type Headers = {
	"Content-Type": string
	"X-Version": string
	Authorization?: string
}

async function createClient<T>(config: {
	baseUrl: string
	token: string
	version: string
	method: string
	publicKey: string
}): Promise<T> {
	const version = config.version ?? "1.0.1"
	const method = config.method ?? "GET"

	const headers: Headers = {
		"Content-Type": "application/json",
		"X-Version": version,
	}

	if (config.token !== undefined) {
		headers.Authorization = `Bearer ${config.token}`
		const response = await fetch(config.baseUrl, { method: method, headers })
		if (!response.ok) {
			throw new Error(response.statusText)
		}
		return (await response.json()) as T
	}

	const response = await fetch(`${config.baseUrl}/token`, {
		method: "POST",
		headers,
		body: JSON.stringify({
			publicKey: config.publicKey,
		}),
	})
	if (!response.ok) {
		throw new Error(response.statusText)
	}
	return (await response.json()) as T
}