export type LlmConfig = {
  apiKey: string;
  baseUrl: string;
  model: string;
};

export const DEFAULT_LLM_BASE_URL = "https://api.deepseek.com/anthropic";
export const DEFAULT_LLM_MODEL = "deepseek-v4-flash";
export const LLM_SETTINGS_STORAGE_KEY = "agentic-pm-demo.llm-settings";

function clean(value: string | undefined | null) {
  return value?.trim() ?? "";
}

export function normalizeLlmConfig(
  config?: Partial<LlmConfig> | null,
): LlmConfig {
  const apiKey = clean(config?.apiKey);
  const baseUrl = (clean(config?.baseUrl) || DEFAULT_LLM_BASE_URL).replace(
    /\/+$/,
    "",
  );
  const model = clean(config?.model) || DEFAULT_LLM_MODEL;

  return {
    apiKey,
    baseUrl,
    model,
  };
}

export function isLlmConfigReady(
  config?: Partial<LlmConfig> | null,
): config is LlmConfig {
  const normalized = normalizeLlmConfig(config);
  return Boolean(
    normalized.apiKey && normalized.baseUrl && normalized.model,
  );
}

export function isAnthropicCompatibleBaseUrl(baseUrl: string) {
  return /anthropic/i.test(baseUrl);
}