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import { Component, inject, OnInit } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { MatCardModule } from '@angular/material/card';
import { MatFormFieldModule } from '@angular/material/form-field';
import { MatInputModule } from '@angular/material/input';
import { MatSelectModule } from '@angular/material/select';
import { MatButtonModule } from '@angular/material/button';
import { MatIconModule } from '@angular/material/icon';
import { MatProgressSpinnerModule } from '@angular/material/progress-spinner';
import { MatSnackBar, MatSnackBarModule } from '@angular/material/snack-bar';
import { MatExpansionModule } from '@angular/material/expansion';
import { MatSliderModule } from '@angular/material/slider';
import { ApiService, Environment } from '../../services/api.service';
import { EnvironmentService } from '../../services/environment.service';

@Component({
  selector: 'app-environment',
  standalone: true,
  imports: [
    CommonModule,
    FormsModule,
    MatCardModule,
    MatFormFieldModule,
    MatInputModule,
    MatSelectModule,
    MatButtonModule,
    MatIconModule,
    MatProgressSpinnerModule,
    MatSnackBarModule,
    MatExpansionModule,
    MatSliderModule
  ],
  template: `
    <div class="environment-container">
      <mat-card>
        <mat-card-header>
          <mat-card-title>
            <mat-icon>settings</mat-icon>
            Environment Configuration
          </mat-card-title>
        </mat-card-header>
        
        <mat-card-content>
          @if (isGPTMode()) {
            <mat-card class="info-card">
              <mat-card-content>
                <mat-icon>info</mat-icon>
                <div>
                  <strong>{{ environment.work_mode === 'gpt4o' ? 'GPT-4o' : 'GPT-4o Mini' }} Mode</strong>
                  <p>This mode uses OpenAI's API which has usage-based pricing.</p>
                  <p>Approximate cost: {{ environment.work_mode === 'gpt4o' ? '$0.01-0.03' : '$0.001-0.003' }} per conversation turn.</p>
                </div>
              </mat-card-content>
            </mat-card>
          }

          <form (ngSubmit)="save()" #envForm="ngForm">
            <mat-form-field appearance="outline" class="full-width">
              <mat-label>Work Mode</mat-label>
              <mat-select
                name="workMode"
                [(ngModel)]="environment.work_mode"
                (selectionChange)="onWorkModeChange()"
                required
                [disabled]="loading"
              >
                <mat-option value="hfcloud">HF Cloud</mat-option>
                <mat-option value="cloud">Cloud</mat-option>
                <mat-option value="on-premise">On-Premise</mat-option>
                <mat-option value="gpt4o">GPT-4o</mat-option>
                <mat-option value="gpt4o-mini">GPT-4o Mini</mat-option>
              </mat-select>
              <mat-icon matPrefix>cloud</mat-icon>
            </mat-form-field>

            <mat-form-field appearance="outline" class="full-width">
              <mat-label>{{ getTokenLabel() }}</mat-label>
              <input
                matInput
                type="password"
                name="cloudToken"
                [(ngModel)]="environment.cloud_token"
                [disabled]="loading || environment.work_mode === 'on-premise'"
                [placeholder]="getTokenPlaceholder()"
              >
              <mat-icon matPrefix>vpn_key</mat-icon>
              <mat-hint>{{ isGPTMode() ? 'Required for OpenAI API access' : 'Required for HF Cloud and Cloud modes' }}</mat-hint>
            </mat-form-field>

            <mat-form-field appearance="outline" class="full-width">
              <mat-label>Spark Endpoint</mat-label>
              <input
                matInput
                type="url"
                name="sparkEndpoint"
                [(ngModel)]="environment.spark_endpoint"
                [required]="!isGPTMode()"
                [disabled]="loading || isGPTMode()"
                placeholder="https://spark-service.example.com"
              >
              <mat-icon matPrefix>link</mat-icon>
              <button
                mat-icon-button
                matSuffix
                type="button"
                (click)="testConnection()"
                [disabled]="loading || !environment.spark_endpoint || isGPTMode()"
                matTooltip="Test Connection"
              >
                <mat-icon>wifi_tethering</mat-icon>
              </button>
              @if (isGPTMode()) {
                <mat-hint>Not required for GPT mode</mat-hint>
              }
            </mat-form-field>

            <!-- TTS Configuration -->
            <div class="engine-row">
              <mat-form-field appearance="outline" class="engine-field">
                <mat-label>TTS Engine</mat-label>
                <mat-select
                  name="ttsEngine"
                  [(ngModel)]="environment.tts_engine"
                  (selectionChange)="onTTSEngineChange()"
                  [disabled]="loading"
                >
                  <mat-option value="no_tts">No TTS</mat-option>
                  <mat-option value="elevenlabs">ElevenLabs</mat-option>
                  <mat-option value="blaze">Blaze (Coming Soon)</mat-option>
                </mat-select>
                <mat-icon matPrefix>record_voice_over</mat-icon>
              </mat-form-field>

              <mat-form-field appearance="outline" class="api-key-field">
                <mat-label>TTS API Key</mat-label>
                <input
                  matInput
                  type="password"
                  name="ttsApiKey"
                  [(ngModel)]="environment.tts_engine_api_key"
                  [disabled]="loading || environment.tts_engine === 'no_tts'"
                  [required]="environment.tts_engine !== 'no_tts'"
                  placeholder="Enter TTS API key"
                >
                <mat-icon matPrefix>key</mat-icon>
              </mat-form-field>
            </div>

            <!-- STT Configuration -->
            <div class="engine-row">
              <mat-form-field appearance="outline" class="engine-field">
                <mat-label>STT Engine</mat-label>
                <mat-select
                  name="sttEngine"
                  [(ngModel)]="environment.stt_engine"
                  (selectionChange)="onSTTEngineChange()"
                  [disabled]="loading"
                >
                  <mat-option value="no_stt">No STT</mat-option>
                  <mat-option value="google">Google Cloud Speech</mat-option>
                  <mat-option value="azure">Azure Speech (Coming Soon)</mat-option>
                  <mat-option value="amazon">Amazon Transcribe (Coming Soon)</mat-option>
                  <mat-option value="flicker">Flicker (Coming Soon)</mat-option>
                </mat-select>
                <mat-icon matPrefix>mic</mat-icon>
              </mat-form-field>
              
              <mat-form-field appearance="outline" class="api-key-field">
                <mat-label>{{ getSTTKeyLabel() }}</mat-label>
                <input
                  matInput
                  type="password"
                  name="sttApiKey"
                  [(ngModel)]="environment.stt_engine_api_key"
                  [disabled]="loading || environment.stt_engine === 'no_stt'"
                  [required]="environment.stt_engine !== 'no_stt'"
                  [placeholder]="getSTTKeyPlaceholder()"
                >
                <mat-icon matPrefix>key</mat-icon>
                <mat-hint>{{ getSTTKeyHint() }}</mat-hint>
              </mat-form-field>

              <!-- STT Settings Panel -->
              <mat-expansion-panel class="stt-settings-panel" *ngIf="environment.stt_engine !== 'no_stt'">
                <mat-expansion-panel-header>
                  <mat-panel-title>
                    <mat-icon>settings_voice</mat-icon>
                    STT Settings
                  </mat-panel-title>
                  <mat-panel-description>
                    Advanced speech recognition settings
                  </mat-panel-description>
                </mat-expansion-panel-header>
                
                <div class="stt-settings-content">
                  <!-- Language -->
                  <mat-form-field appearance="outline" class="full-width">
                    <mat-label>Language</mat-label>
                    <mat-select
                      name="sttLanguage"
                      [(ngModel)]="environment.stt_settings.language"
                      [disabled]="loading"
                    >
                      <mat-option value="tr-TR">Turkish (tr-TR)</mat-option>
                      <mat-option value="en-US">English US (en-US)</mat-option>
                      <mat-option value="en-GB">English UK (en-GB)</mat-option>
                      <mat-option value="de-DE">German (de-DE)</mat-option>
                      <mat-option value="fr-FR">French (fr-FR)</mat-option>
                      <mat-option value="es-ES">Spanish (es-ES)</mat-option>
                    </mat-select>
                    <mat-icon matPrefix>language</mat-icon>
                  </mat-form-field>
              
                  <!-- Model -->
                  <mat-form-field appearance="outline" class="full-width" *ngIf="environment.stt_engine === 'google'">
                    <mat-label>Recognition Model</mat-label>
                    <mat-select
                      name="sttModel"
                      [(ngModel)]="environment.stt_settings.model"
                      [disabled]="loading"
                    >
                      <mat-option value="latest_long">Latest Long (Best for long audio)</mat-option>
                      <mat-option value="latest_short">Latest Short (Best for short audio)</mat-option>
                      <mat-option value="command_and_search">Command and Search</mat-option>
                      <mat-option value="phone_call">Phone Call</mat-option>
                      <mat-option value="video">Video</mat-option>
                    </mat-select>
                    <mat-icon matPrefix>model_training</mat-icon>
                  </mat-form-field>
              
                  <!-- Speech Timeout -->
                  <div class="slider-field">
                    <label>Speech Timeout: {{ environment.stt_settings.speech_timeout_ms }}ms</label>
                    <mat-slider
                      [min]="500"
                      [max]="5000"
                      [step]="100"
                      [discrete]="true"
                      [displayWith]="formatMilliseconds"
                    >
                      <input matSliderThumb [(ngModel)]="environment.stt_settings.speech_timeout_ms">
                    </mat-slider>
                    <mat-hint>Silence duration to end speech detection</mat-hint>
                  </div>
              
                  <!-- VAD Sensitivity -->
                  <div class="slider-field">
                    <label>Voice Activity Detection Sensitivity: {{ environment.stt_settings.vad_sensitivity }}</label>
                    <mat-slider
                      [min]="0"
                      [max]="1"
                      [step]="0.1"
                      [discrete]="true"
                    >
                      <input matSliderThumb [(ngModel)]="environment.stt_settings.vad_sensitivity">
                    </mat-slider>
                    <mat-hint>Higher values = more sensitive</mat-hint>
                  </div>
              
                  <!-- Noise Reduction Level -->
                  <div class="slider-field">
                    <label>Noise Reduction Level: {{ environment.stt_settings.noise_reduction_level }}</label>
                    <mat-slider
                      [min]="0"
                      [max]="3"
                      [step]="1"
                      [discrete]="true"
                    >
                      <input matSliderThumb [(ngModel)]="environment.stt_settings.noise_reduction_level">
                    </mat-slider>
                    <mat-hint>0 = Off, 3 = Maximum</mat-hint>
                  </div>
              
                  <!-- Checkboxes -->
                  <div class="checkbox-group">
                    <mat-checkbox 
                      [(ngModel)]="environment.stt_settings.use_enhanced"
                      [disabled]="loading"
                      *ngIf="environment.stt_engine === 'google'">
                      Use Enhanced Model
                    </mat-checkbox>
                    
                    <mat-checkbox 
                      [(ngModel)]="environment.stt_settings.enable_punctuation"
                      [disabled]="loading">
                      Enable Automatic Punctuation
                    </mat-checkbox>
                    
                    <mat-checkbox 
                      [(ngModel)]="environment.stt_settings.interim_results"
                      [disabled]="loading">
                      Show Interim Results
                    </mat-checkbox>
                  </div>
                </div>
              </mat-expansion-panel>
            </div>

            <mat-expansion-panel class="prompt-panel">
              <mat-expansion-panel-header>
                <mat-panel-title>
                  <mat-icon>psychology</mat-icon>
                  Internal System Prompt
                </mat-panel-title>
                <mat-panel-description>
                  Advanced configuration for LLM
                </mat-panel-description>
              </mat-expansion-panel-header>
              
              <mat-form-field appearance="outline" class="full-width">
                <mat-label>Internal Prompt</mat-label>
                <textarea
                  matInput
                  name="internalPrompt"
                  [(ngModel)]="environment.internal_prompt"
                  [disabled]="loading"
                  rows="10"
                  placeholder="Enter internal system prompt..."
                ></textarea>
                <mat-hint>This prompt will be prepended to all project prompts</mat-hint>
              </mat-form-field>
            </mat-expansion-panel>

            <div class="form-actions">
              <button
                mat-raised-button
                color="primary"
                type="submit"
                [disabled]="loading || !envForm.valid || saving"
              >
                @if (saving) {
                  <mat-spinner diameter="20"></mat-spinner>
                  Saving...
                } @else {
                  <mat-icon>save</mat-icon>
                  Save
                }
              </button>
              
              <button
                mat-raised-button
                type="button"
                (click)="reloadFromSpark()"
                [disabled]="loading || isGPTMode()"
              >
                <mat-icon>refresh</mat-icon>
                Reload from Spark
              </button>
            </div>
          </form>
        </mat-card-content>
      </mat-card>
    </div>
  `,
  styles: [`
    .environment-container {
      max-width: 800px;
      margin: 0 auto;
    }

    mat-card-header {
      margin-bottom: 24px;

      mat-card-title {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 24px;

        mat-icon {
          font-size: 28px;
          width: 28px;
          height: 28px;
        }
      }
    }

    .info-card {
      margin-bottom: 20px;
      background-color: #e3f2fd;
      
      mat-card-content {
        display: flex;
        gap: 16px;
        align-items: flex-start;
        
        mat-icon {
          color: #1976d2;
          margin-top: 4px;
        }
        
        p {
          margin: 4px 0;
          font-size: 14px;
        }
      }
    }

    .full-width {
      width: 100%;
      margin-bottom: 20px;
    }

    .engine-row {
      display: flex;
      gap: 16px;
      align-items: flex-start;
      margin-bottom: 20px;

      .engine-field {
        flex: 1;
      }

      .api-key-field {
        flex: 1.5;
      }
    }

    .prompt-panel {
      margin-bottom: 20px;
      
      mat-expansion-panel-header {
        mat-panel-title {
          display: flex;
          align-items: center;
          gap: 8px;
          
          mat-icon {
            color: #666;
          }
        }
      }
    }

    .form-actions {
      display: flex;
      gap: 16px;
      margin-top: 24px;
      padding-top: 24px;
      border-top: 1px solid #e0e0e0;
    
      button {
    
        mat-spinner {
          margin-right: 8px;
          vertical-align: middle; // Spinner'ı hizalamak için ekleyin
        }
        
        mat-icon {
          vertical-align: middle; // Icon'u hizalamak için ekleyin
          margin-right: 4px;      // Icon ile text arasına boşluk
        }
      }
    }
    
    .stt-settings-panel {
      margin-bottom: 20px;
      margin-top: 10px;
      
      mat-expansion-panel-header {
        mat-panel-title {
          display: flex;
          align-items: center;
          gap: 8px;
          
          mat-icon {
            color: #666;
          }
        }
      }
    }
    
    .stt-settings-content {
      padding-top: 16px;
    }
    
    .slider-field {
      margin-bottom: 24px;
      
      label {
        display: block;
        margin-bottom: 8px;
        color: rgba(0, 0, 0, 0.87);
        font-size: 14px;
      }
      
      mat-slider {
        width: 100%;
      }
      
      mat-hint {
        font-size: 12px;
        color: rgba(0, 0, 0, 0.6);
        margin-top: 4px;
      }
    }
    
    .checkbox-group {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 16px;
      
      mat-checkbox {
        margin-bottom: 0;
      }
    }

    ::ng-deep {
      .mat-mdc-form-field-icon-prefix {
        padding-right: 12px;
      }

      .mat-mdc-progress-spinner {
        --mdc-circular-progress-active-indicator-color: white;
      }
      
      .mat-expansion-panel-body {
        padding: 16px 0 !important;
      }
    }
  `]
})
export class EnvironmentComponent implements OnInit {
  private apiService = inject(ApiService);
  private snackBar = inject(MatSnackBar);
  private environmentService = inject(EnvironmentService);

  environment: Environment = {
    work_mode: 'hfcloud',
    cloud_token: '',
    spark_endpoint: '',
    internal_prompt: '',
    tts_engine: 'no_tts',
    tts_engine_api_key: '',
    stt_engine: 'no_stt',
    stt_engine_api_key: ''
  };

  loading = true;
  saving = false;

  ngOnInit() {
    this.loadEnvironment();
  }

  loadEnvironment() {
    this.loading = true;
    this.apiService.getEnvironment().subscribe({
      next: (env) => {
        this.environment = env;
        this.loading = false;
      },
      error: (err) => {
        this.snackBar.open('Failed to load environment configuration', 'Close', {
          duration: 5000,
          panelClass: 'error-snackbar'
        });
        this.loading = false;
      }
    });
  }

  getTokenLabel(): string {
    switch(this.environment.work_mode) {
      case 'gpt4o':
      case 'gpt4o-mini':
        return 'OpenAI API Key';
      case 'hfcloud':
      case 'cloud':
        return 'Cloud Token';
      default:
        return 'Cloud Token';
    }
  }

  getTokenPlaceholder(): string {
    switch(this.environment.work_mode) {
      case 'gpt4o':
      case 'gpt4o-mini':
        return 'Enter OpenAI API key (sk-...)';
      case 'hfcloud':
      case 'cloud':
        return 'Enter cloud token';
      default:
        return 'Enter cloud token';
    }
  }

  isGPTMode(): boolean {
    return this.environment.work_mode === 'gpt4o' || this.environment.work_mode === 'gpt4o-mini';
  }

  onWorkModeChange() {
    if (this.environment.work_mode === 'on-premise') {
      this.environment.cloud_token = '';
    }
  }

  onTTSEngineChange() {
    if (this.environment.tts_engine === 'no_tts') {
      this.environment.tts_engine_api_key = '';
    }
  }

  onSTTEngineChange() {
    if (this.environment.stt_engine === 'no_stt') {
      this.environment.stt_engine_api_key = '';
    }
  }

  getSTTKeyLabel(): string {
    switch(this.environment.stt_engine) {
      case 'google':
        return 'Google Credentials Path';
      case 'azure':
        return 'Azure Subscription Key';
      case 'amazon':
        return 'AWS Access Key';
      case 'flicker':
        return 'Flicker API Key';
      default:
        return 'STT API Key';
    }
  }
  
  getSTTKeyPlaceholder(): string {
    switch(this.environment.stt_engine) {
      case 'google':
        return 'Path to Google credentials JSON file';
      case 'azure':
        return 'Enter Azure subscription key';
      case 'amazon':
        return 'Enter AWS access key';
      case 'flicker':
        return 'Enter Flicker API key';
      default:
        return 'Enter STT API key';
    }
  }
  
  getSTTKeyHint(): string {
    switch(this.environment.stt_engine) {
      case 'google':
        return 'Path to service account JSON file for Google Cloud';
      case 'azure':
        return 'Subscription key from Azure portal';
      case 'amazon':
        return 'AWS IAM access key with Transcribe permissions';
      case 'flicker':
        return 'API key from Flicker dashboard';
      default:
        return '';
    }
  }  

  save() {
    this.saving = true;
  
    this.apiService.updateEnvironment(this.environment).subscribe({
      next: () => {
        // Environment service'i güncelle
        this.environmentService.updateEnvironment(this.environment);
        
        this.snackBar.open('Environment configuration saved successfully', 'Close', {
          duration: 3000
        });
        this.saving = false;
      },
      error: (err) => {
        this.snackBar.open(
          err.error?.detail || 'Failed to save configuration', 
          'Close', 
          { duration: 5000, panelClass: 'error-snackbar' }
        );
        this.saving = false;
      }
    });
  }

  testConnection() {
    this.snackBar.open('Testing connection to Spark endpoint...', undefined, {
      duration: 2000
    });
    
    // TODO: Implement actual connection test
    setTimeout(() => {
      this.snackBar.open('Connection successful!', 'Close', {
        duration: 3000
      });
    }, 2000);
  }

  reloadFromSpark() {
    if (this.isGPTMode()) {
      return;
    }

    this.snackBar.open('Reloading configuration from Spark...', undefined, {
      duration: 2000
    });
    
    setTimeout(() => {
      this.loadEnvironment();
      this.snackBar.open('Configuration reloaded', 'Close', {
        duration: 3000
      });
    }, 1000);
  }
}