export const DETAIL_AGENT_LOCAL_MOONSHOT_SETTING_KEY =
  "canvas_detail_agent_moonshot_config";
// Stable option id: keep the historical value so existing site settings remain valid.
export const DETAIL_AGENT_LOCAL_MOONSHOT_OPTION_ID =
  "__moonshot_kimi_k25_local__";
export const DETAIL_AGENT_LOCAL_MOONSHOT_BASE_URL =
  "https://api.kimi.com/coding/v1";
export const DETAIL_AGENT_LOCAL_MOONSHOT_MODEL_ID = "kimi-for-coding";
export const DETAIL_AGENT_LOCAL_MOONSHOT_DISPLAY_NAME =
  "Kimi Code 编程套餐";

const LEGACY_MOONSHOT_BASE_URLS = new Set([
  "https://api.moonshot.cn/v1",
  "https://api.moonshot.ai/v1",
  "https://api.moonshot.cn/v1/chat/completions",
  "https://api.moonshot.ai/v1/chat/completions",
]);

export type DetailAgentLocalMoonshotConfig = {
  enabled: boolean;
  providerName: string;
  baseUrl: string;
  apiKey: string;
  modelId: string;
  displayName: string;
};

export function isDetailAgentLocalMoonshotOption(value: unknown) {
  return String(value || "").trim() === DETAIL_AGENT_LOCAL_MOONSHOT_OPTION_ID;
}

function normalizeMoonshotModelId(value: unknown) {
  const modelId = String(value || "").trim();
  if (
    !modelId ||
    modelId === "kimi-k2.5" ||
    modelId === "kimi-k2.6" ||
    modelId === "kimi-k2.7-code" ||
    modelId === "kimi-k2.7-code-highspeed"
  ) {
    return DETAIL_AGENT_LOCAL_MOONSHOT_MODEL_ID;
  }
  return modelId;
}

export function normalizeDetailAgentLocalMoonshotBaseUrl(value: unknown) {
  const clean = String(value || "")
    .trim()
    .replace(/\/+$/, "");
  if (!clean || LEGACY_MOONSHOT_BASE_URLS.has(clean)) {
    return DETAIL_AGENT_LOCAL_MOONSHOT_BASE_URL;
  }
  if (clean === `${DETAIL_AGENT_LOCAL_MOONSHOT_BASE_URL}/chat/completions`) {
    return DETAIL_AGENT_LOCAL_MOONSHOT_BASE_URL;
  }
  return clean;
}

export function isDetailAgentLocalMoonshotBaseUrl(value: unknown) {
  return (
    normalizeDetailAgentLocalMoonshotBaseUrl(value) ===
    DETAIL_AGENT_LOCAL_MOONSHOT_BASE_URL
  );
}

function normalizeMoonshotDisplayName(value: unknown) {
  const displayName = String(value || "").trim();
  if (
    !displayName ||
    displayName === "官方 Kimi K2.5" ||
    displayName === "官方 Kimi K2.6" ||
    displayName === "官方 Kimi K2.7 Code Highspeed" ||
    displayName === "Kimi Code 编程套餐 K2.7 Highspeed"
  ) {
    return DETAIL_AGENT_LOCAL_MOONSHOT_DISPLAY_NAME;
  }
  return displayName;
}

export function normalizeDetailAgentLocalMoonshotConfig(
  value: unknown,
): DetailAgentLocalMoonshotConfig {
  const raw =
    value && typeof value === "object" && !Array.isArray(value)
      ? (value as Record<string, unknown>)
      : {};

  return {
    enabled: raw.enabled !== false,
    providerName:
      String(raw.providerName || "").trim() || "Kimi Code 编程套餐",
    baseUrl: normalizeDetailAgentLocalMoonshotBaseUrl(raw.baseUrl),
    apiKey: String(raw.apiKey || "").trim(),
    modelId: normalizeMoonshotModelId(raw.modelId),
    displayName: normalizeMoonshotDisplayName(raw.displayName),
  };
}