feat(pos): add v1.1 migration — sale_payments, layaway_items, customer_payments

pos/migrations/runner.py

@@ -13,7 +13,7 @@ MIGRATIONS_DIR = os.path.dirname(os.path.abspath(__file__))
 # Migration registry: version -> filename
 MIGRATIONS = {
     'v1.0': 'v1.0_initial.sql',
-    # Future: 'v1.1': 'v1.1_add_xyz.sql',
+    'v1.1': 'v1.1_pos_tables.sql',
 }
 
 

pos/migrations/v1.1_pos_tables.sql

@@ -0,0 +1,55 @@
+-- /home/Autopartes/pos/migrations/v1.1_pos_tables.sql
+-- POS Plan 3: Additional tables for sale payments and layaway items.
+-- Run against each tenant DB.
+
+-- Sale payments: tracks individual payment methods for a sale (especially mixed payments)
+CREATE TABLE IF NOT EXISTS sale_payments (
+    id              SERIAL PRIMARY KEY,
+    sale_id         INTEGER REFERENCES sales(id),
+    register_id     INTEGER REFERENCES cash_registers(id),
+    method          VARCHAR(20) NOT NULL,           -- efectivo, transferencia, tarjeta
+    amount          NUMERIC(12,2) NOT NULL,
+    reference       VARCHAR(100),                    -- transaction ref for non-cash
+    created_at      TIMESTAMPTZ DEFAULT NOW()
+);
+
+CREATE INDEX IF NOT EXISTS idx_sale_payments_sale ON sale_payments(sale_id);
+
+-- Customer payments: tracks credit payments (abonos) against customer balance
+CREATE TABLE IF NOT EXISTS customer_payments (
+    id              SERIAL PRIMARY KEY,
+    customer_id     INTEGER REFERENCES customers(id),
+    amount          NUMERIC(12,2) NOT NULL,
+    payment_method  VARCHAR(20) NOT NULL DEFAULT 'efectivo',
+    reference       VARCHAR(100),
+    employee_id     INTEGER REFERENCES employees(id),
+    register_id     INTEGER REFERENCES cash_registers(id),
+    created_at      TIMESTAMPTZ DEFAULT NOW()
+);
+
+CREATE INDEX IF NOT EXISTS idx_customer_payments_customer ON customer_payments(customer_id);
+
+-- Layaway items: line items for a layaway (mirrors quotation_items structure)
+CREATE TABLE IF NOT EXISTS layaway_items (
+    id              SERIAL PRIMARY KEY,
+    layaway_id      INTEGER REFERENCES layaways(id),
+    inventory_id    INTEGER REFERENCES inventory(id),
+    part_number     VARCHAR(100),
+    name            VARCHAR(300),
+    quantity        INTEGER NOT NULL,
+    unit_price      NUMERIC(12,2) NOT NULL,
+    discount_pct    NUMERIC(5,2) DEFAULT 0,
+    tax_rate        NUMERIC(5,4) DEFAULT 0.16,
+    subtotal        NUMERIC(12,2) NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS idx_layaway_items_layaway ON layaway_items(layaway_id);
+
+-- Additional indexes for POS query performance
+CREATE INDEX IF NOT EXISTS idx_sales_register ON sales(register_id) WHERE status = 'completed';
+CREATE INDEX IF NOT EXISTS idx_sales_customer ON sales(customer_id);
+CREATE INDEX IF NOT EXISTS idx_sales_created ON sales(created_at DESC);
+CREATE INDEX IF NOT EXISTS idx_sales_branch_date ON sales(branch_id, created_at DESC);
+CREATE INDEX IF NOT EXISTS idx_quotations_customer ON quotations(customer_id);
+CREATE INDEX IF NOT EXISTS idx_layaways_customer ON layaways(customer_id);
+CREATE INDEX IF NOT EXISTS idx_cash_registers_employee ON cash_registers(employee_id) WHERE status = 'open';