{% extends "base.html" %}
{% block title %}Capture · {{ project.name }}{% endblock %}
{% block body %}
{% set active_tab = 'capture' %}
{% include '_project_tabs.html' %}

<div x-data='captureApp({
        project: {{ project.name|tojson }},
        captures: {{ captures|tojson }}
     })'>

  <div class="banner info" x-show="connected===false" x-cloak>
    No camera detected on the server — capture is disabled. Connect a camera to the Pi, or
    <a href="{{ url_for('run_page', name=project.name) }}">run CTT</a> on existing images.
  </div>

  <!-- Top row: preview (2/3) + details (1/3) -->
  <div class="grid" style="grid-template-columns: 2fr 1fr; gap: 20px; align-items: start">
    <!-- Left: preview + sensor details (fills the space under the viewfinder) -->
    <div class="grid" style="align-content:start">
      <div class="card tight">
        <div class="preview-wrap" :class="{ louping: loupe.active }" @dragstart.prevent
             @pointerdown="loupeStart($event)" @pointermove="loupeMove($event)"
             @pointerup="loupeEnd($event)" @pointerleave="loupeEnd($event)" @pointercancel="loupeEnd($event)">
          <img id="previewImg" draggable="false" x-show="connected" :src="connected ? ('{{ url_for('api_preview') }}' + (previewTick ? ('?t=' + previewTick) : '')) : ''" alt="camera preview">
          <canvas id="macbethOverlay" class="overlay" x-show="connected" x-cloak></canvas>
          <div id="loupeMarker" class="loupe-marker" x-show="loupe.active" x-cloak></div>
          <canvas id="loupeCanvas" class="loupe" width="220" height="220" x-show="loupe.active" x-cloak></canvas>
          <div class="mac-chip" :class="macbethState()"
               x-show="connected && form.image_type==='macbeth'" x-cloak>
            <span x-text="{ok: '✓', warn: '!', bad: '✗'}[macbethState()]"></span> Macbeth
            <span x-show="macbeth.found" x-text="macbeth.confidence"></span>
            <span x-show="macbeth.small">· too small</span>
            <span x-show="macbeth.saturated">· clipping</span>
          </div>
          <div class="placeholder" x-show="!connected" x-cloak>Live preview appears here when a camera is available on the server.</div>
        </div>
      </div>
      <div class="caminfo" x-show="connected" x-cloak>
        <div class="caminfo-row" style="grid-template-columns: repeat(5, 1fr)">
          <div><span class="k">Sensor</span><span class="v" x-text="camera.model || '—'"></span></div>
          <div><span class="k">Resolution</span><span class="v" x-text="camera.resolution ? camera.resolution[0] + ' × ' + camera.resolution[1] : '—'"></span></div>
          <div>
            <span class="k">Flips</span>
            <div class="seg compact" style="align-self:flex-start">
              <button type="button" :class="{active: hflip}" @click="hflip=!hflip; applyTransform()" title="Horizontal flip">H</button>
              <button type="button" :class="{active: vflip}" @click="vflip=!vflip; applyTransform()" title="Vertical flip">V</button>
            </div>
          </div>
          <div>
            <span class="k">FPS <span style="text-transform:none" x-text="metered.measured_fps ? '· ' + metered.measured_fps + ' actual' : ''"></span> <span class="fps-warn" x-show="fpsUnachievable()" x-cloak :title="'Not achievable in this sensor mode (max ' + fpsMax().toFixed(1) + ' fps) — auto-exposure can use up to the actual frame time'">⚠</span></span>
            <input type="number" min="0" max="120" step="1" x-model.number="fpsTarget" @change="applyFps()"
                   title="Fixed framerate; 0 = unconstrained (variable frame duration, allows long exposures)"
                   style="width:90px; padding:4px 8px; font-size:0.85rem">
          </div>
        </div>
        <div class="caminfo-row" style="grid-template-columns: repeat(5, 1fr)">
          <div><span class="k">Exposure</span><span class="v" x-text="(metered.exposure/1000).toFixed(1) + ' ms'"></span></div>
          <div><span class="k">Gain</span><span class="v" x-text="metered.gain + '×'"></span></div>
          <div><span class="k">Colour temp</span><span class="v" x-text="metered.colour_temp + ' K'"></span></div>
          <div><span class="k">Lux</span><span class="v" x-text="metered.lux + ' lx'"></span></div>
          <div><span class="k">Focus FoM</span><span class="v" x-text="metered.focus_fom"></span></div>
        </div>
      </div>
    </div>

    <!-- Right: histogram + exposure -->
    <div class="grid" style="align-content:start">
      <div class="card" x-show="connected" x-cloak>
        <div class="card-head"><h2>Histogram</h2></div>
        <div class="hist"><canvas id="histCanvas" width="520" height="90"></canvas></div>
        <div class="clip-readout mt">
          <span>clipping&nbsp; R <b :class="{hot: clip.r>0.01}" x-text="pct(clip.r)"></b></span>
          <span>G <b :class="{hot: clip.g>0.01}" x-text="pct(clip.g)"></b></span>
          <span>B <b :class="{hot: clip.b>0.01}" x-text="pct(clip.b)"></b></span>
        </div>
      </div>

      <div class="card" x-show="connected" x-cloak>
        <div class="card-head"><h2>Exposure</h2>
          <label class="flex" style="margin:0;font-weight:600">
            <input type="checkbox" style="width:auto" x-model="controls.auto_exposure" @change="applyControls()"> Auto
          </label>
        </div>
        <div class="field" :style="controls.auto_exposure ? 'opacity:.45;pointer-events:none' : ''">
          <label>Exposure time — <span x-text="(controls.exposure/1000).toFixed(1)"></span> ms
            <span class="muted" x-show="expMax()" x-cloak>(max <span x-text="(expMax()/1000).toFixed(0)"></span> ms at this FPS)</span></label>
          <input type="range" :min="controls.exposure_min" :max="expMax()" step="100"
                 x-model.number="controls.exposure" @change="applyControls()">
        </div>
        <div class="field" :style="controls.auto_exposure ? 'opacity:.45;pointer-events:none' : ''">
          <label>Analogue gain — <span x-text="controls.gain"></span>×</label>
          <input type="range" :min="controls.gain_min" :max="controls.gain_max" step="0.1"
                 x-model.number="controls.gain" @change="applyControls()">
        </div>
        <div class="field" :style="!controls.auto_exposure ? 'opacity:.45;pointer-events:none' : ''">
          <div class="spread" style="align-items:baseline">
            <label style="margin:0">Exposure compensation — <span x-text="controls.ev.toFixed(1)"></span> EV</label>
            <button type="button" class="btn sm ghost" @click="controls.ev = 0; applyControls()">Reset</button>
          </div>
          <input type="range" min="-8" max="8" step="0.1" x-model.number="controls.ev" @change="applyControls()">
          <div class="hint">Biases auto-exposure brighter/darker (active when Auto is on).</div>
        </div>
      </div>
    </div>
  </div>

  <!-- Full width: lightbox (shown only when a device is present) -->
  <div class="card mt" x-show="lightbox.present" x-cloak>
    <div class="card-head">
      <h2>Lightbox</h2>
      <span class="chip" x-text="lightbox.model + (lightbox.serial ? ' · ' + lightbox.serial : '')"></span>
    </div>
    <div class="field-row" style="align-items:flex-end; flex-wrap:wrap">
      <div class="field" style="flex:0 0 240px; margin:0">
        <label>Illuminant</label>
        <select x-model.number="lightbox.channel" @change="setIlluminant()">
          <template x-for="[ch, name] in Object.entries(lightbox.illuminants)" :key="ch">
            <option :value="Number(ch)" x-text="ch + ' — ' + name"
                      :title="(lightbox.illuminant_labels && lightbox.illuminant_labels[ch]) || name"></option>
          </template>
        </select>
      </div>
      <div class="field" style="flex:1 1 260px; margin:0">
        <label>Intensity</label>
        <div class="flex" style="gap:10px; align-items:center; margin:0">
          <input type="range" min="0" max="100" step="1" class="lb-slider" x-model.number="lightbox.intensity"
                 @change="applyLightbox()" :style="{ '--fill': (lightbox.intensity || 0) + '%', flex: '1' }">
          <input type="number" min="0" max="100" step="1" class="nospin" x-model.number="lightbox.intensity"
                 @change="applyLightbox()" style="width:72px; flex:0 0 auto">
          <span class="muted">%</span>
        </div>
      </div>
      <div class="field" style="flex:0 0 auto; margin:0">
        <button type="button" class="btn ghost" @click="lightboxOff()">Off</button>
      </div>
    </div>
  </div>

  <!-- Full width: tag & capture -->
  <div class="card mt">
    <div class="card-head"><h2>Tag &amp; capture</h2></div>
    <div class="field-row" style="align-items:flex-end; flex-wrap:wrap">
      <div class="field" style="flex:0 0 auto; margin:0">
        <label>Image type</label>
        <div class="seg">
          <button type="button" :class="{active: form.image_type==='macbeth'}" @click="form.image_type='macbeth'">Macbeth</button>
          <button type="button" :class="{active: form.image_type==='alsc'}" @click="form.image_type='alsc'">ALSC</button>
          <button type="button" :class="{active: form.image_type==='cac'}" @click="form.image_type='cac'">CAC</button>
          <button type="button" :class="{active: form.image_type==='dark'}" @click="form.image_type='dark'">Dark</button>
        </div>
      </div>
      <div class="field" x-show="form.image_type!=='dark'" style="flex:0 0 150px; margin:0">
        <label>Colour temp (K)</label>
        <input type="number" x-model.number="form.colour_temp" min="1000" max="12000" step="50">
      </div>
      <div class="field" x-show="form.image_type==='macbeth'" style="flex:0 0 130px; margin:0">
        <label>Lux</label>
        <input type="number" x-model.number="form.lux" min="1" step="1">
      </div>
      <div class="field" style="flex:0 0 100px; margin:0">
        <label title="Frames captured per shot, saved as indexed files; CTT averages each burst internally">Burst</label>
        <input type="number" x-model.number="form.frames" min="1" max="16" step="1">
      </div>
      <div class="field" style="flex:0 0 auto; margin:0">
        <button class="btn primary" :disabled="!connected || busy" @click="capture()">
          <span x-text="busy ? 'Capturing…' : '● Capture'"></span>
        </button>
      </div>
    </div>
    <div class="hint mt">
      Filename preview: <code x-text="previewName()"></code>
      <span x-show="form.image_type==='macbeth'"> · Macbeth chart — needs colour temp + lux.</span>
      <span x-show="form.image_type==='alsc'"> · Defocused, uniform flat field — colour temp only.</span>
      <span x-show="form.image_type==='cac'"> · Chromatic-aberration dot chart (PiSP) — colour temp only.</span>
      <span x-show="form.image_type==='dark'"> · Lens cap on, completely dark — no tags. Capture several at different shutter/gain settings to map black level vs exposure.</span>
    </div>
    <div class="banner error mt" x-show="error" x-text="error" x-cloak></div>
  </div>

  <!-- Full width: coverage checklist -->
  <div class="card mt">
    <div class="card-head">
      <h2>Coverage checklist</h2>
      <span class="hint" style="margin:0">Captured images (<span x-text="captures.length"></span>) are managed on the
        <a href="{{ url_for('images_page', name=project.name) }}">Images</a> tab.</span>
    </div>
    <div class="stats mt" style="margin-top:0">
      <div class="stat"><div class="n" x-text="counts.macbeth"></div><div class="l">Macbeth</div></div>
      <div class="stat"><div class="n" x-text="counts.alsc"></div><div class="l">ALSC</div></div>
      <div class="stat"><div class="n" x-text="counts.cac"></div><div class="l">CAC</div></div>
      <div class="stat"><div class="n" x-text="counts.dark"></div><div class="l">Dark</div></div>
    </div>
    <ul class="checklist mt">
      <template x-for="item in checklist()" :key="item.key">
        <li :class="{done: item.done}">
          <span class="tick">✓</span>
          <span x-text="item.label"></span>
          <span class="count" x-text="item.detail"></span>
        </li>
      </template>
    </ul>
  </div>

</div>
{% endblock %}
{% block scripts %}
<script src="{{ url_for('static', filename='vendor/alpine.min.js') }}" defer></script>
{% endblock %}