations content-type
conn
base-commit
base-revision-id
target-commit
target-revision-id)
(let-values
(((base-packages-vhash target-packages-vhash)
(package-data->package-data-vhashes
(package-differences-data conn
base-revision-id
target-revision-id))))
(let ((base-derivations
(package-data-vhash->derivations
conn
base-packages-vhash))
(target-derivations
(package-data-vhash->derivations
conn
target-packages-vhash)))
(cond
((eq? content-type 'json)
(render-json
`((base . ((commit . ,base-commit)
(derivations . ,base-derivations)))
(target . ((commit . ,target-commit)
(derivations . ,target-derivations))))))
(else
(apply render-html
(compare/derivations
base-commit
target-commit
base-derivations
target-derivations)))))))
(define (controller request body conn)
(match-lambda
((GET)
(apply render-html (index (most-recent-n-guix-revisions conn 10))))
((GET "compare")
(with-base-and-target-commits
request conn
(lambda (base-commit base-revision-id target-commit target-revision-id)
(if (not (and base-revision-id target-revision-id))
(render-compare-unknown-commit 'html
conn
base-commit
base-revision-id
target-commit
target-revision-id)
(render-compare 'html
conn
base-commit
base-revision-id
target-commit
target-revision-id)))))
((GET "compare.json")
(with-base-and-target-commits
request conn
(lambda (base-commit base-revision-id target-commit target-revision-id)
(if (not (and base-revision-id target-revision-id))
(render-compare-unknown-commit 'json
conn
base-commit
base-revision-id
target-commit
target-revision-id)
(render-compare 'json
conn
base-commit
base-revision-id
target-commit
target-revision-id)))))
((GET "compare" "derivations")
(with-base-and-target-commits
request conn
(lambda (base-commit base-revision-id target-commit target-revision-id)
(if (not (and base-revision-id target-revision-id))
(render-compare-unknown-commit 'html
conn
base-commit
base-revision-id
target-commit
target-revision-id)
(render-compare/derivations 'html
conn
base-commit
base-revision-id
target-commit
target-revision-id)))))
((GET "compare" "derivations.json")
(with-base-and-target-commits
request conn
(lambda (base-commit base-revision-id target-commit target-revision-id)
(if (not (and base-revision-id target-revision-id))
(render-compare-unknown-commit 'json
conn
base-commit
base-revision-id
target-commit
target-revision-id)
(render-compare/derivations 'json
conn
base-commit
base-revision-id
target-commit
target-revision-id)))))
((GET path ...)
(render-static-asset request))))
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