/**
 * 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 { MatDialogModule, MatDialogRef, MAT_DIALOG_DATA } from '@angular/material/dialog';
import { MatButtonModule } from '@angular/material/button';
import { MatIconModule } from '@angular/material/icon';
import { VoucherStatusComponent, VoucherStatus } from '../voucher-status/voucher-status.component';

export interface VoucherDetailDialogData {
  /** Already-loaded detail from CashierService.voucherDetail() — the caller fetches, this dialog
   *  only renders, so one loading state lives in the row's own click handler rather than being
   *  duplicated inside every dialog that could ever show a voucher. */
  detail: {
    voucherNo: string;
    voucherStatus?: VoucherStatus;
    revokedByVoucherNo?: string | null;
    replacesVoucherNo?: string | null;
    correctionNote?: string | null;
    voucherType: string | null;
    amount: number | null;
    branchName: string | null;
    createdBy: string | null;
    createdAt: string | null;
    totalDebit: number;
    totalCredit: number;
    balanced: boolean;
    lines: {
      lineNo: number;
      entryType: 'DR' | 'CR';
      partyName: string | null;
      accountNo: string | null;
      amount: number;
      description: string | null;
    }[];
    /** GL entries a native platform command posted for the same underlying event, outside this
     *  voucher entirely — a share redemption's Dr Share Capital / Cr Share Sundry pair, posted at
     *  manager approval, before this voucher's own Dr Sundry / Cr Cash at Vault settlement leg even
     *  exists. Empty for every voucher that already is the whole transaction on its own. */
    relatedLines: {
      stage: string;
      entryType: 'DR' | 'CR';
      partyName: string | null;
      accountNo: string | null;
      amount: number;
      description: string | null;
    }[];
  };
}

/** The full slip behind a summarised register row — every debit and credit line a voucher is
 *  made of, not just the first side of each that a table row has room for. */
@Component({
  selector: 'mifosx-voucher-detail-dialog',
  standalone: true,
  imports: [
    CommonModule,
    MatDialogModule,
    MatButtonModule,
    MatIconModule,
    VoucherStatusComponent
  ],
  template: `
    <div class="vd-shell">
      <div class="vd-header">
        <div class="vd-header__title">
          <mat-icon class="vd-icon">receipt_long</mat-icon>
          <div>
            <h2>
              {{ detail.voucherNo }}
              <mifosx-voucher-status
                [status]="detail.voucherStatus"
                [revokedBy]="detail.revokedByVoucherNo"
                [replaces]="detail.replacesVoucherNo"
                [note]="detail.correctionNote"
              ></mifosx-voucher-status>
            </h2>
            <p>{{ detail.voucherType || 'Voucher' }} &middot; {{ detail.branchName || 'Head Office' }}</p>
          </div>
        </div>
        <button mat-icon-button mat-dialog-close aria-label="Close">
          <mat-icon>close</mat-icon>
        </button>
      </div>

      <div class="vd-meta">
        <span
          >Raised by <strong>{{ detail.createdBy || '—' }}</strong></span
        >
        @if (detail.createdAt) {
          <span>{{ detail.createdAt | date: 'dd MMM yyyy, h:mm a' }}</span>
        }
        @if (!detail.balanced) {
          <span class="vd-unbalanced">
            <mat-icon inline>warning</mat-icon>
            Debit and credit do not balance
          </span>
        }
      </div>

      <table class="vd-table">
        <thead>
          <tr>
            <th>Side</th>
            <th>Party</th>
            <th>Account No.</th>
            <th class="num">Amount</th>
          </tr>
        </thead>
        <tbody>
          @for (line of detail.lines; track line.lineNo) {
            <tr>
              <td>
                <span
                  class="vd-side"
                  [class.vd-side--dr]="line.entryType === 'DR'"
                  [class.vd-side--cr]="line.entryType === 'CR'"
                >
                  {{ line.entryType === 'DR' ? 'Debit' : 'Credit' }}
                </span>
              </td>
              <td>{{ line.partyName || '—' }}</td>
              <td class="vd-acct">{{ line.accountNo || '—' }}</td>
              <td class="num">₹{{ line.amount | number: '1.2-2' }}</td>
            </tr>
            @if (line.description) {
              <tr class="vd-desc-row">
                <td></td>
                <td colspan="3" class="vd-desc">{{ line.description }}</td>
              </tr>
            }
          } @empty {
            <tr>
              <td colspan="4" class="vd-empty">This voucher's individual lines were not recorded.</td>
            </tr>
          }
        </tbody>
        @if (detail.lines.length > 0) {
          <tfoot>
            <tr>
              <td colspan="3">Total</td>
              <td class="num">
                ₹{{ detail.totalDebit | number: '1.2-2' }} / ₹{{ detail.totalCredit | number: '1.2-2' }}
              </td>
            </tr>
          </tfoot>
        }
      </table>

      @if (detail.relatedLines.length > 0) {
        <div class="vd-related">
          <div class="vd-related__title">
            <mat-icon inline>link</mat-icon>
            Also posted for this transaction — not part of this voucher
          </div>
          <table class="vd-table vd-table--related">
            <tbody>
              @for (line of detail.relatedLines; track $index) {
                <tr>
                  <td>
                    <span
                      class="vd-side"
                      [class.vd-side--dr]="line.entryType === 'DR'"
                      [class.vd-side--cr]="line.entryType === 'CR'"
                    >
                      {{ line.entryType === 'DR' ? 'Debit' : 'Credit' }}
                    </span>
                  </td>
                  <td>{{ line.partyName || '—' }}</td>
                  <td class="vd-acct">{{ line.accountNo || '—' }}</td>
                  <td class="num">₹{{ line.amount | number: '1.2-2' }}</td>
                </tr>
              }
            </tbody>
          </table>
          <p class="vd-related__hint">
            {{ detail.relatedLines[0].stage }} — this and the lines above are the same transaction's full accounting.
          </p>
        </div>
      }

      <div class="vd-actions">
        <button mat-flat-button color="primary" mat-dialog-close>Close</button>
      </div>
    </div>
  `,
  styles: [
    `
      .vd-shell {
        display: flex;
        flex-direction: column;
        gap: 16px;
        padding: 20px 24px 16px;
        min-width: 420px;
        max-width: 560px;
      }
      .vd-header {
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
      }
      .vd-header__title {
        display: flex;
        align-items: center;
        gap: 12px;
      }
      .vd-header__title h2 {
        margin: 0;
        font-size: 18px;
        font-weight: 600;
      }
      .vd-header__title p {
        margin: 2px 0 0;
        font-size: 13px;
        color: rgba(0, 0, 0, 0.6);
      }
      .vd-icon {
        color: #1976d2;
      }
      .vd-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 6px 16px;
        font-size: 13px;
        color: rgba(0, 0, 0, 0.65);
      }
      .vd-unbalanced {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        color: #b91c1c;
        font-weight: 600;
      }
      .vd-table {
        width: 100%;
        border-collapse: collapse;
        font-size: 13px;
      }
      .vd-table th {
        text-align: left;
        text-transform: uppercase;
        font-size: 11px;
        letter-spacing: 0.03em;
        color: rgba(0, 0, 0, 0.5);
        padding: 6px 8px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
      }
      .vd-table td {
        padding: 8px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.06);
      }
      .vd-table .num {
        text-align: right;
        font-variant-numeric: tabular-nums;
      }
      .vd-acct {
        color: rgba(0, 0, 0, 0.55);
      }
      .vd-side {
        display: inline-block;
        padding: 2px 8px;
        border-radius: 4px;
        font-size: 11px;
        font-weight: 600;
      }
      .vd-side--dr {
        background: #fee2e2;
        color: #b91c1c;
      }
      .vd-side--cr {
        background: #dcfce7;
        color: #15803d;
      }
      .vd-desc-row td {
        padding-top: 0;
        border-bottom: 1px solid rgba(0, 0, 0, 0.06);
      }
      .vd-desc {
        font-size: 12px;
        color: rgba(0, 0, 0, 0.5);
        font-style: italic;
      }
      .vd-empty {
        text-align: center;
        color: rgba(0, 0, 0, 0.5);
        padding: 16px 8px;
      }
      .vd-table tfoot td {
        font-weight: 600;
        border-bottom: none;
        border-top: 1px solid rgba(0, 0, 0, 0.1);
      }
      .vd-related {
        border-top: 1px dashed rgba(0, 0, 0, 0.15);
        padding-top: 12px;
      }
      .vd-related__title {
        display: flex;
        align-items: center;
        gap: 6px;
        font-size: 12px;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.03em;
        color: #6d28d9;
        margin-bottom: 8px;
      }
      .vd-table--related td {
        background: #faf5ff;
      }
      .vd-related__hint {
        margin: 6px 0 0;
        font-size: 12px;
        color: rgba(0, 0, 0, 0.5);
      }
      .vd-actions {
        display: flex;
        justify-content: flex-end;
      }
    `
  ]
})
export class VoucherDetailDialogComponent {
  dialogRef = inject(MatDialogRef<VoucherDetailDialogComponent>);
  private data = inject<VoucherDetailDialogData>(MAT_DIALOG_DATA);

  detail = this.data.detail;
}