import {
    Component,
    EventEmitter,
    Output,
} from '@angular/core';
import { ActivatedRoute } from '@angular/router';
import { ApiService } from 'jslib/abstractions/api.service';
import { OrganizationTaxInfoUpdateRequest } from 'jslib/models/request/organizationTaxInfoUpdateRequest';
import { TaxInfoUpdateRequest } from 'jslib/models/request/taxInfoUpdateRequest';
import { TaxRateResponse } from 'jslib/models/response/taxRateResponse';

@Component({
    selector: 'app-tax-info',
    templateUrl: 'tax-info.component.html',
})
export class TaxInfoComponent {
    @Output() onCountryChanged = new EventEmitter();

    loading: boolean = true;
    organizationId: string;
    taxInfo: any = {
        taxId: null,
        line1: null,
        line2: null,
        city: null,
        state: null,
        postalCode: null,
        country: 'US',
        includeTaxId: false,
    };

    taxRates: TaxRateResponse[];

    private pristine: any = {
        taxId: null,
        line1: null,
        line2: null,
        city: null,
        state: null,
        postalCode: null,
        country: 'US',
        includeTaxId: false,
    };

    constructor(private apiService: ApiService, private route: ActivatedRoute) { }

    async ngOnInit() {
        this.route.parent.parent.params.subscribe(async (params) => {
            this.organizationId = params.organizationId;
            if (this.organizationId) {
                try {
                    const taxInfo = await this.apiService.getOrganizationTaxInfo(this.organizationId);
                    if (taxInfo) {
                        this.taxInfo.taxId = taxInfo.taxId;
                        this.taxInfo.state = taxInfo.state;
                        this.taxInfo.line1 = taxInfo.line1;
                        this.taxInfo.line2 = taxInfo.line2;
                        this.taxInfo.city = taxInfo.city;
                        this.taxInfo.state = taxInfo.state;
                        this.taxInfo.postalCode = taxInfo.postalCode;
                        this.taxInfo.country = taxInfo.country || 'US';
                        this.taxInfo.includeTaxId = this.taxInfo.country !== 'US' && (
                            !!taxInfo.taxId
                            || !!taxInfo.line1
                            || !!taxInfo.line2
                            || !!taxInfo.city
                            || !!taxInfo.state);
                    }
                } catch { }
            } else {
                const taxInfo = await this.apiService.getTaxInfo();
                if (taxInfo) {
                    this.taxInfo.postalCode = taxInfo.postalCode;
                    this.taxInfo.country = taxInfo.country || 'US';
                }
            }
            this.pristine = Object.assign({}, this.taxInfo);
            // If not the default (US) then trigger onCountryChanged
            if (this.taxInfo.country !== 'US') {
                this.onCountryChanged.emit();
            }
        });

        const taxRates = await this.apiService.getTaxRates();
        this.taxRates = taxRates.data;
        this.loading = false;
    }

    get taxRate() {
        if (this.taxRates != null) {
            const localTaxRate = this.taxRates.find(x =>
                x.country === this.taxInfo.country &&
                x.postalCode === this.taxInfo.postalCode
            );
            return localTaxRate?.rate ?? null;
        }
    }

    getTaxInfoRequest(): TaxInfoUpdateRequest {
        if (this.organizationId) {
            const request = new OrganizationTaxInfoUpdateRequest();
            request.taxId = this.taxInfo.taxId;
            request.state = this.taxInfo.state;
            request.line1 = this.taxInfo.line1;
            request.line2 = this.taxInfo.line2;
            request.city = this.taxInfo.city;
            request.state = this.taxInfo.state;
            request.postalCode = this.taxInfo.postalCode;
            request.country = this.taxInfo.country;
            return request;
        } else {
            const request = new TaxInfoUpdateRequest();
            request.postalCode = this.taxInfo.postalCode;
            request.country = this.taxInfo.country;
            return request;
        }
    }

    submitTaxInfo(): Promise<any> {
        if (!this.hasChanged()) {
            return new Promise((resolve) => { resolve(); });
        }
        const request = this.getTaxInfoRequest();
        return this.organizationId ? this.apiService.putOrganizationTaxInfo(this.organizationId,
            request as OrganizationTaxInfoUpdateRequest) : this.apiService.putTaxInfo(request);
    }

    changeCountry() {
        if (this.taxInfo.country === 'US') {
            this.taxInfo.includeTaxId = false;
            this.taxInfo.taxId = null;
            this.taxInfo.line1 = null;
            this.taxInfo.line2 = null;
            this.taxInfo.city = null;
            this.taxInfo.state = null;
        }
        this.onCountryChanged.emit();
    }

    private hasChanged(): boolean {
        for (const key in this.taxInfo) {
            if (this.pristine.hasOwnProperty(key) && this.pristine[key] !== this.taxInfo[key]) {
                return true;
            }
        }
        return false;
    }
}