-- Billing / Razorpay subscriptions.
-- Idempotent: safe to re-run (used by debug-migration hot-apply too).

-- Subscription lifecycle enum (mirrors Razorpay states).
DO $$ BEGIN
  CREATE TYPE subscription_status_enum AS ENUM (
    'created','authenticated','active','pending',
    'halted','cancelled','completed','expired','paused'
  );
EXCEPTION WHEN duplicate_object THEN NULL; END $$;

-- Plans: maps a Razorpay plan_id -> what it grants.
CREATE TABLE IF NOT EXISTS subscription_plans (
  id               uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  razorpay_plan_id text NOT NULL UNIQUE,
  name             text NOT NULL,
  price_paise      integer NOT NULL,
  storage_bytes    bigint NOT NULL,
  member_limit     integer NOT NULL,
  child_limit      integer NOT NULL DEFAULT 3,
  is_active        boolean NOT NULL DEFAULT true,
  created_at       timestamptz NOT NULL DEFAULT now()
);

-- One subscription row per family (append on upgrade).
CREATE TABLE IF NOT EXISTS family_subscriptions (
  id                       uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  family_id                uuid NOT NULL REFERENCES families(id) ON DELETE CASCADE,
  plan_id                  uuid NOT NULL REFERENCES subscription_plans(id),
  razorpay_subscription_id text NOT NULL UNIQUE,
  razorpay_customer_id     text,
  status                   subscription_status_enum NOT NULL DEFAULT 'created',
  current_start            timestamptz,
  current_end              timestamptz,
  cancelled_at             timestamptz,
  ended_at                 timestamptz,
  created_at               timestamptz NOT NULL DEFAULT now(),
  updated_at               timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS family_subscriptions_family_idx
  ON family_subscriptions (family_id);

-- At most one LIVE (non-terminal) subscription per family.
CREATE UNIQUE INDEX IF NOT EXISTS family_live_sub_idx
  ON family_subscriptions (family_id)
  WHERE status IN ('created','authenticated','active','pending','halted');

-- Append-only webhook log. razorpay_event_id = idempotency key.
CREATE TABLE IF NOT EXISTS razorpay_webhook_events (
  id                uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  razorpay_event_id text NOT NULL UNIQUE,
  event_type        text NOT NULL,
  payload           jsonb NOT NULL,
  received_at       timestamptz NOT NULL DEFAULT now()
);