Working version of on this day ai

main.ts

@@ -1,85 +1,39 @@
-import { App, Editor, MarkdownView, Modal, Notice, Plugin, PluginSettingTab, Setting } from 'obsidian';
+import { MarkdownView,  Notice, Plugin, TFolder } from 'obsidian';
+import OpenAI from 'openai';
+import { OnThisDayPluginSettings, DEFAULT_SETTINGS } from 'src/OnThisDayPluginSettings';
+import OnThisDaySettingTab from 'src/OnThisDaySettingTab';
+import aiPrompt from 'src/prompt';
 
-// 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;
+//
+// Main Plugin Class
+//
+export default class OnThisDayPlugin extends Plugin {
+	settings: OnThisDayPluginSettings;
 
 	async onload() {
+		console.log('Loading On This Day AI plugin');
 		await this.loadSettings();
+		this.addSettingTab(new OnThisDaySettingTab(this.app, this));
 
-		// 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();
-			}
+			id: 'on-this-day-ai:on-this-day-placeholder',
+			name: 'Add On This Day AI Placeholder',
+			callback: async () => {
+				await this.addPlaceholder();
+			},
 		});
-		// 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');
-			}
+			id: 'on-this-day-ai:generate-date-summaries',
+			name: 'Generate Through The Years',
+			callback: async () => {
+				await this.generateDateSummaries();
+			},
 		});
-		// 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 onunload() {
+		console.log('Unloading On This Day AI plugin');
 	}
 
 	async loadSettings() {
@@ -89,46 +43,236 @@ export default class MyPlugin extends Plugin {
 	async saveSettings() {
 		await this.saveData(this.settings);
 	}
-}
 
-class SampleModal extends Modal {
-	constructor(app: App) {
-		super(app);
+	//
+	// Utility Functions
+	//
+
+	// Check if a string matches the expected date format ("MMMM D, YYYY")
+	isValidDateString(dateString: string): boolean {
+		const regex =
+			/^(January|February|March|April|May|June|July|August|September|October|November|December) \d{1,2}, \d{4}$/;
+		return regex.test(dateString);
 	}
 
-	onOpen() {
-		const {contentEl} = this;
-		contentEl.setText('Woah!');
+	// Parse a date string (assumes "MMMM D, YYYY")
+	parseDateFromString(dateString: string, format: string): Date | null {
+		// This regex is based on the expected format "MMMM D, YYYY"
+		const regex =
+			/^(January|February|March|April|May|June|July|August|September|October|November|December) (\d{1,2}), (\d{4})$/;
+		const match = dateString.match(regex);
+		if (match) {
+			const monthName = match[1];
+			const day = parseInt(match[2]);
+			const year = parseInt(match[3]);
+			const date = new Date(`${monthName} ${day}, ${year}`);
+			if (!isNaN(date.getTime())) {
+				return date;
+			}
+		}
+		return null;
 	}
 
-	onClose() {
-		const {contentEl} = this;
-		contentEl.empty();
-	}
-}
+	//
+	// Main Function: Generate Date Summaries
+	//
+	async generateDateSummaries() {
+		// 1. Ensure the command is run from a file with a valid date as its title.
+		const activeFile = this.app.workspace.getActiveFile();
+		if (!activeFile) {
+			new Notice('No active file found.');
+			return;
+		}
+		if (!this.isValidDateString(activeFile.basename)) {
+			new Notice(`This command must be run from a file with a date title in the format ${this.settings.dateFormat}`);
+			return;
+		}
 
-class SampleSettingTab extends PluginSettingTab {
-	plugin: MyPlugin;
+		const inputDateString = activeFile.basename;
 
-	constructor(app: App, plugin: MyPlugin) {
-		super(app, plugin);
-		this.plugin = plugin;
+		// 2. Parse the input date to extract month and day (ignoring the year)
+		const parsedDate = this.parseDateFromString(inputDateString, this.settings.dateFormat);
+		if (!parsedDate) {
+			new Notice('Could not parse the date from the file title.');
+			return;
+		}
+		const month = parsedDate.getMonth(); // 0-based month
+		const day = parsedDate.getDate();
+		const currentYear = parsedDate.getFullYear();
+
+		// 3. Search through the daily notes folder for matching files
+		const folder = this.app.vault.getAbstractFileByPath(this.settings.dailyNotesFolder);
+		if (!folder || !(folder instanceof TFolder)) {
+			new Notice('Daily notes folder not found.');
+			return;
+		}
+
+		// Get all Markdown files in the daily notes folder
+		const files = this.app.vault
+			.getFiles()
+			.filter(
+				(file) =>
+					file.path.startsWith(this.settings.dailyNotesFolder) && file.extension === 'md'
+			);
+
+		// Build a map: year => concatenated content of matching daily notes
+		let yearToContent: Record<string, string> = {};
+		for (const file of files) {
+			const fileDate = this.parseDateFromString(file.basename, this.settings.dateFormat);
+			if (!fileDate) continue;
+			if (fileDate.getMonth() === month && fileDate.getDate() === day && fileDate.getFullYear() != currentYear) {
+				const yearStr = fileDate.getFullYear().toString();
+				const content = await this.app.vault.read(file);
+				if (yearToContent[yearStr]) {
+					yearToContent[yearStr] += '\n' + content;
+				} else {
+					yearToContent[yearStr] = content;
+				}
+			}
+		}
+
+		if (Object.keys(yearToContent).length === 0) {
+			new Notice('No matching daily notes found for that date.');
+			return;
+		}
+
+		// 4. Construct the API prompt that instructs GPT-4 to produce a JSON summary mapping.
+		const prompt = this.constructPrompt(yearToContent, inputDateString);
+
+		// 5. Show a loading indicator (persistent notice) until work is done.
+		const loadingNotice = new Notice("Generating summaries...", 0);
+
+		// 6. Call the OpenAI API once with the entire JSON map.
+		let responseJSON: Record<string, string>;
+		try {
+			responseJSON = await this.callOpenAI(prompt);
+		} catch (error: any) {
+			loadingNotice.hide();
+			console.error('API call failed: ' + error.message);
+			new Notice('API call failed: ' + error.message);
+			return;
+		}
+
+		// 7. Build the output markdown block.
+		const outputBlock = this.buildOutputBlock(responseJSON, this.settings.horizontalRules);
+
+		// 8. Insert the output block by looking for a placeholder marker.
+		// Define a unique placeholder marker.
+		const placeholder = "<!OTD>";
+		const activeView = this.app.workspace.getActiveViewOfType(MarkdownView);
+		if (!activeView) {
+			loadingNotice.hide();
+			new Notice('No active editor found.');
+			return;
+		}
+		const editor = (activeView as MarkdownView).editor;
+		const currentContent = editor.getValue();
+		let newContent = "";
+
+		if (currentContent.includes(placeholder)) {
+			// Replace the placeholder with the output block.
+			newContent = currentContent.replace(placeholder, outputBlock);
+			editor.setValue(newContent);
+		} else {
+			// If no placeholder is found, place block at cursor location
+			editor.replaceSelection(outputBlock);
+		}
+
+		editor.setValue(newContent);
+
+		// 9. Hide the loading notice and show a completion notice.
+		loadingNotice.hide();
+		new Notice('On This Day summaries inserted.');
 	}
 
-	display(): void {
-		const {containerEl} = this;
-
-		containerEl.empty();
-
-		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) => {
-					this.plugin.settings.mySetting = value;
-					await this.plugin.saveSettings();
-				}));
+	//
+	// Construct the API Prompt
+	//
+	constructPrompt(yearToContent: Record<string, string>, inputDateString: string): string {
+		const promptInstructions = aiPrompt
+		const dataString = JSON.stringify(yearToContent);
+		return `${promptInstructions}\n\nData:\n${dataString}`;
 	}
-}
+
+	//
+	// Call the OpenAI API
+	//
+	async callOpenAI(prompt: string): Promise<Record<string, string>> {
+		const client = new OpenAI({
+			apiKey: this.settings.openaiApiKey,
+			dangerouslyAllowBrowser: true
+		});
+	
+		try {
+			const response = await client.chat.completions.create({
+				model: this.settings.model,
+				messages: [
+					{
+						role: 'system',
+						content:
+							'You are a helpful assistant that summarizes daily journal entries in a strict JSON format.',
+					},
+					{
+						role: 'user',
+						content: prompt,
+					},
+				],
+				temperature: 0.2,
+			});
+	
+			// Validate the response structure
+			if (
+				!response.choices ||
+				response.choices.length === 0 ||
+				!response.choices[0].message?.content
+			) {
+				throw new Error('No valid response received from OpenAI.');
+			}
+	
+			const content = response.choices[0].message.content;
+			try {
+				const result = JSON.parse(content);
+				return result;
+			} catch (parseError: any) {
+				console.error('Failed to parse JSON from OpenAI response:', parseError);
+				throw new Error(
+					'Failed to parse JSON from OpenAI response: ' + parseError.message
+				);
+			}
+		} catch (error: any) {
+			console.error('OpenAI API error:', error);
+			throw new Error('OpenAI API error: ' + error.message);
+		}
+	}
+
+	//
+	// Build the Output Markdown
+	//
+	buildOutputBlock(summaries: Record<string, string>, horizontalRules: string): string {
+		// Add horizontal rules based on settings
+		let output = '## On This Day...\n';
+		if (horizontalRules.includes('Above')) {
+			output = '---\n## On This Day...\n'
+		}
+
+		// Optionally, sort the years in descending order
+		const years = Object.keys(summaries).sort((a, b) => parseInt(b) - parseInt(a));
+		for (const year of years) {
+			output += `- **${year}:** ${summaries[year]}\n`;
+		}
+		if (horizontalRules.includes('Below')) {
+			output += "\n---"
+		}
+		return output;
+	}
+
+	addPlaceholder() {
+		const activeView = this.app.workspace.getActiveViewOfType(MarkdownView);
+		if (!activeView) {
+			new Notice('No active editor found.');
+			return;
+		}
+		const editor = (activeView as MarkdownView).editor;
+		editor.replaceSelection('<!OTD>');
+	}
+}

manifest.json

@@ -1,11 +1,11 @@
 {
-	"id": "sample-plugin",
-	"name": "Sample Plugin",
+	"id": "on-this-day-ai-obsidian-plugin",
+	"name": "On This Day AI",
 	"version": "1.0.0",
 	"minAppVersion": "0.15.0",
-	"description": "Demonstrates some of the capabilities of the Obsidian API.",
-	"author": "Obsidian",
-	"authorUrl": "https://obsidian.md",
+	"description": "Use AI to remind yourself what has happened on this date in past years.",
+	"author": "Ben Stuart",
+	"authorUrl": "https://github.com/benstuart0/on-this-day-ai-obsidian-plugin",
 	"fundingUrl": "https://obsidian.md/pricing",
 	"isDesktopOnly": false
 }

package.json

@@ -1,7 +1,7 @@
 {
-	"name": "obsidian-sample-plugin",
+	"name": "on-this-day-ai-obsidian-plugin",
 	"version": "1.0.0",
-	"description": "This is a sample plugin for Obsidian (https://obsidian.md)",
+	"description": "This is the first version of the On This Day AI Obsidian plugin",
 	"main": "main.js",
 	"scripts": {
 		"dev": "node esbuild.config.mjs",
@@ -9,7 +9,7 @@
 		"version": "node version-bump.mjs && git add manifest.json versions.json"
 	},
 	"keywords": [],
-	"author": "",
+	"author": "Ben Stuart",
 	"license": "MIT",
 	"devDependencies": {
 		"@types/node": "^16.11.6",
@@ -20,5 +20,8 @@
 		"obsidian": "latest",
 		"tslib": "2.4.0",
 		"typescript": "4.7.4"
+	},
+	"dependencies": {
+		"openai": "^4.83.0"
 	}
 }

src/OnThisDayPluginSettings.ts

@@ -0,0 +1,18 @@
+//
+// Settings Interfaces & Defaults
+//
+export interface OnThisDayPluginSettings {
+	openaiApiKey: string;
+	model: string;
+	dailyNotesFolder: string;
+    dateFormat: string;
+    horizontalRules: string;
+}
+
+export const DEFAULT_SETTINGS: OnThisDayPluginSettings = {
+	openaiApiKey: '',
+	model: 'gpt-4',
+	dailyNotesFolder: '010 Daily Notes',
+    dateFormat: 'MMMM D, YYYY',
+    horizontalRules: ''
+};

src/OnThisDaySettingTab.ts

@@ -0,0 +1,106 @@
+import { App, PluginSettingTab, Setting, TFolder } from 'obsidian';
+import moment from 'moment';
+import OnThisDayPlugin from 'main';
+import { validateInputTools } from 'openai/lib/parser';
+
+//
+// Settings Tab
+//
+export default class OnThisDaySettingTab extends PluginSettingTab {
+	plugin: OnThisDayPlugin;
+
+	constructor(app: App, plugin: OnThisDayPlugin) {
+		super(app, plugin);
+		this.plugin = plugin;
+	}
+
+	display(): void {
+		const { containerEl } = this;
+		containerEl.empty();
+		containerEl.createEl('h2', { text: 'On This Day AI Settings' });
+
+		// Date Format Setting with dynamic example using the current setting
+		const dateSetting = new Setting(containerEl)
+		.setName('Date Format')
+		.setDesc(`Format for daily note filenames. Example: ${moment(new Date()).format(this.plugin.settings.dateFormat)}`)
+		.addText((text) => {
+			text
+				.setPlaceholder('MMMM D, YYYY')
+				.setValue(this.plugin.settings.dateFormat)
+				.onChange(async (value) => {
+					this.plugin.settings.dateFormat = value;
+					await this.plugin.saveSettings();
+					// Update the description with a new example using the updated format
+					const newExample = moment(new Date()).format(value);
+					dateSetting.setDesc(`Format for daily note filenames. Example: ${newExample}`);
+				});
+		});
+
+		// Daily Notes Folder Setting
+		new Setting(containerEl)
+			.setName('Daily Notes Folder')
+			.setDesc('Select the folder where your daily notes are stored.')
+			.addDropdown((dropdown) => {
+				// Create an object to hold the folder options
+				const folderOptions: Record<string, string> = {};
+				// Get all files from the vault and filter for folders
+				const allFolders = this.app.vault.getAllLoadedFiles().filter((f) => f instanceof TFolder) as TFolder[];
+				// Populate the folderOptions with folder paths
+				allFolders.forEach((folder) => {
+					folderOptions[folder.path] = folder.path;
+				});
+				// Add each folder option to the dropdown
+				for (const key in folderOptions) {
+					dropdown.addOption(key, folderOptions[key]);
+				}
+				// Set the current value from the plugin settings
+				dropdown.setValue(this.plugin.settings.dailyNotesFolder);
+				dropdown.onChange(async (value: string) => {
+					this.plugin.settings.dailyNotesFolder = value;
+					await this.plugin.saveSettings();
+				});
+			});
+
+		// OpenAI API Key Setting
+		new Setting(containerEl)
+			.setName('OpenAI API Key')
+			.setDesc('Your OpenAI API key.')
+			.addText((text) =>
+				text
+					.setPlaceholder('sk-...')
+					.setValue(this.plugin.settings.openaiApiKey)
+					.onChange(async (value) => {
+						this.plugin.settings.openaiApiKey = value;
+						await this.plugin.saveSettings();
+					})
+			);
+
+		// Model Version Dropdown Setting
+		new Setting(containerEl)
+			.setName('Model Version')
+			.setDesc('Select the OpenAI model to use.')
+			.addDropdown((dropdown) => {
+				dropdown.addOption('gpt-3.5-turbo', 'gpt-3.5-turbo');
+				dropdown.addOption('gpt-4', 'gpt-4');
+				dropdown.setValue(this.plugin.settings.model);
+				dropdown.onChange(async (value: string) => {
+					this.plugin.settings.model = value;
+					await this.plugin.saveSettings();
+				});
+            });
+        new Setting(containerEl)
+            .setName('Horizontal Rules')
+            .setDesc('Would you like horizontal rules above or below the output block?')
+            .addDropdown((dropdown) => {
+                dropdown.addOption('', 'None');
+                dropdown.addOption('Below', 'Below');
+                dropdown.addOption('Above', 'Above');
+                dropdown.addOption('Above Below', 'Both');
+                dropdown.setValue(this.plugin.settings.horizontalRules);
+                dropdown.onChange(async (value: string) => {
+                    this.plugin.settings.horizontalRules = value;
+                    await this.plugin.saveSettings();
+                })
+            })
+	}
+}

src/aiPrompt.txt

@@ -0,0 +1,5 @@
+const aiPrompt =  "Below is a JSON object where each key is a year and each value is the full content of my daily journal for this day on that given year. 
+
+For each year, please provide an interesting summary in 2-3 sentences that highlights the events of that day. Try to include who I spent time with (including their names), what I did, and how I felt.
+
+Use second-person language (you), as you are referring to me - the writer of the journals. Do not include the date in the summary. Return only a JSON object mapping each year to its summary with no extra text, headers, or footers."

src/prompt.ts

@@ -0,0 +1,3 @@
+const aiPrompt =  "Below is a JSON object where each key is a year and each value is the full content of my daily journal for this day on that given year. For each year, please provide an interesting summary in 2-3 sentences that first highlights the most interesting events of the day and then describes how I felt, using second-person language (you), as you are referring to me - the writer of the journals. Do not include the date in the summary. Return only a JSON object mapping each year to its summary with no extra text, headers, or footers."
+
+export default aiPrompt

tsconfig.json

@@ -11,6 +11,7 @@
     "importHelpers": true,
     "isolatedModules": true,
     "strictNullChecks": true,
+    "allowSyntheticDefaultImports": true,
     "lib": [
       "DOM",
       "ES5",