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;;; Guix QA Frontpage
;;;
;;; Copyright © 2022 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-qa-frontpage mumi)
  #:use-module (srfi srfi-1)
  #:use-module (ice-9 match)
  #:use-module (kolam http)
  #:use-module ((guix-data-service utils) #:select (chunk-for-each!))
  #:export (mumi-issue-tags
            mumi-issue-open?

            mumi-bulk-issues))

(define (mumi-issue-tags number)
  (with-exception-handler
      (lambda (exn)
        (simple-format
         (current-error-port)
         "exception when fetching issue tags: ~A\n"
         exn)
        #f)
    (lambda ()
      (let ((response
             (graphql-http-get "https://issues.guix.gnu.org/graphql"
                               `(document (query (#(issue #:number ,number) tags))))))
        (vector->list
         (assoc-ref (cdr (first response))
                    "tags"))))
    #:unwind? #t))

(define (mumi-issue-open? number)
  (let ((response
         (graphql-http-get "https://issues.guix.gnu.org/graphql"
                           `(document (query (#(issue #:number ,number) open))))))
    (assoc-ref (cdr (first response))
               "open")))

(define (mumi-bulk-issues numbers)
  (let ((number-to-data
         (make-hash-table)))

    (chunk-for-each!
     (lambda (chunk)
       (let ((response
              (graphql-http-get
               "https://issues.guix.gnu.org/graphql"
               `(document
                 ,@(map (lambda (number)
                          `(query (#(issue #:number ,number)
                                   number title open severity tags)))
                        chunk)))))

         (for-each
          (lambda (res)
            (let ((data (cdr res)))
              (hash-set! number-to-data
                         (assoc-ref data "number")
                         `((title . ,(assoc-ref data "title"))
                           (open? . ,(assoc-ref data "open"))
                           (tags . ,(vector->list
                                     (assoc-ref data "tags")))
                           (severity . ,(assoc-ref data "severity"))))))
          response)))
     30
     (list-copy numbers))

    (map (lambda (number)
           (hash-ref number-to-data number))
         numbers)))