export const DEFAULT_CHAT_MODEL: string =
  process.env.NEXT_PUBLIC_DEFAULT_CHAT_MODEL ?? "chat-model";

export type ChatModel = {
  id: string;
  name: string;
  description: string;
};

const baseName = (id: string, fallback: string): string =>
  process.env[`NEXT_PUBLIC_MODEL_${id.toUpperCase()}_NAME`] ?? fallback;

const baseDescription = (id: string, fallback: string): string =>
  process.env[`NEXT_PUBLIC_MODEL_${id.toUpperCase()}_DESCRIPTION`] ?? fallback;

export const chatModels: ChatModel[] = [
  {
    id: "chat-model",
    name: baseName("chat-model", "Grok Vision"),
    description: baseDescription(
      "chat-model",
      "多模态模型，支持文字与图片理解"
    ),
  },
  {
    id: "chat-model-reasoning",
    name: baseName("chat-model-reasoning", "Grok Reasoning"),
    description: baseDescription(
      "chat-model-reasoning",
      "偏重复杂推理、链式思考的模型"
    ),
  },
  {
    id: "qwen3-vl-plus",
    name: baseName("qwen3-vl-plus", "Qwen3 VL Plus"),
    description: baseDescription(
      "qwen3-vl-plus",
      "阿里云通义千问多模态模型（Qwen3 VL Plus，支持图文理解与推理）"
    ),
  },
  {
    id: "gpt-5-nano",
    name: baseName("gpt-5-nano", "GPT-5 Nano"),
    description: baseDescription(
      "gpt-5-nano",
      "第三方 GPT-5 Nano 模型（通过 OpenAI 兼容 API 接入）"
    ),
  },
];