<script lang="ts">
  import { createEventDispatcher } from 'svelte';

  export let recommendation: any = null;
  export let hasEnoughData: boolean;
  export let isShortForm: boolean;

  const dispatch = createEventDispatcher<{
    switchToLongForm: void;
  }>();

  let isExpanded = false;

  function toggleExpanded() {
    isExpanded = !isExpanded;
  }

  function handleSwitchToLongForm() {
    dispatch('switchToLongForm');
    isExpanded = false;
  }

  // Determine status: 'good' (green) or 'warning' (yellow/orange)
  $: status = recommendation?.recommendedForm === 'long' ? 'warning' : 'good';
  $: showIndicator = hasEnoughData && isShortForm && recommendation;
</script>

{#if showIndicator}
  <div class="form-recommendation" class:expanded={isExpanded}>
    <button
      class="indicator"
      class:good={status === 'good'}
      class:warning={status === 'warning'}
      on:click={toggleExpanded}
      aria-label="Data quality indicator"
      title={status === 'good' ? 'Short form working well' : 'Long form recommended'}
    >
      <span class="light"></span>
    </button>

    {#if isExpanded}
      <div class="panel-backdrop" on:click={toggleExpanded} on:keydown={() => {}} role="button" tabindex="-1">
        <div class="details-panel" on:click|stopPropagation on:keydown={() => {}} role="dialog" aria-modal="true">
          <div class="panel-header">
            <h3>Data Quality Assessment</h3>
            <button class="close-btn" on:click={toggleExpanded} aria-label="Close">+</button>
          </div>

        <div class="panel-body">
          <div class="metric">
            <span class="metric-label">Classification Confidence:</span>
            <span class="metric-value" class:low={recommendation.confidence < 60}>
              {recommendation.confidence}%
            </span>
          </div>

          <div class="metric">
            <span class="metric-label">Data Completeness:</span>
            <span class="metric-value" class:low={recommendation.completeness < 50}>
              {recommendation.completeness}% ({recommendation.dimensionsProvided}/{recommendation.dimensionsTotal} dimensions)
            </span>
          </div>

          <div class="metric">
            <span class="metric-label">Key Dimensions:</span>
            <span class="metric-value" class:low={recommendation.coverage < 75}>
              {recommendation.coverage}% ({recommendation.keyDimensionsProvided}/{recommendation.keyDimensionsTotal})
            </span>
          </div>

          <div class="classification">
            <div class="classification-label">Current Classification:</div>
            <div class="classification-value">
              <strong>{recommendation.clusterName}</strong>
              {#if recommendation.distanceToBoundary < 0.5}
                <span class="boundary-warning">(Near boundary)</span>
              {/if}
            </div>
          </div>

          {#if recommendation.recommendedForm === 'long'}
            <div class="recommendation-message warning">
              <strong>⚠ Long Form Recommended</strong>
              <p>
                {#if recommendation.confidence < 60}
                  • Low classification confidence<br>
                {/if}
                {#if recommendation.completeness < 50}
                  • Incomplete data (less than 50% of dimensions)<br>
                {/if}
                {#if recommendation.distanceToBoundary < 0.5}
                  • Protocol near boundary between families<br>
                {/if}
                {#if recommendation.coverage < 75}
                  • Missing key dimensions for reliable short-form classification<br>
                {/if}
              </p>
              <button class="switch-btn" on:click={handleSwitchToLongForm}>
                Switch to Long Form & Restart →
              </button>
              <p class="note">Returns to the beginning. All your current values will be preserved.</p>
            </div>
          {:else}
            <div class="recommendation-message good">
              <strong>✓ Short Form Working Well</strong>
              <p>
                Your current data provides {recommendation.confidence}% confidence classification.
                Continue with short form or switch to long form for more detailed analysis.
              </p>
            </div>
          {/if}
        </div>
        </div>
      </div>
    {/if}
  </div>
{/if}

<style>
  .form-recommendation {
    position: relative;
    display: flex;
    align-items: center;
  }

  .indicator {
    width: 2rem;
    height: 2rem;
    border-radius: 3px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    padding: 0;
    opacity: 0.4;
    min-height: auto;
    flex-shrink: 0;
  }

  .indicator:hover {
    opacity: 0.8;
    transform: scale(1.05);
  }

  .light {
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    transition: all 0.3s ease;
  }

  .indicator.good .light {
    background: #4ade80;
    box-shadow: 0 0 8px rgba(74, 222, 128, 0.5);
  }

  .indicator.warning .light {
    background: #fbbf24;
    box-shadow: 0 0 8px rgba(251, 191, 36, 0.5);
    animation: pulse 2s ease-in-out infinite;
  }

  @keyframes pulse {
    0%, 100% {
      opacity: 1;
    }
    50% {
      opacity: 0.5;
    }
  }

  .panel-backdrop {
    /* Hidden on desktop - only visible on mobile */
    display: none;
  }

  .details-panel {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    width: 400px;
    max-width: calc(100vw - 2rem);
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.2s ease-out;
    z-index: 1000;
  }

  @keyframes slideIn {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
  }

  .panel-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: bold;
  }

  .close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--fg-color);
    opacity: 0.6;
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: auto;
  }

  .close-btn:hover {
    opacity: 1;
    background: none;
  }

  .panel-body {
    padding: 1rem;
    max-height: 70vh;
    overflow-y: auto;
  }

  .metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
  }

  .metric-label {
    font-weight: 500;
  }

  .metric-value {
    font-weight: bold;
    color: #4ade80;
  }

  .metric-value.low {
    color: #fbbf24;
  }

  .classification {
    margin: 1rem 0;
    padding: 0.75rem;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
  }

  .classification-label {
    font-size: 0.85rem;
    opacity: 0.8;
    margin-bottom: 0.5rem;
  }

  .classification-value {
    font-size: 1rem;
  }

  .classification-value strong {
    color: var(--fg-color);
  }

  .boundary-warning {
    color: #fbbf24;
    font-size: 0.85rem;
    font-style: italic;
  }

  .recommendation-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 4px;
    border: 2px solid;
  }

  .recommendation-message.good {
    background: rgba(74, 222, 128, 0.1);
    border-color: #4ade80;
  }

  .recommendation-message.warning {
    background: rgba(251, 191, 36, 0.1);
    border-color: #fbbf24;
  }

  .recommendation-message strong {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 1rem;
  }

  .recommendation-message p {
    margin: 0.5rem 0;
    font-size: 0.85rem;
    line-height: 1.6;
  }

  .switch-btn {
    width: 100%;
    margin-top: 1rem;
    padding: 0.75rem;
    font-size: 1rem;
    font-weight: bold;
    background: #fbbf24;
    color: #1a1a2e;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
  }

  .switch-btn:hover {
    background: #f59e0b;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(251, 191, 36, 0.3);
  }

  .note {
    font-size: 0.75rem;
    font-style: italic;
    opacity: 0.7;
    margin-top: 0.5rem;
  }

  @media (max-width: 768px) {
    .indicator {
      width: 1.5rem;
      height: 1.5rem;
    }

    .light {
      width: 0.75rem;
      height: 0.75rem;
    }

    /* Modal-like on mobile */
    .panel-backdrop {
      display: flex;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-color: rgba(0, 0, 0, 0.7);
      justify-content: center;
      align-items: center;
      z-index: 2000;
      padding: 1rem;
    }

    .details-panel {
      position: relative;
      top: auto;
      right: auto;
      width: 100%;
      max-width: 500px;
      max-height: 85vh;
      display: flex;
      flex-direction: column;
    }

    .panel-body {
      overflow-y: auto;
      flex: 1;
    }

    .panel-header h3 {
      font-size: 0.9rem;
    }

    .metric {
      font-size: 0.85rem;
    }
  }
</style>
