refactor: stage uploads before drive and git delivery

lib/upload-api.ts

@@ -10,6 +10,12 @@ export interface CheckResult {
   diffs: FileDiff[]
 }
 
+export interface StageResult {
+  stagingId: string
+  folderName: string
+  filesCount: number
+}
+
 // ---------------------------------------------------------------------------
 // Shared FormData builder
 // ---------------------------------------------------------------------------
@@ -49,15 +55,17 @@ function buildUploadFormData(
  * Throws on auth/network errors so callers can surface them to the user.
  */
 export async function checkFolderDiffs(
-  folder: FolderEntry,
+  stagingId: string,
   secret: string,
   signal?: AbortSignal,
 ): Promise<CheckResult> {
-  const formData = buildUploadFormData(folder)
   const res = await fetch('/api/upload/check', {
     method: 'POST',
-    headers: { 'x-upload-secret': secret.trim() },
-    body: formData,
+    headers: {
+      'Content-Type': 'application/json',
+      'x-upload-secret': secret.trim(),
+    },
+    body: JSON.stringify({ stagingId }),
     signal,
   })
 
@@ -75,24 +83,51 @@ export async function checkFolderDiffs(
   return { exists: true, diffs: (data.diffs || []) as FileDiff[] }
 }
 
+export async function stageUpload(
+  folder: FolderEntry,
+  secret: string,
+  signal?: AbortSignal,
+): Promise<StageResult> {
+  const formData = buildUploadFormData(folder)
+  const res = await fetch('/api/upload/stage', {
+    method: 'POST',
+    headers: { 'x-upload-secret': secret.trim() },
+    body: formData,
+    signal,
+  })
+
+  const data = await res.json()
+
+  if (!res.ok || !data.success) {
+    throw new Error(data.error || `Erreur serveur (${res.status})`)
+  }
+
+  return {
+    stagingId: data.stagingId,
+    folderName: data.folderName,
+    filesCount: data.filesCount,
+  }
+}
+
 // ---------------------------------------------------------------------------
 // Upload original files to Nextcloud Drive
 // ---------------------------------------------------------------------------
 
 /** Upload original files to Nextcloud Drive (no Blender compression). */
 export async function uploadDrive(
-  folder: FolderEntry,
+  stagingId: string,
   secret: string,
   action: 'new' | 'replace',
   signal?: AbortSignal,
 ): Promise<{ success: boolean; error?: string }> {
-  const formData = buildUploadFormData(folder, { action })
-
   try {
     const res = await fetch('/api/upload/drive', {
       method: 'POST',
-      headers: { 'x-upload-secret': secret.trim() },
-      body: formData,
+      headers: {
+        'Content-Type': 'application/json',
+        'x-upload-secret': secret.trim(),
+      },
+      body: JSON.stringify({ stagingId, action }),
       signal,
     })
     const data = await res.json()
@@ -112,20 +147,21 @@ export async function uploadDrive(
 
 /** Upload files to GitHub (with Blender compression). */
 export async function uploadGit(
-  folder: FolderEntry,
+  stagingId: string,
   secret: string,
   onProgress: (pct: number) => void,
   signal?: AbortSignal,
 ): Promise<{ success: boolean; filename?: string; error?: string }> {
-  const formData = buildUploadFormData(folder)
-
   onProgress(10)
 
   try {
     const res = await fetch('/api/upload/git', {
       method: 'POST',
-      headers: { 'x-upload-secret': secret.trim() },
-      body: formData,
+      headers: {
+        'Content-Type': 'application/json',
+        'x-upload-secret': secret.trim(),
+      },
+      body: JSON.stringify({ stagingId }),
       signal,
     })
 
@@ -137,7 +173,7 @@ export async function uploadGit(
     }
 
     onProgress(100)
-    return { success: true, filename: folder.folderName }
+    return { success: true, filename: data.folderName }
   } catch (err) {
     if (err instanceof DOMException && err.name === 'AbortError') {
       return { success: false, error: 'Upload annule' }