Initial commit

src/db/init.ts

@@ -0,0 +1,167 @@
+import { pool } from './pool';
+
+async function initDB() {
+  const client = await pool.connect();
+  try {
+    await client.query('BEGIN');
+
+    console.log('Creating tables...');
+
+    // 1. Catalogue Module
+    await client.query(`
+      CREATE TABLE IF NOT EXISTS drugs (
+        id VARCHAR(50) PRIMARY KEY,
+        generic_name VARCHAR(255) NOT NULL,
+        atc_code VARCHAR(50),
+        schedule VARCHAR(20),
+        is_nti BOOLEAN DEFAULT false,
+        pregnancy_category VARCHAR(10)
+      );
+    `);
+
+    await client.query(`
+      CREATE TABLE IF NOT EXISTS products (
+        id VARCHAR(50) PRIMARY KEY,
+        drug_id VARCHAR(50) REFERENCES drugs(id),
+        brand_name VARCHAR(255) NOT NULL,
+        manufacturer VARCHAR(255),
+        strength VARCHAR(50),
+        form VARCHAR(50),
+        mrp DECIMAL(10, 2),
+        dpco_ceiling DECIMAL(10, 2)
+      );
+    `);
+
+    // 2. Inventory Module
+    await client.query(`
+      CREATE TABLE IF NOT EXISTS batches (
+        batch_no VARCHAR(100) PRIMARY KEY,
+        product_id VARCHAR(50) REFERENCES products(id),
+        expiry DATE NOT NULL,
+        qty_on_hand INTEGER NOT NULL CHECK (qty_on_hand >= 0),
+        purchase_price DECIMAL(10, 2),
+        status VARCHAR(50) DEFAULT 'available'
+      );
+    `);
+
+    await client.query(`
+      CREATE TABLE IF NOT EXISTS stock_movements (
+        id SERIAL PRIMARY KEY,
+        batch_no VARCHAR(100) REFERENCES batches(batch_no),
+        movement_type VARCHAR(50) NOT NULL, -- 'receipt', 'dispense', 'adjustment'
+        qty_delta INTEGER NOT NULL,
+        reference_id VARCHAR(100),
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+      );
+    `);
+
+    // 3. Dispensing & Audit
+    await client.query(`
+      CREATE TABLE IF NOT EXISTS dispensing_records (
+        id VARCHAR(50) PRIMARY KEY,
+        subject_ref VARCHAR(100) NOT NULL,
+        tenant_id VARCHAR(50) NOT NULL,
+        dispensed_by VARCHAR(100) NOT NULL,
+        prescription_id VARCHAR(50),
+        total_amount DECIMAL(10, 2) DEFAULT 0,
+        payment_method VARCHAR(50) DEFAULT 'cash',
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+      );
+    `);
+
+    await client.query(`
+      CREATE TABLE IF NOT EXISTS overrides_log (
+        id SERIAL PRIMARY KEY,
+        dispensing_id VARCHAR(50) REFERENCES dispensing_records(id),
+        code VARCHAR(50) NOT NULL,
+        reason TEXT NOT NULL,
+        actor_user_id VARCHAR(100) NOT NULL,
+        occurred_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+      );
+    `);
+
+    await client.query(`
+      CREATE TABLE IF NOT EXISTS h1_registers (
+        id VARCHAR(50) PRIMARY KEY,
+        dispensing_id VARCHAR(50) REFERENCES dispensing_records(id),
+        patient_name VARCHAR(255) NOT NULL,
+        prescriber_name VARCHAR(255),
+        drug_name VARCHAR(255) NOT NULL,
+        batch_no VARCHAR(100),
+        qty INTEGER NOT NULL,
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+      );
+    `);
+
+    await client.query(`
+      CREATE TABLE IF NOT EXISTS order_drafts (
+        id VARCHAR(50) PRIMARY KEY,
+        subject_ref VARCHAR(100),
+        prescription_ref VARCHAR(50),
+        items JSONB,
+        status VARCHAR(20) DEFAULT 'draft',
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+        updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+      );
+    `);
+
+    await client.query(`
+      CREATE TABLE IF NOT EXISTS audit_logs (
+        id SERIAL PRIMARY KEY,
+        call_id VARCHAR(100),
+        actor_user_id VARCHAR(100),
+        task_type VARCHAR(50),
+        details JSONB,
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+      );
+    `);
+
+    // 4. Phase 2: Prescriptions
+    await client.query(`
+      CREATE TABLE IF NOT EXISTS prescriptions (
+        id VARCHAR(50) PRIMARY KEY,
+        image_path TEXT NOT NULL,
+        image_hash VARCHAR(64) NOT NULL,
+        status VARCHAR(20) DEFAULT 'processing',
+        extracted_data JSONB,
+        confirmed_data JSONB,
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+      );
+    `);
+
+    console.log('Seeding initial data...');
+    // Seed Dummy Data for UI
+    await client.query(`
+      INSERT INTO drugs (id, generic_name, schedule) VALUES 
+      ('drg_001', 'Losartan Potassium', 'H'),
+      ('drg_002', 'Sertraline', 'H')
+      ON CONFLICT (id) DO NOTHING;
+    `);
+
+    await client.query(`
+      INSERT INTO products (id, drug_id, brand_name, form, mrp) VALUES 
+      ('prd_4410', 'drg_001', 'Losar 50', 'tablet', 78.50),
+      ('prd_5510', 'drg_002', 'Sertra 50', 'tablet', 110.00)
+      ON CONFLICT (id) DO NOTHING;
+    `);
+
+    // Add batches. Let's add a near-expiry batch so the UI alert triggers
+    await client.query(`
+      INSERT INTO batches (batch_no, product_id, expiry, qty_on_hand, purchase_price) VALUES 
+      ('B4421', 'prd_4410', CURRENT_DATE + INTERVAL '15 days', 240, 50.00),
+      ('B4630', 'prd_5510', CURRENT_DATE + INTERVAL '200 days', 500, 80.00)
+      ON CONFLICT (batch_no) DO NOTHING;
+    `);
+
+    await client.query('COMMIT');
+    console.log('Database initialization and seeding completed successfully!');
+  } catch (error) {
+    await client.query('ROLLBACK');
+    console.error('Error initializing database:', error);
+  } finally {
+    client.release();
+    pool.end();
+  }
+}
+
+initDB();