📊 Download Report Module - TypeScript Functions Documentation

/**
 * Component initialization - sets up user context, route parameters, and forms
 * Determines user type and permissions for report access
 * Configures report type based on current route (CDR or SMS)
 * Initializes filter form with validation rules
 * Loads dropdown options for report types and status
 * Sets up user list for admin filtering
 * @returns {void}
 */
ngOnInit(): void

/**
 * Retrieves download report details based on report type
 * Loads report data and refreshes the data table
 * Handles success and error responses with user feedback
 * Reinitializes DataTables for updated data display
 * @param {any} type - Report type identifier (cdr, sms, etc.)
 * @returns {void}
 */
getreportdownload(type: any): void

/**
 * Toggles the visibility of the filter panel
 * Shows or hides advanced filtering options
 * Manages filter panel state for better UX
 * @returns {void}
 */
showfilter(): void

/**
 * Resets all filter form fields to default values
 * Clears form validation errors and submissions state
 * Reloads original report data without filters
 * Maintains report type context after reset
 * @returns {void}
 */
resetfilter(): void

/**
 * Processes filter form submission
 * Validates form data and applies filters to report data
 * Handles form validation errors and user feedback
 * Updates data table with filtered results
 * @returns {void}
 */
onSubmitfilter(): void

/**
 * Initiates report download process
 * Validates download parameters and user permissions
 * Triggers file download through service layer
 * Provides user feedback during download process
 * @param {any} data - Download request data object
 * @returns {void}
 */
download(data: any): void

/**
 * Retrieves user list for filtering options
 * Loads available users for SAN-based filtering
 * Handles admin-only access to user data
 * Populates dropdown options for user selection
 * @returns {void}
 */
getUserlist(): void

/**
 * Loads filter dropdown options from configuration
 * Initializes report type and status options
 * Applies context-based filtering (CDR vs SMS)
 * Sets up dynamic filter options based on user permissions
 * @returns {void}
 */
loadFilterOptions(): void

/**
 * Retrieves download report details from API
 * Fetches report data based on specified type
 * Handles API response parsing and error handling
 * Returns Observable with report data
 * @param {string} type - Report type identifier
 * @returns {Observable<any>} API response with report data
 */
get_downloadetails(type: string): Observable<any>

/**
 * Applies filters to report data via API
 * Sends filter criteria to backend for processing
 * Handles filter validation and data retrieval
 * Returns filtered report results
 * @param {any} filterData - Filter criteria object
 * @returns {Observable<any>} Filtered report data
 */
applyFilter(filterData: any): Observable<any>

/**
 * Initiates file download through API
 * Handles binary file download requests
 * Manages download progress and error handling
 * Triggers browser download mechanism
 * @param {any} downloadData - Download request parameters
 * @returns {Observable<Blob>} File download stream
 */
downloadFile(downloadData: any): Observable<Blob>

/**
 * Retrieves user list for filtering options
 * Fetches available users from user management API
 * Handles permission-based user data access
 * Returns list of users for dropdown population
 * @returns {Observable<any>} User list data
 */
getUserList(): Observable<any>

/**
 * Reactive form for filter criteria
 * Contains controls for date range, request ID, type, status, and SAN
 * Includes validation rules for each field
 */
public filterForm: FormGroup

/**
 * Tracks form submission state for validation display
 * Used to show validation errors after form submission attempt
 */
public submitted: boolean

/**
 * Controls visibility of the filter panel
 * Toggles between showing and hiding advanced filter options
 */
show_filter: boolean

/**
 * Array containing download report data
 * Populated from API responses and displayed in data table
 */
downloadreport: any[]

/**
 * Array containing report type options
 * Filtered based on current route context (CDR vs SMS)
 */
filteredTypes: any[]

/**
 * Array containing status options for filtering
 * Loaded from configuration file
 */
status1: any[]

/**
 * Array containing user list for admin filtering
 * Used for SAN-based report filtering
 */
userlist: any[]

/**
 * Current user type for permission-based functionality
 * Determines visibility of admin-only features
 */
userType: any

/**
 * Current report type based on route (cdr or sms)
 * Used for context-specific filtering and data loading
 */
type: any

/**
 * Current route-based report type identifier
 * Extracted from URL segments for dynamic behavior
 */
reportType: any

/**
 * Success message for user feedback
 * Displayed temporarily after successful operations
 */
responseMessage: any

/**
 * Error message for user feedback
 * Displayed when operations fail or validation errors occur
 */
errMessage: any

// Component usage
this.getreportdownload('cdr');

// Service usage
this.downloadreportService.get_downloadetails('cdr')
  .subscribe(response => {
    if (response.status === 201) {
      this.downloadreport = response.data;
    }
  });

// Filter form submission
onSubmitfilter() {
  if (this.filterForm.valid) {
    this.data.applyFilter(this.filterForm.value)
      .subscribe(response => {
        this.downloadreport = response.data;
      });
  }
}

// Download file operation
download(reportData) {
  this.downloadreportService.downloadFile(reportData)
    .subscribe(blob => {
      const url = window.URL.createObjectURL(blob);
      const anchor = document.createElement('a');
      anchor.href = url;
      anchor.download = 'report.csv';
      anchor.click();
      window.URL.revokeObjectURL(url);
    });
}