// Traffic Desk client — pick size, pick approved creative, pick destination,
// launch. Balance and running campaigns come from the server.
(function () {
  'use strict';
  var $ = function (id) { return document.getElementById(id); };
  var state = { size: null, creative: null, target: 'join', creatives: {}, remaining: 0, id: null };
  var busy = false;

  function chip(label, on, fn) {
    var b = document.createElement('button');
    b.type = 'button';
    b.className = 'tf-chip' + (on ? ' on' : '');
    b.textContent = label;
    b.addEventListener('click', fn);
    return b;
  }

  function renderSizes(sizes) {
    var host = $('tfSizes');
    host.innerHTML = '';
    sizes.forEach(function (s) {
      host.appendChild(chip(s, s === state.size, function () {
        state.size = s;
        state.creative = (state.creatives[s] || [])[0] || null;
        renderSizes(sizes); renderCreatives();
      }));
    });
  }

  function renderCreatives() {
    var host = $('tfCreatives');
    host.innerHTML = '';
    (state.creatives[state.size] || []).forEach(function (f) {
      var d = document.createElement('div');
      d.className = 'tf-cre' + (f === state.creative ? ' on' : '');
      var img = document.createElement('img');
      img.src = '/banners/' + f;
      img.alt = 'Team banner ' + state.size;
      img.loading = 'lazy';
      d.appendChild(img);
      d.addEventListener('click', function () { state.creative = f; renderCreatives(); });
      host.appendChild(d);
    });
  }

  function renderTargets() {
    var host = $('tfTargets');
    host.innerHTML = '';
    host.appendChild(chip('My invite page', state.target === 'join', function () {
      state.target = 'join'; renderTargets();
    }));
    if (state.hasPage) {
      host.appendChild(chip('My personal page', state.target === 'page', function () {
        state.target = 'page'; renderTargets();
      }));
    } else {
      // Don't let anyone point an ad at a page that doesn't exist yet.
      var d = document.createElement('span');
      d.className = 'tf-hint';
      d.style.cssText = 'margin:0;align-self:center';
      d.innerHTML = 'Want to send traffic to your own page instead? <a href="/suite/page" style="color:var(--gold);font-weight:700">Build it first →</a>';
      host.appendChild(d);
    }
  }

  function gate(msg) {
    $('tfGate').style.display = 'block';
    $('tfGate').innerHTML = msg;
    $('tfCard').style.opacity = '.55';
    $('tfGo').disabled = true;
  }

  function renderLive(campaigns, live) {
    if (!campaigns.length) { $('tfLiveWrap').style.display = 'none'; return; }
    var byId = {};
    (live || []).forEach(function (l) { byId[l.ad_id] = l; });
    var tb = $('tfLive');
    tb.innerHTML = '';
    campaigns.slice().reverse().forEach(function (c) {
      var l = byId[c.adId] || {};
      var tr = document.createElement('tr');
      var served = l.served != null ? l.served : 0;
      var statusCell = c.stopped
        ? 'stopped <span style="opacity:.7">(' + Number(c.refunded || 0).toLocaleString() + ' returned)</span>'
        : (l.live ? '<span style="color:var(--teal)">running</span>' : 'finished');
      tr.innerHTML = '<td><b>' + c.size + '</b></td>' +
        '<td>' + (c.target.indexOf('/p/') !== -1 ? 'personal page' : 'invite page') + '</td>' +
        '<td>' + Number(c.bought != null ? c.bought : c.impressions).toLocaleString() + '</td>' +
        '<td><b>' + Number(c.stopped ? (c.served || 0) : served).toLocaleString() + '</b></td>' +
        '<td>' + (c.stopped ? '—' : (l.remaining != null ? Number(l.remaining).toLocaleString() : '—')) + '</td>' +
        '<td>' + (l.hits != null ? l.hits : '—') + '</td>' +
        '<td>' + statusCell + '</td>';
      var act = document.createElement('td');
      if (!c.stopped && l.live) {
        var btn = document.createElement('button');
        btn.className = 'btn btn-secondary btn-sm';
        btn.textContent = 'Stop';
        btn.title = 'Stop this banner and return the unserved impressions to your balance';
        btn.addEventListener('click', function () { stopCampaign(c.adId, btn); });
        act.appendChild(btn);
      }
      tr.appendChild(act);
      tb.appendChild(tr);
    });
    $('tfLiveWrap').style.display = 'block';
  }

  function applyStatus(d) {
    var st = d.status;
    state.creatives = st.creatives || {};
    state.id = d.id;
    state.remaining = st.remaining;
    if (typeof d.hasPage === 'boolean') state.hasPage = d.hasPage;
    if (!state.hasPage && state.target === 'page') state.target = 'join';
    if (!state.size) state.size = (st.sizes || [])[0] || null;
    if (!state.creative) state.creative = (state.creatives[state.size] || [])[0] || null;
    $('tfBal').style.display = 'flex';
    $('tfRemain').textContent = Number(st.remaining).toLocaleString();
    $('tfLimit').textContent = Number(st.limit).toLocaleString();
    $('tfNote').innerHTML = 'Level ' + d.level + ' includes <b style="color:var(--text)">' +
      Number(st.limit).toLocaleString() + '</b> impressions a month on the network. Each upgrade raises it — Apex is where it jumps to 50,000.';
    $('tfImp').max = st.remaining;
    $('tfImp').value = Math.min(Number($('tfImp').value) || st.remaining, st.remaining) || 100;
    renderSizes(st.sizes || []); renderCreatives(); renderTargets();
    renderLive(st.campaigns || [], d.live || []);
    if (st.remaining <= 0) {
      $('tfGo').disabled = true;
      $('tfGo').textContent = 'Allowance used — refills on the 1st';
    }
  }

  async function stopCampaign(adId, btn) {
    if (btn) { btn.disabled = true; btn.textContent = 'Stopping…'; }
    try {
      var r = await fetch('/api/public/suite-traffic-stop', {
        method: 'POST', headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ ad_id: adId })
      });
      var d = await r.json();
      if (!r.ok) {
        $('tfErr').textContent = d.error || 'Could not stop that banner.';
        $('tfErr').style.display = 'block';
        if (btn) { btn.disabled = false; btn.textContent = 'Stop'; }
        return;
      }
      $('tfOk').innerHTML = '✅ <b>Banner stopped.</b> ' +
        Number(d.stopped.refunded).toLocaleString() + ' unserved impressions went back into your balance' +
        (d.stopped.served ? ' — it had served ' + Number(d.stopped.served).toLocaleString() + '.' : '.');
      $('tfOk').style.display = 'block';
      boot();
    } catch (e) {
      $('tfErr').textContent = 'Connection hiccup — try again.';
      $('tfErr').style.display = 'block';
      if (btn) { btn.disabled = false; btn.textContent = 'Stop'; }
    }
  }

  async function boot() {
    try {
      var r = await fetch('/api/public/suite-traffic');
      if (r.status === 401) { gate('You’re not signed in yet. <a href="/suite" style="color:var(--gold);font-weight:700">Open the Suite</a> and connect the wallet that holds your position, then come back.'); return; }
      if (r.status === 403) { gate('The Traffic Desk isn’t open for this position yet. <a href="/suite" style="color:var(--gold);font-weight:700">See your Suite</a>.'); return; }
      if (!r.ok) return;
      var d = await r.json();
      if (!d.configured) { gate('The ad network bridge is being finalized — this opens shortly.'); return; }
      applyStatus(d);
    } catch (e) {}
  }

  async function run() {
    if (busy) return;
    busy = true;
    $('tfErr').style.display = 'none';
    $('tfOk').style.display = 'none';
    $('tfGo').disabled = true;
    $('tfGo').innerHTML = '<span class="spin"></span>Launching on the network…';
    try {
      var r = await fetch('/api/public/suite-traffic', {
        method: 'POST', headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          size: state.size, creative: state.creative, target: state.target,
          impressions: Number($('tfImp').value) || 0
        })
      });
      var d = await r.json();
      if (!r.ok) {
        $('tfErr').textContent = d.error || 'That didn’t go through — try again.';
        $('tfErr').style.display = 'block';
      } else {
        $('tfOk').innerHTML = '✅ <b>Your banner is live on the network.</b><br>' +
          Number(d.campaign.impressions).toLocaleString() + ' impressions of ' + d.campaign.size +
          ' pointed at your ' + (d.campaign.target.indexOf('/p/') !== -1 ? 'personal page' : 'invite page') +
          '. It starts rotating immediately — check back here to watch it serve.';
        $('tfOk').style.display = 'block';
        applyStatus({ status: d.status, level: 0, id: state.id, live: [], configured: true });
        // refresh from the server so the running-banners table picks it up
        setTimeout(boot, 800);
      }
    } catch (e) {
      $('tfErr').textContent = 'Connection hiccup — try again.';
      $('tfErr').style.display = 'block';
    }
    busy = false;
    if (state.remaining > 0) { $('tfGo').disabled = false; $('tfGo').textContent = '🚦 Launch my banner'; }
  }

  document.addEventListener('DOMContentLoaded', function () {
    boot();
    $('tfGo').addEventListener('click', run);
  });
})();