import { IKeywordOptions } from "../interfaces";

export class Keywords {

    readonly keywords: IKeywordOptions["keywords"];
    readonly type: IKeywordOptions["type"];

    constructor({ keywords, type }: IKeywordOptions) {
        this.keywords = keywords;
        this.type = type;
    }

    check(text: string | void): boolean {
        if (this.keywords.length && text) {
            const match = this.keywords.some((keyword) => text.match(
                new RegExp(keyword, "gi")
            ));

            return this.reverse(match);
        }

        return true;
    }

    private reverse(value: boolean) {
        return this.type === "keywords" ?
            value
            :
            !value;
    }
}