Added import logic, moved logic to the profile class

src/lib/extension/entities/MaintenanceProfile.js

@@ -1,5 +1,6 @@
 import StorageEntity from "$lib/extension/base/StorageEntity.js";
 import EntitiesController from "$lib/extension/EntitiesController.js";
+import {compressToEncodedURIComponent, decompressFromEncodedURIComponent} from "lz-string";
 
 /**
  * @typedef {Object} MaintenanceProfileSettings
@@ -29,6 +30,26 @@ class MaintenanceProfile extends StorageEntity {
     return super.settings;
   }
 
+  /**
+   * Export the profile to the formatted JSON.
+   *
+   * @type {string}
+   */
+  toJSON() {
+    return JSON.stringify({
+      v: 1,
+      id: this.id,
+      name: this.settings.name,
+      tags: this.settings.tags,
+    }, null, 2);
+  }
+
+  toCompressedJSON() {
+    return compressToEncodedURIComponent(
+      this.toJSON()
+    );
+  }
+
   static _entityName = "profiles";
 
   /**
@@ -58,6 +79,58 @@ class MaintenanceProfile extends StorageEntity {
       callback
     );
   }
+
+  /**
+   * Validate and import the profile from the JSON.
+   * @param {string} exportedString JSON for profile.
+   * @return {MaintenanceProfile} Maintenance profile imported from the JSON. Note that profile is not automatically
+   * saved.
+   * @throws {Error} When version is unsupported or format is invalid.
+   */
+  static importFromJSON(exportedString) {
+    let importedObject;
+
+    try {
+      importedObject = JSON.parse(exportedString);
+    } catch (e) {
+      throw new Error('Invalid JSON!');
+    }
+
+    if (importedObject.v !== 1) {
+      throw new Error('Unsupported version!');
+    }
+
+    if (
+      !importedObject.id
+      || typeof importedObject.id !== "string"
+      || !importedObject.name
+      || typeof importedObject.name !== "string"
+      || !importedObject.tags
+      || !Array.isArray(importedObject.tags)
+    ) {
+      throw new Error('Invalid profile format detected!');
+    }
+
+    return new MaintenanceProfile(
+      importedObject.id,
+      {
+        name: importedObject.name,
+        tags: importedObject.tags,
+      }
+    );
+  }
+
+  /**
+   * Validate and import the profile from the compressed JSON string.
+   * @param {string} compressedString
+   * @return {MaintenanceProfile}
+   * @throws {Error} When version is unsupported or format is invalid.
+   */
+  static importFromCompressedJSON(compressedString) {
+    return this.importFromJSON(
+      decompressFromEncodedURIComponent(compressedString)
+    );
+  }
 }
 
-export default MaintenanceProfile;
+export default MaintenanceProfile;