Simplify aime_player schema

schema/init/aime.sql

@@ -1,35 +1,9 @@
-create table "aime_shop" (
-    "id" integer primary key not null,
-    "ext_id" integer not null,
-    "name" text not null,
-    "region" text not null,
-    constraint "aime_shop_uq" unique ("ext_id")
-);
-
-create table "aime_machine" (
-    "id" integer primary key not null,
-    "shop_id" integer not null
-            references "aime_shop"("id"),
-    "pcb_id" text not null,
-    "keychip_id" text not null,
-    constraint "aime_machine_pcb_id_uq" unique ("pcb_id"),
-    constraint "aime_machine_keychip_id_uq" unique ("keychip_id")
-);
-
 create table "aime_player" (
     "id" integer primary key not null,
     "ext_id" integer not null,
-    "register_time" timestamp not null,
-    constraint "aime_player_uq" unique ("ext_id")
-);
-
-create table "aime_card" (
-    "id" integer primary key not null,
-    "player_id" integer not null
-            references "aime_player"("id")
-            on delete cascade,
-    "nfc_id" text not null,
+    "luid" text not null,
     "register_time" timestamp not null,
     "access_time" timestamp not null,
-    constraint "aime_card_uq" unique ("nfc_id")
+    constraint "aime_player_ext_id_uq" unique ("ext_id"),
+    constraint "aime_player_luid_uq" unique ("luid")
 );

schema/migrate/M0007-aime-simplify-player.sql

@@ -0,0 +1,27 @@
+-- Can't add NOT NULL or UNIQUE constraints as we'd like to. Fortunately we
+-- haven't released anything yet so there aren't really any DBs with live
+-- data out there in the wild.
+
+-- (Can't drop and recreate the table either btw because "aime_player" is
+-- transitively referenced by _literally everything_).
+
+alter table "aime_player" add column "luid" text;
+alter table "aime_player" add column "access_time" text;
+
+update      "aime_player" as "p"
+set         "luid" = (
+                    select      "c"."nfc_id"
+                    from        "aime_card" as "c"
+                    where       "c"."player_id" = "p"."id"
+            ),
+            "access_time" = (
+                    select      "c"."access_time"
+                    from        "aime_card" as "c"
+                    where       "c"."player_id" = "p"."id"
+            );
+
+drop table "aime_card";
+
+-- These were never used. Re-create them if they become necessary.
+drop table "aime_machine";
+drop table "aime_shop";