BEGIN;

CREATE TABLE IF NOT EXISTS app_settings (
    key TEXT PRIMARY KEY,
    value JSONB NOT NULL DEFAULT '{}'::jsonb,
    created_at TIMESTAMP WITHOUT TIME ZONE DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP WITHOUT TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

CREATE TRIGGER trg_app_settings_updated_at
    BEFORE UPDATE ON app_settings
    FOR EACH ROW EXECUTE FUNCTION set_updated_at();

INSERT INTO app_settings(key, value)
VALUES
    ('INCOMING_LETTER_PREFIX', '{"value": "ESLI"}'::jsonb),
    ('INCOMING_LETTER_SEQUENCE', '{"value": 0}'::jsonb),
    ('INCOMING_LETTER_RECIPIENTS', '{"department_codes": ["aslog"]}'::jsonb)
ON CONFLICT (key) DO NOTHING;

COMMIT;