// Aegis wallet panel. All state comes from activate() via window.silentmode.
// This file renders the multi-wallet picker, per-chain views, and collects
// input; it never touches keys or the vault.
const $ = (id) => document.getElementById(id);
const S = window.silentmode;
let state = null;                // full state (all wallets + selected)
let tab = "receive";
let unit = null;                 // "big" | "small" — chain-dependent
let sendMax = false;
let planTimer = null;
let lastPlan = null;
let settingsFilled = false;      // when true, we don't overwrite user edits

const esc = (s) => String(s ?? "").replace(/[&<>"']/g, (c) => ({ "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#39;" })[c]);
const hostOf = (url) => { try { return new URL(url).host || url; } catch { return url; } };
const openUrl = (url) => S.invoke("openUrl", { url }).catch(() => {});
const cleanErr = (e) => String(e?.message || e).replace(/^Error invoking remote method '[^']+': Error: /, "");

// Selected wallet convenience.
const sel = () => state && state.selected;
const chain = () => sel()?.chain || "";
const decimals = () => sel()?.meta?.decimals || 8;
const ticker = () => sel()?.meta?.ticker || "";
const badgeOf = (chainKey) => (state?.chains || []).find((c) => `${c.chain}:${c.network}` === chainKey)?.badge || "🧩";

// Amount formatting: n_units -> string trimmed to the coin's precision.
function fmtBig(units, dec) {
  const d = dec != null ? dec : decimals();
  const s = (Number(units || 0) / Math.pow(10, d)).toFixed(d);
  return s.replace(/(\.\d*?[1-9])0+$|\.0+$/, "$1");
}
function fmtSmall(units) { return Number(units || 0).toLocaleString("en-US"); }
function smallUnitLabel() { return chain() === "bch" ? "sat" : "sun"; }
function bigUnitLabel() { return ticker(); }

// ---- tabs ------------------------------------------------------------------

document.querySelectorAll("nav button").forEach((b) => b.addEventListener("click", () => showTab(b.dataset.tab)));
function showTab(name) {
  tab = name;
  document.querySelectorAll("nav button").forEach((b) => b.classList.toggle("on", b.dataset.tab === name));
  document.querySelectorAll("main section").forEach((s) => { s.hidden = s.id !== "tab-" + name; });
  if (name === "settings") { settingsFilled = false; fillSettings(); }
  if (name === "send") applyUnitPicker();
}

// ---- wallet picker ---------------------------------------------------------

$("pickerBtn").addEventListener("click", () => {
  const d = $("drop");
  d.hidden = !d.hidden;
  if (!d.hidden) fillPicker();
});
document.addEventListener("click", (e) => {
  const d = $("drop");
  if (d.hidden) return;
  if (e.target.closest("#drop") || e.target.closest("#pickerBtn")) return;
  d.hidden = true;
});
function fillPicker() {
  const d = $("drop");
  const wallets = state?.wallets || [];
  const chains = state?.chains || [];
  const rows = wallets.map((w) => {
    const on = w.id === state.selectedWalletId ? "on" : "";
    const bal = w.balance ? fmtBig(w.balance.confirmed || 0, w.decimals) + " " + w.ticker : "—";
    return `<div class="row ${on}" data-select="${esc(w.id)}"><div class="b">${esc(w.badge)}</div><div class="m"><div class="l">${esc(w.label)}</div><div class="s">${esc(w.short)} · ${w.phase === "ready" ? esc(w.address || "") : esc(w.phase)}</div></div><div class="v">${esc(bal)}</div></div>`;
  }).join("");
  const chainList = chains.map((c) =>
    `<div class="netchoice" data-add="${esc(c.chain + ":" + c.network)}">${esc(c.badge)} ${esc(c.label)}</div>`
  ).join("");
  d.innerHTML = rows + `<hr><div class="add" id="addToggle">＋ Add wallet</div><div class="netgroup" id="netgroup">${chainList}</div>`;
  d.querySelectorAll("[data-select]").forEach((r) => r.addEventListener("click", async () => {
    d.hidden = true;
    try { state = await S.invoke("selectWallet", { id: r.dataset.select }); settingsFilled = false; render(); }
    catch (e) { showErr(cleanErr(e)); }
  }));
  $("addToggle").addEventListener("click", () => $("netgroup").classList.toggle("on"));
  d.querySelectorAll("[data-add]").forEach((r) => r.addEventListener("click", async () => {
    const [c, n] = r.dataset.add.split(":");
    d.hidden = true;
    try { state = await S.invoke("addWallet", { chain: c, network: n }); settingsFilled = false; render(); }
    catch (e) { showErr(cleanErr(e)); }
  }));
}
function showErr(text) {
  const box = $("gate");
  box.hidden = false; box.innerHTML = `<div class="big">⚠</div><div>${esc(text)}</div>`;
  setTimeout(() => { if (state?.selected?.phase === "ready") { box.hidden = true; } }, 3500);
}

// ---- render ----------------------------------------------------------------

function render() {
  if (!state) return;
  const s = sel();
  const ready = s && s.phase === "ready";
  $("tabs").hidden = !ready;
  const gate = $("gate");
  gate.hidden = ready;
  // Header
  $("hBadge").textContent = s?.meta?.badge || "🛡";
  $("hLabel").textContent = s?.label || "Aegis Wallet";
  if (!ready) {
    const copy = {
      locked:  ["🔒", "Unlock your password vault to open the wallet.", "Settings › Passwords. Aegis derives its keys from the vault seed, so there is nothing separate to unlock."],
      nosetup: ["🗝", "Set up a password vault to create your wallet.", "Settings › Passwords › Set up. Use a recovery phrase there and every wallet in Aegis can be recreated from it on any machine."],
      error:   ["⚠", "This wallet could not start.", s?.error || ""],
      empty:   ["🧩", "No wallets yet.", "Open the wallet picker at the top and pick a chain to create one."],
    }[s?.phase || "locked"] || ["…", "Starting…", ""];
    gate.innerHTML = `<div class="big">${copy[0]}</div><div><b>${esc(copy[1])}</b></div><div class="hint" style="margin-top:8px">${esc(copy[2])}</div>`;
  }
  // Balance line
  const dot = $("dot");
  dot.className = "dot " + (s?.server ? (s?.scanning ? "busy" : "on") : "");
  $("netlbl").textContent = s?.server ? hostOf(s.server) + (s?.scanning ? " · syncing" : "") : (ready ? "connecting…" : (s?.network || ""));
  if (ready) {
    const total = (s.balance?.confirmed || 0) + (s.balance?.unconfirmed || 0);
    $("balMain").textContent = fmtBig(total);
    $("balTicker").textContent = s.meta.ticker;
    if (s.balance?.unconfirmed) $("netlbl").textContent += ` · ${fmtBig(s.balance.unconfirmed)} unconfirmed`;
  } else {
    $("balMain").textContent = "—"; $("balTicker").textContent = "";
  }
  if (!ready) return;
  // Chain-specific header adjustments
  document.querySelector("nav [data-tab='settings']").hidden = false;
  // Receive tab
  const addr = s.address || "";
  if ($("addr").textContent !== addr) {
    $("addr").textContent = addr;
    drawQr(chain() === "bch" ? "bitcoincash:" + addr.replace(/^bitcoincash:/, "") : "tron:" + addr);
  }
  $("addrMeta").textContent = s.addressPath ? "· " + s.addressPath : "";
  $("nextAddr").hidden = chain() !== "bch";
  $("openFaucet").hidden = !s.faucet;
  // Send tab: input placeholder + unit picker
  applyUnitPicker();
  // Fee slider only meaningful for BCH
  $("feeField").hidden = chain() !== "bch";
  // History
  renderHistory();
}

function applyUnitPicker() {
  const s = sel(); if (!s) return;
  if (!unit) unit = "big";
  const big = bigUnitLabel(), small = smallUnitLabel();
  $("unitPicker").innerHTML =
    `<button data-u="big" class="${unit === "big" ? "on" : ""}" type="button">${esc(big)}</button>` +
    `<button data-u="small" class="${unit === "small" ? "on" : ""}" type="button">${esc(small)}</button>`;
  $("unitPicker").querySelectorAll("button").forEach((b) => b.addEventListener("click", () => setUnit(b.dataset.u)));
  $("sendTo").placeholder = chain() === "bch" ? "bitcoincash:q… or legacy 1…" : "T… (base58check, 34 chars)";
  $("sendAmt").placeholder = unit === "big" ? "0.00" : "0";
}
function setUnit(u) {
  if (u === unit) return;
  const s = amountUnits();
  unit = u;
  applyUnitPicker();
  if (s) $("sendAmt").value = unit === "big" ? fmtBig(s) : String(s);
}
function amountUnits() {
  const raw = $("sendAmt").value.trim().replace(/,/g, "");
  if (!raw) return 0;
  if (unit === "small") return Math.round(Number(raw));
  const d = decimals();
  const [w, f = ""] = raw.split(".");
  const frac = (f + "0".repeat(d)).slice(0, d);
  return Number(w || 0) * Math.pow(10, d) + Number(frac || 0);
}

// ---- history ---------------------------------------------------------------

function renderHistory() {
  const s = sel();
  const list = s?.history || [];
  const el = $("txlist");
  if (!list.length) { el.innerHTML = `<div class="empty">${s?.scanning ? "Syncing…" : "No transactions yet."}</div>`; return; }
  el.innerHTML = list.map((t) => {
    const inc = t.delta >= 0;
    const when = t.time ? new Date(t.time * 1000).toLocaleString(undefined, { dateStyle: "medium", timeStyle: "short" }) : "pending";
    const who = inc ? (t.from ? "from " + shortAddr(t.from) : "") : (t.to ? "to " + shortAddr(t.to) : "");
    const what = (inc ? "Received" : "Sent") + (who ? " " + who : "");
    const conf = t.confirmations > 0 ? (t.confirmations >= 6 ? "confirmed" : t.confirmations + " conf") : (t.status === "failed" ? "failed" : "unconfirmed");
    const delta = Math.abs(t.delta || 0);
    return `<div class="tx" data-txid="${esc(t.txid)}" title="${esc(t.txid)}">
      <div class="ic ${inc ? "in" : "out"}">${inc ? "↓" : "↑"}</div>
      <div class="what">${esc(what)}</div>
      <div class="amt2 ${inc ? "in" : ""}">${inc ? "+" : "−"}${delta ? fmtBig(delta) : "—"}</div>
      <div class="when">${esc(when)}${t.fee != null ? " · fee " + fmtSmall(t.fee) + " " + smallUnitLabel() : ""}</div>
      <div class="conf ${t.confirmations > 0 ? (t.status === "failed" ? "pending" : "") : "pending"}">${esc(conf)}</div>
    </div>`;
  }).join("");
  el.querySelectorAll(".tx").forEach((row) => row.addEventListener("click", () => openUrl(sel().explorerTx + row.dataset.txid)));
}
function shortAddr(a) {
  if (!a) return "";
  const s = String(a).replace(/^bitcoincash:/, "");
  return esc(s.slice(0, 10)) + "…" + esc(s.slice(-4));
}

// ---- QR --------------------------------------------------------------------

function drawQr(text) {
  const cv = $("qr");
  const g = cv.getContext("2d");
  let q;
  try { q = window.QR.build(text); } catch { g.clearRect(0, 0, cv.width, cv.height); return; }
  const scale = Math.max(2, Math.floor(200 / (q.size + 2)));
  const px = (q.size + 2) * scale;
  cv.width = cv.height = px;
  cv.style.width = cv.style.height = px + "px";
  g.fillStyle = "#fff"; g.fillRect(0, 0, px, px);
  g.fillStyle = "#000";
  for (let r = 0; r < q.size; r++) for (let c = 0; c < q.size; c++) if (q.modules[r][c]) g.fillRect((c + 1) * scale, (r + 1) * scale, scale, scale);
}

// ---- receive actions -------------------------------------------------------

$("copyAddr").addEventListener("click", async () => {
  try { await navigator.clipboard.writeText(sel().address); flash($("copyAddr"), "Copied"); } catch {}
});
$("nextAddr").addEventListener("click", async () => {
  try { const s = await S.invoke("nextAddress"); state.selected = { ...state.selected, ...s }; render(); }
  catch (e) { flash($("nextAddr"), "Failed"); }
});
$("viewAddr").addEventListener("click", () => openUrl(sel().explorerAddr + sel().address));
$("openFaucet").addEventListener("click", () => sel().faucet && openUrl(sel().faucet));
function flash(btn, text) {
  const old = btn.textContent; btn.textContent = text;
  setTimeout(() => { btn.textContent = old; }, 1200);
}

// ---- send ------------------------------------------------------------------

$("sendMax").addEventListener("click", () => {
  sendMax = !sendMax;
  $("sendMax").classList.toggle("primary", sendMax);
  $("sendAmt").disabled = sendMax;
  if (!sendMax) $("sendAmt").value = "";
  schedulePlan();
});
$("feeRate").addEventListener("input", () => { $("feeLbl").textContent = $("feeRate").value + " sat/B"; schedulePlan(); });
["sendTo", "sendAmt"].forEach((id) => $(id).addEventListener("input", () => { if (id === "sendAmt" && sendMax) return; schedulePlan(); }));
function schedulePlan() { clearTimeout(planTimer); planTimer = setTimeout(updatePlan, 250); }
async function updatePlan() {
  const to = $("sendTo").value.trim();
  const msg = $("sendMsg"); msg.hidden = true;
  lastPlan = null; $("sendBtn").disabled = true;
  $("sumAmt").textContent = $("sumFee").textContent = $("sumTotal").textContent = "—";
  $("sendToHint").textContent = "";
  if (!to || (!sendMax && !amountUnits())) return;
  try {
    const feeRate = chain() === "bch" ? Number($("feeRate").value) : undefined;
    const p = await S.invoke("planSend", { to, amount: amountUnits(), feeRate, sendMax });
    lastPlan = p;
    $("sendToHint").textContent = p.recipients[0].to !== to ? "→ " + p.recipients[0].to : "";
    $("sumAmt").textContent = fmtBig(p.recipients[0].value) + " " + ticker();
    $("sumFee").textContent = chain() === "bch"
      ? fmtSmall(p.fee) + " " + smallUnitLabel()
      : fmtBig(p.fee) + " " + ticker();
    $("sumTotal").textContent = fmtBig(p.total) + " " + ticker();
    if (sendMax) $("sendAmt").value = unit === "big" ? fmtBig(p.recipients[0].value) : String(p.recipients[0].value);
    $("sendBtn").disabled = false;
  } catch (e) {
    msg.className = "msg err"; msg.textContent = cleanErr(e); msg.hidden = false;
  }
}
$("sendBtn").addEventListener("click", async () => {
  if (!lastPlan) return;
  const msg = $("sendMsg"); msg.hidden = true;
  $("sendBtn").disabled = true; $("sendBtn").textContent = "Waiting for approval…";
  try {
    const feeRate = chain() === "bch" ? Number($("feeRate").value) : undefined;
    const r = await S.invoke("send", { to: $("sendTo").value.trim(), amount: amountUnits(), feeRate, sendMax });
    msg.className = "msg ok";
    msg.innerHTML = `Sent. <a class="link" data-tx="${esc(r.txid)}">${esc(r.txid.slice(0, 16))}…</a>`;
    msg.querySelector("a").addEventListener("click", () => openUrl(sel().explorerTx + r.txid));
    msg.hidden = false;
    $("sendTo").value = ""; $("sendAmt").value = ""; sendMax = false;
    $("sendMax").classList.remove("primary"); $("sendAmt").disabled = false;
    lastPlan = null;
  } catch (e) {
    const t = cleanErr(e);
    if (t !== "cancelled") { msg.className = "msg err"; msg.textContent = t; msg.hidden = false; }
    $("sendBtn").disabled = !lastPlan;
  } finally { $("sendBtn").textContent = "Send"; }
});

// ---- settings --------------------------------------------------------------

function fillSettings() {
  const s = sel(); if (!s) return;
  $("bchSettings").hidden = chain() !== "bch";
  $("trxSettings").hidden = chain() !== "trx";
  $("removeBtn").disabled = !!s.isLegacy;
  $("removeHint").textContent = s.isLegacy ? "The default BCH wallet cannot be removed (it protects legacy funds)." : "";
  $("renameLabel").value = s.label || "";
  if (chain() === "bch") {
    if (!settingsFilled) {
      $("setPath").value = s.accountPath || "";
      $("setServers").value = (state.bchServers?.list || []).join("\n");
      settingsFilled = true;
    }
    $("serverHint").textContent = (state.bchServers?.custom ? "Custom list." : "Bundled defaults.") + (s.server ? " Connected to " + hostOf(s.server) + "." : " Not connected.");
    $("purpose").textContent = "silentmode/addons/" + (s.purpose || "");
  } else if (chain() === "trx") {
    $("trxPurpose").textContent = "silentmode/addons/" + (s.purpose || "");
  }
  renderSites();
}
async function renderSites() {
  let perms = {};
  try { perms = await S.invoke("permissions"); } catch {}
  const origins = Object.keys(perms).filter((o) => {
    const p = perms[o];
    return p && (p.readAddress || p.sendTx || (p.trx && p.trx.readAddress));
  });
  const el = $("sites");
  if (!origins.length) { el.innerHTML = `<div class="hint">None yet.</div>`; return; }
  el.innerHTML = origins.map((o) => {
    const p = perms[o]; const what = [];
    if (p.readAddress) what.push("BCH address");
    if (p.sendTx) what.push(`BCH payments: ${fmtBig(Math.max(0, p.sendTx.capSats - (p.sendTx.usedSats || 0)), 8)} of ${fmtBig(p.sendTx.capSats, 8)} BCH left`);
    if (p.trx && p.trx.readAddress) what.push("Tron " + (p.trx.network === "nile" ? "Nile testnet" : "mainnet") + " address");
    return `<div class="tx" style="grid-template-columns:1fr auto;cursor:default"><div><div class="mono">${esc(o)}</div><div class="hint">${esc(what.join(" · "))}</div></div><button class="btn sm" data-origin="${esc(o)}">Revoke</button></div>`;
  }).join("");
  el.querySelectorAll("button[data-origin]").forEach((b) => b.addEventListener("click", async () => {
    try { await S.invoke("revoke", { origin: b.dataset.origin }); renderSites(); } catch {}
  }));
}

$("applySettings").addEventListener("click", async () => {
  const msg = $("settingsMsg"); msg.hidden = true;
  try {
    const path = $("setPath").value.trim();
    const servers = $("setServers").value.split(/\n+/).map((s) => s.trim()).filter(Boolean);
    // Apply path (per-wallet) and servers (shared) separately.
    if (path && path !== (sel().accountPath || "")) {
      state = await S.invoke("setAccountPath", { id: state.selectedWalletId, accountPath: path });
    }
    const currentJoined = (state.bchServers?.list || []).join();
    if (state.bchServers?.custom || servers.join() !== currentJoined) {
      state = await S.invoke("setBchServers", { servers });
    }
    settingsFilled = false; fillSettings(); render();
    flash($("applySettings"), "Applied");
  } catch (e) { msg.textContent = cleanErr(e); msg.hidden = false; }
});
$("resetServers").addEventListener("click", async () => {
  try { state = await S.invoke("setBchServers", { servers: [] }); settingsFilled = false; fillSettings(); render(); }
  catch (e) { $("settingsMsg").textContent = cleanErr(e); $("settingsMsg").hidden = false; }
});
$("renameBtn").addEventListener("click", async () => {
  const label = $("renameLabel").value.trim();
  if (!label) return;
  try { state = await S.invoke("renameWallet", { id: state.selectedWalletId, label }); render(); flash($("renameBtn"), "Renamed"); }
  catch (e) { $("settingsMsg").textContent = cleanErr(e); $("settingsMsg").hidden = false; }
});
$("removeBtn").addEventListener("click", async () => {
  const s = sel(); if (!s || s.isLegacy) return;
  if (!confirm(`Remove the wallet "${s.label}"?\n\nThe on-chain address stays; the wallet is unlinked from Aegis. You can add it back later by creating a new wallet on the same chain.`)) return;
  try { state = await S.invoke("removeWallet", { id: state.selectedWalletId }); settingsFilled = false; render(); }
  catch (e) { $("settingsMsg").textContent = cleanErr(e); $("settingsMsg").hidden = false; }
});
$("showXpub").addEventListener("click", async () => {
  try { const r = await S.invoke("recovery", { id: state.selectedWalletId }); $("recovery").innerHTML = recoveryHtml(r); }
  catch (e) { $("recovery").textContent = cleanErr(e); }
});
$("showXprv").addEventListener("click", async () => {
  try { const r = await S.invoke("recovery", { id: state.selectedWalletId, reveal: true }); $("recovery").innerHTML = recoveryHtml(r); }
  catch (e) { $("recovery").textContent = cleanErr(e); }
});
function recoveryHtml(r) {
  let h = `<div class="lbl">Account path</div><div class="mono">${esc(r.accountPath)}</div><div class="lbl">Account xpub</div><div class="mono">${esc(r.xpub)}</div>`;
  if (r.xprv) h += `<div class="lbl">Account private key (xprv)</div><div class="mono" style="color:var(--danger)">${esc(r.xprv)}</div>`;
  return h;
}
// Wipe a revealed key when the user leaves the Settings tab.
document.querySelectorAll("nav button").forEach((b) => b.addEventListener("click", () => { if (b.dataset.tab !== "settings") $("recovery").innerHTML = ""; }));

// ---- boot ------------------------------------------------------------------
S.on("state", (s) => { state = s; render(); if (tab === "settings") fillSettings(); });
(async () => {
  try { state = await S.invoke("state"); render(); }
  catch (e) { $("gate").hidden = false; $("gate").innerHTML = `<div class="big">⚠</div><div>${esc(cleanErr(e))}</div>`; }
})();