Issue #8 ADD purchase/bodyparts table

src/db/schema.ts

-import { serial, varchar, timestamp, numeric, pgTable } from "drizzle-orm/pg-core";
+import { serial, varchar, timestamp, numeric, pgEnum, integer, pgTable } from "drizzle-orm/pg-core";
 
-export const implants = pgTable('implants', {
+export const implantsTable = pgTable('implants', {
   id: serial('id').primaryKey().unique().notNull(),
   name: varchar('nome', {length: 255}).notNull(),
   created_at: timestamp('created_at').notNull().defaultNow(),
@@ -9,3 +9,23 @@ export const implants = pgTable('implants', {
   bodyPart: varchar('bodyPart', {length: 255}).notNull(),
   updated_at: timestamp('updated_at').notNull().defaultNow(),
 });
+
+export const bodyPartsEnum = pgEnum('bodyPartsEnum', [
+  'FrontalCortex',
+  'OperatingSystem',
+  'Arms',
+  'Skeleton',
+  'NervousSystem',
+  'IntegumentarySystem',
+  'Face',
+  'Hands',
+  'CirculatorySystem',
+  'Legs',
+]);
+
+export const purchasesTable = pgTable('pursaches', {
+  id: serial('id').primaryKey().unique().notNull(),
+  user_id: integer('user_id').notNull().references(() => usersTable.id, { onDelete: "cascade" }),
+  implant_id: integer('user_id').notNull().references(() => implantsTable.id, { onDelete: "cascade" }),
+  created_at: timestamp('created_at').notNull().defaultNow(),
+}) 
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