-- Migration manual: construtos que o Prisma DSL não expressa nativamente.
-- Fonte de verdade: Etapas/seconectai-vendas-schema.sql
-- Contém: extensão pgcrypto, CHECK constraint, índices parciais, views de
-- dashboard e Row Level Security (ENABLE + CREATE POLICY) para isolamento
-- entre tenants.

CREATE EXTENSION IF NOT EXISTS "pgcrypto";

-- ============================================================
-- CHECK constraints
-- ============================================================

ALTER TABLE "tenants"
    ADD CONSTRAINT "tenants_dia_vencimento_mensalidade_check"
    CHECK ("dia_vencimento_mensalidade" BETWEEN 1 AND 28);

-- ============================================================
-- Índices parciais
-- ============================================================

CREATE INDEX "idx_tenant_faturas_venc"
    ON "tenant_faturas"("vencimento")
    WHERE "status" IN ('pendente', 'atrasado');

CREATE INDEX "idx_sale_payments_venc"
    ON "sale_payments"("vencimento")
    WHERE "status" IN ('pendente', 'atrasado');

-- ============================================================
-- Views de dashboard (painel do tenant)
-- ============================================================

CREATE VIEW "vw_resumo_vendas_semanal" AS
SELECT
    s.tenant_id,
    date_trunc('week', s.data_venda)::date AS semana,
    COUNT(*)                                 AS qtd_vendas,
    SUM(s.valor_total)                       AS total_vendido
FROM sales s
WHERE s.status IN ('confirmada', 'concluida')
GROUP BY s.tenant_id, date_trunc('week', s.data_venda);

CREATE VIEW "vw_resumo_vendas_mensal" AS
SELECT
    s.tenant_id,
    date_trunc('month', s.data_venda)::date AS mes,
    COUNT(*)                                  AS qtd_vendas,
    SUM(s.valor_total)                        AS total_vendido
FROM sales s
WHERE s.status IN ('confirmada', 'concluida')
GROUP BY s.tenant_id, date_trunc('month', s.data_venda);

CREATE VIEW "vw_recebimentos" AS
SELECT
    sp.id,
    s.tenant_id,
    s.customer_id,
    sp.valor,
    sp.vencimento,
    sp.status,
    sp.pago_em
FROM sale_payments sp
JOIN sales s ON s.id = sp.sale_id;

-- ============================================================
-- Row Level Security — isolamento entre tenants
-- ============================================================
-- A aplicação deve definir, por conexão/transação:
--   SET app.current_tenant_id = '<uuid-do-tenant-logado>';
-- Usuários master (que enxergam todos os tenants) usam uma role de banco
-- separada (ex: app_master) que faz BYPASS RLS, ou uma policy adicional
-- que libera quando app.is_master = 'true'. Implementado na Etapa 2.

ALTER TABLE "customers"                  ENABLE ROW LEVEL SECURITY;
ALTER TABLE "customer_contacts"          ENABLE ROW LEVEL SECURITY;
ALTER TABLE "products_services"          ENABLE ROW LEVEL SECURITY;
ALTER TABLE "sales"                      ENABLE ROW LEVEL SECURITY;
ALTER TABLE "sale_items"                 ENABLE ROW LEVEL SECURITY;
ALTER TABLE "sale_payments"              ENABLE ROW LEVEL SECURITY;
ALTER TABLE "tenant_users"               ENABLE ROW LEVEL SECURITY;
ALTER TABLE "tenant_whatsapp_instances"  ENABLE ROW LEVEL SECURITY;
ALTER TABLE "tenant_email_config"        ENABLE ROW LEVEL SECURITY;

CREATE POLICY "tenant_isolation_customers" ON "customers"
    USING ("tenant_id" = current_setting('app.current_tenant_id', true)::uuid);

CREATE POLICY "tenant_isolation_products" ON "products_services"
    USING ("tenant_id" = current_setting('app.current_tenant_id', true)::uuid);

CREATE POLICY "tenant_isolation_sales" ON "sales"
    USING ("tenant_id" = current_setting('app.current_tenant_id', true)::uuid);

CREATE POLICY "tenant_isolation_tenant_users" ON "tenant_users"
    USING ("tenant_id" = current_setting('app.current_tenant_id', true)::uuid);

CREATE POLICY "tenant_isolation_whatsapp" ON "tenant_whatsapp_instances"
    USING ("tenant_id" = current_setting('app.current_tenant_id', true)::uuid);

CREATE POLICY "tenant_isolation_email_config" ON "tenant_email_config"
    USING ("tenant_id" = current_setting('app.current_tenant_id', true)::uuid);

-- sale_items e customer_contacts não têm tenant_id direto: isolar via join
CREATE POLICY "tenant_isolation_sale_items" ON "sale_items"
    USING ("sale_id" IN (
        SELECT id FROM sales
        WHERE tenant_id = current_setting('app.current_tenant_id', true)::uuid
    ));

CREATE POLICY "tenant_isolation_sale_payments" ON "sale_payments"
    USING ("sale_id" IN (
        SELECT id FROM sales
        WHERE tenant_id = current_setting('app.current_tenant_id', true)::uuid
    ));

CREATE POLICY "tenant_isolation_customer_contacts" ON "customer_contacts"
    USING ("customer_id" IN (
        SELECT id FROM customers
        WHERE tenant_id = current_setting('app.current_tenant_id', true)::uuid
    ));