From df1dc7ff22ffed517e45958e6beb882864e2e83a Mon Sep 17 00:00:00 2001
From: cballevre <celestin.ballevre@protonmail.com>
Date: Thu, 16 May 2024 17:44:07 +0200
Subject: [PATCH] feat(nextcloud): Download a file

---
 docs/api/cozy-stack-client.md                    | 15 +++++++++++++++
 packages/cozy-stack-client/src/FileCollection.js | 10 ++--------
 .../src/NextcloudFilesCollection.js              | 16 ++++++++++++++++
 packages/cozy-stack-client/src/utils.js          | 16 ++++++++++++++++
 4 files changed, 49 insertions(+), 8 deletions(-)

diff --git a/docs/api/cozy-stack-client.md b/docs/api/cozy-stack-client.md
index dd81f3acd1..6d74476151 100644
--- a/docs/api/cozy-stack-client.md
+++ b/docs/api/cozy-stack-client.md
@@ -108,6 +108,9 @@ query to work</p>
 <dd><p>Rules determine the behavior of the sharing when changes are made to the shared document
 See <a href="https://docs.cozy.io/en/cozy-stack/sharing-design/#description-of-a-sharing">https://docs.cozy.io/en/cozy-stack/sharing-design/#description-of-a-sharing</a></p>
 </dd>
+<dt><a href="#forceDownload">forceDownload</a></dt>
+<dd><p>Force a download from the given href</p>
+</dd>
 </dl>
 
 ## Functions
@@ -2200,6 +2203,18 @@ See https://docs.cozy.io/en/cozy-stack/sharing-design/#description-of-a-sharing
 | document | [<code>Sharing</code>](#Sharing) | The document to share. Should have and _id and a name |
 | sharingType | [<code>SharingType</code>](#SharingType) | The type of the sharing |
 
+<a name="forceDownload"></a>
+
+## forceDownload
+Force a download from the given href
+
+**Kind**: global constant  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| href | <code>string</code> | The link to download |
+| filename | <code>string</code> | The file name to download |
+
 <a name="getAccessToken"></a>
 
 ## getAccessToken() ⇒ <code>string</code>
diff --git a/packages/cozy-stack-client/src/FileCollection.js b/packages/cozy-stack-client/src/FileCollection.js
index 91a507b618..e7f84beb3d 100644
--- a/packages/cozy-stack-client/src/FileCollection.js
+++ b/packages/cozy-stack-client/src/FileCollection.js
@@ -6,7 +6,7 @@ import pick from 'lodash/pick'
 import { MangoQueryOptions } from './mangoIndex'
 
 import DocumentCollection, { normalizeDoc } from './DocumentCollection'
-import { uri, slugify, formatBytes } from './utils'
+import { uri, slugify, formatBytes, forceDownload } from './utils'
 import { FetchError } from './errors'
 import { dontThrowNotFoundError } from './Collection'
 import { getIllegalCharacters } from './getIllegalCharacter'
@@ -659,13 +659,7 @@ class FileCollection extends DocumentCollection {
    * @param {string} filename - The file name to download
    */
   forceFileDownload = (href, filename) => {
-    const element = document.createElement('a')
-    element.setAttribute('href', href)
-    element.setAttribute('download', filename)
-    element.style.display = 'none'
-    document.body.appendChild(element)
-    element.click()
-    document.body.removeChild(element)
+    forceDownload(href, filename)
   }
 
   /**
diff --git a/packages/cozy-stack-client/src/NextcloudFilesCollection.js b/packages/cozy-stack-client/src/NextcloudFilesCollection.js
index 34278823e4..503c6a5ef9 100644
--- a/packages/cozy-stack-client/src/NextcloudFilesCollection.js
+++ b/packages/cozy-stack-client/src/NextcloudFilesCollection.js
@@ -1,4 +1,5 @@
 import DocumentCollection from './DocumentCollection'
+import { forceDownload } from './utils'
 
 const NEXTCLOUD_FILES_DOCTYPE = 'io.cozy.remote.nextcloud.files'
 
@@ -41,6 +42,21 @@ class NextcloudFilesCollection extends DocumentCollection {
     }
     throw new Error('Not implemented')
   }
+
+  /**
+   * Download a file from a Nextcloud server
+   *
+   */
+  async download(file) {
+    const res = await this.stackClient.fetch(
+      'GET',
+      `/remote/nextcloud/${file.cozyMetadata.sourceAccount}/${file.path}?Dl=1`
+    )
+    const blob = await res.blob()
+    const href = URL.createObjectURL(blob)
+    const filename = file.path.split('/').pop()
+    forceDownload(href, filename)
+  }
 }
 
 export { NextcloudFilesCollection, NEXTCLOUD_FILES_DOCTYPE }
diff --git a/packages/cozy-stack-client/src/utils.js b/packages/cozy-stack-client/src/utils.js
index 954dc58b00..336c4aa5db 100644
--- a/packages/cozy-stack-client/src/utils.js
+++ b/packages/cozy-stack-client/src/utils.js
@@ -69,3 +69,19 @@ export const formatBytes = (bytes, decimals = 2) => {
 
   return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i]
 }
+
+/**
+ * Force a download from the given href
+ *
+ * @param {string} href - The link to download
+ * @param {string} filename - The file name to download
+ */
+export const forceDownload = (href, filename) => {
+  const element = document.createElement('a')
+  element.setAttribute('href', href)
+  element.setAttribute('download', filename)
+  element.style.display = 'none'
+  document.body.appendChild(element)
+  element.click()
+  document.body.removeChild(element)
+}