feat: add command save-alias

main.ts

@@ -1,137 +1,51 @@
-import { App, Editor, MarkdownView, Modal, Notice, Plugin, PluginSettingTab, Setting } from 'obsidian';
-
-// Remember to rename these classes and interfaces!
-
-interface MyPluginSettings {
-	mySetting: string;
-}
-
-const DEFAULT_SETTINGS: MyPluginSettings = {
-	mySetting: 'default'
-}
-
-export default class MyPlugin extends Plugin {
-	settings: MyPluginSettings;
-
-	async onload() {
-		await this.loadSettings();
-
-		// This creates an icon in the left ribbon.
-		const ribbonIconEl = this.addRibbonIcon('dice', 'Sample Plugin', (evt: MouseEvent) => {
-			// Called when the user clicks the icon.
-			new Notice('This is a notice!');
-		});
-		// Perform additional things with the ribbon
-		ribbonIconEl.addClass('my-plugin-ribbon-class');
-
-		// This adds a status bar item to the bottom of the app. Does not work on mobile apps.
-		const statusBarItemEl = this.addStatusBarItem();
-		statusBarItemEl.setText('Status Bar Text');
-
-		// This adds a simple command that can be triggered anywhere
-		this.addCommand({
-			id: 'open-sample-modal-simple',
-			name: 'Open sample modal (simple)',
-			callback: () => {
-				new SampleModal(this.app).open();
-			}
-		});
-		// This adds an editor command that can perform some operation on the current editor instance
-		this.addCommand({
-			id: 'sample-editor-command',
-			name: 'Sample editor command',
-			editorCallback: (editor: Editor, view: MarkdownView) => {
-				console.log(editor.getSelection());
-				editor.replaceSelection('Sample Editor Command');
-			}
-		});
-		// This adds a complex command that can check whether the current state of the app allows execution of the command
-		this.addCommand({
-			id: 'open-sample-modal-complex',
-			name: 'Open sample modal (complex)',
-			checkCallback: (checking: boolean) => {
-				// Conditions to check
-				const markdownView = this.app.workspace.getActiveViewOfType(MarkdownView);
-				if (markdownView) {
-					// If checking is true, we're simply "checking" if the command can be run.
-					// If checking is false, then we want to actually perform the operation.
-					if (!checking) {
-						new SampleModal(this.app).open();
-					}
-
-					// This command will only show up in Command Palette when the check function returns true
-					return true;
-				}
-			}
-		});
-
-		// This adds a settings tab so the user can configure various aspects of the plugin
-		this.addSettingTab(new SampleSettingTab(this.app, this));
-
-		// If the plugin hooks up any global DOM events (on parts of the app that doesn't belong to this plugin)
-		// Using this function will automatically remove the event listener when this plugin is disabled.
-		this.registerDomEvent(document, 'click', (evt: MouseEvent) => {
-			console.log('click', evt);
-		});
-
-		// When registering intervals, this function will automatically clear the interval when the plugin is disabled.
-		this.registerInterval(window.setInterval(() => console.log('setInterval'), 5 * 60 * 1000));
-	}
-
-	onunload() {
-
-	}
-
-	async loadSettings() {
-		this.settings = Object.assign({}, DEFAULT_SETTINGS, await this.loadData());
-	}
-
-	async saveSettings() {
-		await this.saveData(this.settings);
-	}
-}
-
-class SampleModal extends Modal {
-	constructor(app: App) {
-		super(app);
-	}
-
-	onOpen() {
-		const {contentEl} = this;
-		contentEl.setText('Woah!');
-	}
-
-	onClose() {
-		const {contentEl} = this;
-		contentEl.empty();
-	}
-}
-
-class SampleSettingTab extends PluginSettingTab {
-	plugin: MyPlugin;
-
-	constructor(app: App, plugin: MyPlugin) {
-		super(app, plugin);
-		this.plugin = plugin;
-	}
-
-	display(): void {
-		const {containerEl} = this;
-
-		containerEl.empty();
-
-		containerEl.createEl('h2', {text: 'Settings for my awesome plugin.'});
-
-		new Setting(containerEl)
-			.setName('Setting #1')
-			.setDesc('It\'s a secret')
-			.addText(text => text
-				.setPlaceholder('Enter your secret')
-				.setValue(this.plugin.settings.mySetting)
-				.onChange(async (value) => {
-					console.log('Secret: ' + value);
-					this.plugin.settings.mySetting = value;
-					await this.plugin.saveSettings();
-				}));
-	}
+// https://marcus.se.net/obsidian-plugin-docs/reference/typescript
+import { Plugin, parseFrontMatterAliases } from 'obsidian';
+import type { Editor, MarkdownView } from 'obsidian';
+
+import { isNeedleAtIndex } from './util';
+
+export default class NoteAliases extends Plugin {
+  public onload (): void {
+    this.addCommand({
+      id: 'save-alias',
+      name: 'Save alias of the link under cursor in the target note frontmatter',
+
+      editorCheckCallback: (checking: boolean, editor: Editor, view: MarkdownView) => {
+        const linkRe = /\[\[(?<target>[^[|]*)\|(?<alias>[^\]]*)\]\]/u;
+
+        const position = editor.getCursor();
+        const line = editor.getLine(position.line);
+        const links = line.match(new RegExp(linkRe, 'gu')) ?? [];
+        const link = links.find(match => isNeedleAtIndex(line, match, position.ch));
+
+        if (!link) return false;
+        if (checking) return true;
+
+        const { alias, target } = linkRe.exec(link)?.groups ?? {};
+        const fromPath = view.file.path;
+
+        (async (): Promise<void> => {
+          let targetFile = app.metadataCache.getFirstLinkpathDest(target, fromPath);
+          if (!targetFile) {
+            console.info('target file not exists', { checking, editor, view });
+            const targetPath = `${app.fileManager.getNewFileParent(fromPath).path}/${target}.md`;
+            targetFile = await app.vault.create(targetPath, '');
+            console.info(targetFile);
+          }
+          await app.fileManager.processFrontMatter(
+            targetFile,
+            (metadata: { aliases?: unknown }) => {
+              const aliases = parseFrontMatterAliases(metadata) ?? [];
+              const exists = aliases.some(item => item.toLowerCase() === alias.toLowerCase());
+
+              if (exists) return;
+
+              metadata.aliases = [...aliases, alias];
+            }
+          );
+        })().catch(error => { console.error(error); });
+        return true;
+      },
+    });
+  }
 }

util/index.ts

@@ -0,0 +1 @@
+export * from './string';

util/string/index.ts

@@ -0,0 +1 @@
+export * from './isNeedleAtIndex';

util/string/isNeedleAtIndex.ts

@@ -0,0 +1,9 @@
+export function isNeedleAtIndex (haystack: string, needle: string, index: number): boolean {
+  let start = haystack.indexOf(needle);
+  while (start !== -1) {
+    if (start > index) return false;
+    if ((start + needle.length) > index) return true;
+    start = haystack.indexOf(needle, start + 1);
+  }
+  return false;
+}