const API_BASE = `${location.protocol}//${location.hostname}${location.port ? `:${location.port}` : ""}/api`;

function getToken() {
  return localStorage.getItem("token") || "";
}

function setToken(token) {
  localStorage.setItem("token", token || "");
}

function clearAuth() {
  localStorage.removeItem("token");
  localStorage.removeItem("me");
}

async function getMe(forceRefresh = false) {
  const cached = localStorage.getItem("me");
  if (!forceRefresh && cached) {
    try {
      return JSON.parse(cached);
    } catch (_) {}
  }
  const me = await api("/me");
  localStorage.setItem("me", JSON.stringify(me));
  return me;
}

async function api(path, options = {}) {
  const headers = { "Content-Type": "application/json", ...(options.headers || {}) };
  const token = getToken();
  if (token) headers.Authorization = `Bearer ${token}`;

  let resp;
  try {
    resp = await fetch(`${API_BASE}${path}`, { ...options, headers });
  } catch (networkError) {
    console.error("Network error:", networkError);
    throw new Error("网络请求失败，请检查网络连接");
  }

  let data = {};
  try {
    data = await resp.json();
  } catch (_) {}

  if (!resp.ok) {
    if (resp.status === 413) {
      throw new Error("照片过大，请降低清晰度后重试");
    }
    if (resp.status === 401) {
      clearAuth();
      const isAdminPath = window.location.pathname.includes("admin");
      const loginPage = isAdminPath ? "/admin.html" : "/";
      if (window.location.pathname !== loginPage) {
        window.location.href = loginPage;
      }
      throw new Error(data.detail || "登录已过期，请重新登录");
    }
    const error = new Error(data.detail || "请求失败");
    error.status = resp.status;
    error.data = data;
    throw error;
  }
  return data;
}

function colorToLeaflet(color) {
  if (color === "green") return "#188038";
  if (color === "yellow") return "#fbbc04";
  if (color === "half-yellow-half-green") return "#0b57d0";
  return "#d93025";
}