import { Component, inject, signal } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { Router } from '@angular/router';
import { ApiService } from '../../core/services/api.service';

interface EnvVar {
  key: string;
  value: string;
}

@Component({
  selector: 'app-service-create',
  standalone: true,
  imports: [CommonModule, FormsModule],
  template: `
    <div class="px-4 sm:px-0">
      <h1 class="text-3xl font-bold text-gray-900 mb-8">Deploy New Service</h1>

      <div class="card max-w-3xl">
        <form (ngSubmit)="onSubmit()">
          <!-- Name -->
          <div class="mb-6">
            <label for="name" class="label">Service Name *</label>
            <input
              type="text"
              id="name"
              [(ngModel)]="name"
              name="name"
              required
              placeholder="myapp"
              class="input"
            />
            <p class="mt-1 text-sm text-gray-500">Lowercase letters, numbers, and hyphens only</p>
          </div>

          <!-- Image -->
          <div class="mb-6">
            <label for="image" class="label">Docker Image *</label>
            <input
              type="text"
              id="image"
              [(ngModel)]="image"
              name="image"
              required
              placeholder="nginx:latest"
              class="input"
            />
            <p class="mt-1 text-sm text-gray-500">Format: image:tag or registry/image:tag</p>
          </div>

          <!-- Port -->
          <div class="mb-6">
            <label for="port" class="label">Container Port *</label>
            <input
              type="number"
              id="port"
              [(ngModel)]="port"
              name="port"
              required
              placeholder="80"
              class="input"
            />
            <p class="mt-1 text-sm text-gray-500">Port that your application listens on</p>
          </div>

          <!-- Domain -->
          <div class="mb-6">
            <label for="domain" class="label">Domain (Optional)</label>
            <input
              type="text"
              id="domain"
              [(ngModel)]="domain"
              name="domain"
              placeholder="app.example.com"
              class="input"
            />
            <p class="mt-1 text-sm text-gray-500">Leave empty to skip automatic DNS & SSL</p>
          </div>

          <!-- Environment Variables -->
          <div class="mb-6">
            <label class="label">Environment Variables</label>
            @for (env of envVars(); track $index) {
              <div class="flex gap-2 mb-2">
                <input
                  type="text"
                  [(ngModel)]="env.key"
                  [name]="'envKey' + $index"
                  placeholder="KEY"
                  class="input flex-1"
                />
                <input
                  type="text"
                  [(ngModel)]="env.value"
                  [name]="'envValue' + $index"
                  placeholder="value"
                  class="input flex-1"
                />
                <button type="button" (click)="removeEnvVar($index)" class="btn btn-danger">
                  Remove
                </button>
              </div>
            }
            <button type="button" (click)="addEnvVar()" class="btn btn-secondary mt-2">
              Add Environment Variable
            </button>
          </div>

          <!-- Options -->
          <div class="mb-6">
            <div class="flex items-center mb-2">
              <input
                type="checkbox"
                id="autoDNS"
                [(ngModel)]="autoDNS"
                name="autoDNS"
                class="h-4 w-4 text-primary-600 focus:ring-primary-500 border-gray-300 rounded"
              />
              <label for="autoDNS" class="ml-2 block text-sm text-gray-900">
                Configure DNS automatically
              </label>
            </div>
            <div class="flex items-center">
              <input
                type="checkbox"
                id="autoSSL"
                [(ngModel)]="autoSSL"
                name="autoSSL"
                class="h-4 w-4 text-primary-600 focus:ring-primary-500 border-gray-300 rounded"
              />
              <label for="autoSSL" class="ml-2 block text-sm text-gray-900">
                Obtain SSL certificate automatically
              </label>
            </div>
          </div>

          @if (error()) {
            <div class="rounded-md bg-red-50 p-4 mb-6">
              <p class="text-sm text-red-800">{{ error() }}</p>
            </div>
          }

          <!-- Actions -->
          <div class="flex justify-end space-x-4">
            <button type="button" (click)="cancel()" class="btn btn-secondary">
              Cancel
            </button>
            <button type="submit" [disabled]="loading()" class="btn btn-primary">
              {{ loading() ? 'Deploying...' : 'Deploy Service' }}
            </button>
          </div>
        </form>
      </div>
    </div>
  `,
})
export class ServiceCreateComponent {
  private apiService = inject(ApiService);
  private router = inject(Router);

  name = '';
  image = '';
  port = 80;
  domain = '';
  autoDNS = true;
  autoSSL = true;
  envVars = signal<EnvVar[]>([]);
  loading = signal(false);
  error = signal('');

  addEnvVar(): void {
    this.envVars.update((vars) => [...vars, { key: '', value: '' }]);
  }

  removeEnvVar(index: number): void {
    this.envVars.update((vars) => vars.filter((_, i) => i !== index));
  }

  onSubmit(): void {
    this.error.set('');
    this.loading.set(true);

    // Convert env vars to object
    const envVarsObj: Record<string, string> = {};
    for (const env of this.envVars()) {
      if (env.key && env.value) {
        envVarsObj[env.key] = env.value;
      }
    }

    const data = {
      name: this.name,
      image: this.image,
      port: this.port,
      domain: this.domain || undefined,
      envVars: envVarsObj,
      autoDNS: this.autoDNS,
      autoSSL: this.autoSSL,
    };

    this.apiService.createService(data).subscribe({
      next: (response) => {
        this.loading.set(false);
        if (response.success) {
          this.router.navigate(['/services']);
        } else {
          this.error.set(response.error || 'Failed to deploy service');
        }
      },
      error: (err) => {
        this.loading.set(false);
        this.error.set(err.error?.error || 'An error occurred');
      },
    });
  }

  cancel(): void {
    this.router.navigate(['/services']);
  }
}