import { EventsHandler, IEventHandler } from "@nestjs/cqrs";
import { CouchService } from "../../data/services/couch.service";
import { STATUS } from "src/core/strings/constants/base.constants";
import { UserDeletedEvent } from "src/modules/user-related/user/domain/entities/event/user-deleted.event";
import { UserChangeStatusEvent } from "src/modules/user-related/user/domain/entities/event/user-change-status.event";
import { UserUpdatedEvent } from "src/modules/user-related/user/domain/entities/event/user-updated.event";
import { UserDataService } from "src/modules/user-related/user/data/services/user-data.service";

@EventsHandler(UserDeletedEvent)
export class UserDeletedHandler implements IEventHandler<UserDeletedEvent> {
    constructor(
        private couchService: CouchService
    ) { }

    async handle(event: UserDeletedEvent) {
        const data = await this.couchService.deleteDoc({
            _id: event.data.id,
            ...event.data.data
        }, 'user');
    }
}

@EventsHandler(UserChangeStatusEvent, UserUpdatedEvent)
export class UserUpdatedHandler implements IEventHandler<UserChangeStatusEvent> {
    constructor(
        private couchService: CouchService,
        private userService: UserDataService,
    ) { }

    async handle(event: UserChangeStatusEvent) {

        const dataOld = event.data.old;
        const data = event.data.data;
        const user = await this.userService.getOneByOptions({
            where: {
                id: data.id
            },
            relations: [
                'user_privilege',
                'user_privilege.user_privilege_configurations'
            ]
        }).then(item => {
            const user_privilege_configurations = item['user_privilege']?.user_privilege_configurations?.filter(config => config.module == "POS")
            Object.assign(item['user_privilege'], {
                user_privilege_configurations: user_privilege_configurations
            })
            return item
        })

        // change status to active
        if (dataOld?.status != data.status && data.status == STATUS.ACTIVE) {
            await this.couchService.createDoc(
                {
                    _id: data.id,
                    ...user
                },
                'user'
            );
        }

        else if (dataOld?.status != data.status) {
            await this.couchService.deleteDoc(
                {
                    _id: data.id,
                    ...user
                },
                'user'
            );
        }

        // update
        else {
            await this.couchService.updateDoc(
                {
                    _id: data.id,
                    ...user
                },
                'user'
            );
        }
    }
}