import * as vscode from 'vscode';
import { sendFileSelectMessage, sendCodeSelectMessage } from './util';
import ExtensionContextHolder from '../util/extensionContext';
import { TopicManager } from '../topic/topicManager';
import { TopicTreeDataProvider, TopicTreeItem } from '../panel/topicView';
import { FilePairManager } from '../util/diffFilePairs';
import { ApiKeyManager } from '../util/apiKey';
import { UiUtilWrapper } from '../util/uiUtil';
import { isValidApiKey } from '../handler/historyMessagesBase';


function registerOpenChatPanelCommand(context: vscode.ExtensionContext) {
	let disposable = vscode.commands.registerCommand('devchat.openChatPanel', async () => {
		await vscode.commands.executeCommand('devchat-view.focus');
	});
	context.subscriptions.push(disposable);
}

async function ensureChatPanel(context: vscode.ExtensionContext): Promise<boolean> {
	await vscode.commands.executeCommand('devchat-view.focus');
	return true;
}

function registerAddContextCommand(context: vscode.ExtensionContext) {
	const callback = async (uri: { fsPath: any; }) => {
		if (!await ensureChatPanel(context)) {
			return;
		}

		await sendFileSelectMessage(ExtensionContextHolder.provider?.view()!, uri.fsPath);
	};
	context.subscriptions.push(vscode.commands.registerCommand('devchat.addConext', callback));
	context.subscriptions.push(vscode.commands.registerCommand('devchat.addConext_chinese', callback));
}

function registerAskForCodeCommand(context: vscode.ExtensionContext) {
	const callback = async () => {
		const editor = vscode.window.activeTextEditor;
		if (editor) {
			if (!await ensureChatPanel(context)) {
				return;
			}

			const selectedText = editor.document.getText(editor.selection);
			await sendCodeSelectMessage(ExtensionContextHolder.provider?.view()!, editor.document.fileName, selectedText);
		}
	};
	context.subscriptions.push(vscode.commands.registerCommand('devchat.askForCode', callback));
	context.subscriptions.push(vscode.commands.registerCommand('devchat.askForCode_chinese', callback));
}

function registerAskForFileCommand(context: vscode.ExtensionContext) {
	const callback = async () => {
		const editor = vscode.window.activeTextEditor;
		if (editor) {
			if (!await ensureChatPanel(context)) {
				return;
			}

			await sendFileSelectMessage(ExtensionContextHolder.provider?.view()!, editor.document.fileName);
		}
	};
	context.subscriptions.push(vscode.commands.registerCommand('devchat.askForFile', callback));
	context.subscriptions.push(vscode.commands.registerCommand('devchat.askForFile_chinese', callback));
}

export function registerApiKeySettingCommand(context: vscode.ExtensionContext) {
	const secretStorage: vscode.SecretStorage = context.secrets;
	context.subscriptions.push(
		vscode.commands.registerCommand('DevChat.OPENAI_API_KEY', async () => {
			const passwordInput: string = await vscode.window.showInputBox({
				password: true,
				title: "Input Access Key",
				placeHolder: "Set OPENAI_API_KEY (or DevChat Access Key)"
			}) ?? '';

			if (!isValidApiKey(passwordInput)) {
				UiUtilWrapper.showErrorMessage("You access key is invalid!");
				return ;
			}
			ApiKeyManager.writeApiKeySecret(passwordInput);
		})
	);
}

export function registerStatusBarItemClickCommand(context: vscode.ExtensionContext) {
	context.subscriptions.push(
		vscode.commands.registerCommand('devcaht.onStatusBarClick', async () => {
			await vscode.commands.executeCommand('devchat-view.focus');
		})
	);
}

const topicDeleteCallback = async (item: TopicTreeItem) => {
	const confirm = 'Delete';
	const label = typeof item.label === 'string' ? item.label : item.label!.label;
	const truncatedLabel = label.substring(0, 20) + (label.length > 20 ? '...' : '');
	const result = await vscode.window.showWarningMessage(
		`Are you sure you want to delete the topic "${truncatedLabel}"?`,
		{ modal: true },
		confirm
	);

	if (result === confirm) {
		TopicManager.getInstance().deleteTopic(item.id);
	}
};
;

export function regTopicDeleteCommand(context: vscode.ExtensionContext) {
	context.subscriptions.push(
		vscode.commands.registerCommand('devchat-topicview.deleteTopic', topicDeleteCallback)
	);
}

export function regAddTopicCommand(context: vscode.ExtensionContext) {
	context.subscriptions.push(
		vscode.commands.registerCommand('devchat-topicview.addTopic', () => {
			const topic = TopicManager.getInstance().createTopic();
			TopicManager.getInstance().setCurrentTopic(topic.topicId);
		})
	);
}

export function regDeleteSelectTopicCommand(context: vscode.ExtensionContext) {
	context.subscriptions.push(
		vscode.commands.registerCommand('devchat-topicview.deleteSelectedTopic', () => {
			const selectedItem = TopicTreeDataProvider.getInstance().selectedItem;
			if (selectedItem) {
				topicDeleteCallback(selectedItem);
			} else {
				vscode.window.showErrorMessage('No item selected');
			}
		})
	);
}

export function regSelectTopicCommand(context: vscode.ExtensionContext) {
	context.subscriptions.push(
		vscode.commands.registerCommand('devchat-topicview.selectTopic', (item: TopicTreeItem) => {
			TopicTreeDataProvider.getInstance().setSelectedItem(item);
			TopicManager.getInstance().setCurrentTopic(item.id);
		})
	);
}

export function regReloadTopicCommand(context: vscode.ExtensionContext) {
	context.subscriptions.push(
		vscode.commands.registerCommand('devchat-topicview.reloadTopic', async () => {
			TopicManager.getInstance().loadTopics();
		})
	);
}

export function regPythonPathCommand(context: vscode.ExtensionContext) {
	context.subscriptions.push(
		vscode.commands.registerCommand('devchat.PythonPath', async () => {
			const pythonPath = await vscode.window.showInputBox({
				title: "Set Python Path",
				placeHolder: "Set Python Path"
			}) ?? '';

			if (pythonPath) {
				vscode.workspace.getConfiguration("DevChat").update("PythonPath", pythonPath, vscode.ConfigurationTarget.Global);
			}
		})
	);
}

export function regApplyDiffResultCommand(context: vscode.ExtensionContext) {
	context.subscriptions.push(
		vscode.commands.registerCommand('devchat.applyDiffResult', async () => {
			const activeEditor = vscode.window.activeTextEditor;
			const fileName = activeEditor!.document.fileName;

			const [leftUri, rightUri] = FilePairManager.getInstance().findPair(fileName) || [undefined, undefined];
			if (leftUri && rightUri) {
				// 获取对比的两个文件
				const leftDoc = await vscode.workspace.openTextDocument(leftUri);
				const rightDoc = await vscode.workspace.openTextDocument(rightUri);

				// 将右边文档的内容替换到左边文档
				const leftEditor = await vscode.window.showTextDocument(leftDoc);
				await leftEditor.edit(editBuilder => {
					const fullRange = new vscode.Range(0, 0, leftDoc.lineCount, 0);
					editBuilder.replace(fullRange, rightDoc.getText());
				});

				// 保存左边文档
				await leftDoc.save();
			} else {
				vscode.window.showErrorMessage('No file to apply diff result.');
			}
		})
	);
}

export {
	registerOpenChatPanelCommand,
	registerAddContextCommand,
	registerAskForCodeCommand,
	registerAskForFileCommand,
};