import { CHAT_PROVIDERS, PROVIDER_URLS, PluginSettings, PostProcessingProvider } from "./SettingsManager";

export interface ResolvedChatProvider {
	apiKey: string;
	endpoint: string;
	provider: PostProcessingProvider;
}

/**
 * Resolves the API key + endpoint for a chat-completion provider selection.
 * Shared by every AI feature that talks to an LLM (Post-Processing,
 * Proofreading, Title Generation, Property Filler) so they all treat
 * providers — including "no key configured" — identically.
 */
export function resolveChatProvider(
	settings: PluginSettings,
	provider: PostProcessingProvider
): ResolvedChatProvider | null {
	const info = CHAT_PROVIDERS.find((p) => p.id === provider);
	if (!info) return null;

	const apiKey = settings[info.apiKeyField];
	const endpoint = provider === "custom" ? settings.customApiUrl : PROVIDER_URLS[provider];

	if (!apiKey || !endpoint) return null;
	return { apiKey, endpoint, provider };
}