import { EngineResultsTracker } from "."
import { Engine, FeatureFlag } from "./engines"

export class EngineError extends Error {
    constructor(message?: string, options?: ErrorOptions) {
        super(message, options)
    }
}

export class TimeoutError extends Error {
    constructor(message?: string, options?: ErrorOptions) {
        super(message, options)
    }
}

export class NoEnginesLeftError extends Error {
    public fallbackList: Engine[];
    public results: EngineResultsTracker;

    constructor(fallbackList: Engine[], results: EngineResultsTracker) {
        super("All scraping engines failed!");
        this.fallbackList = fallbackList;
        this.results = results;
    }
}

export class AddFeatureError extends Error {
    public featureFlags: FeatureFlag[];

    constructor(featureFlags: FeatureFlag[]) {
        super("New feature flags have been discovered: " + featureFlags.join(", "));
        this.featureFlags = featureFlags;
    }
}