-- =====================================================================
-- FlatRender V2 — Database Setup
-- Single PostgreSQL database with per-service schemas
-- =====================================================================

-- Extensions
CREATE EXTENSION IF NOT EXISTS "pgcrypto";       -- gen_random_uuid()
CREATE EXTENSION IF NOT EXISTS "citext";         -- case-insensitive text (emails)
CREATE EXTENSION IF NOT EXISTS "pg_trgm";        -- fuzzy text search

-- =====================================================================
-- Schemas (one per microservice)
-- =====================================================================
CREATE SCHEMA IF NOT EXISTS identity;
CREATE SCHEMA IF NOT EXISTS content;
CREATE SCHEMA IF NOT EXISTS studio;
CREATE SCHEMA IF NOT EXISTS render;
CREATE SCHEMA IF NOT EXISTS file_mgr;
CREATE SCHEMA IF NOT EXISTS notification;

-- =====================================================================
-- Service users (each microservice connects with limited grants)
-- =====================================================================
-- Run separately by ops:
--   CREATE USER svc_identity     WITH PASSWORD '...';
--   CREATE USER svc_content      WITH PASSWORD '...';
--   CREATE USER svc_studio       WITH PASSWORD '...';
--   CREATE USER svc_render       WITH PASSWORD '...';
--   CREATE USER svc_file         WITH PASSWORD '...';
--   CREATE USER svc_notification WITH PASSWORD '...';
--   GRANT ALL ON SCHEMA identity     TO svc_identity;
--   GRANT ALL ON SCHEMA content      TO svc_content;
--   ... etc.
--   Read-only cross-schema grants where needed (defined per service)

-- =====================================================================
-- Common helper: auto-update updated_at on row update
-- =====================================================================
CREATE OR REPLACE FUNCTION public.tg_set_updated_at()
RETURNS TRIGGER AS $$
BEGIN
  NEW.updated_at = NOW();
  RETURN NEW;
END;
$$ LANGUAGE plpgsql;

-- =====================================================================
-- Common helper: soft-delete check (used in policies/views later)
-- =====================================================================
-- Convention: every soft-deletable table has `deleted_at TIMESTAMPTZ NULL`
-- Active rows: WHERE deleted_at IS NULL