-- +goose Up
CREATE EXTENSION IF NOT EXISTS pgcrypto;
CREATE EXTENSION IF NOT EXISTS pg_stat_statements;

CREATE TABLE IF NOT EXISTS tenants (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  slug text NOT NULL UNIQUE,
  name text NOT NULL,
  preset text NOT NULL,
  locale text NOT NULL DEFAULT 'cs',
  timezone text NOT NULL DEFAULT 'Europe/Prague',
  plan_code text NOT NULL DEFAULT 'starter',
  subscription_status text NOT NULL DEFAULT 'trialing',
  stripe_customer_id text,
  stripe_subscription_id text,
  created_at timestamptz NOT NULL DEFAULT now(),
  updated_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS users (
  id uuid PRIMARY KEY,
  email text NOT NULL,
  display_name text,
  created_at timestamptz NOT NULL DEFAULT now(),
  updated_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS tenant_users (
  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
  user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
  role text NOT NULL,
  created_at timestamptz NOT NULL DEFAULT now(),
  PRIMARY KEY (tenant_id, user_id)
);

CREATE TABLE IF NOT EXISTS locations (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
  name text NOT NULL,
  timezone text NOT NULL,
  created_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS staff (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
  location_id uuid REFERENCES locations(id) ON DELETE SET NULL,
  display_name text NOT NULL,
  active boolean NOT NULL DEFAULT true,
  created_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS services (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
  name text NOT NULL,
  duration_minutes integer NOT NULL,
  buffer_before_minutes integer NOT NULL DEFAULT 0,
  buffer_after_minutes integer NOT NULL DEFAULT 0,
  price_cents integer NOT NULL DEFAULT 0,
  created_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS class_templates (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
  title text NOT NULL,
  duration_minutes integer NOT NULL,
  capacity integer NOT NULL,
  created_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS class_sessions (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
  template_id uuid NOT NULL REFERENCES class_templates(id) ON DELETE CASCADE,
  location_id uuid REFERENCES locations(id) ON DELETE SET NULL,
  starts_at timestamptz NOT NULL,
  ends_at timestamptz NOT NULL,
  capacity integer NOT NULL,
  created_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS availability_rules (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
  staff_id uuid REFERENCES staff(id) ON DELETE CASCADE,
  day_of_week integer NOT NULL,
  starts_local time NOT NULL,
  ends_local time NOT NULL,
  created_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS availability_exceptions (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
  staff_id uuid REFERENCES staff(id) ON DELETE CASCADE,
  starts_at timestamptz NOT NULL,
  ends_at timestamptz NOT NULL,
  kind text NOT NULL,
  reason text,
  created_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS bookings (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
  service_id uuid REFERENCES services(id) ON DELETE SET NULL,
  class_session_id uuid REFERENCES class_sessions(id) ON DELETE SET NULL,
  staff_id uuid REFERENCES staff(id) ON DELETE SET NULL,
  location_id uuid REFERENCES locations(id) ON DELETE SET NULL,
  booking_mode text NOT NULL,
  customer_name text NOT NULL,
  customer_email text NOT NULL,
  starts_at timestamptz NOT NULL,
  ends_at timestamptz NOT NULL,
  status text NOT NULL,
  reference text NOT NULL UNIQUE,
  notes text,
  created_at timestamptz NOT NULL DEFAULT now(),
  updated_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS waitlist_entries (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
  class_session_id uuid NOT NULL REFERENCES class_sessions(id) ON DELETE CASCADE,
  customer_name text NOT NULL,
  customer_email text NOT NULL,
  position integer NOT NULL,
  status text NOT NULL DEFAULT 'pending',
  created_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS reminder_jobs (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
  booking_id uuid REFERENCES bookings(id) ON DELETE CASCADE,
  channel text NOT NULL,
  scheduled_for timestamptz NOT NULL,
  dispatched_at timestamptz,
  status text NOT NULL DEFAULT 'pending',
  created_at timestamptz NOT NULL DEFAULT now()
);

CREATE TABLE IF NOT EXISTS subscription_events (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id uuid NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
  stripe_event_id text NOT NULL UNIQUE,
  event_type text NOT NULL,
  payload jsonb NOT NULL,
  processed_at timestamptz,
  created_at timestamptz NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS idx_bookings_tenant_time ON bookings (tenant_id, starts_at DESC);
CREATE INDEX IF NOT EXISTS idx_sessions_tenant_time ON class_sessions (tenant_id, starts_at DESC);
CREATE INDEX IF NOT EXISTS idx_reminder_jobs_pending ON reminder_jobs (scheduled_for) WHERE status = 'pending';

-- +goose Down
DROP TABLE IF EXISTS subscription_events;
DROP TABLE IF EXISTS reminder_jobs;
DROP TABLE IF EXISTS waitlist_entries;
DROP TABLE IF EXISTS bookings;
DROP TABLE IF EXISTS availability_exceptions;
DROP TABLE IF EXISTS availability_rules;
DROP TABLE IF EXISTS class_sessions;
DROP TABLE IF EXISTS class_templates;
DROP TABLE IF EXISTS services;
DROP TABLE IF EXISTS staff;
DROP TABLE IF EXISTS locations;
DROP TABLE IF EXISTS tenant_users;
DROP TABLE IF EXISTS users;
DROP TABLE IF EXISTS tenants;