import BullpenPitch from "@/types/BullpenPitch";
import User from "@/types/User";
import PitchType from "@/types/PitchType";

export class BullpenSessionService {
    private static instance: BullpenSessionService;
    private static nullPitcher: User = {
        id: 0,
        firstName: "",
        lastName: "",
        email: "",
        password: "",
        dateOfBirth: new Date(0),
        createdAt: new Date(0),
        updatedAt: new Date(0),
    };
    private static nullPitchType: PitchType = {
        id: 0,
        name: "",
        abbreviation: ""
    }

    private constructor() {
        this.currentPitch = this.createPitch();
    }

    // Static method to get the instance of the service
    public static getInstance(): BullpenSessionService {
        if (!BullpenSessionService.instance) {
            BullpenSessionService.instance = new BullpenSessionService();
        }
        return BullpenSessionService.instance;
    }

    public startSession(pitcher: User): void {
        this.pitcher = pitcher;
        this.pitches = [];
        this.currentPitch = this.createPitch();
    }

    public clear(): void {
        this.pitcher = BullpenSessionService.nullPitcher;
        this.pitches = [];
    }

    public finishSession(): void {
        // Todo: save to backend
    }
    public cancelSession(): void {
        this.pitches = [];
        this.pitcher = BullpenSessionService.nullPitcher;
    }

    public addBullpenPitch( bullpenPitch: BullpenPitch ): void {
        this.pitches.push( bullpenPitch );
    }

    public getBullpenPitches(): BullpenPitch[] {
        return this.pitches;
    }

    public currentBullpenPitch(): BullpenPitch {
        return this.currentPitch;
    }

    public nextPitch(): void {
        this.pitches.push(this.currentBullpenPitch());
        this.currentPitch = this.createPitch();
    }

    public getPitcher(): User {
        return this.pitcher;
    }

    public isSessionStarted(): boolean {
        return this.pitcher.id === 0;
    }

    private createPitch(): BullpenPitch {
        return {
            id: 0,
            date: new Date(),
            pitchType: BullpenSessionService.nullPitchType,
            plannedPitchArea: 0,
            realPitchArea: 0,
            realPitchSubArea: 0
        }
    }
    private pitches: BullpenPitch[] = [];
    private pitcher: User = BullpenSessionService.nullPitcher;
    private currentPitch: BullpenPitch;
}

export const bullpenSessionService = BullpenSessionService.getInstance();