-- +goose Up
-- Agent 4/10: async AI fallback jobs after FAQ match miss.

CREATE TABLE IF NOT EXISTS support_auto_jobs (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  ticket_id UUID NOT NULL REFERENCES support_tickets(id) ON DELETE CASCADE,
  company_id UUID NOT NULL REFERENCES companies(id) ON DELETE CASCADE,
  status TEXT NOT NULL DEFAULT 'pending'
    CHECK (status IN ('pending', 'running', 'done', 'failed')),
  attempt INT NOT NULL DEFAULT 0,
  last_error TEXT,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE UNIQUE INDEX IF NOT EXISTS support_auto_jobs_ticket_active_uidx
  ON support_auto_jobs (ticket_id)
  WHERE status IN ('pending', 'running');

CREATE INDEX IF NOT EXISTS support_auto_jobs_status_created_idx
  ON support_auto_jobs (status, created_at ASC)
  WHERE status = 'pending';

CREATE INDEX IF NOT EXISTS support_auto_jobs_company_idx
  ON support_auto_jobs (company_id, created_at DESC);

-- +goose Down
DROP INDEX IF EXISTS support_auto_jobs_company_idx;
DROP INDEX IF EXISTS support_auto_jobs_status_created_idx;
DROP INDEX IF EXISTS support_auto_jobs_ticket_active_uidx;
DROP TABLE IF EXISTS support_auto_jobs;