-- Migration: 026_create_erp_entities.sql
-- Description: Create tables for Customers and Suppliers in ERP

-- ERP Entities (Customers and Suppliers)
CREATE TABLE IF NOT EXISTS erp_entities (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    tenant_id UUID NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
    name VARCHAR(255) NOT NULL,
    document VARCHAR(20), -- CPF/CNPJ
    email VARCHAR(255),
    phone VARCHAR(20),
    type VARCHAR(20) NOT NULL CHECK (type IN ('customer', 'supplier', 'both')),
    status VARCHAR(20) DEFAULT 'active',
    address TEXT,
    city VARCHAR(100),
    state VARCHAR(2),
    zip VARCHAR(10),
    notes TEXT,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

-- Update Financial Transactions to link with Entities
ALTER TABLE erp_financial_transactions ADD COLUMN IF NOT EXISTS entity_id UUID REFERENCES erp_entities(id);

-- Update Orders to link with Entities instead of companies (optional but more consistent for ERP)
-- Keep customer_id for now to avoid breaking existing logic, but allow entity_id
ALTER TABLE erp_orders ADD COLUMN IF NOT EXISTS entity_id UUID REFERENCES erp_entities(id);

-- Indexes
CREATE INDEX IF NOT EXISTS idx_erp_entities_tenant ON erp_entities(tenant_id);
CREATE INDEX IF NOT EXISTS idx_erp_entities_type ON erp_entities(type);