"use strict";

/* ── The Hub dashboard chrome ──────────────────────────────────────
   Category navigation, service search, status widgets, and the
   Systems Operational modal (router ports 80/443 + the live domain
   diagnostics checklist).

   Everything lives in an IIFE so no globals leak into the other
   Hub scripts; tiles.js calls window.dashboardServicesUpdated()
   whenever the service list refreshes. */

(function () {

  var $nav = document.getElementById("sidebar-nav");
  var $pageTitle = document.getElementById("page-title");
  var $widgets = document.getElementById("widgets");
  var $search = document.getElementById("search-input");
  var $sysModal = document.getElementById("systems-modal");
  var $sysBody = document.getElementById("systems-body");

  var _cat = "all";
  var _query = "";

  var CAT_ICONS = {
    "all":            "g-grid",
    "infrastructure": "g-server",
    "bitcoin-base":   "g-btc-sym",
    "bitcoin-apps":   "g-btc-sym",
    "communication":  "g-chat",
    "apps":           "g-dots",
    "nostr":          "g-antenna",
    "other":          "g-dots"
  };

  var CAT_FALLBACK_LABELS = {
    "infrastructure": "Infrastructure",
    "bitcoin-base":   "Bitcoin",
    "bitcoin-apps":   "Bitcoin Apps",
    "communication":  "Communication",
    "apps":           "Personal Apps",
    "nostr":          "Nostr",
    "other":          "Other"
  };

  /* Units that serve a domain — used to find a live diagnostics
     checklist for the Systems Operational modal (order matters only
     for which service is polled first). */
  var DOMAIN_UNITS = [
    "matrix-synapse.service",
    "btcpayserver.service",
    "vaultwarden.service",
    "phpfpm-nextcloud.service",
    "phpfpm-wordpress.service",
    "haven-relay.service",
    "livekit.service",
    "albyhub.service"
  ];

  function icon(id) {
    return '<svg><use href="#' + id + '"/></svg>';
  }

  function visibleServices() {
    var services = (typeof _servicesCache !== "undefined" && _servicesCache) ? _servicesCache : [];
    return services.filter(function (s) {
      return s.category !== "support" && s.type !== "support";
    });
  }

  /* ── Category navigation ─────────────────────────────────────── */

  function renderNav() {
    if (!$nav) return;
    var counts = {};
    var order = [];
    visibleServices().forEach(function (s) {
      var cat = s.category || "other";
      if (!counts[cat]) { counts[cat] = 0; order.push(cat); }
      counts[cat]++;
    });
    var total = visibleServices().length;

    var html = '<div class="nav-label">Services</div>';
    html += navItem("all", "All services", total);
    order.forEach(function (cat) {
      html += navItem(cat, catLabel(cat), counts[cat]);
    });
    $nav.innerHTML = html;

    $nav.querySelectorAll(".nav-item").forEach(function (btn) {
      btn.addEventListener("click", function () {
        _cat = btn.dataset.cat;
        $nav.querySelectorAll(".nav-item").forEach(function (b) {
          b.classList.toggle("active", b === btn);
        });
        if ($pageTitle) {
          $pageTitle.textContent = _cat === "all" ? "Dashboard" : catLabel(_cat);
        }
        applyFilter();
      });
    });
  }

  function navItem(cat, label, count) {
    return '<button class="nav-item' + (cat === _cat ? " active" : "") + '" data-cat="' + escHtml(cat) + '" type="button">' +
      icon(CAT_ICONS[cat] || "g-dots") +
      '<span class="nav-text">' + escHtml(label) + '</span>' +
      '<span class="nav-count">' + count + '</span>' +
      '</button>';
  }

  function catLabel(cat) {
    if (typeof _categoryLabels !== "undefined" && _categoryLabels[cat]) return _categoryLabels[cat];
    return CAT_FALLBACK_LABELS[cat] || cat;
  }

  /* ── Filtering (category + search, applied together) ─────────── */

  function applyFilter() {
    var area = document.getElementById("tiles-area");
    if (!area) return;
    var q = _query.trim().toLowerCase();
    area.querySelectorAll(".category-section").forEach(function (section) {
      var catMatch = (_cat === "all") || (section.dataset.category === _cat);
      var anyVisible = false;
      section.querySelectorAll(".service-tile").forEach(function (tile) {
        var nameEl = tile.querySelector(".tile-name");
        var name = nameEl ? nameEl.textContent.toLowerCase() : "";
        var match = catMatch && (!q || name.indexOf(q) !== -1);
        tile.style.display = match ? "" : "none";
        if (match) anyVisible = true;
      });
      section.style.display = (catMatch && (anyVisible || !q)) ? "" : "none";
    });
  }

  if ($search) {
    $search.addEventListener("input", function () {
      _query = $search.value;
      applyFilter();
    });
  }

  /* ── Status widgets ──────────────────────────────────────────── */

  function renderWidgets() {
    if (!$widgets) return;
    var services = visibleServices();
    if (!services.length) { $widgets.style.display = "none"; return; }

    var running = 0, attention = 0, off = 0;
    services.forEach(function (s) {
      if (!s.enabled) { off++; return; }
      var h = s.health || s.status;
      if (h === "needs_attention" || h === "failed") attention++;
      else running++;
    });

    var html = "";

    /* Systems operational */
    var sub = '<b>' + running + '</b> running';
    if (attention) sub += ' · <span class="warn">' + attention + ' needs attention</span>';
    if (off) sub += ' · ' + off + ' off';
    var attentionTitle = attention ? "Systems need attention" : "Systems operational";
    html +=
      '<div class="widget clickable" id="w-systems" role="button" tabindex="0" title="System status and router setup">' +
        '<div class="widget-chip chip-green">' + icon("g-shield-check") + '</div>' +
        '<div class="w-body"><h3>' + attentionTitle + '</h3><div class="sub">' + sub + '</div></div>' +
        '<span class="w-chev">' + icon("g-chev") + '</span>' +
      '</div>';

    /* Bitcoin Core sync */
    var btc = null;
    services.forEach(function (s) {
      if (s.sync_ibd && s.enabled) btc = s;
    });
    if (btc) {
      var pct = Math.round((btc.sync_progress || 0) * 100);
      var blocks = btc.sync_blocks ? btc.sync_blocks.toLocaleString() : "—";
      var eta = (typeof _calcBtcEta === "function") ? _calcBtcEta(btc.unit + "::" + btc.name, btc.sync_progress || 0) : "";
      html +=
        '<div class="widget clickable" id="w-btc" role="button" tabindex="0" title="' + escHtml(btc.name) + ' details">' +
          '<div class="widget-chip chip-btc"><img src="/static/icons/' + escHtml(btc.icon) + '.svg" alt="" style="width:46px;height:46px;display:block;object-fit:contain"/></div>' +
          '<div class="w-body"><h3>' + escHtml(btc.name) + ' — syncing timechain</h3>' +
          '<div class="w-bar"><div class="w-bar-fill" style="width:' + pct + '%"></div></div>' +
          '<div class="sub">Block <b>' + blocks + '</b> · ' + pct + '% · <span class="warn">' + escHtml(eta) + '</span></div></div>' +
          '<span class="w-chev">' + icon("g-chev") + '</span>' +
        '</div>';
    }

    $widgets.innerHTML = html;
    $widgets.style.display = "";

    var wSys = document.getElementById("w-systems");
    if (wSys) {
      wSys.addEventListener("click", openSystemsModal);
      wSys.addEventListener("keydown", function (e) { if (e.key === "Enter") openSystemsModal(); });
    }
    var wBtc = document.getElementById("w-btc");
    if (wBtc && btc) {
      (function (svc) {
        wBtc.addEventListener("click", function () { openServiceDetailModal(svc.unit, svc.name, svc.icon); });
        wBtc.addEventListener("keydown", function (e) { if (e.key === "Enter") openServiceDetailModal(svc.unit, svc.name, svc.icon); });
      })(btc);
    }
  }

  /* ── Systems Operational modal ───────────────────────────────── */

  function internalIp() {
    var el = document.getElementById("ip-internal");
    var v = el ? el.textContent.trim() : "";
    return (v && v !== "…" && v !== "—") ? v : "";
  }

  function step(n, title, sub, value) {
    return '<div class="sysstep"><div class="sysnum">' + n + '</div><div class="sysstep-x">' +
      '<div class="sysstep-t">' + title + (sub ? ' <span class="sysstep-sub">· ' + sub + '</span>' : '') + '</div>' +
      (value ? '<div class="sysval"><span class="sysval-text">' + value + '</span></div>' : '') +
      '</div></div>';
  }

  function isNodeRole() {
    return (typeof _currentRole !== "undefined" && _currentRole === "node");
  }

  function hasEnabledDomainService(services) {
    return DOMAIN_UNITS.some(function (u) {
      return services.some(function (s) { return s.unit === u && s.enabled; });
    });
  }

  function whoUsesPorts() {
    if (isNodeRole()) {
      return 'On this <strong>Bitcoin Node</strong> install, <strong>BTCPay Server</strong> and <strong>Lightning Wallet Connections (LNURL)</strong> are the domain services that use these ports.';
    }
    return 'All your domain services share ports 80 and 443 — Matrix, BTCPay Server, VaultWarden, Nextcloud, WordPress, Haven Relay, Lightning Wallet Connections, and Element Calling.';
  }

  function openSystemsModal() {
    if (!$sysModal || !$sysBody) return;
    var services = visibleServices();
    var running = 0, attention = 0, off = 0;
    var attentionNames = [], offNames = [];
    services.forEach(function (s) {
      if (!s.enabled) { off++; offNames.push(s.name); return; }
      var h = s.health || s.status;
      if (h === "needs_attention" || h === "failed") { attention++; attentionNames.push(s.name); }
      else running++;
    });

    var ip = internalIp();
    var fwd = ip ? ('\u2192 ' + escHtml(ip)) : "forward to this computer";

    var html = "";

    /* System status */
    html += '<div class="sysmodal-card">' +
      '<div class="sysmodal-card-title">' + icon("g-shield-check") + 'System Status</div>' +
      step(1, "Services running", "", String(running)) +
      step(2, "Needs attention", "", attention ? escHtml(attentionNames.join(", ")) : "None") +
      step(3, "Turned off", "", off ? escHtml(offNames.join(", ")) : "None") +
      '</div>';

    /* Router ports — repo wording (domain-prereqs.js / server.py).
       Node-only role: ports matter only once BTCPay Server or Lightning
       Wallet Connections (LNURL) is turned on — until then, no router task. */
    if (isNodeRole() && !hasEnabledDomainService(services)) {
      html += '<div class="sysmodal-card">' +
        '<div class="sysmodal-card-title">' + icon("g-wifi") + 'Router</div>' +
        '<div class="sysnote"><div class="sysnote-title">' + icon("g-check") + 'No router setup needed yet</div>' +
        '<div class="sysnote-desc">Ports 80 and 443 only need to be forwarded on your router if you turn on <strong>BTCPay Server</strong> or <strong>Lightning Wallet Connections (LNURL)</strong>. If you enable one of them, come back here — this card will show exactly what to do.</div></div>' +
        '</div>';
    } else {
      html += '<div class="sysmodal-card">' +
        '<div class="sysmodal-card-title">' + icon("g-wifi") + 'Router — Ports to Forward</div>' +
        step(1, "Port 80", "TCP — HTTP (redirect to HTTPS)", fwd) +
        step(2, "Port 443", "TCP — HTTPS", fwd) +
        '<div class="sysnote"><div class="sysnote-title">' + icon("g-alert") + 'One router task</div>' +
        '<div class="sysnote-desc">Set the internal and external port to the <strong>same number</strong>. You only need to do this once — all your services share these two ports.</div></div>' +
        '</div>';
    }

    /* Live domain diagnostics (sequential checklist from the backend —
       same data the domain-service modals show) */
    html += '<div class="sysmodal-card" id="sys-check-card" style="display:none">' +
      '<div class="sysmodal-card-title">' + icon("g-check") + 'Ports 80 &amp; 443 Check</div>' +
      '<div id="sys-check-steps"><div class="sysfineprint">Checking…</div></div>' +
      '</div>';

    /* Who uses these ports (redundant on a Node install with no domain
       services on — the router note above already covers it) */
    if (!isNodeRole() || hasEnabledDomainService(services)) {
      html += '<div class="sysnote" style="margin-top:14px">' +
        '<div class="sysnote-title">' + icon("g-antenna") + 'Who uses these ports</div>' +
        '<div class="sysnote-desc">' + whoUsesPorts() + '</div></div>';
    }

    $sysBody.innerHTML = html;
    $sysModal.classList.add("open");

    /* Poll the first configured domain service for its live checklist */
    var checkCard = document.getElementById("sys-check-card");
    var stepsEl = document.getElementById("sys-check-steps");
    var units = DOMAIN_UNITS.filter(function (u) {
      return services.some(function (s) { return s.unit === u && s.enabled; });
    });
    if (!units.length || !checkCard || !stepsEl) return;
    checkCard.style.display = "";

    apiFetch("/api/service-detail/" + encodeURIComponent(units[0]))
      .then(function (data) {
        var steps = (data && data.domain_check_steps) || [];
        if (!steps.length) { checkCard.style.display = "none"; return; }
        var mark = { ok: "\u2705", error: "\u274c", warning: "\u26a0\ufe0f", skipped: "\u23ed\ufe0f" };
        var html2 = "";
        steps.forEach(function (st) {
          var m = mark[st.status] || "\u2014";
          var detail = escHtml(st.detail || "").replace(/\n/g, "<br>");
          html2 += '<div class="sysstep"><div class="sysnum">' + st.step + '</div><div class="sysstep-x">' +
            '<div class="sysstep-t">' + m + " " + escHtml(st.label || "") + '</div>' +
            (detail ? '<div class="sysstep-t" style="font-weight:400;color:var(--text-2);font-size:0.77rem;margin-top:3px">' + detail + '</div>' : '') +
            '</div></div>';
        });
        stepsEl.innerHTML = html2;
      })
      .catch(function () {
        checkCard.style.display = "none";
      });
  }

  function closeSystemsModal() {
    if ($sysModal) $sysModal.classList.remove("open");
  }

  var sysClose = document.getElementById("systems-close-btn");
  if (sysClose) sysClose.addEventListener("click", closeSystemsModal);
  if ($sysModal) {
    $sysModal.addEventListener("click", function (e) {
      if (e.target === $sysModal) closeSystemsModal();
    });
    $sysModal.addEventListener("keydown", function (e) {
      if (e.key === "Escape") closeSystemsModal();
    });
  }

  /* ── Public hook for tiles.js ────────────────────────────────── */

  window.dashboardServicesUpdated = function () {
    renderNav();
    renderWidgets();
    applyFilter();
  };

})();