import { Inject, Injectable, OnApplicationBootstrap } from '@nestjs/common';
import { DocumentLineItem, DocumentLineItemStatusChangedEvent, DocumentStatusType, EventBus, Logger, PhoenixPlugin, PluginCommonModule } from '@phoenix/core';

// Example service for the plugin
@Injectable()
export class AmplidService {

    getPluginInfo() {
        return {
            name: 'AmplidPlugin',
            version: '1.0.0',
            description: ''
        };
    }
}

// The main plugin class using the PhoenixPlugin decorator
@PhoenixPlugin({
    imports: [PluginCommonModule],
    controllers: [],
    providers: [AmplidService],
    exports: [AmplidService]
})
export class AmplidPlugin implements OnApplicationBootstrap {

    private customFieldForBestellteMenge = 'bestellteMenge'; //bestellteMenge

    @Inject(EventBus)
    private readonly eventBus!: EventBus;

    // Required static init method for Phoenix plugins
    static init(): typeof AmplidPlugin {
        console.log('AmplidPlugin initialized');
        return AmplidPlugin;
    }

    async onApplicationBootstrap() {
        this.setupEvents();
    }

    setupEvents() {
        this.eventBus.ofType(DocumentLineItemStatusChangedEvent).subscribe(async (event) => {
            if (event.newStatus == DocumentStatusType.COMPLETED) {

                let bestellteMenge = +event.dli.customFields?.[this.customFieldForBestellteMenge];

                if (bestellteMenge && bestellteMenge > 0) {
                    if (bestellteMenge == event.dli.quantity && event.dli.openQuantity == 0) {
                        //we are good, we can keep it being completed
                    } else {
                        //we need to change the status to inwork
                        Logger.info(`Changing status to inwork for DocumentLineItem ${event.dli.id} because bestellteMenge ${bestellteMenge} is not equal to quantity ${event.dli.quantity} and openQuantity ${event.dli.openQuantity}`);
                        event.dli.status = DocumentStatusType.INWORK;
                        await DocumentLineItem.update(event.dli.id, { status: DocumentStatusType.INWORK });
                    }
                }
            }
        });
    }
}