import { ChangeDetectionStrategy, ChangeDetectorRef, Component, OnInit } from '@angular/core';
import { CommonModule } from '@angular/common';
import { MatCardModule } from '@angular/material/card';
import { MatIconModule } from '@angular/material/icon';
import { MatButtonModule } from '@angular/material/button';
import { PokemonService } from '../../../core/services/pokemon.service';
import { Pokemon } from '../../../core/models/pokemon.model';
import { PokemonCellComponent } from '../pokemon-cell/pokemon-cell.component';
import { PokemonDetailsComponent } from '../pokemon-details/pokemon-details.component';

@Component({
  selector: 'app-pokemon-carousel',
  standalone: true,
  imports: [
    CommonModule,
    MatCardModule,
    MatIconModule,
    MatButtonModule,
    PokemonCellComponent,
    PokemonDetailsComponent
  ],
  template: `
    <div class="carousel-container">
      <button mat-icon-button class="nav-button prev" 
              [disabled]="currentBoxIndex === 0"
              (click)="previousBox()">
        <mat-icon>chevron_left</mat-icon>
      </button>

      <div class="pokemon-box-container">
        <mat-card class="pokemon-box">
          <div class="box-title">Box {{ (currentBoxIndex + 1).toString().padStart(3, '0') }}</div>
          <div class="pokemon-grid">
            <app-pokemon-cell
              *ngFor="let pokemon of currentGroup"
              [pokemon]="pokemon"
              (caught)="onPokemonCaught($event)"
              (selected)="onPokemonSelected($event)"
            ></app-pokemon-cell>
          </div>
        </mat-card>
      </div>

      <button mat-icon-button class="nav-button next" 
              [disabled]="currentBoxIndex === pokemonGroups.length - 1"
              (click)="nextBox()">
        <mat-icon>chevron_right</mat-icon>
      </button>
    </div>

    <div class="box-navigation">
      <span>Box {{ currentBoxIndex + 1 }} of {{ pokemonGroups.length }}</span>
    </div>
    
    <app-pokemon-details
      *ngIf="selectedPokemon"
      [pokemon]="selectedPokemon"
      [isOpen]="!!selectedPokemon"
      (closed)="selectedPokemon = null"
    ></app-pokemon-details>
  `,
  styles: [`
    .carousel-container {
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 20px;
      position: relative;
      height: calc(100vh - 200px);
    }

    .pokemon-box-container {
      flex: 1;
      max-width: 800px;
      position: relative;
    }

    .pokemon-box {
      background-color: white;
      border: 2px solid #ccc;
      border-radius: 10px;
      padding: 20px;
      position: relative;
      width: 100%;
      box-sizing: border-box;
    }

    .box-title {
      background-color: #4CAF50;
      color: white;
      padding: 5px 15px;
      border-radius: 15px 15px 0 0;
      position: absolute;
      top: -30px;
      left: 20px;
      font-weight: bold;
    }

    .pokemon-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 10px;
    }

    .nav-button {
      margin: 0 20px;
      &.prev { left: 0; }
      &.next { right: 0; }
      &:disabled {
        opacity: 0.5;
      }
    }

    .box-navigation {
      text-align: center;
      padding: 10px;
      font-size: 1.1em;
      color: #666;
    }
  `],
  changeDetection: ChangeDetectionStrategy.OnPush
})
export class PokemonCarouselComponent implements OnInit {
  pokemonGroups: (Pokemon | null)[][] = [];
  currentBoxIndex = 0;
  selectedPokemon: Pokemon | null = null;
  caughtPokemon = new Set<string>();

  get currentGroup(): (Pokemon | null)[] {
    return this.pokemonGroups[this.currentBoxIndex] || [];
  }

  constructor(
    private pokemonService: PokemonService,
    private cdr: ChangeDetectorRef
  ) {}

  ngOnInit() {
    this.loadPokemon();
  }

  private loadPokemon() {
    this.pokemonService.getPokemonList().subscribe({
      next: (groups) => {
        this.pokemonGroups = groups;
        this.cdr.markForCheck();
      },
      error: (error) => {
        console.error('Error loading Pokemon:', error);
        this.cdr.markForCheck();
      }
    });
  }

  nextBox() {
    if (this.currentBoxIndex < this.pokemonGroups.length - 1) {
      this.currentBoxIndex++;
      this.cdr.markForCheck();
    }
  }

  previousBox() {
    if (this.currentBoxIndex > 0) {
      this.currentBoxIndex--;
      this.cdr.markForCheck();
    }
  }

  onPokemonCaught(pfic: string) {
    this.pokemonService.toggleCatch(pfic).subscribe(
      response => {
        if (response.status === 'caught') {
          this.caughtPokemon.add(pfic);
        } else {
          this.caughtPokemon.delete(pfic);
        }
        this.cdr.markForCheck();
      }
    );
  }

  onPokemonSelected(pokemon: Pokemon) {
    this.selectedPokemon = pokemon;
    this.cdr.markForCheck();
  }
}