From 12283f29f23e2f39fb4b9e51491d7274005152d4 Mon Sep 17 00:00:00 2001
From: admtracksteel <admtracksteel@gmail.com>
Date: Tue, 1 Sep 2026 02:33:04 +0000
Subject: [PATCH] Correcao de sintaxe no app.js e aprimoramento da geracao e
 visualizacao de ilustracoes em Inventando Historias

---
 public/app.js     |  11 +++-
 public/index.html |   8 ++-
 server.js         | 155 +++++++++++++++++++++++++++-------------------
 3 files changed, 107 insertions(+), 67 deletions(-)

diff --git a/public/app.js b/public/app.js
index 6e06474..9ba8841 100644
--- a/public/app.js
+++ b/public/app.js
@@ -7610,6 +7610,8 @@ window.toggleCustomAudio = (btn) => {
             turmaId: musicaTurmaSelect?.value || null,
             gerarAudio: true
           })
+        });
+
         if (!res.ok) {
           const errMsg = await safeExtractError(res, 'Erro ao compor música');
           throw new Error(errMsg);
@@ -8117,7 +8119,14 @@ window.toggleCustomAudio = (btn) => {
 
     // Imagem da cena
     if (cena.imageUrl) {
-      if (historiaCenaImg) historiaCenaImg.src = cena.imageUrl;
+      if (historiaCenaImg) {
+        historiaCenaImg.src = cena.imageUrl;
+        historiaCenaImg.onclick = () => window.open(cena.imageUrl, '_blank');
+      }
+      const historiaCenaOpenBtn = document.getElementById('historiaCenaOpenBtn');
+      const historiaCenaDownloadBtn = document.getElementById('historiaCenaDownloadBtn');
+      if (historiaCenaOpenBtn) historiaCenaOpenBtn.href = cena.imageUrl;
+      if (historiaCenaDownloadBtn) historiaCenaDownloadBtn.href = cena.imageUrl;
       if (historiaCenaImageContainer) historiaCenaImageContainer.style.display = 'block';
       if (btnGenerateSceneImage) btnGenerateSceneImage.innerHTML = '🔄 Regenerar Ilustração';
     } else {
diff --git a/public/index.html b/public/index.html
index 64cf65e..7fef0a4 100644
--- a/public/index.html
+++ b/public/index.html
@@ -1439,8 +1439,12 @@
                   </div>
 
                   <!-- Container da Imagem da Cena -->
-                  <div id="historiaCenaImageContainer" style="display: none; width: 100%; border-radius: 8px; overflow: hidden; border: 1px solid var(--border-light); max-height: 200px; text-align: center; background: rgba(0,0,0,0.2);">
-                    <img id="historiaCenaImg" src="" alt="Ilustração da Cena" style="max-height: 200px; width: auto; object-fit: contain;">
+                  <div id="historiaCenaImageContainer" style="display: none; width: 100%; border-radius: 10px; overflow: hidden; border: 1px solid var(--border-light); text-align: center; background: rgba(0,0,0,0.3); margin: 6px 0;">
+                    <img id="historiaCenaImg" src="" alt="Ilustração da Cena" style="max-height: 280px; width: 100%; object-fit: contain; cursor: pointer; border-radius: 8px;" title="Clique para abrir imagem em tela cheia">
+                    <div style="display: flex; justify-content: center; gap: 8px; padding: 6px; background: rgba(0,0,0,0.4);">
+                      <a id="historiaCenaOpenBtn" href="#" target="_blank" class="btn-music-option" style="padding: 4px 10px; font-size: 0.75rem; margin: 0; text-decoration: none; color: #60a5fa; border-color: rgba(59,130,246,0.3);">🔍 Ver em Tela Cheia</a>
+                      <a id="historiaCenaDownloadBtn" href="#" download="ilustracao_cena.jpg" class="btn-music-option" style="padding: 4px 10px; font-size: 0.75rem; margin: 0; text-decoration: none; color: #34d399; border-color: rgba(52,211,153,0.3);">📥 Baixar Ilustração</a>
+                    </div>
                   </div>
 
                   <!-- Texto da Cena -->
diff --git a/server.js b/server.js
index cf18e4c..896ba47 100644
--- a/server.js
+++ b/server.js
@@ -3076,84 +3076,111 @@ app.post('/api/historias/scene-image', requireAuth, async (req, res) => {
     return res.status(400).json({ error: 'O prompt da cena é obrigatório.' });
   }
 
+  const fs = require('fs');
+  const path = require('path');
+  const mediaDir = path.join(__dirname, 'public', 'generated-media');
+  if (!fs.existsSync(mediaDir)) {
+    fs.mkdirSync(mediaDir, { recursive: true });
+  }
+
+  let imageBuffer = null;
+  let providerUsed = 'minimax';
+
+  const cleanPrompt = (prompt || 'cute children book illustration').replace(/[^\w\s,.-]/gi, '');
+  const cuteStyle = 'adorable cute 3D Pixar claymation style, innocent friendly children book illustration, soft rounded features, big expressive eyes, warm comforting lighting, vibrant colors, 4k digital art';
+  const fullPrompt = `${cleanPrompt}, ${estiloVisual || 'Livro Infantil'}, ${cuteStyle}`;
+  const negativeGuardrail = 'scary, horror, terrifying, creepy, ugly, grotesque, monster, sharp teeth, blood, dark gritty realism, deformed, aggressive, photorealistic';
+
+  // 1. Tentar MiniMax image-01 com timeout
   try {
-    console.log(`[Histórias] Gerando ilustração para cena ${cenaNumero || 1}...`);
-    const enhancedPrompt = `${prompt}, ${estiloVisual || 'children book colorful illustration'}, vibrant lighting, cute warm character design, 4k master artwork`;
+    const minmBase = (process.env.MINIMAX_API_BASE || 'https://api.minimax.io/v1').replace(/\/v1\/?$/, '');
+    const apiKey = process.env.MINIMAX_API_KEY;
 
-    // 1. Tentar MiniMax image-01
-    if (process.env.MINIMAX_API_KEY) {
-      try {
-        const minmBase = (process.env.MINIMAX_API_BASE || 'https://api.minimax.io/v1').replace(/\/v1\/?$/, '');
-        const imgResp = await fetch(`${minmBase}/v1/image_generation`, {
-          method: 'POST',
-          headers: {
-            'Authorization': `Bearer ${process.env.MINIMAX_API_KEY}`,
-            'Content-Type': 'application/json'
-          },
-          body: JSON.stringify({
-            model: 'image-01',
-            prompt: enhancedPrompt,
-            aspect_ratio: '4:3',
-            response_format: 'base64'
-          })
-        });
+    if (apiKey) {
+      const controller = new AbortController();
+      const timeoutId = setTimeout(() => controller.abort(), 25000);
 
-        if (imgResp.ok) {
-          const imgData = await imgResp.json();
-          const base64Data = imgData.data?.image_base64 || imgData.data?.images?.[0];
-          if (base64Data) {
-            const fs = require('fs');
-            const path = require('path');
-            const mediaDir = path.join(__dirname, 'public', 'generated-media');
-            if (!fs.existsSync(mediaDir)) fs.mkdirSync(mediaDir, { recursive: true });
-            const fileName = `cena_${Date.now()}.png`;
-            const filePath = path.join(mediaDir, fileName);
-            const buffer = Buffer.from(base64Data, 'base64');
-            fs.writeFileSync(filePath, buffer);
-            await backupMediaFile(filePath, buffer);
-            return res.json({ success: true, imageUrl: `/generated-media/${fileName}` });
+      const genResp = await fetch(`${minmBase}/v1/image_generation`, {
+        method: 'POST',
+        headers: {
+          'Authorization': `Bearer ${apiKey}`,
+          'Content-Type': 'application/json'
+        },
+        body: JSON.stringify({
+          model: 'image-01',
+          prompt: fullPrompt,
+          n: 1
+        }),
+        signal: controller.signal
+      });
+      clearTimeout(timeoutId);
+
+      if (genResp.ok) {
+        const genData = await genResp.json();
+        const imageUrl = genData.data?.image_urls?.[0];
+        if (imageUrl) {
+          const imgFetch = await fetch(imageUrl);
+          if (imgFetch.ok) {
+            imageBuffer = Buffer.from(await imgFetch.arrayBuffer());
+            console.log(`[Histórias Image] Imagem gerada com sucesso via MiniMax para cena ${cenaNumero || 1}`);
           }
         }
-      } catch (minErr) {
-        console.warn('[Histórias] Falha MiniMax imagem:', minErr.message);
       }
     }
+  } catch (minErr) {
+    console.warn('[Histórias Image] MiniMax falhou ou timeout (' + minErr.message + '), acionando fallback...');
+  }
 
-    // 2. Fallback OpenRouter FLUX/SD
-    if (process.env.OPENROUTER_API_KEY) {
-      try {
-        const r = await fetch('https://openrouter.ai/api/v1/chat/completions', {
-          method: 'POST',
-          headers: {
-            'Authorization': `Bearer ${process.env.OPENROUTER_API_KEY}`,
-            'Content-Type': 'application/json'
-          },
-          body: JSON.stringify({
-            model: 'black-forest-labs/flux-1-schnell',
-            messages: [{ role: 'user', content: enhancedPrompt }]
-          })
-        });
-        if (r.ok) {
-          const data = await r.json();
-          const imgUrl = data.choices?.[0]?.message?.content;
-          if (imgUrl && imgUrl.startsWith('http')) {
-            return res.json({ success: true, imageUrl: imgUrl });
+  // 2. Fallback Multi-Engine Pollinations (Flux / Turbo)
+  if (!imageBuffer) {
+    const enhancedPrompt = encodeURIComponent(fullPrompt);
+    const negativeEncoded = encodeURIComponent(negativeGuardrail);
+    const engines = ['flux', 'turbo'];
+
+    for (const engine of engines) {
+      if (imageBuffer) break;
+      for (let attempt = 1; attempt <= 2; attempt++) {
+        try {
+          providerUsed = `pollinations-${engine}`;
+          const seed = Math.floor(Math.random() * 1000000);
+          const fallbackUrl = `https://image.pollinations.ai/prompt/${enhancedPrompt}?width=1024&height=768&model=${engine}&nologo=true&seed=${seed}&negative=${negativeEncoded}`;
+
+          const controller = new AbortController();
+          const timeoutId = setTimeout(() => controller.abort(), 20000);
+
+          const fbResp = await fetch(fallbackUrl, { signal: controller.signal });
+          clearTimeout(timeoutId);
+
+          if (fbResp.ok) {
+            imageBuffer = Buffer.from(await fbResp.arrayBuffer());
+            console.log(`[Histórias Image] Fallback ${providerUsed} gerou imagem com sucesso (tentativa ${attempt})`);
+            break;
           }
+        } catch (fbErr) {
+          console.warn(`[Histórias Image] Fallback ${engine} erro:`, fbErr.message);
         }
-      } catch (orErr) {
-        console.warn('[Histórias] Falha OpenRouter imagem:', orErr.message);
       }
     }
+  }
 
-    // Fallback Imagem Ilustrada Placeholder SVG
-    res.json({ 
-      success: true, 
-      imageUrl: 'https://images.unsplash.com/photo-1512820790803-83ca734da794?w=600&auto=format&fit=crop&q=80' 
+  if (!imageBuffer) {
+    return res.status(500).json({ error: 'Não foi possível gerar a ilustração no momento. Tente novamente.' });
+  }
+
+  const fileName = `cena_${Date.now()}_${Math.floor(Math.random() * 1000)}.jpg`;
+  const filePath = path.join(mediaDir, fileName);
+
+  try {
+    fs.writeFileSync(filePath, imageBuffer);
+    backupMediaFile(filePath, imageBuffer).catch(() => {});
+    res.json({
+      success: true,
+      imageUrl: `/generated-media/${fileName}`,
+      provider: providerUsed
     });
-
-  } catch (err) {
-    console.error('[Histórias] Erro ao gerar imagem da cena:', err);
-    res.status(500).json({ error: 'Erro ao gerar imagem da cena: ' + err.message });
+  } catch (saveErr) {
+    console.error('Erro ao salvar imagem da cena:', saveErr);
+    res.status(500).json({ error: 'Erro ao salvar imagem gerada.' });
   }
 });