-- Super Admin AI prompt templates (per website / domain), with public share ids.

CREATE TABLE IF NOT EXISTS ai_prompt_templates (
  id          BIGSERIAL PRIMARY KEY,
  domain_id   BIGINT NOT NULL REFERENCES domains (id) ON DELETE CASCADE,
  name        VARCHAR(255) NOT NULL,
  body        TEXT NOT NULL,
  public_id   VARCHAR(32) NOT NULL,
  created_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
  updated_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
  CONSTRAINT ai_prompt_templates_public_id_unique UNIQUE (public_id)
);

CREATE INDEX IF NOT EXISTS idx_ai_prompt_templates_domain_id
  ON ai_prompt_templates (domain_id);

CREATE INDEX IF NOT EXISTS idx_ai_prompt_templates_created_at
  ON ai_prompt_templates (created_at DESC);

CREATE OR REPLACE FUNCTION ai_prompt_templates_set_updated_at()
RETURNS TRIGGER AS $$
BEGIN
  NEW.updated_at = now();
  RETURN NEW;
END;
$$ LANGUAGE plpgsql;

DROP TRIGGER IF EXISTS ai_prompt_templates_set_updated_at ON ai_prompt_templates;
CREATE TRIGGER ai_prompt_templates_set_updated_at
  BEFORE UPDATE ON ai_prompt_templates
  FOR EACH ROW
  EXECUTE FUNCTION ai_prompt_templates_set_updated_at();