/**
 * 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/.
 */

/**
 * A one-page issuance-slip PDF for a cheque book already issued to an account — the "Cheque Book"
 * print action was previously a dead menu stub. This is a record of the issuance itself (which
 * book/series, leaf range, issued-to account, issue date, branch), not a physical cheque leaf.
 */

import { jsPDF } from 'jspdf';

const BANK_NAME = 'Nexora Co-operative Bank Ltd.';
const C_TEXT: [number, number, number] = [
  15,
  23,
  42
];
const C_MUTED: [number, number, number] = [
  100,
  116,
  139
];
const C_BORDER: [number, number, number] = [
  226,
  232,
  240
];
const ACCENT: [number, number, number] = [
  30,
  64,
  175
];

function formatDate(iso: string | null | undefined): string {
  if (!iso) return '—';
  const d = new Date(iso);
  if (isNaN(d.getTime())) return String(iso);
  return d.toLocaleDateString('en-IN', { day: '2-digit', month: 'short', year: 'numeric' });
}

export interface ChequeIssuanceSlipBook {
  id: number | string;
  accountNo?: string;
  clientName?: string;
  accountType?: string;
  officeName?: string;
  seriesCode?: string;
  rangeStart?: string | number;
  rangeEnd?: string | number;
  noOfBooks?: number;
  status?: string;
  issueDate?: string;
}

export function buildChequeIssuanceSlipPdf(book: ChequeIssuanceSlipBook): jsPDF {
  const doc = new jsPDF({ unit: 'mm', format: 'a5' });
  const pageWidth = doc.internal.pageSize.getWidth();
  const margin = 12;
  let y = 16;

  doc.setFillColor(...ACCENT);
  doc.rect(0, 0, pageWidth, 4, 'F');

  doc.setFont('helvetica', 'bold');
  doc.setFontSize(14);
  doc.setTextColor(...C_TEXT);
  doc.text(BANK_NAME, margin, y);
  y += 6;

  doc.setFont('helvetica', 'normal');
  doc.setFontSize(10);
  doc.setTextColor(...C_MUTED);
  doc.text('Cheque Book Issuance Slip', margin, y);
  y += 8;

  doc.setDrawColor(...C_BORDER);
  doc.line(margin, y, pageWidth - margin, y);
  y += 8;

  const row = (label: string, value: string) => {
    doc.setFont('helvetica', 'bold');
    doc.setFontSize(9);
    doc.setTextColor(...C_MUTED);
    doc.text(label, margin, y);
    doc.setFont('helvetica', 'normal');
    doc.setFontSize(10.5);
    doc.setTextColor(...C_TEXT);
    doc.text(value, margin + 45, y);
    y += 7;
  };

  row('Issuance ID', String(book.id ?? '—'));
  row('Account No.', book.accountNo ?? '—');
  row('Account Holder', book.clientName ?? '—');
  row('Account Type', book.accountType ?? '—');
  row('Branch', book.officeName ?? '—');
  row('Series', book.seriesCode ?? '—');
  row('Leaf Range', book.rangeStart != null && book.rangeEnd != null ? `${book.rangeStart} – ${book.rangeEnd}` : '—');
  row('No. of Books', String(book.noOfBooks ?? '—'));
  row('Status', book.status ?? '—');
  row('Issue Date', formatDate(book.issueDate));

  y += 6;
  doc.setDrawColor(...C_BORDER);
  doc.line(margin, y, pageWidth - margin, y);
  y += 14;

  doc.setFont('helvetica', 'normal');
  doc.setFontSize(9);
  doc.setTextColor(...C_MUTED);
  doc.text('Issued by: ______________________', margin, y);
  doc.text('Received by: ______________________', margin, y + 16);

  return doc;
}