/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See LICENSE.md in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
'use strict';
Object.defineProperty(exports, "__esModule", { value: true });
const vscode_1 = require("vscode");
const helper = require("../helpers/suggestSupportHelper");
const dockerComposeKeyInfo_1 = require("./dockerComposeKeyInfo");
class DockerComposeCompletionItemProvider {
    constructor() {
        this.triggerCharacters = [];
        this.excludeTokens = [];
    }
    // tslint:disable-next-line:promise-function-async // Grandfathered in
    provideCompletionItems(document, position, token) {
        let yamlSuggestSupport = new helper.SuggestSupportHelper();
        // Determine the schema version of the current compose file,
        // based on the existence of a top-level "version" property.
        let versionMatch = document.getText().match(/^version:\s*(["'])(\d+(\.\d)?)\1/im);
        let version = versionMatch ? versionMatch[2] : "1";
        // Get the line where intellisense was invoked on (e.g. 'image: u').
        let line = document.lineAt(position.line).text;
        if (line.length === 0) {
            // empty line
            return Promise.resolve(this.suggestKeys('', version));
        }
        let range = document.getWordRangeAtPosition(position);
        // Get the text where intellisense was invoked on (e.g. 'u').
        let word = range && document.getText(range) || '';
        let textBefore = line.substring(0, position.character);
        if (/^\s*[\w_]*$/.test(textBefore)) {
            // on the first token
            return Promise.resolve(this.suggestKeys(word, version));
        }
        // Matches strings like: 'image: "ubuntu'
        let imageTextWithQuoteMatchYaml = textBefore.match(/^\s*image\s*\:\s*"([^"]*)$/);
        if (imageTextWithQuoteMatchYaml) {
            let imageText = imageTextWithQuoteMatchYaml[1];
            return yamlSuggestSupport.suggestImages(imageText);
        }
        // Matches strings like: 'image: ubuntu'
        let imageTextWithoutQuoteMatch = textBefore.match(/^\s*image\s*\:\s*([\w\:\/]*)/);
        if (imageTextWithoutQuoteMatch) {
            let imageText = imageTextWithoutQuoteMatch[1];
            return yamlSuggestSupport.suggestImages(imageText);
        }
        return Promise.resolve([]);
    }
    suggestKeys(word, version) {
        // Attempt to grab the keys for the requested schema version,
        // otherwise, fall back to showing a composition of all possible keys.
        const keys = dockerComposeKeyInfo_1.default[`v${version}`] || dockerComposeKeyInfo_1.default.All;
        return Object.keys(keys).map(ruleName => {
            let completionItem = new vscode_1.CompletionItem(ruleName);
            completionItem.kind = vscode_1.CompletionItemKind.Keyword;
            completionItem.insertText = ruleName + ': ';
            completionItem.documentation = keys[ruleName];
            return completionItem;
        });
    }
}
exports.DockerComposeCompletionItemProvider = DockerComposeCompletionItemProvider;
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