{% extends "base.html" %}
{% from "macros.html" import panel %}

{% block title %}Voice Settings{% endblock %}
{% block extra_styles %}{% endblock %}

{% block content %}
<div class="voice-settings-page py-3">
  {% call panel("VOICE SETTINGS") %}
  <form id="voice-settings-form">

    <div class="vs-field">
      <label class="vs-label" for="rate-slider">
        SPEED &mdash; <span class="vs-value" id="rate-val">{{ settings.rate }}</span> WPM
      </label>
      <input type="range" class="vs-slider" id="rate-slider" name="rate"
             min="50" max="400" step="5" value="{{ settings.rate }}"
             oninput="document.getElementById('rate-val').textContent=this.value">
      <div class="vs-range-labels"><span>Slow</span><span>Fast</span></div>
    </div>

    <div class="vs-field">
      <label class="vs-label" for="vol-slider">
        VOLUME &mdash; <span class="vs-value" id="vol-val">{{ (settings.volume * 100)|int }}</span>%
      </label>
      <input type="range" class="vs-slider" id="vol-slider" name="volume"
             min="0" max="100" step="5" value="{{ (settings.volume * 100)|int }}"
             oninput="document.getElementById('vol-val').textContent=this.value">
      <div class="vs-range-labels"><span>Quiet</span><span>Loud</span></div>
    </div>

    <div class="vs-field">
      <label class="vs-label" for="voice-select">VOICE MODEL</label>
      {% if voices %}
      <select class="vs-select" id="voice-select" name="voice_id">
        <option value="">&#8212; System Default &#8212;</option>
        {% for v in voices %}
        <option value="{{ v.id }}" {% if v.id == settings.voice_id %}selected{% endif %}>
          {{ v.name }}
        </option>
        {% endfor %}
      </select>
      {% else %}
      <div class="vs-unavailable">Server TTS (pyttsx3) unavailable &mdash; preview uses browser speech synthesis</div>
      <input type="hidden" id="voice-select" name="voice_id" value="{{ settings.voice_id }}">
      {% endif %}
    </div>

    <div class="vs-field">
      <label class="vs-label" for="preview-text">PREVIEW TEXT</label>
      <input type="text" class="vs-input" id="preview-text"
             value="Hello, I am Timmy. Your local AI assistant."
             placeholder="Enter text to preview...">
    </div>

    <div class="vs-actions">
      <button type="button" class="vs-btn-preview" id="preview-btn" onclick="previewVoice()">
        &#9654; PREVIEW
      </button>
      <button type="button" class="vs-btn-save" id="save-btn" onclick="saveSettings()">
        SAVE SETTINGS
      </button>
    </div>

  </form>
  {% endcall %}
</div>

<script>
function previewVoice() {
  var text = document.getElementById('preview-text').value.trim() ||
             'Hello, I am Timmy. Your local AI assistant.';
  var rate   = parseInt(document.getElementById('rate-slider').value, 10);
  var volume = parseInt(document.getElementById('vol-slider').value, 10) / 100;

  if (!('speechSynthesis' in window)) {
    McToast.show('Speech synthesis not supported in this browser', 'warn');
    return;
  }

  window.speechSynthesis.cancel();
  var utterance = new SpeechSynthesisUtterance(text);
  // Web Speech API rate: 1.0 ≈ 175 WPM (default)
  utterance.rate   = rate / 175;
  utterance.volume = volume;

  // Best-effort voice match from server selection
  var voiceSelect = document.getElementById('voice-select');
  if (voiceSelect && voiceSelect.value) {
    var selectedText = voiceSelect.options[voiceSelect.selectedIndex].text.toLowerCase();
    var firstWord = selectedText.split(' ')[0];
    var browserVoices = window.speechSynthesis.getVoices();
    var matched = browserVoices.find(function(v) {
      return v.name.toLowerCase().includes(firstWord);
    });
    if (matched) { utterance.voice = matched; }
  }

  window.speechSynthesis.speak(utterance);
  McToast.show('Playing preview\u2026', 'info');
}

async function saveSettings() {
  var rate    = document.getElementById('rate-slider').value;
  var volPct  = parseInt(document.getElementById('vol-slider').value, 10);
  var voiceId = document.getElementById('voice-select').value;

  var body = new URLSearchParams({
    rate:     rate,
    volume:   (volPct / 100).toFixed(2),
    voice_id: voiceId
  });

  try {
    var resp = await fetch('/voice/settings/save', {
      method:  'POST',
      headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
      body:    body.toString()
    });
    var data = await resp.json();
    if (data.saved) {
      McToast.show('Voice settings saved.', 'info');
    } else {
      McToast.show('Failed to save settings.', 'error');
    }
  } catch (e) {
    McToast.show('Error saving settings.', 'error');
  }
}
</script>
{% endblock %}