"use strict";

function req(path, options) {
  const headers = { "Content-Type": "application/json" };
  options = Object.assign({ method: "GET", headers }, options || {});
  if (options.body && typeof options.body === "object") {
    options.body = JSON.stringify(options.body);
  }
  return fetch(path, options).then(function (r) {
    return r.json().then(function (data) {
      if (!r.ok) throw new Error(data.error || "request failed");
      return data;
    });
  });
}

function postForm(path, form) {
  const data = {};
  for (const [k, v] of new FormData(form)) {
    if (v) data[k] = v;
  }
  return req(path, { method: "POST", body: JSON.stringify(data) });
}

function patchJson(path, body) {
  return req(path, { method: "PATCH", body: body });
}

function delReq(path) {
  return req(path, { method: "DELETE" });
}

function escapeHtml(s) {
  return String(s)
    .replace(/&/g, "&")
    .replace(/</g, "&lt;")
    .replace(/>/g, "&gt;")
    .replace(/"/g, "&quot;");
}

function uuid() {
  if (typeof crypto !== "undefined" && crypto.randomUUID) return crypto.randomUUID();
  const a = new Uint8Array(16);
  (crypto.getRandomValues || function () { for (let i = 0; i < a.length; i++) a[i] = Math.floor(Math.random() * 256); })(a);
  a[6] = (a[6] & 0x0f) | 0x40;
  a[8] = (a[8] & 0x3f) | 0x80;
  const hex = Array.from(a, b => b.toString(16).padStart(2, "0")).join("");
  return hex.slice(0, 8) + "-" + hex.slice(8, 12) + "-" + hex.slice(12, 16) + "-" + hex.slice(16, 20) + "-" + hex.slice(20);
}

function appendMsg(el, message, isError) {
  el.textContent = message || "";
  el.classList.toggle("hidden", !message);
  el.style.color = isError ? "#dc2626" : "#047857";
}