{{ $lang := .Page.Language.Lang }}
{{ $countries := hugo.Data.countries }}

<style>
.ifk-charts { margin: 2rem 0; }
.ifk-charts h3 { text-align: center; margin-bottom: 1.5rem; font-size: 1.25rem; }
.ifk-chart-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.ifk-chart-card {
  background: #fafbfc; border: 1px solid #e2e8f0; border-radius: 10px;
  padding: 1.25rem; text-align: center;
}
.ifk-chart-card h4 { margin: 0 0 1rem; font-size: 0.95rem; color: #334155; }
.ifk-chart-card canvas { max-height: 280px; }
@media (max-width: 640px) {
  .ifk-chart-grid { grid-template-columns: 1fr; }
}
</style>

<div class="ifk-charts">
  <h3>{{ if eq $lang "de" }}Analyse der Kinderschutzgesetze{{ else if eq $lang "fr" }}Analyse des lois de protection{{ else }}Child Protection Law Analysis{{ end }}</h3>
  <div class="ifk-chart-grid">
    <div class="ifk-chart-card">
      <h4>{{ if eq $lang "de" }}Gesetzgebungsstatus{{ else if eq $lang "fr" }}Statut législatif{{ else }}Legislative Status{{ end }}</h4>
      <canvas id="ifk-chart-status"></canvas>
    </div>
    <div class="ifk-chart-card">
      <h4>{{ if eq $lang "de" }}Mindestalter für soziale Medien{{ else if eq $lang "fr" }}Âge minimum réseaux sociaux{{ else }}Social Media Age Limits{{ end }}</h4>
      <canvas id="ifk-chart-age"></canvas>
    </div>
    <div class="ifk-chart-card" style="grid-column: 1 / -1;">
      <h4>{{ if eq $lang "de" }}Zeitachse der Gesetzgebung{{ else if eq $lang "fr" }}Chronologie législative{{ else }}Legislation Timeline{{ end }}</h4>
      <canvas id="ifk-chart-timeline"></canvas>
    </div>
  </div>
</div>

<script src="{{ "js/chart.umd.min.js" | relURL }}"></script>
<script>
window.addEventListener('load', function() {
  var LANG = "{{ $lang }}";
  var countries = {{ $countries | jsonify }};

  var statusLabels = {
    en: { enforced: 'Enforced', passed: 'Passed', progress: 'In Progress', guidelines: 'Guidelines' },
    de: { enforced: 'In Kraft', passed: 'Verabschiedet', progress: 'In Bearbeitung', guidelines: 'Richtlinien' },
    fr: { enforced: 'En vigueur', passed: 'Adopté', progress: 'En cours', guidelines: 'Directives' }
  };
  var labels = statusLabels[LANG] || statusLabels.en;

  /* Pie: status distribution */
  var counts = { enforced: 0, passed: 0, progress: 0, guidelines: 0 };
  countries.forEach(function(c) { counts[c.status]++; });

  new Chart(document.getElementById('ifk-chart-status'), {
    type: 'doughnut',
    data: {
      labels: [labels.enforced, labels.passed, labels.progress, labels.guidelines],
      datasets: [{
        data: [counts.enforced, counts.passed, counts.progress, counts.guidelines],
        backgroundColor: ['#1e40af', '#3b82f6', '#93c5fd', '#dbeafe'],
        borderWidth: 2, borderColor: '#fff'
      }]
    },
    options: {
      responsive: true,
      plugins: {
        legend: { position: 'bottom', labels: { padding: 16, usePointStyle: true } }
      }
    }
  });

  /* Horizontal bar: age limits */
  var sorted = countries.slice().sort(function(a, b) { return b.ageLimitSocial - a.ageLimitSocial; });
  var colors = { enforced: '#1e40af', passed: '#3b82f6', progress: '#93c5fd', guidelines: '#dbeafe' };

  new Chart(document.getElementById('ifk-chart-age'), {
    type: 'bar',
    data: {
      labels: sorted.map(function(c) { return c.flag + ' ' + (c[LANG] || c.en).name; }),
      datasets: [{
        label: LANG === 'de' ? 'Mindestalter' : LANG === 'fr' ? 'Âge minimum' : 'Min. Age',
        data: sorted.map(function(c) { return c.ageLimitSocial; }),
        backgroundColor: sorted.map(function(c) { return colors[c.status]; }),
        borderRadius: 4
      }]
    },
    options: {
      indexAxis: 'y', responsive: true,
      scales: {
        x: { min: 0, max: 20, title: { display: true, text: LANG === 'de' ? 'Jahre' : LANG === 'fr' ? 'Ans' : 'Years' } }
      },
      plugins: { legend: { display: false } }
    }
  });

  /* Bar: timeline by year */
  var yearCounts = {};
  countries.forEach(function(c) {
    if (!yearCounts[c.year]) yearCounts[c.year] = { enforced: 0, passed: 0, progress: 0, guidelines: 0 };
    yearCounts[c.year][c.status]++;
  });
  var years = Object.keys(yearCounts).sort();

  new Chart(document.getElementById('ifk-chart-timeline'), {
    type: 'bar',
    data: {
      labels: years,
      datasets: [
        { label: labels.enforced, data: years.map(function(y) { return yearCounts[y].enforced; }), backgroundColor: '#1e40af', borderRadius: 4 },
        { label: labels.passed, data: years.map(function(y) { return yearCounts[y].passed; }), backgroundColor: '#3b82f6', borderRadius: 4 },
        { label: labels.progress, data: years.map(function(y) { return yearCounts[y].progress; }), backgroundColor: '#93c5fd', borderRadius: 4 },
        { label: labels.guidelines, data: years.map(function(y) { return yearCounts[y].guidelines; }), backgroundColor: '#dbeafe', borderRadius: 4 }
      ]
    },
    options: {
      responsive: true,
      scales: {
        x: { stacked: true }, y: { stacked: true, beginAtZero: true, ticks: { stepSize: 1 } }
      },
      plugins: { legend: { position: 'bottom', labels: { padding: 16, usePointStyle: true } } }
    }
  });
});
</script>