/**
 * 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, OnInit } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { FaIconComponent } from '@fortawesome/angular-fontawesome';
import { MatDialog } from '@angular/material/dialog';
import { MatSnackBar } from '@angular/material/snack-bar';
import { MatTooltip } from '@angular/material/tooltip';
import { STANDALONE_SHARED_IMPORTS } from 'app/standalone-shared.module';

import {
  CertificatePreviewDialogComponent,
  CertificatePreviewDialogData
} from '../certificate-preview-dialog/certificate-preview-dialog.component';
import { downloadShareCertificatePdf, setBankIdentity } from '../certificate-pdf';
import { DscSignService } from '../../dsc-sign-dialog/dsc-sign.service';
import { OrganizationService } from '../../../organization/organization.service';
import { RealShareAccountsViewComponent } from './real-share-accounts-view/real-share-accounts-view.component';

export type ShareClass = 'ORDINARY' | 'PREFERENCE';

export interface ShareCertificateRecord {
  certificateNo: string;
  folioNo: string;
  memberId: string;
  memberName: string;
  memberPan: string;
  memberAddress: string;
  branch: string;
  joiningDate: string;
  shareClass: ShareClass;
  shareCount: number;
  faceValue: number;
  issueDate: string;
  /** Distinct numeric range of share numbers held (e.g. 1001–1100). */
  shareNoFrom: number;
  shareNoTo: number;
  /** Total dividend received since joining. */
  dividendYtd: number;
}

@Component({
  selector: 'mifosx-share-certificate',
  templateUrl: './share-certificate.component.html',
  styleUrls: ['../certificates.shared.scss'],
  imports: [
    ...STANDALONE_SHARED_IMPORTS,
    CommonModule,
    FormsModule,
    FaIconComponent,
    MatTooltip,
    RealShareAccountsViewComponent
  ]
})
export class ShareCertificateComponent implements OnInit {
  private dialog = inject(MatDialog);
  private snack = inject(MatSnackBar);
  private dscSign = inject(DscSignService);
  private organizationService = inject(OrganizationService);

  /** Toggles between the static sample table and the live m_share_account view. */
  viewMode: 'demo' | 'real' = 'demo';

  // ── Filters ──
  search = '';
  classFilter: '' | ShareClass = '';
  branchFilter = '';

  records: ShareCertificateRecord[] = [];

  readonly classOptions: { value: ShareClass; label: string }[] = [
    { value: 'ORDINARY', label: 'Ordinary' },
    { value: 'PREFERENCE', label: 'Preference' }
  ];

  ngOnInit(): void {
    this.records = seedShareCertificates();

    // Download here builds the PDF directly, without necessarily opening the preview dialog first,
    // so this list must set the shared bank identity itself.
    this.organizationService.getInstitutionProfile().subscribe({
      next: (profile: any) => setBankIdentity(profile || {}),
      error: () => {}
    });
  }

  // ── Derived list ──
  get filteredRecords(): ShareCertificateRecord[] {
    const q = this.search.trim().toLowerCase();
    const branch = this.branchFilter.trim().toLowerCase();
    return this.records.filter((r) => {
      if (this.classFilter && r.shareClass !== this.classFilter) return false;
      if (branch && !r.branch.toLowerCase().includes(branch)) return false;
      if (!q) return true;
      return (
        r.certificateNo.toLowerCase().includes(q) ||
        r.folioNo.toLowerCase().includes(q) ||
        r.memberId.toLowerCase().includes(q) ||
        r.memberName.toLowerCase().includes(q) ||
        r.memberPan.toLowerCase().includes(q)
      );
    });
  }

  get branchOptions(): string[] {
    return Array.from(new Set(this.records.map((r) => r.branch))).sort();
  }

  classLabel(c: ShareClass): string {
    return this.classOptions.find((o) => o.value === c)?.label || c;
  }

  totalShares(): number {
    return this.filteredRecords.reduce((s, r) => s + r.shareCount, 0);
  }

  totalShareValue(): number {
    return this.filteredRecords.reduce((s, r) => s + r.shareCount * r.faceValue, 0);
  }

  // ── Actions ──
  clearFilters(): void {
    this.search = '';
    this.classFilter = '';
    this.branchFilter = '';
  }

  viewCertificate(r: ShareCertificateRecord): void {
    const data: CertificatePreviewDialogData = {
      kind: 'share',
      shareCertificate: r
    };
    this.dialog.open(CertificatePreviewDialogComponent, {
      width: '880px',
      maxWidth: '96vw',
      maxHeight: '92vh',
      autoFocus: false,
      panelClass: 'cert-preview-dialog',
      data
    });
  }

  downloadCertificate(r: ShareCertificateRecord): void {
    this.dscSign.promptThenDownload(
      {
        title: 'Share Certificate',
        reference: `${r.certificateNo} · Folio ${r.folioNo} · ${r.memberName}`,
        filename: `Share-Certificate-${r.certificateNo}.pdf`
      },
      (dsc) => downloadShareCertificatePdf(r, dsc)
    );
  }

  /** Switches between the static sample table and the live m_share_account view. */
  toggleViewMode(): void {
    this.viewMode = this.viewMode === 'demo' ? 'real' : 'demo';
  }
}

// ───────────────────── Mock seed (top-level export) ─────────────────────
export function seedShareCertificates(): ShareCertificateRecord[] {
  return [
    {
      certificateNo: 'SC-2024-000123',
      folioNo: 'F-00482',
      memberId: 'MBR000482',
      memberName: 'Rohan S. Mehta',
      memberPan: 'ABCPM1234E',
      memberAddress: 'Flat 902, Skyline Apt, Andheri (E), Mumbai 400069',
      branch: 'Mumbai — Andheri (E)',
      joiningDate: '2018-04-22',
      shareClass: 'ORDINARY',
      shareCount: 100,
      faceValue: 100,
      issueDate: '2018-04-22',
      shareNoFrom: 48201,
      shareNoTo: 48300,
      dividendYtd: 7200
    },
    {
      certificateNo: 'SC-2024-000124',
      folioNo: 'F-00713',
      memberId: 'MBR000713',
      memberName: 'Anita Verma',
      memberPan: 'EFGHV5678A',
      memberAddress: 'B-12, Connaught Pl, New Delhi 110001',
      branch: 'New Delhi — Connaught Place',
      joiningDate: '2019-08-11',
      shareClass: 'ORDINARY',
      shareCount: 50,
      faceValue: 100,
      issueDate: '2019-08-11',
      shareNoFrom: 71301,
      shareNoTo: 71350,
      dividendYtd: 3000
    },
    {
      certificateNo: 'SC-2024-000125',
      folioNo: 'F-01102',
      memberId: 'MBR001102',
      memberName: 'Karthik Rao',
      memberPan: 'PQRSR2233Z',
      memberAddress: '24, MG Road, Bengaluru 560001',
      branch: 'Bengaluru — MG Road',
      joiningDate: '2020-02-04',
      shareClass: 'ORDINARY',
      shareCount: 200,
      faceValue: 100,
      issueDate: '2020-02-04',
      shareNoFrom: 110201,
      shareNoTo: 110400,
      dividendYtd: 14400
    },
    {
      certificateNo: 'SC-2024-000126',
      folioNo: 'F-01277',
      memberId: 'MBR001277',
      memberName: 'Madhavi Singh',
      memberPan: 'TUVWS3344K',
      memberAddress: 'D-5, Greater Kailash, New Delhi 110048',
      branch: 'New Delhi — Connaught Place',
      joiningDate: '2017-11-19',
      shareClass: 'PREFERENCE',
      shareCount: 75,
      faceValue: 1000,
      issueDate: '2017-11-19',
      shareNoFrom: 12721,
      shareNoTo: 12795,
      dividendYtd: 67500
    },
    {
      certificateNo: 'SC-2024-000127',
      folioNo: 'F-01498',
      memberId: 'MBR001498',
      memberName: 'Vikram Joshi',
      memberPan: 'LMNOJ9988X',
      memberAddress: 'Office 3B, Koregaon Park Road, Pune 411001',
      branch: 'Pune — Koregaon Park',
      joiningDate: '2016-06-30',
      shareClass: 'PREFERENCE',
      shareCount: 250,
      faceValue: 1000,
      issueDate: '2016-06-30',
      shareNoFrom: 14981,
      shareNoTo: 15230,
      dividendYtd: 225000
    },
    {
      certificateNo: 'SC-2024-000128',
      folioNo: 'F-01902',
      memberId: 'MBR001902',
      memberName: 'Lakshmi Naidu',
      memberPan: 'XYZAN7788Q',
      memberAddress: 'Plot 14, Road No. 3, Banjara Hills, Hyderabad 500034',
      branch: 'Hyderabad — Banjara Hills',
      joiningDate: '2021-03-15',
      shareClass: 'ORDINARY',
      shareCount: 30,
      faceValue: 100,
      issueDate: '2021-03-15',
      shareNoFrom: 190201,
      shareNoTo: 190230,
      dividendYtd: 1800
    },
    {
      certificateNo: 'SC-2024-000129',
      folioNo: 'F-02011',
      memberId: 'MBR002011',
      memberName: 'Arjun Banerjee',
      memberPan: 'TUVWB4455F',
      memberAddress: '42, Park Street, Kolkata 700016',
      branch: 'Kolkata — Park Street',
      joiningDate: '2021-09-08',
      shareClass: 'ORDINARY',
      shareCount: 40,
      faceValue: 100,
      issueDate: '2021-09-08',
      shareNoFrom: 201101,
      shareNoTo: 201140,
      dividendYtd: 2400
    }
  ];
}