import Modifier from "./Modifier";
import Segment from "../../track/Segment";

export class HConcatOne extends Modifier {
    static use = (s1: Segment, sIn2: Segment) => {
        const s2 = sIn2.clone();
        s2.trackChords.forEach(n => n.offset.add(s1.duration));
        s1.trackChords.concat(s2.trackChords);
        s2.automations.forEach(a => a.forward(s1.duration));
        s2.automations.forEach((a2) => {
            const $find = s1.automations.findIndex(a1 => a1.path === a2.path);
            if ($find === -1) s1.automations.push(a2);
            else s1.automations[$find].points.concat(a2.points);
        });
        s1.duration.add(s2.duration);
        return s1;
    };
}

export class HConcat extends Modifier {
    static use = (s1: null, segments: Segment[]) => {
        return segments.reduce((s1, s2) => HConcatOne.use(s1, s2));
    };
}

export default HConcat;