// Helpers shared by the staff panel (admin.js) and the public site (public.js).

const $ = (sel, root = document) => root.querySelector(sel);
const esc = (s) => String(s ?? "").replace(/[&<>"']/g, (c) => ({ "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#39;" }[c]));
const MIN = 60 * 1000;

const ICON = {
  search: '<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6"><circle cx="7" cy="7" r="4.5"/><path d="m10.5 10.5 3 3"/></svg>',
  plus: '<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round"><path d="M8 3v10M3 8h10"/></svg>',
};

// api calls the panel's JSON API and throws an Error carrying the server's message on failure.
async function api(path, { method = "GET", body } = {}) {
  const opts = { method, headers: { "X-Requested-With": "simpleadmin-web" }, credentials: "same-origin" };
  if (body !== undefined) {
    opts.headers["Content-Type"] = "application/json";
    opts.body = JSON.stringify(body);
  }
  let res;
  try {
    res = await fetch(path, opts);
  } catch {
    throw new Error("Couldn't reach the panel. Check your connection.");
  }
  let data = null;
  try { data = await res.json(); } catch { /* empty or non-JSON body */ }
  if (!res.ok) throw new Error(data?.error || `The panel answered ${res.status}.`);
  return data;
}

function qs(params) {
  const u = new URLSearchParams();
  for (const [k, v] of Object.entries(params)) if (v !== undefined && v !== null && v !== "") u.set(k, v);
  const s = u.toString();
  return s ? `?${s}` : "";
}

function debounce(fn, ms) {
  let t;
  return (...args) => { clearTimeout(t); t = setTimeout(() => fn(...args), ms); };
}

function fmtDuration(min) {
  if (min === 0) return "Permanent";
  if (min < 60) return `${min} min`;
  if (min < 1440) return `${Math.round(min / 60)} h`;
  const d = Math.round(min / 1440);
  return d === 1 ? "1 day" : `${d} days`;
}

function fmtAgo(iso) {
  const m = Math.round((Date.now() - new Date(iso).getTime()) / MIN);
  if (m < 1) return "now";
  if (m < 60) return `${m} min ago`;
  if (m < 1440) return `${Math.round(m / 60)} h ago`;
  const d = Math.round(m / 1440);
  return d === 1 ? "yesterday" : `${d} days ago`;
}

function fmtLeft(min) {
  if (min < 60) return `${Math.max(1, Math.round(min))} min left`;
  if (min < 1440) return `${Math.round(min / 60)} h left`;
  return `${Math.round(min / 1440)} d left`;
}

function fmtDate(iso) {
  return new Date(iso).toLocaleString(undefined, { day: "numeric", month: "short", hour: "2-digit", minute: "2-digit" });
}

// Minutes served and left on a timed penalty. With SimpleAdmin's online-only time mode, "passed"
// counts minutes served.
function served(p) {
  if (p.passed != null && p.status === "active" && !p.ends) return { done: p.passed, left: p.duration - p.passed };
  const start = new Date(p.created).getTime();
  const end = p.ends ? new Date(p.ends).getTime() : start + p.duration * MIN;
  const done = (Math.min(Date.now(), end) - start) / MIN;
  return { done, left: (end - Date.now()) / MIN };
}

function rankTag(rank) {
  if (!rank) return '<span class="faint">Player</span>';
  return `<span class="rank" style="--c:${esc(rank.color)}"><i></i>${esc(rank.label)}</span>`;
}

// A player's Steam avatar over their initial. /avatar only serves staff; for anyone else, or if
// Steam has none, the image fails and the initial shows (see the error listener below).
function avatar(sid, name, cls = "") {
  return `<span class="avatar ${cls}">${initial(name)}<img src="/avatar/${encodeURIComponent(sid)}" alt="" loading="lazy"></span>`;
}

// Error events don't bubble, so catch them on the way down; the CSP rules out inline onerror.
document.addEventListener("error", (e) => {
  if (e.target instanceof HTMLImageElement && e.target.parentElement?.classList.contains("avatar")) e.target.remove();
}, true);

function initial(name) { return esc(String(name || "").replace(/[^a-z0-9]/gi, "").charAt(0).toUpperCase() || "?"); }

// Time served against the full term: the bar under each length.
function termCell(p) {
  const cls = ["term", p.kind === "comm" ? "comm" : ""];
  let right;
  let pct = 100;
  if (p.duration === 0) {
    cls.push("perm");
    right = p.status === "lifted" ? "Lifted" : "Never expires";
    if (p.status === "lifted") cls.push("lifted");
  } else {
    const s = served(p);
    pct = Math.max(0, Math.min(100, (s.done / p.duration) * 100));
    if (p.status === "active") right = fmtLeft(s.left);
    else if (p.status === "expired") { right = "Served"; cls.push("done"); }
    else { right = "Lifted"; cls.push("lifted"); }
  }
  const bar = p.duration === 0 ? "" : `<span style="width:${pct.toFixed(1)}%"></span>`;
  return `<div class="${cls.join(" ")}">
    <div class="term-top"><b>${fmtDuration(p.duration)}</b><span class="muted">${right}</span></div>
    <div class="term-bar" role="img" aria-label="${esc(right)}">${bar}</div>
  </div>`;
}

function statusTag(p) {
  if (p.status === "active") return '<span class="tag red">Active</span>';
  if (p.status === "expired") return '<span class="tag">Expired</span>';
  return '<span class="tag green">Lifted</span>';
}

const COMM_LABEL = { GAG: "Gag", MUTE: "Mute", SILENCE: "Silence" };
const COMM_HELP = { GAG: "Text chat blocked", MUTE: "Voice blocked", SILENCE: "Text and voice blocked" };

function segmented(name, value, options) {
  return `<div class="segmented" role="group" data-seg="${name}">
    ${options.map(([v, l]) => `<button type="button" data-value="${v}" aria-pressed="${v === value}">${l}</button>`).join("")}
  </div>`;
}

function searchBox(placeholder, value) {
  return `<label class="search">${ICON.search}<input type="search" id="q" placeholder="${esc(placeholder)}" value="${esc(value)}" aria-label="${esc(placeholder)}" autocomplete="off"></label>`;
}

function pager(list) {
  const pages = Math.max(1, Math.ceil(list.total / list.pageSize));
  if (pages <= 1) return "";
  return `<div class="pager">
    <button class="btn sm ghost" type="button" data-page="${list.page - 1}" ${list.page <= 1 ? "disabled" : ""}>Newer</button>
    <span class="muted">Page ${list.page} of ${pages}</span>
    <button class="btn sm ghost" type="button" data-page="${list.page + 1}" ${list.page >= pages ? "disabled" : ""}>Older</button>
  </div>`;
}

function loading() { return '<div class="empty">Loading…</div>'; }

function errorBox(err) { return `<div class="empty">${esc(err.message)}</div>`; }

function closeDrawer() { $("#drawer-root").innerHTML = ""; }

function toast(msg) {
  const root = $("#toast-root");
  root.innerHTML = `<div class="toast">${esc(msg)}</div>`;
  clearTimeout(toast.t);
  toast.t = setTimeout(() => (root.innerHTML = ""), 3600);
}

const steamProfile = (sid) => `https://steamcommunity.com/profiles/${encodeURIComponent(sid)}`;