Use chunk size and method override from caps

Use the chunk size from the capabilities if it is higher than the
locally configured one.

Use HTTP method override mode if the TUS capabilities says so.

apps/files/src/mixins.js

@@ -447,9 +447,22 @@ export default {
         // FIXME: this might break if relativePath is not the currentFolder
         // and is a mount point that has no chunk support
         if (this.browserSupportsChunked && this.currentFolder.isChunkedUploadSupported) {
+          let chunkSize = this.configuration.uploadChunkSize
+          if (this.capabilities.files.tus_support.max_chunk_size > 0) {
+            if (
+              chunkSize === null ||
+              chunkSize === 0 ||
+              chunkSize > this.capabilities.files.tus_support.max_chunk_size
+            ) {
+              chunkSize = this.capabilities.files.tus_support.max_chunk_size
+            }
+          }
+          console.log('tus_support: ', this.capabilities.files.tus_support)
+          console.log('Using chunk size: ', chunkSize)
           promise = this.uploadQueue.add(() => {
             return this.uploadChunkedFile(file, pathUtil.dirname(relativePath), {
-              chunkSize: this.configuration.uploadChunkSize,
+              chunkSize: chunkSize,
+              overridePatchMethod: !!this.capabilities.files.tus_support.http_method_override,
               emitProgress: progress => {
                 this.$_ocUpload_onProgress(progress, file)
               }

changelog/unreleased/3568

@@ -0,0 +1,11 @@
+Enhancement: Use TUS settings from capabilities
+
+The TUS settings advertise the maximum chunk size, so we now use the smallest chunk size from
+the one configured in config.json and the one from the capabilities.
+
+If the capabilities report that one should use the X-HTTP-Override-Method header,
+the upload will now use a POST request for uploads with that header set
+instead of PATCH.
+
+https://github.com/owncloud/ocis-reva/issues/177
+https://github.com/owncloud/phoenix/pull/3568

src/plugins/upload.js

@@ -25,6 +25,7 @@ export default {
               headers: headers,
               chunkSize: options.chunkSize || Infinity,
               removeFingerprintOnSuccess: true,
+              overridePatchMethod: !!options.overridePatchMethod,
               retryDelays: [0, 3000, 5000, 10000, 20000],
               metadata: {
                 filename: file.name,