import { App, Notice, Plugin, TFile } from 'obsidian';
import { PluginSettings, IndexingProgress } from './src/types';
import { DEFAULT_SETTINGS, validateSettings } from './src/settings';
import { IndexingOrchestrator } from './src/indexing/orchestrator';
import { SearchModal } from './src/search/searchModal';
import { QdrantSettingsTab } from './src/ui/settingsTab';

export default class QdrantPlugin extends Plugin {
	settings: PluginSettings;
	private indexingOrchestrator: IndexingOrchestrator | null = null;
	private statusBarItem: HTMLElement | null = null;

	async onload() {
		await this.loadSettings();

		// Validate settings
		const errors = validateSettings(this.settings);
		if (errors.length > 0) {
			new Notice('Settings validation failed: ' + errors.join(', '));
		}

		// Initialize indexing orchestrator
		try {
			this.indexingOrchestrator = new IndexingOrchestrator(this.app, this.settings);
			await this.indexingOrchestrator.initialize();
		} catch (error) {
			console.error('Failed to initialize indexing orchestrator:', error);
			new Notice('Failed to initialize indexing system: ' + error.message);
		}

		// Add status bar item
		this.setupStatusBar();

		// Add commands
		this.addCommands();

		// Add settings tab
		this.addSettingTab(new QdrantSettingsTab(this.app, this));

		// Set up progress tracking
		this.setupProgressTracking();

		console.log('Qdrant Semantic Search plugin loaded');
	}

	onunload() {
		// Shutdown indexing orchestrator
		if (this.indexingOrchestrator) {
			this.indexingOrchestrator.shutdown();
		}
	}

	async loadSettings() {
		this.settings = Object.assign({}, DEFAULT_SETTINGS, await this.loadData());
	}

	async saveSettings() {
		await this.saveData(this.settings);
	}

	private setupStatusBar() {
		this.statusBarItem = this.addStatusBarItem();
		this.updateStatusBar('Ready');
	}

	private addCommands() {
		// Semantic search command
		this.addCommand({
			id: 'semantic-search',
			name: 'Semantic search',
			callback: () => {
				if (!this.indexingOrchestrator?.isReady()) {
					new Notice('Indexing system not ready. Please check your settings.');
					return;
				}
				new SearchModal(this.app, this.settings).open();
			}
		});

		// Index current file command
		this.addCommand({
			id: 'index-current-file',
			name: 'Index current file',
			checkCallback: (checking: boolean) => {
				const activeFile = this.app.workspace.getActiveFile();
				if (activeFile instanceof TFile) {
					if (!checking) {
						this.indexFile(activeFile);
					}
					return true;
				}
				return false;
			}
		});

		// Full reindex command
		this.addCommand({
			id: 'full-reindex',
			name: 'Full reindex vault',
			callback: () => {
				this.indexFullVault();
			}
		});

		// Clear index command
		this.addCommand({
			id: 'clear-index',
			name: 'Clear index',
			callback: () => {
				this.clearIndex();
			}
		});

		// Open graph view command
		if (this.settings.enableGraphView) {
			this.addCommand({
				id: 'open-graph-view',
				name: 'Open graph view',
				callback: () => {
					// TODO: Implement graph view
					new Notice('Graph view not yet implemented');
				}
			});
		}
	}

	private setupProgressTracking() {
		if (!this.indexingOrchestrator) return;

		this.indexingOrchestrator.setProgressCallback((progress: IndexingProgress) => {
			this.updateStatusBar(progress);
		});

		this.indexingOrchestrator.setErrorCallback((error: string) => {
			new Notice('Indexing error: ' + error);
		});
	}

	private updateStatusBar(progress: IndexingProgress | string) {
		if (!this.statusBarItem) return;

		if (typeof progress === 'string') {
			this.statusBarItem.setText(`Qdrant: ${progress}`);
			return;
		}

		if (progress.isRunning) {
			const percentage = progress.totalFiles > 0 
				? Math.round((progress.processedFiles / progress.totalFiles) * 100)
				: 0;
			this.statusBarItem.setText(`Qdrant: Indexing ${percentage}% (${progress.processedFiles}/${progress.totalFiles})`);
		} else {
			this.statusBarItem.setText('Qdrant: Ready');
		}
	}

	// Public methods for settings tab
	async testQdrantConnection(): Promise<boolean> {
		if (!this.indexingOrchestrator) return false;
		const connections = await this.indexingOrchestrator.testConnections();
		return connections.qdrant;
	}

	async testOllamaConnection(): Promise<boolean> {
		if (!this.indexingOrchestrator) return false;
		const connections = await this.indexingOrchestrator.testConnections();
		return connections.embedding;
	}

	async indexFullVault(): Promise<void> {
		if (!this.indexingOrchestrator?.isReady()) {
			throw new Error('Indexing system not ready');
		}
		await this.indexingOrchestrator.indexFullVault();
	}

	async indexFile(file: TFile): Promise<void> {
		if (!this.indexingOrchestrator?.isReady()) {
			throw new Error('Indexing system not ready');
		}
		await this.indexingOrchestrator.indexFile(file);
	}

	async clearIndex(): Promise<void> {
		if (!this.indexingOrchestrator?.isReady()) {
			throw new Error('Indexing system not ready');
		}
		await this.indexingOrchestrator.clearIndex();
	}

	async getIndexStats(): Promise<any> {
		if (!this.indexingOrchestrator?.isReady()) {
			throw new Error('Indexing system not ready');
		}
		return await this.indexingOrchestrator.getIndexStats();
	}
}