'use strict';

import * as vscode from 'vscode';

import * as telemetryContracts from "../common/telemetryContracts";

import {RefactorProxy} from '../refactor/proxy';

import {getWorkspaceEditsFromPatch, getTextEdits} from '../common/editor';

import * as path from 'path';

import {PythonSettings} from '../common/configSettings';

const pythonSettings = PythonSettings.getInstance();

const EXTENSION_DIR = path.join(__dirname, '..', '..', '..');

interface RenameResponse {

results: [{ diff: string }];

}

export class PythonRenameProvider implements vscode.RenameProvider {

public provideRenameEdits(document: vscode.TextDocument, position: vscode.Position, newName: string, token: vscode.CancellationToken): Thenable<vscode.WorkspaceEdit> {

return vscode.workspace.saveAll(false).then(() => {

return this.doRename(document, position, newName, token);

});

}

private doRename(document: vscode.TextDocument, position: vscode.Position, newName: string, token: vscode.CancellationToken): Thenable<vscode.WorkspaceEdit> {

var filename = document.fileName;

if (document.lineAt(position.line).text.match(/^\s*\/\//)) {

return;

}

if (position.character <= 0) {

return;

}

var source = document.getText();

var range = document.getWordRangeAtPosition(position);

if (range == undefined || range == null || range.isEmpty) {

return;

}

const oldName = document.getText(range);

if (oldName === newName) {

return;

}

let proxy = new RefactorProxy(EXTENSION_DIR, pythonSettings, vscode.workspace.rootPath);

return new Promise<vscode.WorkspaceEdit>(resolve => {

proxy.rename<RenameResponse>(document, newName, document.uri.fsPath, range).then(response => {

//return response.results[0].diff;

const workspaceEdit = getWorkspaceEditsFromPatch(response.results.map(fileChanges => fileChanges.diff));

resolve(workspaceEdit);

});

});

}

}