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;;; 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 model channel-news)
#:use-module (srfi srfi-1)
#:use-module (ice-9 vlist)
#:use-module (ice-9 match)
#:use-module (json)
#:use-module (squee)
#:use-module (guix channels)
#:use-module (guix-data-service database)
#:use-module (guix-data-service model utils)
#:export (select-channel-news-entries-contained-in-guix-revision
insert-channel-news-entries-for-guix-revision))
(define (select-channel-news-entries-contained-in-guix-revision conn commit)
(define query
"
SELECT channel_news_entries.commit,
channel_news_entries.tag,
(
SELECT JSON_AGG(ARRAY[lang,text])
FROM channel_news_entry_text
INNER JOIN channel_news_entry_titles
ON channel_news_entry_text.id = channel_news_entry_titles.channel_news_entry_text_id
WHERE channel_news_entry_titles.channel_news_entry_id = channel_news_entries.id
) AS title_text,
(
SELECT JSON_AGG(ARRAY[lang,text])
FROM channel_news_entry_text
INNER JOIN channel_news_entry_bodies
ON channel_news_entry_text.id = channel_news_entry_bodies.channel_news_entry_text_id
WHERE channel_news_entry_bodies.channel_news_entry_id = channel_news_entries.id
) AS body_text
FROM channel_news_entries
INNER JOIN guix_revision_channel_news_entries ON
channel_news_entries.id = guix_revision_channel_news_entries.channel_news_entry_id
INNER JOIN guix_revisions
ON guix_revision_channel_news_entries.guix_revision_id = guix_revisions.id
WHERE guix_revisions.commit = $1
ORDER BY guix_revision_channel_news_entries.index ASC")
(map (match-lambda
((commit tag title_text body_text)
(list commit
tag
(map (match-lambda
(#(lang text)
(cons lang text)))
(vector->list
(json-string->scm title_text)))
(map (match-lambda
(#(lang text)
(cons lang text)))
(vector->list
(json-string->scm body_text))))))
(exec-query-with-null-handling conn query (list commit))))
(define (insert-channel-news-entry-text conn text)
(insert-missing-data-and-return-all-ids
conn
"channel_news_entry_text"
'(lang text)
(map (match-lambda
((lang . text)
(list lang text)))
text)))
(define (insert-channel-news-entry conn commit tag)
(match (exec-query
conn
(string-append
"INSERT INTO channel_news_entries (commit, tag) VALUES ("
(value->quoted-string-or-null commit)
","
(value->quoted-string-or-null tag)
") RETURNING id"))
(((id))
(string->number id))))
(define (insert-channel-news-entries conn channel-news-entries)
(define select-channel-news-entries
"
SELECT channel_news_entries.id,
channel_news_entries.commit,
channel_news_entries.tag,
(
SELECT ARRAY_AGG(
channel_news_entry_titles.channel_news_entry_text_id
ORDER BY channel_news_entry_titles.channel_news_entry_text_id
)
FROM channel_news_entry_titles
WHERE channel_news_entry_id = channel_news_entries.id
) AS title_text,
(
SELECT ARRAY_AGG(
channel_news_entry_bodies.channel_news_entry_text_id
ORDER BY channel_news_entry_bodies.channel_news_entry_text_id
)
FROM channel_news_entry_bodies
WHERE channel_news_entry_id = channel_news_entries.id
) AS body_text
FROM channel_news_entries
ORDER BY id")
(define existing
(exec-query->vhash conn
select-channel-news-entries
(match-lambda
((_ commit tag title-ids body-ids)
(list commit
tag
(map string->number
(parse-postgresql-array-string title-ids))
(map string->number
(parse-postgresql-array-string body-ids)))))
(lambda (result)
(string->number (first result)))))
(map
(lambda (entry)
(let ((commit (channel-news-entry-commit entry))
(tag (channel-news-entry-tag entry))
(title-ids
(sort (insert-channel-news-entry-text
conn (channel-news-entry-title entry))
<))
(body-ids
(sort (insert-channel-news-entry-text
conn
(channel-news-entry-body entry))
<)))
(or (and=> (vhash-assoc (list (or commit '())
(or tag '())
title-ids
body-ids)
existing)
(match-lambda
((value . key)
key)))
(let ((channel-news-entry-id
(insert-channel-news-entry conn commit tag)))
(for-each
(lambda (table ids)
(exec-query
conn
(string-append
"INSERT INTO " table
" VALUES "
(string-join
(map (lambda (id)
(simple-format #f "(~A, ~A)"
channel-news-entry-id
id))
ids)
", "))))
'("channel_news_entry_titles"
"channel_news_entry_bodies")
(list title-ids
body-ids))
channel-news-entry-id))))
channel-news-entries))
(define (insert-channel-news-entries-for-guix-revision
conn
guix-revision-id
channel-news-entries)
(unless (null? channel-news-entries)
(let ((channel-news-entry-ids
(insert-channel-news-entries conn channel-news-entries)))
(exec-query
conn
(string-append
"INSERT INTO guix_revision_channel_news_entries "
"(guix_revision_id, channel_news_entry_id, index) VALUES "
(string-join
(map (lambda (id index)
(simple-format #f "(~A,~A,~A)" guix-revision-id id index))
channel-news-entry-ids
(iota (length channel-news-entries)))
", ")))))
#t)
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