From fc6bbf3e3cbfd7288715833af8154ee5f0fc554c Mon Sep 17 00:00:00 2001
From: Christopher Baines <mail@cbaines.net>
Date: Wed, 4 Sep 2019 13:03:29 +0200
Subject: Change license code to use insert-missing-data-and-return-all-ids

As this now supports inserting sets of data.
---
 guix-data-service/model/license.scm | 107 +++++++-----------------------------
 1 file changed, 20 insertions(+), 87 deletions(-)

diff --git a/guix-data-service/model/license.scm b/guix-data-service/model/license.scm
index 73df612..0aa65eb 100644
--- a/guix-data-service/model/license.scm
+++ b/guix-data-service/model/license.scm
@@ -1,6 +1,7 @@
 (define-module (guix-data-service model license)
   #:use-module (srfi srfi-1)
   #:use-module (ice-9 vlist)
+  #:use-module (ice-9 match)
   #:use-module (squee)
   #:use-module (guix inferior)
   #:use-module (guix-data-service model utils)
@@ -43,95 +44,27 @@
   (inferior-eval '(use-modules (guix licenses)) inf)
   (inferior-eval (proc packages) inf))
 
-(define (insert-licenses values)
-  (string-append
-   "INSERT INTO licenses "
-   "(name, uri, comment) "
-   "VALUES "
-   (string-join
-    (map (lambda (license-values)
-           (string-append
-            "("
-            (string-join
-             (map value->quoted-string-or-null
-                  license-values)
-             ", ")
-            ")"))
-         values)
-    ", ")
-   " RETURNING id"))
-
 (define (inferior-packages->license-id-lists conn inf packages)
   (define license-data
     (inferior-packages->license-data inf packages))
 
-  (define (sort-license-ids ids)
-    (map number->string
-         (sort (map string->number ids) <)))
-
-  (define (non-string-to-false lst)
-    (map (lambda (value)
-           (if (string? value)
-               value
-               #f))
-         lst))
-
-  (define (empty-string-to-false lst)
-    ;; TODO squee returns empty strings for null values, which will probably
-    ;; cause problems
-    (map (lambda (value)
-           (if (string? value)
-               (if (string-null? value)
-                   #f
-                   value)
-               value))
-         lst))
-
-  (let* ((unique-license-tuples
-          (filter (lambda (license-tuple)
-                    (not (null? license-tuple)))
-                  (delete-duplicates
-                   (map
-                    (lambda (lst)
-                      (non-string-to-false
-                       (empty-string-to-false lst)))
-                    (concatenate license-data)))))
-         (existing-license-entries
-          (exec-query->vhash conn
-                             "SELECT id, name, uri, comment FROM licenses"
-                             (lambda (vals)
-                               (non-string-to-false
-                                (empty-string-to-false (cdr vals))))
-                             first)) ;; id
-         (missing-license-entries
-          (delete-duplicates
-           (filter (lambda (values)
-                     (not (vhash-assoc values
-                                       existing-license-entries)))
-                   unique-license-tuples)))
-         (new-license-entries
-          (if (null? missing-license-entries)
-              '()
-              (map first
-                   (exec-query conn
-                               (insert-licenses missing-license-entries)))))
-         (new-entries-id-lookup-vhash
-          (two-lists->vhash missing-license-entries
-                            new-license-entries)))
+  (define (string-or-null v)
+    (if (string? v)
+        v
+        ;; save non string values as NULL
+        NULL))
 
-    (map (lambda (license-value-lists)
-           (sort-license-ids
-            (map (lambda (license-values)
-                   (cdr
-                    (or (vhash-assoc license-values
-                                     existing-license-entries)
-                        (vhash-assoc license-values
-                                     new-entries-id-lookup-vhash)
-                        (begin
-                          (error "missing license entry"
-                                 license-values)))))
-                 (map (lambda (lst)
-                        (non-string-to-false
-                         (empty-string-to-false lst)))
-                      license-value-lists))))
-         license-data)))
+  (insert-missing-data-and-return-all-ids
+   conn
+   "licenses"
+   `(name uri comment)
+   (map (lambda (license-tuples)
+          (map
+           (match-lambda
+             ((name uri comment)
+              (list name
+                    (string-or-null uri)
+                    (string-or-null comment))))
+           license-tuples))
+        license-data)
+   #:sets-of-data? #t))
-- 
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