upadte: clean code + add next cloud

lib/nextcloud.ts

@@ -0,0 +1,135 @@
+// ---------------------------------------------------------------------------
+// Nextcloud WebDAV client
+// Uses native fetch — no npm package needed.
+// ---------------------------------------------------------------------------
+
+function getConfig() {
+  const url = process.env.NEXTCLOUD_URL
+  const user = process.env.NEXTCLOUD_USER
+  const password = process.env.NEXTCLOUD_PASSWORD
+  const basePath = process.env.NEXTCLOUD_BASE_PATH || 'Models'
+
+  if (!url || !user || !password) {
+    throw new Error('Nextcloud non configure (NEXTCLOUD_URL, NEXTCLOUD_USER, NEXTCLOUD_PASSWORD)')
+  }
+
+  // WebDAV base: https://cloud.example.com/remote.php/dav/files/{user}/
+  const davBase = `${url.replace(/\/+$/, '')}/remote.php/dav/files/${encodeURIComponent(user)}`
+  const auth = 'Basic ' + Buffer.from(`${user}:${password}`).toString('base64')
+
+  return { davBase, auth, basePath }
+}
+
+function davUrl(davBase: string, path: string): string {
+  const clean = path.replace(/^\/+/, '').replace(/\/+$/, '')
+  return `${davBase}/${clean}`
+}
+
+// ---------------------------------------------------------------------------
+// Low-level WebDAV helpers
+// ---------------------------------------------------------------------------
+
+async function davRequest(
+  method: string,
+  path: string,
+  body?: Buffer | string | null,
+  extraHeaders?: Record<string, string>,
+): Promise<Response> {
+  const { davBase, auth } = getConfig()
+  const url = davUrl(davBase, path)
+
+  const res = await fetch(url, {
+    method,
+    headers: {
+      Authorization: auth,
+      ...extraHeaders,
+    },
+    body: body ?? undefined,
+  })
+
+  return res
+}
+
+// ---------------------------------------------------------------------------
+// Public API
+// ---------------------------------------------------------------------------
+
+/** Check if a folder exists on the Nextcloud instance. */
+export async function folderExists(path: string): Promise<boolean> {
+  try {
+    const res = await davRequest('PROPFIND', path + '/', null, { Depth: '0' })
+    return res.status >= 200 && res.status < 300
+  } catch {
+    return false
+  }
+}
+
+/**
+ * Create a folder and all parent segments if they don't exist.
+ * Like `mkdir -p`.
+ */
+export async function mkdirRecursive(path: string): Promise<void> {
+  const segments = path.replace(/^\/+/, '').replace(/\/+$/, '').split('/')
+  let current = ''
+
+  for (const seg of segments) {
+    current += '/' + seg
+    const exists = await folderExists(current)
+    if (!exists) {
+      const res = await davRequest('MKCOL', current + '/')
+      if (res.status !== 201 && res.status !== 405) {
+        // 405 = already exists (race condition), that's fine
+        const text = await res.text().catch(() => '')
+        throw new Error(`MKCOL ${current} failed (${res.status}): ${text.slice(0, 200)}`)
+      }
+    }
+  }
+}
+
+/** Upload a file (overwrite if exists). */
+export async function uploadFile(path: string, content: Buffer): Promise<void> {
+  const res = await davRequest('PUT', path, content, {
+    'Content-Type': 'application/octet-stream',
+    'Content-Length': String(content.length),
+  })
+
+  if (res.status < 200 || res.status >= 300) {
+    const text = await res.text().catch(() => '')
+    throw new Error(`PUT ${path} failed (${res.status}): ${text.slice(0, 200)}`)
+  }
+}
+
+/** Move (rename) a folder or file. */
+export async function moveFolder(from: string, to: string): Promise<void> {
+  const { davBase } = getConfig()
+  const destination = davUrl(davBase, to) + '/'
+
+  const res = await davRequest('MOVE', from + '/', null, {
+    Destination: destination,
+    Overwrite: 'F',
+  })
+
+  if (res.status < 200 || res.status >= 300) {
+    const text = await res.text().catch(() => '')
+    throw new Error(`MOVE ${from} -> ${to} failed (${res.status}): ${text.slice(0, 200)}`)
+  }
+}
+
+// ---------------------------------------------------------------------------
+// High-level: find next available version folder
+// ---------------------------------------------------------------------------
+
+/**
+ * Find the next available Vx folder for archiving.
+ * E.g. if V1/coffeetest exists but V2/coffeetest doesn't, returns "V2".
+ */
+export async function findNextVersion(
+  basePath: string,
+  folderName: string,
+): Promise<string> {
+  for (let i = 1; ; i++) {
+    const versionPath = `${basePath}/V${i}/${folderName}`
+    const exists = await folderExists(versionPath)
+    if (!exists) return `V${i}`
+  }
+}