import { Component, Inject, OnInit } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormBuilder, FormGroup, Validators, ReactiveFormsModule, FormArray, FormsModule } from '@angular/forms';  
import { MatDialogRef, MAT_DIALOG_DATA, MatDialogModule, MatDialog } from '@angular/material/dialog';
import { MatTabsModule } from '@angular/material/tabs';
import { MatFormFieldModule } from '@angular/material/form-field';
import { MatInputModule } from '@angular/material/input';
import { MatSelectModule } from '@angular/material/select';
import { MatCheckboxModule } from '@angular/material/checkbox';
import { MatButtonModule } from '@angular/material/button';
import { MatIconModule } from '@angular/material/icon';
import { MatSnackBar, MatSnackBarModule } from '@angular/material/snack-bar';
import { MatTableModule } from '@angular/material/table';
import { MatChipsModule } from '@angular/material/chips';
import { MatExpansionModule } from '@angular/material/expansion';
import { MatDividerModule } from '@angular/material/divider';
import { MatProgressBarModule } from '@angular/material/progress-bar';
import { MatListModule } from '@angular/material/list';
import { MatProgressSpinnerModule } from '@angular/material/progress-spinner';
import { MatBadgeModule } from '@angular/material/badge';
import { ApiService, Project, Version } from '../../services/api.service';
import { LocaleManagerService } from '../../services/locale-manager.service';
import ConfirmDialogComponent from '../confirm-dialog/confirm-dialog.component';

// Interfaces for multi-language support
interface LocalizedExample {
  locale_code: string;
  example: string;
}

interface LocalizedCaption {
  locale_code: string;
  caption: string;
}

interface Locale {
  code: string;
  name: string;
}

@Component({
  selector: 'app-version-edit-dialog',
  standalone: true,
  imports: [
    CommonModule,
    ReactiveFormsModule,
    FormsModule,
    MatDialogModule,
    MatTabsModule,
    MatFormFieldModule,
    MatInputModule,
    MatSelectModule,
    MatCheckboxModule,
    MatButtonModule,
    MatIconModule,
    MatSnackBarModule,
    MatTableModule,
    MatChipsModule,
    MatExpansionModule,
    MatDividerModule,
    MatProgressBarModule,
    MatListModule,
    MatProgressSpinnerModule,
    MatBadgeModule
  ],
  templateUrl: './version-edit-dialog.component.html',
  styleUrls: ['./version-edit-dialog.component.scss']
})
export default class VersionEditDialogComponent implements OnInit {
  project: Project;
  versions: Version[] = [];
  selectedVersion: Version | null = null;
  versionForm!: FormGroup;
  
  loading = false;
  saving = false;
  publishing = false;
  creating = false;
  isDirty = false;
  testing = false;
  
  selectedTabIndex = 0;
  testUserMessage = '';
  testResult: any = null;
  
  // Multi-language support
  selectedExampleLocale: string = 'tr';
  availableLocales: Locale[] = [];

  constructor(
    private fb: FormBuilder,
    private apiService: ApiService,
    private localeService: LocaleManagerService,
    private snackBar: MatSnackBar,
    private dialog: MatDialog,
    public dialogRef: MatDialogRef<VersionEditDialogComponent>,
    @Inject(MAT_DIALOG_DATA) public data: any
  ) {
    this.project = data.project;
    this.versions = [...this.project.versions].sort((a, b) => b.no - a.no);
    this.selectedExampleLocale = this.project.default_locale || 'tr';
  }

  ngOnInit() {
    this.initializeForm();
    this.loadAvailableLocales();
    
    // Select the latest unpublished version or the latest version
    const unpublished = this.versions.find(v => !v.published);
    this.selectedVersion = unpublished || this.versions[0] || null;
    
    if (this.selectedVersion) {
      this.loadVersion(this.selectedVersion);
    }

    this.versionForm.valueChanges.subscribe(() => {
      this.isDirty = true;
    });
  }

  initializeForm() {
    this.versionForm = this.fb.group({
      no: [{value: '', disabled: true}],
      caption: ['', Validators.required],
      published: [{value: false, disabled: true}],
      general_prompt: ['', Validators.required],
      welcome_prompt: [''],  // Added welcome_prompt field
      llm: this.fb.group({
        repo_id: ['', Validators.required],
        generation_config: this.fb.group({
          max_new_tokens: [256, [Validators.required, Validators.min(1), Validators.max(2048)]],
          temperature: [0.2, [Validators.required, Validators.min(0), Validators.max(2)]],
          top_p: [0.8, [Validators.required, Validators.min(0), Validators.max(1)]],
          repetition_penalty: [1.1, [Validators.required, Validators.min(1), Validators.max(2)]]
        }),
        use_fine_tune: [false],
        fine_tune_zip: ['']
      }),
      intents: this.fb.array([]),
      last_update_date: ['']
    });

    // Watch for fine-tune toggle
    this.versionForm.get('llm.use_fine_tune')?.valueChanges.subscribe(useFineTune => {
      const fineTuneControl = this.versionForm.get('llm.fine_tune_zip');
      if (useFineTune) {
        fineTuneControl?.setValidators([Validators.required]);
      } else {
        fineTuneControl?.clearValidators();
        fineTuneControl?.setValue('');
      }
      fineTuneControl?.updateValueAndValidity();
    });
  }

  async loadAvailableLocales() {
    // Get supported locales from project
    const supportedCodes = [
      this.project.default_locale,
      ...(this.project.supported_locales || [])
    ].filter(Boolean);

    // Get locale details
    for (const code of supportedCodes) {
      if (!code) continue; // Skip undefined/null values
      
      try {
        const localeInfo = await this.localeService.getLocaleDetails(code).toPromise();
        if (localeInfo) {
          this.availableLocales.push({
            code: localeInfo.code,
            name: localeInfo.name
          });
        }
      } catch (error) {
        // Use fallback for known locales
        const fallbackNames: { [key: string]: string } = {
          'tr': 'Türkçe',
          'en': 'English',
          'de': 'Deutsch',
          'fr': 'Français',
          'es': 'Español'
        };
        if (code && fallbackNames[code]) {
          this.availableLocales.push({
            code: code,
            name: fallbackNames[code]
          });
        }
      }
    }
  }

  getAvailableLocales(): Locale[] {
    return this.availableLocales;
  }

  getLocaleName(localeCode: string): string {
    const locale = this.availableLocales.find(l => l.code === localeCode);
    return locale?.name || localeCode;
  }

  loadVersion(version: Version) {
    this.selectedVersion = version;
    
    // Debug published status
    console.log('Loading version:', version.no, 'Published:', version.published);
    
    // Form değerlerini set et
    this.versionForm.patchValue({
      no: version.no,
      caption: version.caption || '',
      published: version.published || false,
      general_prompt: (version as any).general_prompt || '',
      welcome_prompt: (version as any).welcome_prompt || '',  // Added welcome_prompt
      last_update_date: version.last_update_date || ''
    });
  
    // LLM config'i ayrı set et
    if ((version as any).llm) {
      this.versionForm.patchValue({
        llm: {
          repo_id: (version as any).llm.repo_id || '',
          generation_config: (version as any).llm.generation_config || {
            max_new_tokens: 512,
            temperature: 0.7,
            top_p: 0.95,
            repetition_penalty: 1.1
          },
          use_fine_tune: (version as any).llm.use_fine_tune || false,
          fine_tune_zip: (version as any).llm.fine_tune_zip || ''
        }
      });
    }
  
    // Clear and rebuild intents
    this.intents.clear();
    ((version as any).intents || []).forEach((intent: any) => {
      this.intents.push(this.createIntentFormGroup(intent));
    });

    this.isDirty = false;
  }
  
  async loadVersions() {
    this.loading = true;
    try {
      const project = await this.apiService.getProject(this.project.id).toPromise();
      if (project) {
        this.project = project;
        this.versions = [...project.versions].sort((a, b) => b.no - a.no);
        
        // Re-select current version if it still exists
        if (this.selectedVersion) {
          const currentVersion = this.versions.find(v => v.no === this.selectedVersion!.no);
          if (currentVersion) {
            this.loadVersion(currentVersion);
          } else if (this.versions.length > 0) {
            this.loadVersion(this.versions[0]);
          }
        } else if (this.versions.length > 0) {
          this.loadVersion(this.versions[0]);
        }
      }
    } catch (error) {
      this.snackBar.open('Failed to reload versions', 'Close', { duration: 3000 });
    } finally {
      this.loading = false;
    }
  }

  createIntentFormGroup(intent: any = {}): FormGroup {
    const group = this.fb.group({
      name: [intent.name || '', [Validators.required, Validators.pattern(/^[a-zA-Z0-9-]+$/)]],
      caption: [intent.caption || ''],
      detection_prompt: [intent.detection_prompt || '', Validators.required],
      examples: [intent.examples || []], // Store as array, not FormArray
      parameters: this.fb.array([]),
      action: [intent.action || '', Validators.required],
      fallback_timeout_prompt: [intent.fallback_timeout_prompt || ''],
      fallback_error_prompt: [intent.fallback_error_prompt || '']
    });
  
    // Parameters'ı ayrı olarak ekle
    if (intent.parameters && Array.isArray(intent.parameters)) {
      const parametersArray = group.get('parameters') as FormArray;
      intent.parameters.forEach((param: any) => {
        parametersArray.push(this.createParameterFormGroup(param));
      });
    }
  
    return group;
  }

  createParameterFormGroup(param: any = {}): FormGroup {
    return this.fb.group({
      name: [param.name || '', [Validators.required, Validators.pattern(/^[a-zA-Z0-9_]+$/)]],
      caption: [param.caption || []],
      type: [param.type || 'str', Validators.required],
      required: [param.required !== false],
      variable_name: [param.variable_name || '', Validators.required],
      extraction_prompt: [param.extraction_prompt || ''],
      validation_regex: [param.validation_regex || ''],
      invalid_prompt: [param.invalid_prompt || ''],
      type_error_prompt: [param.type_error_prompt || '']
    });
  }

  get intents() {
    return this.versionForm.get('intents') as FormArray;
  }

  getIntentParameters(intentIndex: number): FormArray {
    return this.intents.at(intentIndex).get('parameters') as FormArray;
  }

  // LocalizedExample support methods
  getLocalizedExamples(examples: any[], locale: string): LocalizedExample[] {
    if (!examples || !Array.isArray(examples)) return [];
    
    // Check if examples are in new format
    if (examples.length > 0 && typeof examples[0] === 'object' && 'locale_code' in examples[0]) {
      return examples.filter(ex => ex.locale_code === locale);
    }
    
    // Old format - convert to new
    if (typeof examples[0] === 'string') {
      return examples.map(ex => ({ locale_code: locale, example: ex }));
    }
    
    return [];
  }

  getParameterCaptionDisplay(captions: LocalizedCaption[]): string {
    if (!captions || !Array.isArray(captions) || captions.length === 0) {
      return '(No caption)';
    }
    
    // Try to find caption for selected locale
    const selectedCaption = captions.find(c => c.locale_code === this.selectedExampleLocale);
    if (selectedCaption) return selectedCaption.caption;
    
    // Try default locale
    const defaultCaption = captions.find(c => c.locale_code === this.project.default_locale);
    if (defaultCaption) return defaultCaption.caption;
    
    // Return first available caption
    return captions[0].caption;
  }

  addLocalizedExample(intentIndex: number, example: string) {
    if (!example.trim()) return;
    
    const intent = this.intents.at(intentIndex);
    const currentExamples = intent.get('examples')?.value || [];
    
    // Check if already exists
    const exists = currentExamples.some((ex: any) => 
      ex.locale_code === this.selectedExampleLocale && ex.example === example.trim()
    );
    
    if (!exists) {
      const newExamples = [...currentExamples, {
        locale_code: this.selectedExampleLocale,
        example: example.trim()
      }];
      intent.patchValue({ examples: newExamples });
      this.isDirty = true;
    }
  }

  removeLocalizedExample(intentIndex: number, exampleToRemove: LocalizedExample) {
    const intent = this.intents.at(intentIndex);
    const currentExamples = intent.get('examples')?.value || [];
    
    const newExamples = currentExamples.filter((ex: any) => 
      !(ex.locale_code === exampleToRemove.locale_code && ex.example === exampleToRemove.example)
    );
    
    intent.patchValue({ examples: newExamples });
    this.isDirty = true;
  }

  addParameter(intentIndex: number) {
    const parameters = this.getIntentParameters(intentIndex);
    parameters.push(this.createParameterFormGroup());
    this.isDirty = true;
  }

  removeParameter(intentIndex: number, paramIndex: number) {
    const parameters = this.getIntentParameters(intentIndex);
    parameters.removeAt(paramIndex);
    this.isDirty = true;
  }

  // Check if version can be edited
  get canEdit(): boolean {
    const canEditResult = !this.selectedVersion?.published;
    console.log('Can edit check:', 'Version:', this.selectedVersion?.no, 'Published:', this.selectedVersion?.published, 'Result:', canEditResult);
    return canEditResult;
  }

  addIntent() {
    this.intents.push(this.createIntentFormGroup());
    this.isDirty = true;
  }

  removeIntent(index: number) {
    const intent = this.intents.at(index).value;
    const dialogRef = this.dialog.open(ConfirmDialogComponent, {
      width: '400px',
      data: {
        title: 'Delete Intent',
        message: `Are you sure you want to delete intent "${intent.name}"?`,
        confirmText: 'Delete',
        confirmColor: 'warn'
      }
    });

    dialogRef.afterClosed().subscribe(confirmed => {
      if (confirmed) {
        this.intents.removeAt(index);
        this.isDirty = true;
      }
    });
  }

  async editIntent(intentIndex: number) {
    const { default: IntentEditDialogComponent } = await import('../intent-edit-dialog/intent-edit-dialog.component');
    
    const intent = this.intents.at(intentIndex);
    const currentValue = intent.value;
    
    // Intent verilerini dialog'a gönder
    const dialogRef = this.dialog.open(IntentEditDialogComponent, {
      width: '90vw',
      maxWidth: '1000px',
      data: { 
        intent: {
          ...currentValue,
          examples: currentValue.examples || [],
          parameters: currentValue.parameters || []
        },
        project: this.project,
        apis: await this.getAvailableAPIs()
      }
    });
  
    dialogRef.afterClosed().subscribe(result => {
      if (result) {
        // Update intent with result
        intent.patchValue({
          name: result.name,
          caption: result.caption,
          detection_prompt: result.detection_prompt,
          examples: result.examples || [],
          action: result.action,
          fallback_timeout_prompt: result.fallback_timeout_prompt,
          fallback_error_prompt: result.fallback_error_prompt
        });
  
        // Update parameters
        const parametersArray = intent.get('parameters') as FormArray;
        parametersArray.clear();
        (result.parameters || []).forEach((param: any) => {
          parametersArray.push(this.createParameterFormGroup(param));
        });
        
        this.isDirty = true;
      }
    });
  }

  async getAvailableAPIs(): Promise<any[]> {
    try {
      return await this.apiService.getAPIs().toPromise() || [];
    } catch {
      return [];
    }
  }

  async createVersion() {
    const publishedVersions = this.versions.filter(v => v.published);
    
    const dialogRef = this.dialog.open(ConfirmDialogComponent, {
      width: '500px',
      data: {
        title: 'Create New Version',
        message: 'Which published version would you like to use as a base for the new version?',
        showDropdown: true,
        dropdownOptions: publishedVersions.map(v => ({
          value: v.no,
          label: `Version ${v.no} - ${v.caption || 'No description'}`
        })),
        dropdownPlaceholder: 'Select published version (or leave empty for blank)',
        confirmText: 'Create',
        cancelText: 'Cancel'
      }
    });
  
    dialogRef.afterClosed().subscribe(async (result) => {
      if (result?.confirmed) {
        this.creating = true;
        try {
          let newVersionData;
          
          if (result.selectedValue) {
            // Copy from selected version - we need to get the full version data
            const sourceVersion = this.versions.find(v => v.no === result.selectedValue);
            if (sourceVersion) {
              // Load the full version data from the current form if it's the selected version
              if (sourceVersion.no === this.selectedVersion?.no) {
                const formValue = this.versionForm.getRawValue();
                newVersionData = {
                  ...formValue,
                  no: undefined,
                  published: false,
                  last_update_date: undefined,
                  caption: `Copy of ${sourceVersion.caption || `version ${sourceVersion.no}`}`
                };
              } else {
                // For other versions, we only have basic info, so create minimal copy
                newVersionData = {
                  caption: `Copy of ${sourceVersion.caption || `version ${sourceVersion.no}`}`,
                  general_prompt: '',
                  llm: {
                    repo_id: '',
                    generation_config: {
                      max_new_tokens: 512,
                      temperature: 0.7,
                      top_p: 0.95,
                      repetition_penalty: 1.1
                    },
                    use_fine_tune: false,
                    fine_tune_zip: ''
                  },
                  intents: []
                };
              }
            }
          } else {
            // Create blank version
            newVersionData = {
              caption: `Version ${this.versions.length + 1}`,
              general_prompt: '',
              llm: {
                repo_id: '',
                generation_config: {
                  max_new_tokens: 512,
                  temperature: 0.7,
                  top_p: 0.95,
                  repetition_penalty: 1.1
                },
                use_fine_tune: false,
                fine_tune_zip: ''
              },
              intents: []
            };
          }
  
          if (newVersionData) {
            await this.apiService.createVersion(this.project.id, newVersionData).toPromise();
            await this.loadVersions();
            this.snackBar.open('Version created successfully!', 'Close', { duration: 3000 });
          }
        } catch (error) {
          this.snackBar.open('Failed to create version', 'Close', { duration: 3000 });
        } finally {
          this.creating = false;
        }
      }
    });
  }

  async saveVersion() {
    console.log('Save button clicked - canEdit:', this.canEdit, 'published:', this.selectedVersion?.published);
    
    if (!this.selectedVersion || !this.canEdit) {
      this.snackBar.open('Cannot save published version', 'Close', { duration: 3000 });
      return;
    }
    
    if (this.versionForm.invalid) {
      const invalidFields: string[] = [];
      Object.keys(this.versionForm.controls).forEach(key => {
        const control = this.versionForm.get(key);
        if (control && control.invalid) {
          invalidFields.push(key);
        }
      });
      
      this.intents.controls.forEach((intent, index) => {
        if (intent.invalid) {
          invalidFields.push(`Intent ${index + 1}`);
        }
      });
  
      this.snackBar.open(`Please fix validation errors in: ${invalidFields.join(', ')}`, 'Close', { 
        duration: 5000 
      });
      return;
    }
  
    const currentVersion = this.selectedVersion!;
  
    this.saving = true;
    
    try {
      const formValue = this.versionForm.getRawValue();
      
      // updateData'yı backend'in beklediği formatta hazırla
      const updateData = {
        caption: formValue.caption,
        general_prompt: formValue.general_prompt || '',
        welcome_prompt: formValue.welcome_prompt || '',  // Added welcome_prompt
        llm: formValue.llm,
        intents: formValue.intents.map((intent: any) => ({
          name: intent.name,
          caption: intent.caption,
          detection_prompt: intent.detection_prompt,
          examples: Array.isArray(intent.examples) ? intent.examples : [],
          parameters: Array.isArray(intent.parameters) ? intent.parameters.map((param: any) => ({
            name: param.name,
            caption: param.caption,
            type: param.type,
            required: param.required,
            variable_name: param.variable_name,
            extraction_prompt: param.extraction_prompt,
            validation_regex: param.validation_regex,
            invalid_prompt: param.invalid_prompt,
            type_error_prompt: param.type_error_prompt
          })) : [],
          action: intent.action,
          fallback_timeout_prompt: intent.fallback_timeout_prompt,
          fallback_error_prompt: intent.fallback_error_prompt
        })),
        last_update_date: currentVersion.last_update_date || ''
      };
  
      console.log('Saving version data:', JSON.stringify(updateData, null, 2));
  
      const result = await this.apiService.updateVersion(
        this.project.id, 
        currentVersion.no, 
        updateData
      ).toPromise();
  
      this.snackBar.open('Version saved successfully', 'Close', { duration: 3000 });

      this.isDirty = false;
      
      if (result) {
        this.selectedVersion = result;
        this.versionForm.patchValue({
          last_update_date: result.last_update_date
        });
      }
      
      await this.loadVersions();
      
    } catch (error: any) {
      console.error('Save error:', error);
      
      if (error.status === 409) {
        // Race condition handling
        await this.handleRaceCondition(currentVersion);
      } else if (error.status === 400 && error.error?.detail?.includes('Published versions')) {
        this.snackBar.open('Published versions cannot be modified. Create a new version instead.', 'Close', { 
          duration: 5000,
          panelClass: 'error-snackbar'
        });
      } else {
        const errorMessage = error.error?.detail || error.message || 'Failed to save version';
        this.snackBar.open(errorMessage, 'Close', { 
          duration: 5000,
          panelClass: 'error-snackbar'
        });
      }
    } finally {
      this.saving = false;
    }
  }
  
  // Race condition handling
  private async handleRaceCondition(currentVersion: Version) {
    const formValue = this.versionForm.getRawValue();
    
    const retryUpdateData = {
      caption: formValue.caption,
      general_prompt: formValue.general_prompt || '',
      welcome_prompt: formValue.welcome_prompt || '',
      llm: formValue.llm,
      intents: formValue.intents.map((intent: any) => ({
        name: intent.name,
        caption: intent.caption,
        detection_prompt: intent.detection_prompt,
        examples: Array.isArray(intent.examples) ? intent.examples : [],
        parameters: Array.isArray(intent.parameters) ? intent.parameters : [],
        action: intent.action,
        fallback_timeout_prompt: intent.fallback_timeout_prompt,
        fallback_error_prompt: intent.fallback_error_prompt
      })),
      last_update_date: currentVersion.last_update_date || ''
    };
  
    const dialogRef = this.dialog.open(ConfirmDialogComponent, {
      width: '500px',
      data: {
        title: 'Version Modified',
        message: 'This version was modified by another user. Do you want to reload and lose your changes, or force save?',
        confirmText: 'Force Save',
        cancelText: 'Reload',
        confirmColor: 'warn'
      }
    });
  
    dialogRef.afterClosed().subscribe(async (forceSave) => {
      if (forceSave) {
        try {
          await this.apiService.updateVersion(
            this.project.id, 
            currentVersion.no, 
            retryUpdateData,
            true
          ).toPromise();
          this.snackBar.open('Version force saved', 'Close', { duration: 3000 });
          await this.loadVersions();
        } catch (err: any) {
          this.snackBar.open(err.error?.detail || 'Force save failed', 'Close', { 
            duration: 5000,
            panelClass: 'error-snackbar'
          });
        }
      } else {
        await this.loadVersions();
      }
    });
  }  
  
  async publishVersion() {
    if (!this.selectedVersion) return;

    const dialogRef = this.dialog.open(ConfirmDialogComponent, {
      width: '500px',
      data: {
        title: 'Publish Version',
        message: `Are you sure you want to publish version "${this.selectedVersion.caption}"? This will unpublish all other versions.`,
        confirmText: 'Publish',
        confirmColor: 'primary'
      }
    });

    dialogRef.afterClosed().subscribe(async (confirmed) => {
      if (confirmed && this.selectedVersion) {
        this.publishing = true;
        try {
          await this.apiService.publishVersion(
            this.project.id,
            this.selectedVersion.no
          ).toPromise();

          this.snackBar.open('Version published successfully', 'Close', { duration: 3000 });
          
          // Reload to get updated data
          await this.reloadProject();
          
        } catch (error: any) {
          this.snackBar.open(error.error?.detail || 'Failed to publish version', 'Close', { 
            duration: 5000,
            panelClass: 'error-snackbar'
          });
        } finally {
          this.publishing = false;
        }
      }
    });
  }

  async deleteVersion() {
    if (!this.selectedVersion || this.selectedVersion.published) return;

    const dialogRef = this.dialog.open(ConfirmDialogComponent, {
      width: '400px',
      data: {
        title: 'Delete Version',
        message: `Are you sure you want to delete version "${this.selectedVersion.caption}"?`,
        confirmText: 'Delete',
        confirmColor: 'warn'
      }
    });

    dialogRef.afterClosed().subscribe(async (confirmed) => {
      if (confirmed && this.selectedVersion) {
        try {
          await this.apiService.deleteVersion(
            this.project.id,
            this.selectedVersion.no
          ).toPromise();

          this.snackBar.open('Version deleted successfully', 'Close', { duration: 3000 });
          
          // Reload and select another version
          await this.reloadProject();
          
          if (this.versions.length > 0) {
            this.loadVersion(this.versions[0]);
          } else {
            this.selectedVersion = null;
          }
          
        } catch (error: any) {
          this.snackBar.open(error.error?.detail || 'Failed to delete version', 'Close', { 
            duration: 5000,
            panelClass: 'error-snackbar'
          });
        }
      }
    });
  }

  async testIntentDetection() {
    if (!this.testUserMessage.trim()) {
      this.snackBar.open('Please enter a test message', 'Close', { duration: 3000 });
      return;
    }

    this.testing = true;
    this.testResult = null;

    // Simulate intent detection test
    setTimeout(() => {
      // This is a mock - in real implementation, this would call the Spark service
      const intents = this.versionForm.get('intents')?.value || [];
      
      // Simple matching for demo
      let detectedIntent = null;
      let confidence = 0;

      for (const intent of intents) {
        // Check examples in all locales
        const allExamples = intent.examples || [];
        for (const example of allExamples) {
          const exampleText = typeof example === 'string' ? example : example.example;
          if (this.testUserMessage.toLowerCase().includes(exampleText.toLowerCase())) {
            detectedIntent = intent.name;
            confidence = 0.95;
            break;
          }
        }
        if (detectedIntent) break;
      }

      // Random detection for demo
      if (!detectedIntent && intents.length > 0) {
        const randomIntent = intents[Math.floor(Math.random() * intents.length)];
        detectedIntent = randomIntent.name;
        confidence = 0.65;
      }

      this.testResult = {
        success: true,
        intent: detectedIntent,
        confidence: confidence,
        parameters: detectedIntent ? this.extractTestParameters(detectedIntent) : []
      };

      this.testing = false;
    }, 1500);
  }

  private extractTestParameters(intentName: string): any[] {
    // Mock parameter extraction
    const intent = this.intents.value.find((i: any) => i.name === intentName);
    if (!intent) return [];

    return intent.parameters.map((param: any) => ({
      name: param.name,
      value: param.type === 'date' ? '2025-06-15' : 'test_value',
      extracted: Math.random() > 0.3
    }));
  }

  private async reloadProject() {
    this.loading = true;
    try {
      const projects = await this.apiService.getProjects().toPromise() || [];
      const updatedProject = projects.find(p => p.id === this.project.id);
      
      if (updatedProject) {
        this.project = updatedProject;
        this.versions = [...updatedProject.versions].sort((a, b) => b.no - a.no);
      }
    } catch (error) {
      console.error('Failed to reload project:', error);
    } finally {
      this.loading = false;
    }
  }

  async compareVersions() {
    if (this.versions.length < 2) {
      this.snackBar.open('Need at least 2 versions to compare', 'Close', { duration: 3000 });
      return;
    }
  
    const { default: VersionCompareDialogComponent } = await import('../version-compare-dialog/version-compare-dialog.component');
    
    this.dialog.open(VersionCompareDialogComponent, {
      width: '90vw',
      maxWidth: '1000px',
      maxHeight: '80vh',
      data: {
        versions: this.versions,
        selectedVersion: this.selectedVersion
      }
    });
  }
    
  close() {
    if (this.isDirty) {
      const dialogRef = this.dialog.open(ConfirmDialogComponent, {
        width: '400px',
        data: {
          title: 'Unsaved Changes',
          message: 'You have unsaved changes. Do you want to save before closing?',
          confirmText: 'Save & Close',
          cancelText: 'Discard Changes',
          showThirdOption: true,
          thirdOptionText: 'Cancel'
        }
      });

      dialogRef.afterClosed().subscribe(result => {
        if (result === 'confirm') {
          this.saveVersion();
          this.dialogRef.close();
        } else if (result === 'cancel') {
          this.dialogRef.close();
        }
        // If result is null or 'third', don't close
      });
    } else {
      this.dialogRef.close();
    }
  }
}