-- ===========================================
-- MECANICAS DIESEL - Customers Table
-- ===========================================
-- Tabla de clientes para el taller
-- Nota: Esta tabla se crea en service_management para mantener
-- consistencia con las referencias de service_orders

SET search_path TO service_management, public;

-- -------------------------------------------
-- CUSTOMERS - Clientes del taller
-- -------------------------------------------
CREATE TABLE IF NOT EXISTS service_management.customers (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    tenant_id UUID NOT NULL,  -- Identificador del taller (multi-tenant)

    -- Tipo de cliente
    customer_type VARCHAR(20) DEFAULT 'individual'
        CHECK (customer_type IN ('individual', 'company', 'fleet')),

    -- Identificación
    name VARCHAR(200) NOT NULL,
    legal_name VARCHAR(300),
    rfc VARCHAR(13),

    -- Contacto
    email VARCHAR(200),
    phone VARCHAR(20),
    phone_secondary VARCHAR(20),

    -- Dirección
    address TEXT,
    city VARCHAR(100),
    state VARCHAR(100),
    postal_code VARCHAR(10),

    -- Términos comerciales (para empresas/flotas)
    credit_days INTEGER DEFAULT 0 CHECK (credit_days >= 0),
    credit_limit DECIMAL(12,2) DEFAULT 0 CHECK (credit_limit >= 0),
    discount_labor_pct DECIMAL(5,2) DEFAULT 0 CHECK (discount_labor_pct >= 0 AND discount_labor_pct <= 100),
    discount_parts_pct DECIMAL(5,2) DEFAULT 0 CHECK (discount_parts_pct >= 0 AND discount_parts_pct <= 100),

    -- Estadísticas
    total_orders INTEGER DEFAULT 0 CHECK (total_orders >= 0),
    total_spent DECIMAL(14,2) DEFAULT 0 CHECK (total_spent >= 0),
    last_visit_at TIMESTAMP WITH TIME ZONE,

    -- Notas y preferencias
    notes TEXT,
    preferred_contact VARCHAR(20) DEFAULT 'phone'
        CHECK (preferred_contact IN ('phone', 'email', 'whatsapp')),

    -- Estado
    is_active BOOLEAN DEFAULT true,

    -- Audit
    created_by UUID,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),

    -- Constraints
    CONSTRAINT uq_customer_email UNIQUE (tenant_id, email),
    CONSTRAINT uq_customer_rfc UNIQUE (tenant_id, rfc)
);

-- Índices
CREATE INDEX idx_customers_tenant ON service_management.customers(tenant_id);
CREATE INDEX idx_customers_email ON service_management.customers(tenant_id, email);
CREATE INDEX idx_customers_phone ON service_management.customers(phone);
CREATE INDEX idx_customers_rfc ON service_management.customers(rfc);
CREATE INDEX idx_customers_type ON service_management.customers(tenant_id, customer_type);
CREATE INDEX idx_customers_name ON service_management.customers(tenant_id, name);
CREATE INDEX idx_customers_active ON service_management.customers(tenant_id, is_active);

-- Trigger updated_at
CREATE TRIGGER trg_customers_updated_at
    BEFORE UPDATE ON service_management.customers
    FOR EACH ROW EXECUTE FUNCTION trigger_set_updated_at();

-- RLS
SELECT create_tenant_rls_policies('service_management', 'customers');

-- Comentarios
COMMENT ON TABLE service_management.customers IS 'Clientes del taller mecánico';
COMMENT ON COLUMN service_management.customers.customer_type IS 'Tipo: individual (persona física), company (empresa), fleet (flota)';
COMMENT ON COLUMN service_management.customers.credit_days IS 'Días de crédito otorgados al cliente';
COMMENT ON COLUMN service_management.customers.credit_limit IS 'Límite de crédito en pesos';
COMMENT ON COLUMN service_management.customers.discount_labor_pct IS 'Descuento en mano de obra (%)';
COMMENT ON COLUMN service_management.customers.discount_parts_pct IS 'Descuento en refacciones (%)';
COMMENT ON COLUMN service_management.customers.total_orders IS 'Total de órdenes de servicio acumuladas';
COMMENT ON COLUMN service_management.customers.total_spent IS 'Total gastado por el cliente';