From 230ba670abaf7366a0ad9305aa5000af83b33623 Mon Sep 17 00:00:00 2001
From: Gabriel De Los Rios <gabriel.delosrios@tutamail.com>
Date: Sat, 17 Jan 2026 15:01:49 -0300
Subject: [PATCH] feat(persistance): add migration

---
 src/migrations/20260117.ts | 56 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 src/migrations/20260117.ts

diff --git a/src/migrations/20260117.ts b/src/migrations/20260117.ts
new file mode 100644
index 0000000..5171cbc
--- /dev/null
+++ b/src/migrations/20260117.ts
@@ -0,0 +1,56 @@
+const chainSql =
+  'CREATE TABLE IF NOT EXISTS chain ( ' +
+  'id INTEGER PRIMARY KEY AUTOINCREMENT, ' +
+  'image TEXT, ' +
+  'name TEXT ' +
+  ');';
+
+const establishmentSql =
+  'CREATE TABLE IF NOT EXISTS establishment ( ' +
+  'id INTEGER PRIMARY KEY AUTOINCREMENT ,' +
+  'address TEXT NOT NULL, ' +
+  'chain_id INTEGER NOT NULL, ' +
+  'FOREIGN KEY (chain_id) REFERENCES chain(id) ON DELETE CASCADE ' +
+  ');';
+
+const establishmentChainIdxSql =
+  'CREATE INDEX IF NOT EXISTS idx_establishment_chain_id ON establishment(chain_id);';
+
+const productSql =
+  'CREATE TABLE IF NOT EXISTS product ( ' +
+  'id INTEGER PRIMARY KEY AUTOINCREMENT, ' +
+  'barcode TEXT NOT NULL UNIQUE, ' +
+  'name TEXT NOT NULL DEFAULT "", ' +
+  'image TEXT ' +
+  ');';
+
+const productEstablishmentSql =
+  'CREATE TABLE IF NOT EXISTS product_establishment ( ' +
+  'id INTEGER PRIMARY KEY AUTOINCREMENT, ' +
+  'product_id INTEGER NOT NULL, ' +
+  'establishment_id INTEGER NOT NULL, ' +
+  'FOREIGN KEY (product_id) REFERENCES product(id) ON DELETE CASCADE, ' +
+  'FOREIGN KEY (establishment_id) REFERENCES establishment(id) ON DELETE CASCADE, ' +
+  'UNIQUE(product_id, establishment_id) ' +
+  ');';
+
+const purchaseSql =
+  'CREATE TABLE IF NOT EXISTS purchase ( ' +
+  'id INTEGER PRIMARY KEY AUTOINCREMENT, ' +
+  'establishment_id INTEGER NOT NULL, ' +
+  'product_id INTEGER NOT NULL, ' +
+  'price INTEGER NOT NULL DEFAULT 0, ' +
+  'quantity INTEGER NOT NULL DEFAULT 1, ' +
+  'date INTEGER NOT NULL, ' +
+  'FOREIGN KEY (establishment_id) REFERENCES establishment(id) ON DELETE CASCADE, ' +
+  'FOREIGN KEY (product_id) REFERENCES product(id) ON DELETE CASCADE ' +
+  ');';
+
+export const tables: [string, any[]][] = [
+  [chainSql, []],
+  [establishmentSql, []],
+  [establishmentChainIdxSql, []],
+  [productSql, []],
+  [productEstablishmentSql, []],
+  [purchaseSql, []],
+];