From 33b8c178f29e1643b8fa928696cc4154c8709d9e Mon Sep 17 00:00:00 2001
From: Djalim Simaila <DjalimS.pro@outlook.fr>
Date: Fri, 3 Apr 2026 10:41:11 +0200
Subject: [PATCH] feat(db): add PostgreSQL connection and schema definitions

---
 databases/db.ts     | 14 ++++++++++++++
 databases/schema.ts | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 databases/db.ts
 create mode 100644 databases/schema.ts

diff --git a/databases/db.ts b/databases/db.ts
new file mode 100644
index 0000000..b405c39
--- /dev/null
+++ b/databases/db.ts
@@ -0,0 +1,14 @@
+import { drizzle } from "npm:drizzle-orm/node-postgres";
+import pg from "npm:pg";
+
+const { Pool } = pg;
+
+const pool = new Pool({
+  host: Deno.env.get("POSTGRES_HOST"),
+  port: Number(Deno.env.get("POSTGRES_PORT") ?? 5432),
+  user: Deno.env.get("POSTGRES_USER"),
+  password: Deno.env.get("POSTGRES_PASS"),
+  database: Deno.env.get("POSTGRES_DB"),
+});
+
+export const db = drizzle(pool);
diff --git a/databases/schema.ts b/databases/schema.ts
new file mode 100644
index 0000000..1d7632e
--- /dev/null
+++ b/databases/schema.ts
@@ -0,0 +1,32 @@
+import {
+  date,
+  integer,
+  pgTable,
+  serial,
+  text,
+} from "npm:drizzle-orm/pg-core";
+
+export const promotions = pgTable("promotions", {
+  id: serial("id").primaryKey(),
+  endyear: integer("endyear"),
+  current: integer("current"),
+});
+
+export const students = pgTable("students", {
+  userId: text("userId").primaryKey(),
+  firstName: text("firstName"),
+  lastName: text("lastName"),
+  mail: text("mail"),
+  promotionId: integer("promotionId").references(() => promotions.id),
+});
+
+export const mobility = pgTable("mobility", {
+  id: serial("id").primaryKey(),
+  studentId: text("studentId").references(() => students.userId),
+  startDate: date("startDate"),
+  endDate: date("endDate"),
+  weeksCount: integer("weeksCount"),
+  destinationCountry: text("destinationCountry"),
+  destinationName: text("destinationName"),
+  mobilityStatus: text("mobilityStatus").default("N/A"),
+});