feat: upload course materials to bunny storage

pages/ManageCourses.tsx

@@ -83,6 +83,10 @@ const CourseModal: React.FC<{
   const [coverConfigured, setCoverConfigured] = useState<boolean | null>(null);
   const [coverUploadMessage, setCoverUploadMessage] = useState('');
   const [isCoverUploading, setIsCoverUploading] = useState(false);
+  const attachmentFileRef = useRef<HTMLInputElement>(null);
+  const [assetConfigured, setAssetConfigured] = useState<boolean | null>(null);
+  const [isAssetUploading, setIsAssetUploading] = useState(false);
+  const [assetUploadMessage, setAssetUploadMessage] = useState('');
   const [editorStep, setEditorStep] = useState<1 | 2 | 3>(1);
   
   // Lesson Management
@@ -102,11 +106,7 @@ const CourseModal: React.FC<{
   const [newTip, setNewTip] = useState('');
   const [attachments, setAttachments] = useState<Attachment[]>([]);
   
-  // New Attachment State
-  const [newAttName, setNewAttName] = useState('');
-  const [newAttType, setNewAttType] = useState<AttachmentType>('pdf');
-  const [newAttUrl, setNewAttUrl] = useState('');
-  const [newAttSize, setNewAttSize] = useState('');
+  // Optional context saved alongside each uploaded material.
   const [newAttDesc, setNewAttDesc] = useState('');
   
   const [isSubmitting, setIsSubmitting] = useState(false);
@@ -151,12 +151,17 @@ const CourseModal: React.FC<{
       setBunnyUploadState('idle');
       setBunnyUploadMessage('');
       setCoverUploadMessage('');
+      setAssetUploadMessage('');
+      setNewAttDesc('');
       instructorApi.bunnyConfiguration()
         .then((response) => setBunnyConfigured(response.data.configured))
         .catch(() => setBunnyConfigured(false));
       instructorApi.coverConfiguration()
         .then((response) => setCoverConfigured(response.data.configured))
         .catch(() => setCoverConfigured(false));
+      instructorApi.assetConfiguration()
+        .then((response) => setAssetConfigured(response.data.configured))
+        .catch(() => setAssetConfigured(false));
       courseApi.categories()
         .then((response) => {
           setCategories(response.data);
@@ -391,36 +396,41 @@ const CourseModal: React.FC<{
     setTips(tips.filter((_, i) => i !== idx));
   };
 
-  const handleAddAttachment = () => {
-    if (!newAttName.trim()) {
-      alert("Informe o nome do arquivo para download.");
-      return;
-    }
-    if (!newAttUrl.trim()) {
-      alert('Informe a URL do material.');
+  const handleAttachmentUpload = async (event: React.ChangeEvent<HTMLInputElement>) => {
+    const file = event.target.files?.[0];
+    event.target.value = '';
+    if (!file) return;
+    if (!assetConfigured) {
+      setAssetUploadMessage('O armazenamento de materiais ainda não foi configurado pelo administrador.');
       return;
     }
+
+    setIsAssetUploading(true);
+    setAssetUploadMessage(`Enviando ${file.name}...`);
     try {
-      new URL(newAttUrl.trim());
-    } catch {
-      alert('Informe uma URL válida para o material.');
-      return;
+      const response = await instructorApi.uploadAsset(file);
+      const type: AttachmentType = response.data.kind === 'spreadsheet'
+        ? 'spreadsheet'
+        : response.data.kind === 'archive'
+          ? 'zip'
+          : file.name.toLowerCase().endsWith('.pdf')
+            ? 'pdf'
+            : 'doc';
+      setAttachments((current) => [...current, {
+        id: `asset-${response.data.key}`,
+        name: file.name,
+        type,
+        url: response.data.assetUrl,
+        sizeBytes: response.data.sizeBytes,
+        description: newAttDesc.trim(),
+      }]);
+      setNewAttDesc('');
+      setAssetUploadMessage('Material enviado com sucesso.');
+    } catch (error) {
+      setAssetUploadMessage(error instanceof Error ? error.message : 'Não foi possível enviar o material.');
+    } finally {
+      setIsAssetUploading(false);
     }
-
-    const att: Attachment = {
-      id: `att-${Date.now()}`,
-      name: newAttName.trim(),
-      type: newAttType,
-      url: newAttUrl.trim(),
-      size: newAttSize.trim() || undefined,
-      description: newAttDesc.trim()
-    };
-
-    setAttachments([...attachments, att]);
-    setNewAttName('');
-    setNewAttSize('');
-    setNewAttUrl('');
-    setNewAttDesc('');
   };
 
   const removeAttachment = (id: string) => {
@@ -486,7 +496,7 @@ const CourseModal: React.FC<{
           <div>
             <p className="text-xs font-bold uppercase tracking-wider text-orange-400">{initialData ? 'Editar curso' : 'Novo curso'}</p>
             <h2 className="mt-1 text-2xl font-extrabold text-white">{editorStep === 1 ? 'Informações do curso' : editorStep === 2 ? 'Estruture as aulas' : 'Materiais complementares'}</h2>
-            <p className="mt-1 text-sm text-gray-500">{editorStep === 1 ? 'Defina como o curso será apresentado.' : editorStep === 2 ? 'Adicione e organize a trilha de aprendizado.' : 'Inclua os arquivos e links de apoio.'}</p>
+            <p className="mt-1 text-sm text-gray-500">{editorStep === 1 ? 'Defina como o curso será apresentado.' : editorStep === 2 ? 'Adicione e organize a trilha de aprendizado.' : 'Envie os arquivos de apoio para seus alunos.'}</p>
           </div>
           <button type="button" onClick={onClose} className="shrink-0 rounded-full bg-white/5 p-2.5 text-gray-300 hover:bg-white/10 hover:text-white" aria-label="Fechar editor"><X className="w-5 h-5" /></button>
         </div>
@@ -667,61 +677,37 @@ const CourseModal: React.FC<{
               </h3>
             </div>
 
-            {/* Add attachment inputs */}
-            <div className="space-y-2 pt-1">
-              <div className="grid grid-cols-3 gap-2">
-                <input 
-                  type="text" 
-                  value={newAttName}
-                  onChange={(e) => setNewAttName(e.target.value)}
-                  placeholder="Ex.: Planilha de acompanhamento de campanhas"
-                  className="col-span-2 bg-white/5 border border-white/10 rounded-lg px-2.5 py-1.5 text-xs text-white focus:outline-none focus:border-orange-500/50"
-                />
-                <select
-                  value={newAttType}
-                  onChange={(e) => setNewAttType(e.target.value as AttachmentType)}
-                  className="bg-zinc-900 border border-white/10 rounded-lg px-2 py-1.5 text-xs text-white focus:outline-none"
+            <input
+              ref={attachmentFileRef}
+              type="file"
+              accept=".pdf,.doc,.docx,.xls,.xlsx,.csv,.zip,application/pdf,application/msword,application/vnd.openxmlformats-officedocument.wordprocessingml.document,application/vnd.ms-excel,application/vnd.openxmlformats-officedocument.spreadsheetml.sheet,text/csv,application/zip"
+              className="hidden"
+              onChange={(event) => void handleAttachmentUpload(event)}
+            />
+            <div className="rounded-xl border border-dashed border-white/15 bg-white/[0.02] p-4">
+              <div className="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
+                <div>
+                  <p className="text-sm font-semibold text-white">Envie um arquivo de apoio</p>
+                  <p className="mt-1 text-xs text-gray-500">PDF, DOCX, XLSX, CSV ou ZIP. O formato e o tamanho são identificados automaticamente.</p>
+                </div>
+                <button
+                  type="button"
+                  disabled={!assetConfigured || isAssetUploading}
+                  onClick={() => attachmentFileRef.current?.click()}
+                  className="inline-flex shrink-0 items-center justify-center gap-2 rounded-xl bg-orange-500 px-4 py-2.5 text-sm font-bold text-white transition hover:bg-orange-600 disabled:cursor-not-allowed disabled:opacity-40"
                 >
-                  <option value="pdf">PDF</option>
-                  <option value="spreadsheet">Planilha</option>
-                  <option value="zip">Pacote ZIP</option>
-                  <option value="doc">Documento</option>
-                  <option value="link">Link</option>
-                </select>
-              </div>
-
-              <div className="flex gap-2">
-                <input
-                  type="url"
-                  value={newAttUrl}
-                  onChange={(e) => setNewAttUrl(e.target.value)}
-                  placeholder="URL do material (https://...)"
-                  className="min-w-0 flex-1 bg-white/5 border border-white/10 rounded-lg px-2.5 py-1.5 text-xs text-white focus:outline-none"
-                />
-              </div>
-              <div className="flex gap-2">
-                <input 
-                  type="text" 
-                  value={newAttSize}
-                  onChange={(e) => setNewAttSize(e.target.value)}
-                  placeholder="Tamanho (opcional)"
-                  className="w-28 bg-white/5 border border-white/10 rounded-lg px-2.5 py-1.5 text-xs text-white focus:outline-none"
-                />
-                <input 
-                  type="text" 
-                  value={newAttDesc}
-                  onChange={(e) => setNewAttDesc(e.target.value)}
-                  placeholder="Explique como este material apoia o aprendizado."
-                  className="flex-1 bg-white/5 border border-white/10 rounded-lg px-2.5 py-1.5 text-xs text-white focus:outline-none"
-                />
-                <button 
-                  type="button" 
-                  onClick={handleAddAttachment}
-                  className="bg-orange-500 hover:bg-orange-600 px-3 py-1.5 rounded-lg text-white text-xs font-bold shrink-0 transition-colors"
-                >
-                  Adicionar
+                  {isAssetUploading ? <Loader2 className="h-4 w-4 animate-spin" /> : <Paperclip className="h-4 w-4" />}
+                  {isAssetUploading ? 'Enviando...' : 'Enviar arquivo'}
                 </button>
               </div>
+              <input
+                type="text"
+                value={newAttDesc}
+                onChange={(event) => setNewAttDesc(event.target.value)}
+                placeholder="Descrição opcional: como este material apoia o aprendizado?"
+                className="mt-3 w-full rounded-lg border border-white/10 bg-black/20 px-3 py-2.5 text-xs text-white outline-none focus:border-orange-500/50"
+              />
+              {assetUploadMessage && <p className={`mt-2 text-xs ${assetUploadMessage.includes('sucesso') ? 'text-emerald-400' : assetUploadMessage.includes('Enviando') ? 'text-gray-400' : 'text-amber-300'}`}>{assetUploadMessage}</p>}
             </div>
 
             {/* List of Attachments */}
@@ -731,7 +717,7 @@ const CourseModal: React.FC<{
                   <div className="flex items-center gap-2 min-w-0 pr-2">
                     {getAttachmentIcon(att.type)}
                     <span className="text-gray-200 font-medium truncate">{att.name}</span>
-                    <span className="text-[10px] text-gray-500 font-mono">({att.size || '1 MB'})</span>
+                    {att.size && <span className="text-[10px] text-gray-500 font-mono">({att.size})</span>}
                   </div>
                   <button 
                     type="button"