Adds backup functionality

src/components/Configuration/CloudBackupRestore.vue

@@ -14,21 +14,30 @@
       </p>
     </div>
     <div class="section backup-section">
-      <h3>Backup</h3>
+      <h3 v-if="backupId">Update Backup</h3>
+      <h3 v-else>Make a Backup</h3>
       <Input
         v-model="backupPassword"
         name="backup-password"
-        label="Choose a Password"
+        :label="backupId ? 'Enter your Password' : 'Choose a Password'"
         layout="vertical"
         type="password"
       />
-      <Button>
-        <template v-slot:text>Backup</template>
+      <Button :click="checkPass">
+        <template v-slot:text>{{backupId ? 'Update Backup' : 'Backup'}}</template>
         <template v-slot:icon><IconBackup /></template>
       </Button>
+      <div class="results-view" v-if="backupId">
+        <span class="backup-id-label">Your Backup ID: </span>
+        <pre class="backup-id-value">{{ backupId }}</pre>
+        <span class="backup-id-note">
+          This is used to restore from backups later.
+          So keep it, along with your password somewhere safe.
+        </span>
+      </div>
     </div>
     <div class="section restore-section">
-      <h3>Restore</h3>
+      <h3>Restore a Backup</h3>
       <Input
         v-model="restoreCode"
         name="restore-code"
@@ -50,10 +59,13 @@
 
 <script>
 
+import sha256 from 'crypto-js/sha256';
 import Button from '@/components/FormElements/Button';
 import Input from '@/components/FormElements/Input';
 import IconBackup from '@/assets/interface-icons/config-backup.svg';
 import IconRestore from '@/assets/interface-icons/config-restore.svg';
+import { backup } from '@/utils/CloudBackup';
+import { localStorageKeys } from '@/utils/defaults';
 
 export default {
   name: 'CloudBackupRestore',
@@ -65,6 +77,7 @@ export default {
       backupPassword: '',
       restorePassword: '',
       restoreCode: '',
+      backupId: localStorage[localStorageKeys.BACKUP_ID] || '',
     };
   },
   components: {
@@ -73,6 +86,44 @@ export default {
     IconBackup,
     IconRestore,
   },
+  methods: {
+    checkPass() {
+      const savedHash = localStorage[localStorageKeys.BACKUP_HASH] || undefined;
+      if (!savedHash || savedHash === this.makeHash(this.backupPassword)) {
+        this.makeBackup();
+      } else {
+        this.showErrorMsg('Incorrect password. Please enter the password you used last time.');
+      }
+    },
+    makeBackup() {
+      backup(this.config, this.backupPassword)
+        .then((response) => {
+          if (!response.data || response.data.errorMsg || !response.data.backupId) {
+            this.showErrorMsg(response.data.errorMsg || 'Error');
+          } else { // All clear, no error
+            this.updateAfterBackup(response.data.backupId);
+          }
+        }).catch(() => {
+          this.showErrorMsg('Unable to process request');
+        });
+    },
+    updateAfterBackup(backupId) {
+      const hash = this.makeHash(this.backupPassword);
+      localStorage.setItem(localStorageKeys.BACKUP_ID, backupId);
+      localStorage.setItem(localStorageKeys.BACKUP_HASH, hash);
+      this.showSuccessMsg('Backup Completed Succesfully');
+      this.backupPassword = '';
+    },
+    showErrorMsg(errorMsg) {
+      this.$toasted.show(errorMsg, { className: 'toast-error' });
+    },
+    showSuccessMsg(msg) {
+      this.$toasted.show(msg, { className: 'toast-success' });
+    },
+    makeHash(pass) {
+      return sha256(pass).toString();
+    },
+  },
 };
 </script>
 
@@ -112,8 +163,29 @@ export default {
     }
   }
 
+  div.results-view {
+    width: 16rem;
+    margin: 0.5rem auto;
+    padding: 0.5rem 0.75rem;
+    box-sizing: border-box;
+    border: 1px dashed var(--config-settings-color);
+    border-radius: var(--curve-factor);
+    text-align: left;
+    .backup-id-label, .backup-id-value {
+      display: inline;
+      font-size: 1rem;
+      margin-right: 0.5rem;
+    }
+    .backup-id-note {
+      font-size: 0.8rem;
+      display: block;
+      opacity: 0.8;
+      margin-top: 0.5rem;
+    }
+  }
+
   /* Overide form element colors, so that config menu can be themed by user */
-  input, button {
+  input, button, {
     color: var(--config-settings-color);
     border: 1px solid var(--config-settings-color);
     background: none;