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 UICompleter implements Completer {
    public projectPath: string;

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

    getItems(): CompletionItem[] {
        const uiPath: string = "_eko_/ui.json";
        const completionsPath = path.join(this.projectPath, uiPath);
        let completionJson: { gui: object[] } = { gui: [{}] };
        let result: CompletionItem[] = [];

        fs.readFileSync(completionsPath, "utf8");
        completionJson = JSON.parse(
            fs.readFileSync(completionsPath, "utf8")
        );
        result = completionJson.gui.map(
            (uiElement: { id: string; component: string }) => {
                return {
                    label: uiElement.id,
                    kind: CompletionItemKind.Constant,
                    detail: uiElement.component
                };
            }
        );
        return result;
    }
}