Check keywords on transaction, update shop gold

Shops now have a "type" and keywords of items they only deal with.

Also add vendors table in preparation for implementing the endpoint.

db/migrations/20201111205247_initial.sql

@@ -13,6 +13,11 @@ CREATE TABLE "shops" (
     "name" VARCHAR(255) NOT NULL,
     "owner_id" INTEGER REFERENCES "owners"(id) NOT NULL,
     "description" TEXT,
+    "gold" INTEGER NOT NULL DEFAULT 0
+        CONSTRAINT "shop_gold_gt_zero" CHECK (gold >= 0),
+    "shop_type" VARCHAR(255) NOT NULL DEFAULT 'general_store',
+    "vendor_keywords" TEXT[] NOT NULL DEFAULT '{"VendorItemKey", "VendorNoSale"}',
+    "vendor_keywords_exclude" BOOLEAN NOT NULL DEFAULT true,
     "created_at" timestamp(3) NOT NULL,
     "updated_at" timestamp(3) NOT NULL
 );
@@ -36,6 +41,14 @@ CREATE TABLE "merchandise_lists" (
     "updated_at" timestamp(3) NOT NULL
 );
 CREATE INDEX "merchandise_lists_mod_name_and_local_form_id" ON "merchandise_lists" USING GIN (form_list jsonb_path_ops);
+CREATE TABLE "vendors" (
+    "id" SERIAL PRIMARY KEY NOT NULL,
+    "shop_id" INTEGER REFERENCES "shops"(id) NOT NULL UNIQUE,
+    "owner_id" INTEGER REFERENCES "owners"(id) NOT NULL,
+    "name" VARCHAR(255) NOT NULL,
+    "body_preset" INTEGER NOT NULL
+);
+CREATE UNIQUE INDEX "vendors_unique_name_and_owner_id" ON "vendors" ("name", "owner_id", "shop_id");
 CREATE TABLE "transactions" (
     "id" SERIAL PRIMARY KEY NOT NULL,
     "shop_id" INTEGER REFERENCES "shops"(id) NOT NULL,

db/reset_db.pgsql

@@ -3,4 +3,5 @@ DROP TABLE shops CASCADE;
 DROP TABLE interior_ref_lists CASCADE;
 DROP TABLE merchandise_lists CASCADE;
 DROP TABLE transactions CASCADE;
+DROP TABLE vendors CASCADE;
 DROP TABLE _sqlx_migrations CASCADE;