import { ChangeDetectorRef, Component, OnInit, inject } from '@angular/core';
import { CommonModule } from '@angular/common';
import { LootboxService } from '../services/lootbox.service';
import { LootBox } from 'app/model/LootBox';
import { Router } from '@angular/router';
import { timeout } from 'rxjs';
import { User } from 'app/model/User';
import { AuthService } from '@service/auth.service';
import { UserService } from '@service/user.service';

@Component({
  selector: 'app-lootbox-selection',
  standalone: true,
  imports: [CommonModule],
  templateUrl: './lootbox-selection.component.html',
  styleUrls: ['./lootbox-selection.component.css'],
})
export default class LootboxSelectionComponent implements OnInit {
  lootboxes: LootBox[] = [];
  isLoading = true;
  error = '';
  currentUser: User | null = null;

  // Fallback data in case the API call fails
  fallbackLootboxes: LootBox[] = [
    {
      id: 1,
      name: 'Basic LootBox',
      price: 2.0,
      rewards: [
        {
          id: 1,
          value: 0.5,
          probability: 0.7,
        },
        {
          id: 5,
          value: 5.0,
          probability: 0.3,
        },
      ],
    },
    {
      id: 2,
      name: 'Premium LootBox',
      price: 5.0,
      rewards: [
        {
          id: 4,
          value: 2.0,
          probability: 0.6,
        },
        {
          id: 5,
          value: 5.0,
          probability: 0.3,
        },
        {
          id: 6,
          value: 15.0,
          probability: 0.1,
        },
      ],
    },
    {
      id: 3,
      name: 'Legendäre LootBox',
      price: 15.0,
      rewards: [
        {
          id: 4,
          value: 2.0,
          probability: 0.6,
        },
        {
          id: 5,
          value: 5.0,
          probability: 0.3,
        },
        {
          id: 6,
          value: 15.0,
          probability: 0.1,
        },
      ],
    },
  ];

  private lootboxService = inject(LootboxService);
  private router = inject(Router);
  private cdr = inject(ChangeDetectorRef);
  private authService = inject(AuthService);
  private userService = inject(UserService);

  ngOnInit(): void {
    this.loadLootboxes();
    this.authService.userSubject.subscribe((user) => {
      this.currentUser = user;
      this.cdr.detectChanges();
    });
  }

  loadLootboxes(): void {
    this.isLoading = true;
    this.lootboxService
      .getAllLootBoxes()
      .pipe(timeout(5000))
      .subscribe({
        next: (data) => {
          console.log('Received lootboxes:', data);
          this.lootboxes = data;
          this.isLoading = false;
          this.cdr.detectChanges();
        },
        error: (err) => {
          this.error = 'Konnte keine Verbindung zum Backend herstellen. Zeige Demo-Daten.';
          this.lootboxes = this.fallbackLootboxes;
          this.isLoading = false;
          this.cdr.detectChanges();
          console.error('Failed to load lootboxes:', err);
        },
      });
  }

  getBoxImage(id: number): string {
    return `/images/${id}-box.png`;
  }

  openLootbox(lootboxId: number): void {
    const lootbox = this.lootboxes.find((box) => box.id === lootboxId);

    if (!lootbox) {
      return;
    }

    if (!this.currentUser || this.currentUser.balance < lootbox.price) {
      this.error = 'Nicht genug Guthaben, um diese Lootbox zu öffnen.';
      // Scroll to top to see the error message
      window.scrollTo(0, 0);
      this.cdr.detectChanges();
      setTimeout(() => {
        this.error = '';
        this.cdr.detectChanges();
      }, 5000);
      return;
    }

    this.router.navigate(['/game/lootboxes/open', lootboxId]);
  }

  getRarityClass(probability: number): string {
    if (probability <= 0.1) {
      return 'text-yellow-400'; // Legendary
    } else if (probability <= 0.3) {
      return 'text-purple-400'; // Rare
    } else {
      return 'text-blue-400'; // Common
    }
  }

  formatProbability(probability: number): string {
    return (probability * 100).toFixed(0) + '%';
  }

  hasEnoughBalance(price: number): boolean {
    return !!this.currentUser && this.currentUser.balance >= price;
  }
}