/**
 * Copyright since 2025 Mifos Initiative
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

import { Component, OnInit, inject } from '@angular/core';
import { UntypedFormBuilder, UntypedFormGroup } from '@angular/forms';
import { catchError, of } from 'rxjs';
import { STANDALONE_SHARED_IMPORTS } from 'app/standalone-shared.module';
import { OrganizationService } from '../organization.service';
import { SettingsService } from 'app/settings/settings.service';
import { DISABLED_ACCOUNTING_FEATURES } from '../../accounting/disabled-features';

const BANK_TYPES = [
  { value: 'COOPERATIVE', label: 'Co-operative Bank' },
  { value: 'COMMERCIAL', label: 'Commercial Bank' },
  { value: 'RRB', label: 'Regional Rural Bank' },
  { value: 'NBFC', label: 'NBFC' },
  { value: 'OTHER', label: 'Other' }
];

const OWNERSHIP_TYPES = [
  { value: 'GOVERNMENT', label: 'Government' },
  { value: 'PRIVATE', label: 'Private' },
  { value: 'COOPERATIVE', label: 'Cooperative' },
  { value: 'OTHER', label: 'Other' }
];

const LICENSE_STATUSES = [
  { value: 'ACTIVE', label: 'Active' },
  { value: 'EXPIRED', label: 'Expired' },
  { value: 'SUSPENDED', label: 'Suspended' },
  { value: 'NOT_APPLICABLE', label: 'Not Applicable' }
];

const STATUSES = [
  { value: 'ACTIVE', label: 'Active' },
  { value: 'INACTIVE', label: 'Inactive' }
];

/**
 * The bank's own "Bank Master" profile — identity/classification, regulatory details, address
 * (registered, with optional head-office/communication overrides), contact, the institution-level
 * banking identifier (SWIFT/BIC), document header names and terms, the authorised representative,
 * and audit fields. A singleton screen: there is only ever one institution running this tenant.
 *
 * IFSC/MICR are deliberately NOT here — those identify a specific branch, not the institution, and
 * live on Branch Profile instead. Business Date, Financial Year, Time Zone, Working Days and Holiday
 * Calendar are likewise not stored here — they already exist as their own configuration, and this
 * screen only links to them (see the Operational Configuration section) instead of holding a second,
 * driftable copy.
 */
@Component({
  selector: 'mifosx-institution-profile',
  templateUrl: './institution-profile.component.html',
  styleUrls: ['./institution-profile.component.scss'],
  imports: [...STANDALONE_SHARED_IMPORTS]
})
export class InstitutionProfileComponent implements OnInit {
  private formBuilder = inject(UntypedFormBuilder);
  private organizationService = inject(OrganizationService);
  private settingsService = inject(SettingsService);

  /** Accounting features switched off for this installation — see accounting/disabled-features.ts. */
  disabledFeatures = DISABLED_ACCOUNTING_FEATURES;
  bankTypes = BANK_TYPES;
  ownershipTypes = OWNERSHIP_TYPES;
  licenseStatuses = LICENSE_STATUSES;
  statuses = STATUSES;

  form: UntypedFormGroup;
  loading = true;
  saving = false;
  errorMsg = '';
  successMsg = '';
  currencyCode = '';
  audit: any = null;

  private static readonly DATE_FIELDS = [
    'establishedDate',
    'registrationDate',
    'licenseExpiryDate'
  ];

  ngOnInit(): void {
    this.form = this.formBuilder.group({
      bankName: [''],
      legalName: [''],
      shortName: [''],
      bankCode: [''],
      institutionCode: [''],
      bankType: [null],
      ownershipType: [null],
      parentInstitutionName: [''],
      establishedDate: [null],
      status: ['ACTIVE'],
      country: ['India'],

      registrationNumber: [''],
      licenseNumber: [''],
      regulatoryAuthority: [''],
      registrationDate: [null],
      licenseStatus: [null],
      licenseExpiryDate: [null],
      pan: [''],
      tan: [''],
      gstin: [''],

      addressLine1: [''],
      addressLine2: [''],
      city: [''],
      district: [''],
      state: [''],
      pincode: [''],
      headOfficeSameAsRegistered: [true],
      headOfficeAddress: [''],
      communicationSameAsRegistered: [true],
      communicationAddress: [''],

      contactPhone: [''],
      contactEmail: [''],
      customerCareNumber: [''],
      grievanceEmail: [''],
      website: [''],

      swiftBic: [''],

      statementHeaderName: [''],
      passbookHeaderName: [''],
      receiptHeaderName: [''],
      termsAndConditions: [''],

      authorizedPersonName: [''],
      authorizedPersonDesignation: [''],
      authorizedPersonContact: [''],
      authorizedPersonEmail: ['']
    });
    this.load();
  }

  load(): void {
    this.loading = true;
    this.errorMsg = '';
    this.organizationService
      .getInstitutionProfile()
      .pipe(
        catchError((err: any) => {
          this.errorMsg = err?.error?.errors?.[0]?.defaultUserMessage ?? 'Could not load the bank profile.';
          return of(null);
        })
      )
      .subscribe((res: any) => {
        this.loading = false;
        if (!res) return;
        this.applyResult(res);
        this.form.markAsPristine();
      });
  }

  submit(): void {
    if (this.saving) return;
    this.saving = true;
    this.errorMsg = '';
    this.successMsg = '';
    const raw = this.form.value;
    const payload: any = { ...raw, locale: this.settingsService.language.code };
    for (const field of InstitutionProfileComponent.DATE_FIELDS) {
      payload[field] = raw[field] ? this.formatDate(raw[field]) : null;
    }
    this.organizationService
      .updateInstitutionProfile(payload)
      .pipe(
        catchError((err: any) => {
          this.saving = false;
          this.errorMsg = err?.error?.errors?.[0]?.defaultUserMessage ?? 'Could not save the bank profile.';
          return of(null);
        })
      )
      .subscribe((res: any) => {
        this.saving = false;
        if (!res) return;
        if (res.rollbackTransaction) {
          // Parked for checker approval - the profile has not actually changed yet, so the form must
          // not be patched with the submitted (not-yet-applied) values as if it had.
          this.successMsg = 'Bank profile update has been submitted for approval.';
          this.form.markAsPristine();
          return;
        }
        this.successMsg = 'Bank profile saved.';
        // The response is now a CommandProcessingResult, not the updated row (the write goes through
        // the command pipeline) - reload the saved row from the server instead of patching the form
        // from this response.
        this.load();
      });
  }

  private applyResult(res: any): void {
    const patch: any = { ...res };
    for (const field of InstitutionProfileComponent.DATE_FIELDS) {
      patch[field] = res[field] ? new Date(res[field]) : null;
    }
    this.form.patchValue(patch);
    this.currencyCode = res.currencyCode ?? '';
    this.audit = {
      createdBy: res.createdByUsername,
      createdAt: res.createdAt,
      updatedBy: res.updatedByUsername,
      updatedAt: res.updatedAt,
      activationDate: res.activationDate,
      deactivationDate: res.deactivationDate
    };
  }

  private formatDate(d: Date): string {
    return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`;
  }
}