import * as path from "path";
import * as fs from "fs";
import Completer from "../../interfaces/Completer";
import {
    CompletionItemKind,
    CompletionItem
} from "vscode-languageserver/lib/main";

export default class NodeCompleter implements Completer {
    public projectPath: string;

    setPath(projectPath: string) {
        this.projectPath = projectPath;
    }

    getItems(): CompletionItem[] {
        const idsPath = "_eko_/js/auto_generated/nodes";
        let completionsPath = path.join(this.projectPath, idsPath);
        let result: CompletionItem[] = [];

        fs.accessSync(
            completionsPath,
            fs.constants.F_OK | fs.constants.W_OK
        );
        result = fs.readdirSync(completionsPath).map(
            (filename: string): CompletionItem => {
                return {
                    label: filename.replace(path.extname(filename), ""),
                    kind: CompletionItemKind.Constant,
                    detail: "Node"
                };
            }
        );

        return result;
    }
}