export const CODEX_RESERVE_MODEL = "gpt-reserve";

export interface CodexReserveStatus {
	accountKey: string;
	entryAllowed: boolean;
	ordinaryUsageRecovered: boolean;
}

function record(value: unknown): Record<string, unknown> {
	return value !== null && typeof value === "object" && !Array.isArray(value) ? value as Record<string, unknown> : {};
}

// Identity and the backend banner authorize switching; a visible quota bucket does not.
export function parseCodexReserveStatus(
	payload: unknown,
	identity: { accountId: string; userId: string },
	modelId: string,
): CodexReserveStatus | undefined {
	const root = record(payload);
	if (root["account_id"] !== identity.accountId || root["user_id"] !== identity.userId) return undefined;
	const banner = record(root["rate_limit_upsell"]);
	const ordinaryAllowed = record(root["rate_limit"])["allowed"];
	const credits = record(root["credits"]);
	return {
		accountKey: JSON.stringify([identity.accountId, identity.userId]),
		entryAllowed: banner["banner_type"] === "luna_reserve"
			&& (banner["blocked_model_slug"] == null || banner["blocked_model_slug"] === modelId),
		ordinaryUsageRecovered: typeof ordinaryAllowed === "boolean"
			&& (ordinaryAllowed || credits["has_credits"] === true || credits["unlimited"] === true)
			&& root["rate_limit_upsell"] == null
			&& record(root["spend_control"])["reached"] !== true
			&& root["rate_limit_reached_type"] == null,
	};
}