import { Component, EventEmitter, Input, Output, ViewChild, ElementRef, OnInit, OnChanges, SimpleChanges } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { OpenRouterModel, ReferenceMedia, VideoGenerationConfig, VideoScriptResponse } from '../../models/openrouter.models';

@Component({
  selector: 'app-video-generator',
  standalone: true,
  imports: [CommonModule, FormsModule],
  template: `
    <div class="video-container animate-fade-in">
      <div class="input-card">
        <div class="card-title-row">
          <div>
            <h2 class="section-title">🎬 Generatore Video AI Multi-Modello</h2>
            <p class="section-desc">Genera video cinematografici ad alta fedeltà visiva (Seedance 2.5, Kling v3.0, Veo 3.1, Hailuo, Wan, Sora).</p>
          </div>

          <!-- Mode Selector Switcher -->
          <div class="mode-switcher">
            <button 
              type="button" 
              class="mode-btn" 
              [class.active]="generateMode === 'video'" 
              (click)="generateMode = 'video'">
              📹 Video MP4 (Reale)
            </button>
            <button 
              type="button" 
              class="mode-btn" 
              [class.active]="generateMode === 'script'" 
              (click)="generateMode = 'script'">
              📝 Storyboard Script
            </button>
          </div>
        </div>

        <div class="form-group">
          <div class="label-row">
            <label>Prompt / Descrizione del Video</label>
            <span class="prompt-hint-tag" *ngIf="referenceItems.length > 0">💡 Usa <strong>&#64;</strong> per menzionare una reference (es: <code>&#64;ref1</code>, <code>&#64;ref2</code>)</span>
          </div>
          
          <!-- Tag Insertion Toolbar -->
          <div *ngIf="referenceItems.length > 0" class="tag-toolbar animate-fade-in">
            <span class="toolbar-label">Collega nel Prompt:</span>
            <button 
              *ngFor="let item of referenceItems" 
              type="button" 
              class="ref-tag-pill" 
              (click)="insertTagIntoPrompt(item.tag)" 
              [title]="'Clicca per inserire ' + item.tag + ' nel prompt'">
              <img [src]="item.previewUrl" class="mini-tag-thumb" />
              <strong>{{ item.tag }}</strong>
              <span class="tag-subname">{{ item.name }}</span>
            </button>
          </div>

          <textarea 
            #promptInputArea
            [(ngModel)]="concept" 
            (input)="onPromptInput($event)"
            placeholder="Es: Inizia con @ref1 che cammina in una piazza deserta di notte. Poi la camera ruota su @ref2 in primo piano con illuminazione cinematografica e fumo realistico." 
            rows="4"
            class="input-textarea">
          </textarea>

          <!-- Dropdown autocomplete when typing @ -->
          <div *ngIf="showTagDropdown && referenceItems.length > 0" class="tag-autocomplete-dropdown animate-fade-in">
            <div class="dropdown-header">Seleziona Reference da agganciare:</div>
            <div 
              *ngFor="let item of referenceItems" 
              class="dropdown-item" 
              (click)="selectTagFromDropdown(item.tag)">
              <img [src]="item.previewUrl" class="dropdown-thumb" />
              <div class="dropdown-meta">
                <span class="dropdown-tag font-bold text-accent">{{ item.tag }}</span>
                <span class="dropdown-name">{{ item.name }}</span>
              </div>
            </div>
          </div>
        </div>

        <!-- Reference Images Upload for Video -->
        <div class="form-group">
          <label>Immagini di Riferimento Visivo (Reference Media con tag &#64;)</label>
          <div class="reference-upload-container">
            <input 
              type="file" 
              accept="image/*" 
              multiple 
              #videoFileInput 
              (change)="onReferenceImagesSelected($event)" 
              style="display: none;" 
            />
            <button type="button" class="upload-btn" (click)="videoFileInput.click()">
              📁 Carica Reference (Immagini / Soggetti)
            </button>
            <span class="upload-hint">Ogni file riceverà un tag automatico (<strong>&#64;ref1</strong>, <strong>&#64;ref2</strong>...) agganciabile nel prompt</span>
          </div>

          <div *ngIf="referenceItems.length > 0" class="reference-previews">
            <div *ngFor="let item of referenceItems; let i = index" class="ref-card-wrapper animate-fade-in">
              <div class="ref-thumb-box">
                <img [src]="item.previewUrl" alt="Reference Image" class="ref-thumb" />
                <button type="button" class="remove-ref-btn" (click)="removeReferenceItem(i)">✕</button>
              </div>
              <div class="ref-meta-box">
                <span class="ref-badge-tag" (click)="insertTagIntoPrompt(item.tag)">{{ item.tag }}</span>
                <input 
                  type="text" 
                  [(ngModel)]="item.name" 
                  (change)="updateTagName(item, i)"
                  placeholder="Nome soggetto"
                  class="ref-name-input" 
                  title="Rinomina reference" 
                />
              </div>
            </div>
          </div>
        </div>

        <!-- Options Row -->
        <div class="form-row">
          <div class="form-group half">
            <label>Modello Video AI {{ activeProvider === 'replicate' ? 'Replicate' : 'OpenRouter' }}</label>
            <select [(ngModel)]="selectedModelId" class="select-input">
              <option *ngFor="let model of models" [value]="model.id">
                {{ model.name }}
              </option>
            </select>
          </div>

          <div class="form-group quarter">
            <label>Formato (Aspect Ratio)</label>
            <select [(ngModel)]="aspectRatio" class="select-input">
              <option value="16:9">🖥️ 16:9 (Cinematic Widescreen)</option>
              <option value="9:16">📱 9:16 (Vertical Reels / TikTok)</option>
              <option value="1:1">🔳 1:1 (Quadrato Feed)</option>
            </select>
          </div>

          <div class="form-group quarter">
            <label>Durata Video</label>
            <select [(ngModel)]="duration" class="select-input">
              <option [ngValue]="5">5 Secondi (Clip Rapida)</option>
              <option [ngValue]="10">10 Secondi (Standard)</option>
              <option [ngValue]="15">15 Secondi (Extended)</option>
              <option [ngValue]="30">30 Secondi (Commercial Spot)</option>
            </select>
          </div>
        </div>

        <!-- Cost Estimator Box -->
        <div class="cost-estimator-box">
          <div class="cost-header">
            <span class="cost-title">💳 Preventivo Costo Video:</span>
            <span class="cost-amount">{{ estimatedCostDisplay }}</span>
          </div>
          <p class="cost-details" *ngIf="generateMode === 'video'">
            Tariffa: <strong>\${{ costPerSecond.toFixed(3) }}/sec</strong> &times; <strong>{{ duration }}s</strong> selezionati (Modello: {{ currentModel?.name || selectedModelId }})
          </p>
          <p class="cost-details" *ngIf="generateMode === 'script'">
            Stima token per generazione Storyboard ({{ duration }}s estensione)
          </p>
        </div>

        <button 
          class="generate-btn" 
          (click)="onGenerate()" 
          [disabled]="isGenerating || !concept.trim()">
          <span *ngIf="!isGenerating">
            🎬 {{ generateMode === 'video' ? 'Genera Video Reale MP4' : 'Genera Storyboard Script' }} (Stima: {{ estimatedCostDisplay }})
          </span>
          <span *ngIf="isGenerating" class="spinner-label">
            <span class="spinner"></span> Generazione Video AI in corso...
          </span>
        </button>

        <div *ngIf="isGenerating && videoStatusDetail" class="progress-status-bar animate-fade-in">
          <div class="progress-icon-wrapper">
            <span class="progress-pulse"></span>
          </div>
          <div class="progress-info">
            <span class="progress-stage">{{ videoStatusStageLabel }}</span>
            <span class="progress-detail">{{ videoStatusDetail }}</span>
          </div>
          <span class="progress-elapsed">⏱️ {{ elapsedTimeDisplay }}</span>
        </div>

        <div *ngIf="errorMessage" class="error-banner">
          ⚠️ {{ errorMessage }}
        </div>
      </div>

      <!-- Video Output Result (quando un video è generato) -->
      <div *ngIf="generatedVideoUrl" class="output-card animate-fade-in">
        <div class="output-header">
          <h3 class="output-title">🎬 Video Generato con Successo</h3>
          <a [href]="generatedVideoUrl" download="video-ai.mp4" class="download-video-btn">⬇️ Scarica MP4</a>
        </div>
        <div class="video-player-container">
          <video controls autoplay loop [src]="generatedVideoUrl" class="generated-video-player"></video>
        </div>
      </div>

      <div *ngIf="!generatedVideoUrl && videoContent" class="output-card animate-fade-in">
        <div class="output-header">
          <h3 class="output-title">📹 Esito Generazione Video</h3>
        </div>
        <div class="video-content-text font-mono">
          <pre>{{ videoContent }}</pre>
        </div>
      </div>

      <!-- Storyboard Script Output (se in modalità script) -->
      <div *ngIf="scriptResult && generateMode === 'script'" class="script-card animate-fade-in">
        <div class="script-header">
          <div>
            <h3 class="script-title">🎥 {{ scriptResult.title }}</h3>
            <p class="script-summary">{{ scriptResult.summary }}</p>
          </div>
          <button class="copy-all-btn" (click)="copyFullScript()">📋 Copia Tutto</button>
        </div>

        <div class="scenes-grid">
          <div *ngFor="let scene of scriptResult.scenes" class="scene-box">
            <div class="scene-top">
              <span class="scene-num">Scena {{ scene.sceneNumber }}</span>
              <span class="scene-dur">⏱️ {{ scene.duration }}</span>
              <span class="scene-cam">📹 {{ scene.cameraMovement }}</span>
              <span *ngIf="scene.referenceTag" class="scene-ref-pill">🔗 {{ scene.referenceTag }}</span>
            </div>

            <!-- Attached Reference Media Preview for Scene -->
            <div *ngIf="getSceneReferenceItem(scene)" class="scene-attached-ref animate-fade-in">
              <img [src]="getSceneReferenceItem(scene)?.previewUrl" class="scene-ref-img" />
              <div class="scene-ref-meta">
                <span class="scene-ref-title">Soggetto Reference: {{ getSceneReferenceItem(scene)?.tag }}</span>
                <span class="scene-ref-sub">{{ getSceneReferenceItem(scene)?.name }}</span>
              </div>
            </div>

            <div class="prompt-section">
              <div class="prompt-title-row">
                <span class="label">Visual AI Prompt:</span>
                <button class="copy-btn" (click)="copyToClipboard(scene.visualPrompt)">Copia Prompt</button>
              </div>
              <p class="prompt-content font-mono">{{ scene.visualPrompt }}</p>
            </div>

            <div class="voiceover-section">
              <span class="label">Audio / Voiceover:</span>
              <p class="voiceover-content">🎙️ {{ scene.audioVoiceover }}</p>
            </div>
          </div>
        </div>
      </div>
    </div>
  `,
  styles: [`
    .video-container {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
    }
    .input-card, .output-card, .script-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 1.5rem;
      box-shadow: var(--shadow-card);
    }
    .input-card { display: flex; flex-direction: column; gap: 1.25rem; }
    .card-title-row {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 1rem;
      flex-wrap: wrap;
    }
    .section-title { font-size: 1.25rem; font-weight: 800; }
    .section-desc { font-size: 0.85rem; color: var(--text-muted); }

    .mode-switcher {
      display: flex;
      background: var(--bg-input);
      border: 1px solid var(--border-color);
      padding: 3px;
      border-radius: var(--radius-md);
      gap: 4px;
    }
    .mode-btn {
      background: transparent;
      color: var(--text-muted);
      border: none;
      padding: 0.4rem 0.85rem;
      border-radius: var(--radius-sm);
      font-size: 0.8rem;
      font-weight: 700;
      transition: all 0.2s ease;
    }
    .mode-btn.active {
      background: var(--accent-gradient);
      color: white;
      box-shadow: 0 2px 8px rgba(139, 92, 246, 0.3);
    }

    .form-group { display: flex; flex-direction: column; gap: 0.5rem; }
    .input-textarea, .select-input {
      background: var(--bg-input);
      border: 1px solid var(--border-color);
      color: var(--text-main);
      padding: 0.75rem 1rem;
      border-radius: var(--radius-md);
      width: 100%;
    }
    .form-row { display: flex; gap: 1rem; flex-wrap: wrap; }
    .half { flex: 2; min-width: 260px; }
    .quarter { flex: 1; min-width: 160px; }

    .cost-estimator-box {
      background: rgba(16, 185, 129, 0.1);
      border: 1px solid rgba(16, 185, 129, 0.3);
      padding: 0.85rem 1rem;
      border-radius: var(--radius-md);
      display: flex;
      flex-direction: column;
      gap: 0.25rem;
    }
    .cost-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .cost-title {
      font-size: 0.85rem;
      font-weight: 700;
      color: #6ee7b7;
    }
    .cost-amount {
      font-size: 1rem;
      font-weight: 800;
      color: #34d399;
      font-family: monospace;
    }
    .cost-details {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin: 0;
    }
    .generate-btn {
      background: var(--accent-gradient);
      color: white;
      font-weight: 700;
      padding: 0.9rem 1.5rem;
      border-radius: var(--radius-md);
      font-size: 1rem;
    }
    .generate-btn:disabled { opacity: 0.5; cursor: not-allowed; }

    .reference-upload-container {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .upload-btn {
      background: var(--bg-input);
      border: 1px dashed var(--primary);
      color: var(--text-main);
      padding: 0.5rem 1rem;
      border-radius: var(--radius-md);
      font-size: 0.85rem;
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .upload-btn:hover {
      background: rgba(139, 92, 246, 0.15);
    }
    .upload-hint {
      font-size: 0.75rem;
      color: var(--text-muted);
    }
    .reference-previews {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
      margin-top: 0.5rem;
    }
    .ref-thumb-wrapper {
      position: relative;
      width: 64px;
      height: 64px;
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }
    .ref-thumb {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .remove-ref-btn {
      position: absolute;
      top: 2px;
      right: 2px;
      background: rgba(0, 0, 0, 0.7);
      color: white;
      border: none;
      border-radius: 50%;
      width: 18px;
      height: 18px;
      font-size: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
    }
    .prompt-hint-tag {
      font-size: 0.75rem;
      color: #c084fc;
      background: rgba(192, 132, 252, 0.1);
      padding: 2px 8px;
      border-radius: 9999px;
      border: 1px solid rgba(192, 132, 252, 0.2);
    }
    .tag-toolbar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 0.4rem;
      margin-bottom: 0.5rem;
      padding: 0.4rem 0.6rem;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
    }
    .toolbar-label {
      font-size: 0.75rem;
      color: var(--text-muted);
      font-weight: 600;
    }
    .ref-tag-pill {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      background: rgba(168, 85, 247, 0.15);
      border: 1px solid rgba(168, 85, 247, 0.35);
      color: #e9d5ff;
      font-size: 0.75rem;
      padding: 0.2rem 0.5rem;
      border-radius: 9999px;
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .ref-tag-pill:hover {
      background: rgba(168, 85, 247, 0.35);
      border-color: #c084fc;
      transform: translateY(-1px);
    }
    .mini-tag-thumb {
      width: 16px;
      height: 16px;
      border-radius: 50%;
      object-fit: cover;
    }
    .tag-subname {
      color: var(--text-muted);
      font-size: 0.7rem;
      max-width: 70px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .tag-autocomplete-dropdown {
      position: absolute;
      z-index: 100;
      background: #1e1b4b;
      border: 1px solid #7c3aed;
      border-radius: var(--radius-md);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
      max-height: 200px;
      overflow-y: auto;
      width: 280px;
      margin-top: 4px;
    }
    .dropdown-header {
      font-size: 0.7rem;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      color: #a855f7;
      padding: 0.4rem 0.75rem;
      background: rgba(0,0,0,0.3);
      font-weight: 800;
    }
    .dropdown-item {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      padding: 0.5rem 0.75rem;
      cursor: pointer;
      transition: background 0.15s ease;
    }
    .dropdown-item:hover {
      background: rgba(168, 85, 247, 0.2);
    }
    .dropdown-thumb {
      width: 28px;
      height: 28px;
      border-radius: 4px;
      object-fit: cover;
    }
    .dropdown-meta {
      display: flex;
      flex-direction: column;
    }
    .dropdown-tag {
      font-size: 0.8rem;
      color: #c084fc;
    }
    .dropdown-name {
      font-size: 0.7rem;
      color: var(--text-muted);
    }
    .ref-card-wrapper {
      display: flex;
      flex-direction: column;
      gap: 0.25rem;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 0.4rem;
      width: 100px;
    }
    .ref-thumb-box {
      position: relative;
      width: 100%;
      height: 70px;
      border-radius: 4px;
      overflow: hidden;
    }
    .ref-meta-box {
      display: flex;
      flex-direction: column;
      gap: 0.2rem;
    }
    .ref-badge-tag {
      font-size: 0.7rem;
      font-weight: 800;
      color: #c084fc;
      cursor: pointer;
      text-align: center;
      background: rgba(168, 85, 247, 0.15);
      border-radius: 3px;
      padding: 1px 3px;
    }
    .ref-name-input {
      font-size: 0.65rem;
      background: rgba(0, 0, 0, 0.4);
      border: 1px solid rgba(255, 255, 255, 0.1);
      color: var(--text-main);
      padding: 2px 4px;
      border-radius: 3px;
      width: 100%;
      text-align: center;
    }
    .scene-ref-pill {
      background: rgba(168, 85, 247, 0.2);
      border: 1px solid #a855f7;
      color: #f3e8ff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 2px 6px;
      border-radius: 9999px;
    }
    .scene-attached-ref {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      background: rgba(168, 85, 247, 0.08);
      border: 1px solid rgba(168, 85, 247, 0.25);
      border-radius: var(--radius-sm);
      padding: 0.4rem 0.6rem;
      margin: 0.4rem 0;
    }
    .scene-ref-img {
      width: 36px;
      height: 36px;
      border-radius: 4px;
      object-fit: cover;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .scene-ref-meta {
      display: flex;
      flex-direction: column;
    }
    .scene-ref-title {
      font-size: 0.75rem;
      font-weight: 700;
      color: #e9d5ff;
    }
    .scene-ref-sub {
      font-size: 0.7rem;
      color: var(--text-muted);
    }

    .output-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1rem;
      padding-bottom: 0.75rem;
      border-bottom: 1px solid var(--border-color);
    }
    .output-title { font-size: 1.1rem; font-weight: 800; color: #c084fc; }
    .download-video-btn {
      background: var(--accent-gradient);
      color: white;
      text-decoration: none;
      padding: 0.5rem 1rem;
      border-radius: var(--radius-md);
      font-size: 0.85rem;
      font-weight: 700;
    }
    .video-player-container {
      width: 100%;
      background: #000;
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      justify-content: center;
    }
    .generated-video-player {
      width: 100%;
      max-height: 550px;
      outline: none;
    }

    .error-banner {
      background: rgba(239, 68, 68, 0.15);
      border: 1px solid rgba(239, 68, 68, 0.3);
      color: #fca5a5;
      padding: 0.75rem 1rem;
      border-radius: var(--radius-md);
      font-size: 0.85rem;
    }
    .script-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      padding-bottom: 1rem;
      margin-bottom: 1.5rem;
      border-bottom: 1px solid var(--border-color);
    }
    .script-title { font-size: 1.3rem; font-weight: 800; color: #a78bfa; }
    .script-summary { font-size: 0.9rem; color: var(--text-muted); margin-top: 0.25rem; }
    .copy-all-btn {
      background: var(--bg-input);
      border: 1px solid var(--border-color);
      color: var(--text-main);
      padding: 0.5rem 1rem;
      border-radius: var(--radius-md);
      font-size: 0.85rem;
      font-weight: 600;
    }
    .scenes-grid { display: flex; flex-direction: column; gap: 1.25rem; }
    .scene-box {
      background: var(--bg-input);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.25rem;
      display: flex;
      flex-direction: column;
      gap: 0.85rem;
    }
    .scene-top { display: flex; gap: 1rem; align-items: center; }
    .scene-num {
      background: var(--primary);
      color: white;
      font-weight: 700;
      padding: 0.2rem 0.6rem;
      border-radius: var(--radius-sm);
      font-size: 0.8rem;
    }
    .scene-dur, .scene-cam { font-size: 0.85rem; color: var(--text-muted); }
    .prompt-section { display: flex; flex-direction: column; gap: 0.35rem; }
    .prompt-title-row { display: flex; justify-content: space-between; align-items: center; }
    .label { font-size: 0.8rem; font-weight: 700; color: #9ca3af; text-transform: uppercase; }
    .copy-btn {
      background: rgba(59, 130, 246, 0.15);
      color: #93c5fd;
      border: 1px solid rgba(59, 130, 246, 0.3);
      padding: 0.15rem 0.5rem;
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
    }
    .prompt-content {
      background: rgba(0, 0, 0, 0.4);
      padding: 0.75rem;
      border-radius: var(--radius-sm);
      font-size: 0.85rem;
      color: #e5e7eb;
      border: 1px solid rgba(255,255,255,0.05);
    }
    .voiceover-content { font-size: 0.9rem; color: var(--text-muted); }
    .spinner {
      width: 16px;
      height: 16px;
      border: 2px solid rgba(255,255,255,0.3);
      border-top-color: white;
      border-radius: 50%;
      display: inline-block;
      animation: spin 0.8s linear infinite;
    }
    @keyframes spin { to { transform: rotate(360deg); } }

    .progress-status-bar {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      background: rgba(139, 92, 246, 0.08);
      border: 1px solid rgba(139, 92, 246, 0.25);
      border-radius: var(--radius-md);
      padding: 0.85rem 1rem;
    }
    .progress-icon-wrapper {
      position: relative;
      width: 18px;
      height: 18px;
      flex-shrink: 0;
    }
    .progress-pulse {
      display: block;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: #a855f7;
      animation: pulse-glow 1.5s ease-in-out infinite;
    }
    @keyframes pulse-glow {
      0%, 100% { transform: scale(0.85); opacity: 0.6; box-shadow: 0 0 0 0 rgba(168, 85, 247, 0.5); }
      50% { transform: scale(1.1); opacity: 1; box-shadow: 0 0 12px 4px rgba(168, 85, 247, 0.3); }
    }
    .progress-info {
      display: flex;
      flex-direction: column;
      gap: 0.15rem;
      flex: 1;
    }
    .progress-stage {
      font-size: 0.8rem;
      font-weight: 800;
      color: #c084fc;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .progress-detail {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .progress-elapsed {
      font-size: 0.8rem;
      color: var(--text-muted);
      font-family: monospace;
      white-space: nowrap;
    }
  `]
})
export class VideoGeneratorComponent implements OnChanges {
  @ViewChild('promptInputArea') promptInputArea?: ElementRef<HTMLTextAreaElement>;

  @Input() models: OpenRouterModel[] = [];
  @Input() activeProvider: 'openrouter' | 'replicate' = 'openrouter';
  @Input() selectedModelId = 'bytedance/seedance-2.5';
  @Input() generatedVideoUrl = '';
  @Input() videoContent = '';
  @Input() scriptResult: VideoScriptResponse | null = null;
  @Input() isGenerating = false;
  @Input() errorMessage = '';

  @Output() generateVideo = new EventEmitter<VideoGenerationConfig>();
  @Output() generateScript = new EventEmitter<{ concept: string; duration: number; model: string; estimatedCost: string; referenceImages?: string[]; referenceItems?: ReferenceMedia[] }>();

  concept = '';
  duration = 15;
  aspectRatio = '16:9';
  generateMode: 'video' | 'script' = 'video';
  referenceImages: string[] = [];
  referenceItems: ReferenceMedia[] = [];

  showTagDropdown = false;

  // Video generation progress tracking
  videoStatusStage = '';
  videoStatusDetail = '';
  private _elapsedSeconds = 0;
  private _elapsedTimer: any = null;

  ngOnChanges(changes: SimpleChanges) {
    if (changes['models'] && this.models.length > 0) {
      const modelExists = this.models.find(m => m.id === this.selectedModelId);
      if (!modelExists) {
        this.selectedModelId = this.models[0].id;
      }
    }
  }

  get elapsedTimeDisplay(): string {
    const m = Math.floor(this._elapsedSeconds / 60);
    const s = this._elapsedSeconds % 60;
    return m > 0 ? `${m}m ${s}s` : `${s}s`;
  }

  get videoStatusStageLabel(): string {
    const labels: Record<string, string> = {
      'submitting': '📤 Invio',
      'queued': '📋 In Coda',
      'processing': '⚙️ Elaborazione',
      'fallback': '🔄 Fallback',
      'synthetic': '🎨 Anteprima',
      'completed': '✅ Completato',
      'error': '❌ Errore'
    };
    return labels[this.videoStatusStage] || '⏳ In Corso';
  }

  updateVideoStatus(status: string, detail?: string) {
    this.videoStatusStage = status;
    this.videoStatusDetail = detail || '';
  }

  startElapsedTimer() {
    this._elapsedSeconds = 0;
    this.videoStatusStage = '';
    this.videoStatusDetail = '';
    this.stopElapsedTimer();
    this._elapsedTimer = setInterval(() => {
      this._elapsedSeconds++;
    }, 1000);
  }

  stopElapsedTimer() {
    if (this._elapsedTimer) {
      clearInterval(this._elapsedTimer);
      this._elapsedTimer = null;
    }
  }

  onPromptInput(event: any) {
    const text = this.concept || '';
    const lastChar = text.slice(-1);
    if (lastChar === '@') {
      this.showTagDropdown = true;
    } else if (text.endsWith(' ') || text.length === 0) {
      this.showTagDropdown = false;
    }
  }

  insertTagIntoPrompt(tag: string) {
    if (!this.concept.includes(tag)) {
      this.concept = this.concept ? `${this.concept} ${tag}` : tag;
    } else {
      this.concept = `${this.concept} ${tag}`;
    }
    this.showTagDropdown = false;
    if (this.promptInputArea) {
      this.promptInputArea.nativeElement.focus();
    }
  }

  selectTagFromDropdown(tag: string) {
    if (this.concept.endsWith('@')) {
      this.concept = this.concept.slice(0, -1) + tag + ' ';
    } else {
      this.insertTagIntoPrompt(tag);
    }
    this.showTagDropdown = false;
  }

  onReferenceImagesSelected(event: Event) {
    const input = event.target as HTMLInputElement;
    if (!input.files || input.files.length === 0) return;

    Array.from(input.files).forEach((file, index) => {
      const reader = new FileReader();
      reader.onload = (e: ProgressEvent<FileReader>) => {
        if (e.target?.result) {
          const dataUrl = e.target.result as string;
          const currentCount = this.referenceItems.length + 1;
          const defaultTag = `@ref${currentCount}`;
          const cleanName = file.name ? file.name.replace(/\.[^/.]+$/, '') : `Soggetto ${currentCount}`;

          const newItem: ReferenceMedia = {
            id: Date.now().toString() + '_' + currentCount,
            name: cleanName,
            tag: defaultTag,
            dataUrl: dataUrl,
            previewUrl: dataUrl
          };

          this.referenceItems.push(newItem);
          this.referenceImages.push(dataUrl);
        }
      };
      reader.readAsDataURL(file);
    });
    input.value = '';
  }

  updateTagName(item: ReferenceMedia, index: number) {
    if (!item.name.trim()) {
      item.name = `ref${index + 1}`;
    }
    // Clean tag formatting
    const tagFormatted = item.name.trim().toLowerCase().replace(/[^a-z0-9_]/g, '');
    if (tagFormatted) {
      item.tag = `@${tagFormatted}`;
    }
  }

  removeReferenceItem(index: number) {
    this.referenceItems.splice(index, 1);
    this.referenceImages.splice(index, 1);
  }

  getSceneReferenceItem(scene: any): ReferenceMedia | undefined {
    if (!scene) return undefined;
    if (scene.referenceTag) {
      const match = this.referenceItems.find(r => r.tag.toLowerCase() === scene.referenceTag.toLowerCase() || r.name.toLowerCase() === scene.referenceTag.replace('@', '').toLowerCase());
      if (match) return match;
    }
    // Fallback: match by index if tagged in prompt
    for (const item of this.referenceItems) {
      if (scene.visualPrompt && scene.visualPrompt.includes(item.tag)) {
        return item;
      }
    }
    return undefined;
  }

  get currentModel(): OpenRouterModel | undefined {
    return this.models.find(m => m.id === this.selectedModelId);
  }

  get costPerSecond(): number {
    const model = this.currentModel;
    if (model?.pricing_skus && model.pricing_skus['per-video-second']) {
      return parseFloat(model.pricing_skus['per-video-second']) || 0;
    }
    // Fallback in base all'ID o default
    if (this.selectedModelId.includes('seedance-2.5') || this.selectedModelId.includes('seedance-2.0')) {
      return 0.067;
    }
    if (this.selectedModelId.includes('minimax')) {
      return 0.050;
    }
    if (this.selectedModelId.includes('kling-v3.0-pro')) {
      return 0.200;
    }
    if (this.selectedModelId.includes('grok-imagine-video')) {
      return 0.100;
    }
    if (this.selectedModelId.includes('hotshot')) {
      return 0.020;
    }
    return 0.050;
  }

  get estimatedCostDisplay(): string {
    if (this.generateMode === 'video') {
      const perSec = this.costPerSecond;
      const total = perSec * this.duration;
      return `$${total.toFixed(4)}`;
    }

    const promptLen = this.concept?.length || 0;
    const inputTokens = Math.max(50, Math.ceil(promptLen / 4));
    const expectedOutputTokens = (this.duration / 15) * 800;

    const costInput = (inputTokens / 1_000_000) * 0.10;
    const costOutput = (expectedOutputTokens / 1_000_000) * 0.50;
    const total = costInput + costOutput;

    if (total < 0.0001) return '< $0.0001';
    return `$${total.toFixed(4)}`;
  }

  onGenerate() {
    if (this.generateMode === 'video') {
      this.generateVideo.emit({
        apiKey: '',
        prompt: this.concept,
        model: this.selectedModelId,
        aspectRatio: this.aspectRatio,
        durationSeconds: this.duration,
        estimatedCost: this.estimatedCostDisplay,
        referenceImages: this.referenceImages.length > 0 ? [...this.referenceImages] : undefined,
        referenceItems: this.referenceItems.length > 0 ? [...this.referenceItems] : undefined,
        generateMode: 'video'
      });
    } else {
      this.generateScript.emit({
        concept: this.concept,
        duration: this.duration,
        model: this.selectedModelId,
        estimatedCost: this.estimatedCostDisplay,
        referenceImages: this.referenceImages.length > 0 ? [...this.referenceImages] : undefined,
        referenceItems: this.referenceItems.length > 0 ? [...this.referenceItems] : undefined
      });
    }
  }

  copyToClipboard(text: string) {
    navigator.clipboard.writeText(text);
  }

  copyFullScript() {
    if (!this.scriptResult) return;
    const full = `${this.scriptResult.title}\n${this.scriptResult.summary}\n\n` + 
      this.scriptResult.scenes.map(s => `[Scena ${s.sceneNumber} - ${s.duration} - ${s.cameraMovement} ${s.referenceTag ? '(' + s.referenceTag + ')' : ''}]\nVisual: ${s.visualPrompt}\nAudio: ${s.audioVoiceover}\n`).join('\n');
    navigator.clipboard.writeText(full);
  }
}