add another command to delete all tasks and labels.

main.ts

@@ -104,6 +104,13 @@ export default class VikunjaPlugin extends Plugin {
 				await this.commands.moveAllTasksToDefaultProject();
 			}
 		})
+		this.addCommand({
+			id: "vikunja-reset-tasks",
+			name: "Reset vikunja instance, delete all tasks and labels",
+			callback: async () => {
+				await this.commands.resetTasksInVikunja();
+			}
+		})
 	}
 
 	private async handleEditorChange() {

src/commands/index.ts

@@ -4,6 +4,7 @@ import {App, Notice} from "obsidian";
 import {getAPI} from "obsidian-dataview";
 import VikunjaPlugin from "../../main";
 import {PluginTask} from "../vaultSearcher/vaultSearcher";
+import {ConfirmModal} from "../modals/confirmModal";
 
 export default class Commands {
 	private plugin: VikunjaPlugin;
@@ -85,4 +86,40 @@ export default class Commands {
 
 		return await vaultSearcher.getTasks(taskParser);
 	}
+
+	async resetTasksInVikunja() {
+		if (this.plugin.settings.debugging) console.log("Reset tasks in Vikunja");
+
+		new ConfirmModal(this.app, async (result) => {
+				if (result !== "yes") {
+					if (this.plugin.settings.debugging) console.log("Reset tasks in Vikunja cancelled");
+					return;
+				}
+
+				if (this.plugin.settings.debugging) console.log("Resetting tasks in Vikunja confirmed");
+				new Notice("Deleting tasks and labels in Vikunja");
+
+				while (true) {
+					const tasks = await this.plugin.tasksApi.getAllTasks();
+					const labels = await this.plugin.labelsApi.getLabels()
+
+					if (tasks.length === 0 && labels.length === 0) {
+						if (this.plugin.settings.debugging) console.log("No tasks and labels found in Vikunja");
+						break;
+					}
+
+					// It is important to handle both tasks and labels in one go, because tasks throws an error, if deleted in one go, so there need some time between execution.
+					if (this.plugin.settings.debugging) console.log("Deleting tasks", tasks);
+					await this.plugin.tasksApi.deleteTasks(tasks);
+
+					if (this.plugin.settings.debugging) console.log("Deleting labels", labels);
+					await this.plugin.labelsApi.deleteLabels(labels);
+				}
+
+
+				if (this.plugin.settings.debugging) console.log("Resetting tasks in Vikunja done");
+				new Notice("Resetting tasks and labels in Vikunja done");
+			}
+		).open();
+	}
 }

src/modals/confirmModal.ts

@@ -0,0 +1,39 @@
+import {App, Modal, Setting} from "obsidian";
+
+export class ConfirmModal extends Modal {
+	result: string;
+	onSubmit: (result: string) => void;
+
+	constructor(app: App, onSubmit: (result: string) => void) {
+		super(app);
+		this.onSubmit = onSubmit;
+	}
+
+	onOpen() {
+		const {contentEl} = this;
+
+		contentEl.createEl("h1", {text: "Are you sure to reset your vikunja instance?"});
+
+		new Setting(contentEl)
+			.setName("Enter 'yes' to confirm:")
+			.addText((text) =>
+				text.onChange((value) => {
+					this.result = value
+				}));
+
+		new Setting(contentEl)
+			.addButton((btn) =>
+				btn
+					.setButtonText("Submit")
+					.setCta()
+					.onClick(() => {
+						this.close();
+						this.onSubmit(this.result);
+					}));
+	}
+
+	onClose() {
+		let {contentEl} = this;
+		contentEl.empty();
+	}
+}

src/vikunja/labels.ts

@@ -115,6 +115,13 @@ class Label {
 		if (this.plugin.settings.debugging) console.log("LabelsAPI: Created labels", createdLabels);
 		return createdLabels;
 	}
+
+	async deleteLabels(labels: ModelsLabel[]) {
+		for (const label of labels) {
+			if (!label.id) throw new Error("Label id is required to delete label");
+			await this.deleteLabel(label.id);
+		}
+	}
 }
 
 export {Label};

src/vikunja/tasks.ts

@@ -69,10 +69,16 @@ class Tasks {
 	}
 
 	async deleteTask(task: ModelsTask) {
-		if (this.plugin.settings.debugging) console.log("TasksApi: Deleting task", task);
 		if (!task.id) throw new Error("TasksApi: Task id is not defined");
-		const param: TasksIdDeleteRequest = {id: task.id};
-		return this.tasksApi.tasksIdDelete(param);
+		const taskId = task.id;
+		if (this.plugin.settings.debugging) console.log("TasksApi: Deleting task", taskId);
+		const param: TasksIdDeleteRequest = {id: taskId};
+		try {
+			const result = await this.tasksApi.tasksIdDelete(param);
+			if (this.plugin.settings.debugging) console.log("TasksApi: Deleted task", taskId, result);
+		} catch (error) {
+			console.error("Error deleting task", error);
+		}
 	}
 
 	async deleteTasks(tasksToDeleteInVikunja: ModelsTask[]) {