import { Component, inject, signal } from '@angular/core';
import { RouterOutlet, RouterLink, RouterLinkActive } from '@angular/router';
import { CommonModule } from '@angular/common';
import { AuthService } from '../../core/services/auth.service';
import { FooterComponent } from '../footer/footer.component';

@Component({
  selector: 'app-shell',
  standalone: true,
  imports: [RouterOutlet, RouterLink, RouterLinkActive, CommonModule, FooterComponent],
  template: `
    <div class="shell">
      <!-- Sidebar -->
      <aside class="sidebar" [class.collapsed]="collapsed()">
        <div class="sidebar-header">
          <div class="brand">
            <svg viewBox="0 0 32 32" fill="none">
              <rect width="32" height="32" rx="8" fill="#0EA5E9"/>
              <path d="M16 6v20M6 16h20" stroke="white" stroke-width="3" stroke-linecap="round"/>
              <circle cx="16" cy="16" r="4" fill="white" fill-opacity="0.3"/>
            </svg>
            @if (!collapsed()) { <span class="brand-name">MediCode</span> }
          </div>
          <button class="collapse-btn" (click)="toggleCollapsed()">
            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
              <path d="M9 18l6-6-6-6"/>
            </svg>
          </button>
        </div>

        <nav class="sidebar-nav">
          <a routerLink="/dashboard" routerLinkActive="active" class="nav-item">
            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
              <rect x="3" y="3" width="7" height="7" rx="1"/><rect x="14" y="3" width="7" height="7" rx="1"/>
              <rect x="3" y="14" width="7" height="7" rx="1"/><rect x="14" y="14" width="7" height="7" rx="1"/>
            </svg>
            @if (!collapsed()) { <span>Dashboard</span> }
          </a>
          <a routerLink="/codes" routerLinkActive="active" class="nav-item">
            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
              <circle cx="11" cy="11" r="8"/><path d="m21 21-4.35-4.35"/>
            </svg>
            @if (!collapsed()) { <span>Code Search</span> }
          </a>
          <a routerLink="/patients" routerLinkActive="active" class="nav-item">
            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
              <path d="M17 21v-2a4 4 0 0 0-4-4H5a4 4 0 0 0-4 4v2"/>
              <circle cx="9" cy="7" r="4"/>
              <path d="M23 21v-2a4 4 0 0 0-3-3.87M16 3.13a4 4 0 0 1 0 7.75"/>
            </svg>
            @if (!collapsed()) { <span>Patients</span> }
          </a>

          <a routerLink="/reports" routerLinkActive="active" class="nav-item">
            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
               <path d="M3 3v18h18"/><path d="m19 9-5 5-4-4-3 3"/>
            </svg>
            @if (!collapsed()) { <span>Reports</span> }
          </a>

          

        </nav>

        <div class="sidebar-footer">
          <div class="user-info">
            <div class="avatar">{{ initials() }}</div>
            @if (!collapsed()) {
              <div class="user-meta">
                <span class="user-name">{{ auth.currentUser()?.name }}</span>
                <span class="user-role">{{ auth.currentUser()?.role }}</span>
              </div>
            }
          </div>
          <button class="logout-btn" (click)="auth.logout()" title="Logout">
            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
              <path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4M16 17l5-5-5-5M21 12H9"/>
            </svg>
          </button>
        </div>
      </aside>

      <!-- Main -->
       <!-- Main -->
      <main class="main-content">
        <div class="page-wrapper">
          <router-outlet />
        </div>
        <app-footer />
      </main>
      
    </div>
     
  `,
  styles: [`
    .shell { display:flex; min-height:100vh; background:#f1f5f9; font-family:'Inter',system-ui,sans-serif; }
 
    .sidebar {
      width:240px; background:#0f172a; display:flex; flex-direction:column;
      transition:width 0.2s ease; flex-shrink:0;
    }
    .sidebar.collapsed { width:64px; }
 
    .sidebar-header {
      display:flex; align-items:center; justify-content:space-between;
      padding:1.25rem 1rem; border-bottom:1px solid rgba(255,255,255,0.07);
    }
    .brand { display:flex; align-items:center; gap:0.625rem; overflow:hidden; }
    .brand svg { width:32px; height:32px; flex-shrink:0; }
    .brand-name { color:white; font-weight:700; font-size:1.125rem; white-space:nowrap; }
    .collapse-btn {
      background:none; border:none; cursor:pointer; color:#64748b; padding:0.25rem;
      border-radius:4px; display:flex; transition:color 0.15s;
    }
    .collapse-btn:hover { color:#94a3b8; }
    .collapse-btn svg { width:16px; height:16px; }
 
    .sidebar-nav { flex:1; padding:1rem 0.5rem; display:flex; flex-direction:column; gap:0.25rem; }
    .nav-item {
      display:flex; align-items:center; gap:0.75rem; padding:0.7rem 0.75rem;
      border-radius:8px; color:#94a3b8; text-decoration:none; font-size:0.9rem;
      font-weight:500; transition:background 0.15s, color 0.15s; white-space:nowrap; overflow:hidden;
    }
    .nav-item svg { width:20px; height:20px; flex-shrink:0; }
    .nav-item:hover { background:rgba(255,255,255,0.07); color:#e2e8f0; }
    .nav-item.active { background:rgba(14,165,233,0.15); color:#38bdf8; }
 
    .sidebar-footer {
      padding:0.75rem 0.5rem; border-top:1px solid rgba(255,255,255,0.07);
      display:flex; align-items:center; justify-content:space-between; gap:0.5rem;
    }
    .user-info { display:flex; align-items:center; gap:0.625rem; overflow:hidden; min-width:0; }
    .avatar {
      width:32px; height:32px; border-radius:50%; background:#0EA5E9; color:white;
      font-size:0.75rem; font-weight:700; display:flex; align-items:center; justify-content:center; flex-shrink:0;
    }
    .user-meta { display:flex; flex-direction:column; overflow:hidden; }
    .user-name { color:#e2e8f0; font-size:0.8rem; font-weight:600; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
    .user-role { color:#64748b; font-size:0.7rem; text-transform:capitalize; }
    .logout-btn {
      background:none; border:none; cursor:pointer; color:#64748b; padding:0.4rem;
      border-radius:6px; display:flex; flex-shrink:0; transition:color 0.15s;
    }
    .logout-btn:hover { color:#f87171; }
    .logout-btn svg { width:18px; height:18px; }
 
    /* ── Fix footer positioning ── */
    .main-content {
      flex: 1;
      overflow: auto;
      display: flex;
      flex-direction: column;   /* ← key: stack page + footer vertically */
    }
 
    .page-wrapper {
      flex: 1;                  /* ← key: page content expands, footer stays at bottom */
    }
  `],
})
export class ShellComponent {
  auth = inject(AuthService);
  collapsed = signal(false);

  toggleCollapsed() {
    this.collapsed.update(v => !v);
  }

  initials() {
    const name = this.auth.currentUser()?.name || '';
    return name.split(' ').map(n => n[0]).slice(0, 2).join('').toUpperCase();
  }
}