/*---------------------------------------------------------------------------------------------

* Copyright (c) Microsoft Corporation. All rights reserved.

* Licensed under the MIT License. See License.txt in the project root for license information.

*--------------------------------------------------------------------------------------------*/

'use strict';

import { HoverProvider, Hover, MarkedString, TextDocument, CancellationToken, Position, workspace } from 'vscode';

import phpGlobals = require('./phpGlobals');

import { textToMarkedString } from './utils/markedTextUtil';

export default class PHPHoverProvider implements HoverProvider {

public provideHover(document: TextDocument, position: Position, token: CancellationToken): Hover {

let enable = workspace.getConfiguration('php').get<boolean>('suggest.basic', true);

if (!enable) {

return null;

}

let wordRange = document.getWordRangeAtPosition(position);

if (!wordRange) {

return;

}

let name = document.getText(wordRange);

var entry = phpGlobals.globalfunctions[name] || phpGlobals.compiletimeconstants[name] || phpGlobals.globalvariables[name] || phpGlobals.keywords[name];

if (entry && entry.description) {

let signature = name + (entry.signature || '');

let contents: MarkedString[] = [textToMarkedString(entry.description), { language: 'php', value: signature }];

return new Hover(contents, wordRange);

}

}

}