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D8993.id30471.diff
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diff --git a/native/backup/api.js b/native/backup/api.js
new file mode 100644
--- /dev/null
+++ b/native/backup/api.js
@@ -0,0 +1,57 @@
+// @flow
+
+import base64 from 'base-64';
+
+import backupService from 'lib/facts/backup-service.js';
+import type { BackupAuth, BackupEncrypted } from 'lib/types/backup-types.js';
+import { makeBackupServiceEndpointURL } from 'lib/utils/backup-service.js';
+import { toBase64URL } from 'lib/utils/base64.js';
+
+import { commUtilsModule } from '../native-modules.js';
+
+function getBackupFormData(backup: BackupEncrypted): FormData {
+ const { backupID, userKeys, userData } = backup;
+ const userKeysHash = commUtilsModule.sha256(userKeys.buffer);
+ const userDataHash = commUtilsModule.sha256(userData.buffer);
+ const userKeysStr = commUtilsModule.base64EncodeBuffer(userKeys.buffer);
+ const userDataStr = commUtilsModule.base64EncodeBuffer(userData.buffer);
+
+ const formData = new FormData();
+ formData.append('backup_id', backupID);
+ formData.append('user_keys_hash', toBase64URL(userKeysHash));
+ formData.append('user_keys', userKeysStr);
+ formData.append('user_data_hash', toBase64URL(userDataHash));
+ formData.append('user_data', userDataStr);
+ formData.append('attachments', '');
+ return formData;
+}
+
+function getBackupAuthorizationHeader(auth: BackupAuth) {
+ const authStr = JSON.stringify(auth);
+ const authBase64 = base64.encode(authStr);
+ return `Bearer ${authBase64}`;
+}
+
+async function uploadBackup(backup: BackupEncrypted, auth: BackupAuth) {
+ const authHeader = getBackupAuthorizationHeader(auth);
+
+ const uploadBackupEndpoint = backupService.httpEndpoints.UPLOAD_BACKUP;
+ const sendBackupResponse = await fetch(
+ makeBackupServiceEndpointURL(uploadBackupEndpoint),
+ {
+ method: uploadBackupEndpoint.method,
+ body: getBackupFormData(backup),
+ headers: {
+ 'Content-Type': 'multipart/form-data',
+ 'Authorization': authHeader,
+ },
+ },
+ );
+
+ if (!sendBackupResponse.ok) {
+ const { status, statusText } = sendBackupResponse;
+ throw new Error(`Server responded with HTTP ${status}: ${statusText}`);
+ }
+}
+
+export { uploadBackup };
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D8993: [client-backup] implement API call to upload backup
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