window.AnalyticsCharts = (function () {
  var charts = {};
  var colors = {
    gold: 'rgba(252, 211, 77, 0.85)', cyan: 'rgba(56, 189, 248, 0.85)',
    green: 'rgba(74, 222, 128, 0.85)', red: 'rgba(251, 113, 133, 0.85)',
    purple: 'rgba(168, 85, 247, 0.85)', orange: 'rgba(255, 159, 67, 0.85)',
    gray: 'rgba(159, 176, 196, 0.85)', grid: 'rgba(159, 176, 196, 0.12)', text: '#c8d4e0',
  };
  var palette = [colors.gold, colors.cyan, colors.green, colors.purple, colors.orange, colors.red, colors.gray];

  function destroyAll() {
    Object.keys(charts).forEach(function (k) {
      if (charts[k]) { charts[k].destroy(); charts[k] = null; }
    });
  }

  function barChart(id, labels, values, label, horizontal) {
    var canvas = document.getElementById(id);
    if (!canvas || typeof Chart === 'undefined') return;
    if (charts[id]) charts[id].destroy();
    charts[id] = new Chart(canvas, {
      type: 'bar',
      data: {
        labels: labels,
        datasets: [{ label: label, data: values, backgroundColor: palette.slice(0, labels.length), borderRadius: 6 }],
      },
      options: {
        indexAxis: horizontal ? 'y' : 'x',
        responsive: true,
        plugins: { legend: { display: false } },
        scales: {
          x: { ticks: { color: colors.text, maxRotation: 45 }, grid: { color: colors.grid } },
          y: { ticks: { color: colors.text }, grid: { color: colors.grid } },
        },
      },
    });
  }

  function doughnut(id, labels, values) {
    var canvas = document.getElementById(id);
    if (!canvas || typeof Chart === 'undefined') return;
    if (charts[id]) charts[id].destroy();
    charts[id] = new Chart(canvas, {
      type: 'doughnut',
      data: { labels: labels, datasets: [{ data: values, backgroundColor: palette, borderWidth: 0 }] },
      options: { responsive: true, plugins: { legend: { position: 'bottom', labels: { color: colors.text, boxWidth: 12 } } } },
    });
  }

  function lineChart(id, labels, values) {
    var canvas = document.getElementById(id);
    if (!canvas || typeof Chart === 'undefined') return;
    if (charts[id]) charts[id].destroy();
    charts[id] = new Chart(canvas, {
      type: 'line',
      data: {
        labels: labels,
        datasets: [{ data: values, borderColor: colors.cyan, backgroundColor: 'rgba(56,189,248,0.15)', fill: true, tension: 0.3 }],
      },
      options: {
        responsive: true,
        plugins: { legend: { display: false } },
        scales: {
          x: { ticks: { color: colors.text }, grid: { color: colors.grid } },
          y: { ticks: { color: colors.text }, grid: { color: colors.grid } },
        },
      },
    });
  }

  function renderKpis(container, kpis) {
    if (!container || !kpis) return;
    var items = [
      ['Klanten totaal', kpis.clients_total], ['Actieve klanten', kpis.clients_active],
      ['Pipeline €', '€' + Math.round(kpis.pipeline_eur || 0).toLocaleString('nl-NL')],
      ['Supermarkten', kpis.supermarkets], ['Groothandels', kpis.wholesalers],
      ['CRM actief', kpis.crm_partnerships], ['RSS items', kpis.rss_items],
      ['Bookmarks', kpis.rss_bookmarks], ['Promo's', kpis.promo_campaigns],
      ['Agent events', kpis.agent_events], ['Goedkeuringen', kpis.pending_approvals],
      ['Contacten SM', kpis.contacts_supermarket], ['NAS docs', kpis.nas_docs],
    ];
    container.innerHTML = items.map(function (it) {
      return '<div class="kpi-card"><span>' + it[0] + '</span><strong>' + it[1] + '</strong></div>';
    }).join('');
  }

  function renderTables(data) {
    var dealsEl = document.getElementById('analytics-deals-table');
    var eventsEl = document.getElementById('analytics-events-table');
    if (dealsEl) {
      dealsEl.innerHTML = (data.recent_deals || []).map(function (d) {
        return '<tr><td>' + (d.title || '—') + '</td><td>' + (d.stage || '') + '</td><td>€' + Math.round(Number(d.value || 0)).toLocaleString('nl-NL') + '</td></tr>';
      }).join('') || '<tr><td colspan="3">Geen deals</td></tr>';
    }
    if (eventsEl) {
      eventsEl.innerHTML = (data.recent_events || []).map(function (e) {
        var t = (e.created_at || '').substring(0, 16).replace('T', ' ');
        return '<tr><td>' + (e.agent_name || '') + '</td><td>' + (e.title || e.event_type || '') + '</td><td>' + t + '</td></tr>';
      }).join('') || '<tr><td colspan="3">Geen events</td></tr>';
    }
  }

  function render(data) {
    if (!data) return;
    renderKpis(document.getElementById('analytics-kpis'), data.kpis);
    barChart('chart-deals', (data.deals_by_stage || []).map(function (r) { return r.stage; }),
      (data.deals_by_stage || []).map(function (r) { return Number(r.total || r.cnt || 0); }), 'EUR');
    barChart('chart-clients', (data.clients_by_stage || []).map(function (r) { return r.stage; }),
      (data.clients_by_stage || []).map(function (r) { return Number(r.cnt || 0); }), 'Klanten');
    barChart('chart-chains', (data.supermarkets_by_chain || []).map(function (r) { return r.chain; }),
      (data.supermarkets_by_chain || []).map(function (r) { return Number(r.cnt || 0); }), 'Filialen');
    doughnut('chart-provinces', (data.supermarkets_by_province || []).map(function (r) { return r.province; }),
      (data.supermarkets_by_province || []).map(function (r) { return Number(r.cnt || 0); }));
    doughnut('chart-partnerships', (data.partnership_breakdown || []).map(function (r) { return r.status; }),
      (data.partnership_breakdown || []).map(function (r) { return Number(r.cnt || 0); }));
    barChart('chart-agents', (data.events_by_agent || []).map(function (r) { return r.agent_name; }),
      (data.events_by_agent || []).map(function (r) { return Number(r.cnt || 0); }), 'Events', true);
    lineChart('chart-timeline', (data.events_timeline || []).map(function (r) { return String(r.day || '').substring(5); }),
      (data.events_timeline || []).map(function (r) { return Number(r.cnt || 0); }));
    doughnut('chart-rss', (data.rss_by_category || []).map(function (r) { return r.category || 'other'; }),
      (data.rss_by_category || []).map(function (r) { return Number(r.cnt || 0); }));
    barChart('chart-wholesale', (data.wholesalers_by_province || []).map(function (r) { return r.province; }),
      (data.wholesalers_by_province || []).map(function (r) { return Number(r.cnt || 0); }), 'GH');
    doughnut('chart-sentiment', (data.sentiment_distribution || []).map(function (r) { return r.sentiment_label || 'neutral'; }),
      (data.sentiment_distribution || []).map(function (r) { return Number(r.cnt || 0); }));
    barChart('chart-words', (data.top_words || []).slice(0, 10).map(function (r) { return r.lemma; }),
      (data.top_words || []).slice(0, 10).map(function (r) { return Number(r.total || 0); }), 'Count', true);
    barChart('chart-opportunities', (data.top_opportunities || []).map(function (r) { return (r.chain || '') + ' ' + (r.city || ''); }),
      (data.top_opportunities || []).map(function (r) { return Math.round(Number(r.halal_opportunity_score || 0)); }), 'Score', true);
    barChart('chart-promo', (data.promo_by_chain || []).map(function (r) { return r.chain || '?'; }),
      (data.promo_by_chain || []).map(function (r) { return Number(r.cnt || 0); }), 'Promo');
    doughnut('chart-milestones', (data.milestones_by_status || []).map(function (r) { return r.status; }),
      (data.milestones_by_status || []).map(function (r) { return Number(r.cnt || 0); }));
    renderTables(data);
  }

  return { render: render, destroyAll: destroyAll };
})();

function analyticsHub() {
  return {
    loading: false,
    updatedAt: '—',
    liveLabel: 'Live',
    f: { chain: '', province: '', stage: '', agent: '', days: 90 },
    meta: {},
    _pollStop: null,
    init() {
      var initial = window.ANALYTICS_INITIAL || {};
      this.meta = initial.filter_meta || {};
      AnalyticsCharts.render(initial);
      this.updatedAt = (initial.generated_at || '').substring(0, 19).replace('T', ' ');
      this._pollStop = CockpitLive.startPolling(function () { return this.refresh(false); }.bind(this), 30000);
    },
    params() {
      var p = new URLSearchParams();
      Object.entries(this.f).forEach(function (e) {
        if (e[1] !== null && e[1] !== '' && e[1] !== undefined) p.set(e[0], e[1]);
      });
      return p.toString();
    },
    async refresh(toast) {
      this.loading = true;
      try {
        var data = await fetch('/analytics/api/data?' + this.params()).then(function (r) { return r.json(); });
        this.meta = data.filter_meta || this.meta;
        AnalyticsCharts.render(data);
        this.updatedAt = (data.generated_at || '').substring(0, 19).replace('T', ' ');
        if (toast !== false) Cockpit.toast('Analytics bijgewerkt', 'success');
      } catch (e) {
        if (toast !== false) Cockpit.toast(e.message, 'error');
      } finally {
        this.loading = false;
      }
    },
    resetFilters() {
      this.f = { chain: '', province: '', stage: '', agent: '', days: 90 };
      this.refresh();
    },
  };
}