PHASE 0 - FOUNDATION:TAMAGUI

backend/src/controllers/transactions.ts

@@ -133,3 +133,25 @@ export const getSpendingTrend: RequestHandler = async (req, res) => {
     res.status(500).json({ error: `Internal server error: ${error}` });
   }
 };
+
+export const getMonthlySpending: RequestHandler = async (req, res) => {
+  const { user_id } = req.params;
+
+  const query = `
+    SELECT 
+      TO_CHAR(date, 'YYYY-MM') AS month,
+      SUM(amount) AS total
+    FROM transactions
+    WHERE user_id = $1
+    GROUP BY month
+    ORDER BY month ASC;
+  `;
+
+  try {
+    const result = await client.query(query, [user_id]);
+    res.status(200).json(result.rows);
+  } catch (error) {
+    console.error("Error fetching monthly data:", error);
+    res.status(500).json({ error: `Internal server error: ${error}` });
+  }
+};

backend/src/db/setup_db.sh

@@ -4,35 +4,35 @@
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 # Drop the database if it exists
-psql -U postgres -c "DROP DATABASE IF EXISTS tritonspend;"
+psql -U postgres -c "DROP DATABASE IF EXISTS postgres;"
 
 # Create the new database
-psql -U postgres -c "CREATE DATABASE tritonspend;"
+psql -U postgres -c "CREATE DATABASE postgres;"
 
 # Grant all privileges to the postgres user on the new database
-psql -U postgres -c "GRANT ALL PRIVILEGES ON DATABASE tritonspend TO postgres;"
+psql -U postgres -c "GRANT ALL PRIVILEGES ON DATABASE postgres TO postgres;"
 
 # Run the schema SQL file to create the tables (using absolute path)
-psql -U postgres -d tritonspend -f "${SCRIPT_DIR}/database.sql"
+psql -U postgres -d postgres -f "${SCRIPT_DIR}/database.sql"
 
 # Change ownership of all tables to postgres user
-psql -U postgres -d tritonspend -c "ALTER DATABASE tritonspend OWNER TO postgres;"
-psql -U postgres -d tritonspend -c "ALTER SCHEMA public OWNER TO postgres;"
+psql -U postgres -d postgres -c "ALTER DATABASE postgres OWNER TO postgres;"
+psql -U postgres -d postgres -c "ALTER SCHEMA public OWNER TO postgres;"
 
 # Grant all privileges on the tables to postgres
-psql -U postgres -d tritonspend -c "GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO postgres;"
+psql -U postgres -d postgres -c "GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO postgres;"
 
 # Change ownership of all existing tables to postgres
-psql -U postgres -d tritonspend -c "DO \$\$ DECLARE r RECORD; BEGIN FOR r IN (SELECT tablename FROM pg_tables WHERE schemaname = 'public') LOOP EXECUTE 'ALTER TABLE ' || quote_ident(r.tablename) || ' OWNER TO postgres'; END LOOP; END \$\$;"
+psql -U postgres -d postgres -c "DO \$\$ DECLARE r RECORD; BEGIN FOR r IN (SELECT tablename FROM pg_tables WHERE schemaname = 'public') LOOP EXECUTE 'ALTER TABLE ' || quote_ident(r.tablename) || ' OWNER TO postgres'; END LOOP; END \$\$;"
 
 # Change ownership of all sequences to postgres
-psql -U postgres -d tritonspend -c "DO \$\$ DECLARE r RECORD; BEGIN FOR r IN (SELECT sequence_name FROM information_schema.sequences WHERE sequence_schema = 'public') LOOP EXECUTE 'ALTER SEQUENCE ' || quote_ident(r.sequence_name) || ' OWNER TO postgres'; END LOOP; END \$\$;"
+psql -U postgres -d postgres -c "DO \$\$ DECLARE r RECORD; BEGIN FOR r IN (SELECT sequence_name FROM information_schema.sequences WHERE sequence_schema = 'public') LOOP EXECUTE 'ALTER SEQUENCE ' || quote_ident(r.sequence_name) || ' OWNER TO postgres'; END LOOP; END \$\$;"
 
 # Change ownership of all functions to postgres
-psql -U postgres -d tritonspend -c "DO \$\$ DECLARE r RECORD; BEGIN FOR r IN (SELECT routine_name FROM information_schema.routines WHERE routine_schema = 'public' AND routine_type = 'FUNCTION') LOOP EXECUTE 'ALTER FUNCTION ' || quote_ident(r.routine_name) || ' OWNER TO postgres'; END LOOP; END \$\$;"
+psql -U postgres -d postgres -c "DO \$\$ DECLARE r RECORD; BEGIN FOR r IN (SELECT routine_name FROM information_schema.routines WHERE routine_schema = 'public' AND routine_type = 'FUNCTION') LOOP EXECUTE 'ALTER FUNCTION ' || quote_ident(r.routine_name) || ' OWNER TO postgres'; END LOOP; END \$\$;"
 
 # Ensure future tables also get privileges automatically
-psql -U postgres -d tritonspend -c "ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON TABLES TO postgres;"
-psql -U postgres -d tritonspend -c "ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON SEQUENCES TO postgres;"
+psql -U postgres -d postgres -c "ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON TABLES TO postgres;"
+psql -U postgres -d postgres -c "ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON SEQUENCES TO postgres;"
 
 echo "✅ Database setup complete!"

backend/src/routes/transactions.ts

@@ -4,6 +4,7 @@ import {
   getTransactions,
   deleteTransaction,
   getSpendingTrend,
+  getMonthlySpending,
 } from "../controllers/transactions";
 
 const router = express.Router();
@@ -17,4 +18,6 @@ router.delete("/:user_id/:transaction_id", deleteTransaction);
 
 router.get("/spendingTrend/:user_id", getSpendingTrend);
 
+router.get("/monthly/:user_id", getMonthlySpending);
+
 export default router;

env.d.ts

@@ -0,0 +1,4 @@
+// env.d.ts
+declare module "@env" {
+  export const BACKEND_PORT: number;
+}