export const PRODUCT_PLANNING_AI_MODEL_CONFIG_KEY = "product_planning_ai_model_config";
export const PRODUCT_PLANNING_AI_MODEL_DEFAULT_BASE_URL = "http://103.118.245.6:6081";
export const PRODUCT_PLANNING_AI_MODEL_DEFAULT_MODEL_ID = "Qwen3-VL-4B-Instruct";

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

function normalizeUrl(value: unknown, fallback: string) {
  const normalized = String(value || "").trim().replace(/\/+$/, "");
  const normalizedFallback = String(fallback || "").trim().replace(/\/+$/, "");
  return normalized || normalizedFallback;
}

function normalizeSecret(value: unknown, fallback = "") {
  const normalized = String(value || "").trim();
  const normalizedFallback = String(fallback || "").trim();
  return normalized || normalizedFallback;
}

export function defaultProductPlanningAiModelConfig(): ProductPlanningAiModelConfig {
  return {
    enabled: false,
    providerName: "Product Planning Qwen3-VL",
    baseUrl: PRODUCT_PLANNING_AI_MODEL_DEFAULT_BASE_URL,
    apiKey: "",
    modelId: PRODUCT_PLANNING_AI_MODEL_DEFAULT_MODEL_ID,
    displayName: "商品策划专用 Qwen3-VL",
  };
}

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

  return {
    enabled: raw.enabled === true,
    providerName:
      normalizeSecret(
        raw.providerName,
        fallback?.providerName || defaultProductPlanningAiModelConfig().providerName
      ) || defaultProductPlanningAiModelConfig().providerName,
    baseUrl: normalizeUrl(
      raw.baseUrl,
      fallback?.baseUrl || PRODUCT_PLANNING_AI_MODEL_DEFAULT_BASE_URL
    ),
    apiKey: normalizeSecret(raw.apiKey, fallback?.apiKey || ""),
    modelId:
      normalizeSecret(
        raw.modelId,
        fallback?.modelId || PRODUCT_PLANNING_AI_MODEL_DEFAULT_MODEL_ID
      ) || PRODUCT_PLANNING_AI_MODEL_DEFAULT_MODEL_ID,
    displayName:
      normalizeSecret(
        raw.displayName,
        fallback?.displayName || defaultProductPlanningAiModelConfig().displayName
      ) || defaultProductPlanningAiModelConfig().displayName,
  };
}

export function toProductPlanningOpenAIBaseUrl(baseUrl: string) {
  const normalized = normalizeUrl(baseUrl, PRODUCT_PLANNING_AI_MODEL_DEFAULT_BASE_URL);
  if (/\/v1$/i.test(normalized)) {
    return normalized;
  }
  return `${normalized}/v1`;
}