import { Translator } from "../i18n/api";

export type Speaker = {
    id: string,
    language : string,
}

export class Message {
    public translation? : string;
    constructor (public text : string, public speaker : Speaker) {}

    public async translate(translator : Translator, language? : string) {
        this.translation = await translator.translate(this.text, language);
    }
}

export class Conversation extends Array<Message> {
    constructor (
        private translator : Translator,
        public s1 : Speaker,
        public s2 : Speaker,
    ) {
        super();
    }

    public addMessage(speaker : Speaker, text : string) {
        this.push(new Message(text, speaker));
    }

    public async translateMessage(i : number) {
        if (!this[i]) throw new Error(`${i} is not a valid message number`);
        const otherSpeaker = this[i].speaker.id === this.s1.id ? this.s2 : this.s1
        await this[i].translate(this.translator, otherSpeaker.language);
    }

    public async translateLast() {
        return await this.translateMessage(this.length-1);
    }
}