-- broker_schedule table
-- Stores scheduled jobs (cron-like functionality)

CREATE TABLE IF NOT EXISTS broker_schedule (
    id_broker_schedule BIGSERIAL PRIMARY KEY,
    name VARCHAR(255) NOT NULL UNIQUE,
    cron_expr VARCHAR(100) NOT NULL,
    enabled BOOLEAN NOT NULL DEFAULT true,
    job_name VARCHAR(255) NOT NULL,
    job_priority INTEGER NOT NULL DEFAULT 0,
    job_queue INTEGER NOT NULL DEFAULT 1,
    job_language VARCHAR(50) NOT NULL DEFAULT 'sql',
    execute_str TEXT NOT NULL,
    run_as VARCHAR(100),
    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
    last_run_at TIMESTAMP WITH TIME ZONE,
    next_run_at TIMESTAMP WITH TIME ZONE,

    CONSTRAINT broker_schedule_job_queue_check CHECK (job_queue > 0)
);

-- Indexes
CREATE INDEX IF NOT EXISTS idx_broker_schedule_enabled ON broker_schedule(enabled);
CREATE INDEX IF NOT EXISTS idx_broker_schedule_next_run ON broker_schedule(next_run_at) WHERE enabled = true;
CREATE INDEX IF NOT EXISTS idx_broker_schedule_name ON broker_schedule(name);

-- Comments
COMMENT ON TABLE broker_schedule IS 'Scheduled jobs (cron-like functionality)';
COMMENT ON COLUMN broker_schedule.name IS 'Unique name for the schedule';
COMMENT ON COLUMN broker_schedule.cron_expr IS 'Cron expression for scheduling';
COMMENT ON COLUMN broker_schedule.enabled IS 'Whether the schedule is active';
COMMENT ON COLUMN broker_schedule.job_name IS 'Name of the job to create';
COMMENT ON COLUMN broker_schedule.execute_str IS 'SQL or code to execute';
COMMENT ON COLUMN broker_schedule.last_run_at IS 'Last time the job was executed';
COMMENT ON COLUMN broker_schedule.next_run_at IS 'Next scheduled execution time';

-- Trigger to update updated_at
CREATE OR REPLACE FUNCTION tf_broker_schedule_update_timestamp()
RETURNS TRIGGER AS $$
BEGIN
    NEW.updated_at = NOW();
    RETURN NEW;
END;
$$ LANGUAGE plpgsql;

CREATE TRIGGER t_broker_schedule_updated_at
    BEFORE UPDATE ON broker_schedule
    FOR EACH ROW
    EXECUTE FUNCTION tf_broker_schedule_update_timestamp();