const defaultHeaders = { "Content-Type": "application/json" };

const rawBase = document.querySelector('meta[name="app-base"]')?.content || "";
const basePath = normalizeBase(rawBase);
const withBase = (path) => `${basePath}${path}`;

function normalizeBase(value) {
  if (!value) return "";
  if (!value.startsWith("/")) return `/${value}`;
  return value.endsWith("/") ? value.slice(0, -1) : value;
}

async function request(path, { method = "GET", body } = {}) {
  const res = await fetch(withBase(path), {
    method,
    credentials: "same-origin",
    headers: defaultHeaders,
    body: body ? JSON.stringify(body) : undefined,
  });

  if (!res.ok) {
    let msg = `${res.status}`;
    try {
      const data = await res.json();
      msg = data.error || data.detail || data.title || JSON.stringify(data);
    } catch { /* ignore */ }
    const err = new Error(msg);
    err.status = res.status;
    throw err;
  }
  return res.status === 204 ? null : res.json();
}

export const api = {
  state: () => request("/api/state"),
  me: () => request("/api/me"),
  register: (payload) => request("/api/auth/register", { method: "POST", body: payload }),
  login: (payload) => request("/api/auth/login", { method: "POST", body: payload }),
  logout: () => request("/api/auth/logout", { method: "POST" }),

  mySuggestions: () => request("/api/suggestions/mine"),
  createSuggestion: (payload) => request("/api/suggestions", { method: "POST", body: payload }),
  deleteSuggestion: (id) => request(`/api/suggestions/${id}`, { method: "DELETE" }),
  updateSuggestion: (id, payload) => request(`/api/suggestions/${id}`, { method: "PUT", body: payload }),
  allSuggestions: () => request("/api/suggestions/all"),

  myVotes: () => request("/api/votes/mine"),
  vote: (suggestionId, score) => request("/api/votes", { method: "POST", body: { suggestionId, score } }),
  finalizeVotes: (final) => request("/api/votes/finalize", { method: "POST", body: { final } }),

  results: () => request("/api/results"),
  nextPhase: () => request("/api/me/phase/next", { method: "POST" }),
  prevPhase: () => request("/api/me/phase/prev", { method: "POST" }),
};

export const adminApi = {
  setResultsOpen: (resultsOpen) => request("/api/admin/results", { method: "POST", body: { resultsOpen } }),
  voteStatus: () => request("/api/admin/vote-status"),
  reset: () => request("/api/admin/reset", { method: "POST" }),
  factoryReset: () => request("/api/admin/factory-reset", { method: "POST" }),
  grantJoker: (playerId) => request("/api/admin/joker", { method: "POST", body: { playerId } }),
  deletePlayer: (playerId) => request(`/api/admin/players/${playerId}`, { method: "DELETE" }),
  linkSuggestions: (sourceSuggestionId, targetSuggestionId) =>
    request("/api/admin/link-suggestions", { method: "POST", body: { sourceSuggestionId, targetSuggestionId } }),
  unlinkSuggestions: (suggestionId) =>
    request("/api/admin/unlink-suggestions", { method: "POST", body: { suggestionId } }),
};
