/**
 * 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, inject } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { FaIconComponent } from '@fortawesome/angular-fontawesome';
import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';
import { MatTooltip } from '@angular/material/tooltip';
import { STANDALONE_SHARED_IMPORTS } from 'app/standalone-shared.module';

import { NoticeEvent, OverdueLoan } from '../notice.component';

export interface SpeedPostDialogData {
  loan: OverdueLoan;
  notice: NoticeEvent;
}

export interface SpeedPostDialogResult {
  confirmed: boolean;
  consignmentNo?: string;
  postOffice?: string;
  bookedDate?: string;
  postage?: number;
}

@Component({
  selector: 'mifosx-speed-post-dialog',
  templateUrl: './speed-post-dialog.component.html',
  styleUrls: ['./speed-post-dialog.component.scss'],
  imports: [
    ...STANDALONE_SHARED_IMPORTS,
    CommonModule,
    FormsModule,
    FaIconComponent,
    MatTooltip
  ]
})
export class SpeedPostDialogComponent {
  private dialogRef = inject(MatDialogRef<SpeedPostDialogComponent, SpeedPostDialogResult>);
  data: SpeedPostDialogData = inject(MAT_DIALOG_DATA);

  consignmentNo = '';
  postOffice = '';
  bookedDate = todayIso();
  postage: number | null = 45;

  /** Suggested India-post Speed Post 13-char article ID format: 2 letters + 9 digits + 2 letters
      (e.g. "EM123456789IN"). Loose pattern — operator can paste any tracking ID. */
  readonly consignmentPattern = /^[A-Z]{2}\d{9}[A-Z]{2}$|^[A-Za-z0-9]{6,20}$/;

  get isConsignmentValid(): boolean {
    const c = (this.consignmentNo || '').trim();
    return c.length >= 6 && this.consignmentPattern.test(c);
  }

  get isFormValid(): boolean {
    return this.isConsignmentValid && (this.postOffice || '').trim().length >= 2 && !!this.bookedDate;
  }

  /** Force the consignment number to uppercase for the India-Post-style ID. */
  upperCaseConsignment(value: string): void {
    this.consignmentNo = (value || '').toUpperCase();
  }

  confirm(): void {
    if (!this.isFormValid) return;
    this.dialogRef.close({
      confirmed: true,
      consignmentNo: this.consignmentNo.trim(),
      postOffice: this.postOffice.trim(),
      bookedDate: this.bookedDate,
      postage: this.postage != null ? Number(this.postage) : undefined
    });
  }

  cancel(): void {
    this.dialogRef.close({ confirmed: false });
  }
}

function todayIso(): string {
  const d = new Date();
  const pad = (n: number) => String(n).padStart(2, '0');
  return `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())}`;
}