🔐 KYC Module - TypeScript Functions

/**
 * Component initialization with KYC workflow setup
 * Loads KYC configuration and validation rules
 * Initializes multi-step form wizard
 * Sets up digital signature capture interface
 * Configures document upload and verification
 * @returns {void}
 */
ngOnInit(): void

/**
 * Component cleanup and data preservation
 * Saves KYC draft data and progress
 * Cleans up file upload resources
 * Unsubscribes from observables
 * @returns {void}
 */
ngOnDestroy(): void

/**
 * Sets up comprehensive KYC form with validation
 * Configures reactive form controls and validators
 * Sets up conditional field validation
 * Initializes document upload requirements
 * Prepares digital signature capture
 * @returns {void}
 */
initializeKYCForm(): void

/**
 * Validates specific step in KYC workflow
 * Checks required fields and document uploads
 * Validates identity verification requirements
 * Ensures compliance with regulatory rules
 * Returns validation status for step progression
 * @param {number} stepIndex - Step to validate
 * @returns {boolean} True if step is valid
 */
validateStep(stepIndex: number): boolean

/**
 * Advances to next step in KYC workflow
 * Validates current step before progression
 * Updates workflow progress indicators
 * Saves step data and prepares next step
 * Handles conditional step logic
 * @returns {void}
 */
nextStep(): void

/**
 * Returns to previous step in KYC workflow
 * Preserves current step data
 * Updates workflow navigation state
 * Restores previous step form state
 * @returns {void}
 */
previousStep(): void

/**
 * Handles document upload and validation
 * Validates file type, size, and quality
 * Performs OCR and data extraction
 * Initiates document verification process
 * Updates upload progress and status
 * @param {File} file - Document file to upload
 * @param {string} documentType - Type of document
 * @returns {void}
 */
uploadDocument(file: File, documentType: string): void

/**
 * Initiates document verification process
 * Submits document to verification service
 * Performs authenticity checks and validation
 * Updates verification status and results
 * Handles verification success and failure states
 * @param {string} documentId - Document ID to verify
 * @returns {void}
 */
verifyDocument(documentId: string): void

/**
 * Extracts data from uploaded documents
 * Uses OCR to extract text and structured data
 * Parses identity information and details
 * Validates extracted data accuracy
 * Returns structured document data
 * @param {any} document - Document to process
 * @returns {any} Extracted document data
 */
extractDocumentData(document: any): any

/**
 * Sets up digital signature capture interface
 * Configures signature pad with drawing options
 * Sets up touch and mouse event handlers
 * Initializes signature validation rules
 * Prepares signature storage and processing
 * @returns {void}
 */
initializeSignaturePad(): void

/**
 * Captures and processes digital signature
 * Converts signature pad data to image format
 * Validates signature quality and completeness
 * Generates signature hash and metadata
 * Returns signature data for storage
 * @returns {string} Base64 signature data
 */
captureSignature(): string

/**
 * Clears signature pad for re-signing
 * Resets signature pad canvas
 * Clears signature validation state
 * Updates UI to allow new signature
 * @returns {void}
 */
clearSignature(): void

/**
 * Validates required field input
 * Checks for non-empty and non-whitespace values
 * Prevents submission of empty fields
 * Returns validation error object or null
 * @param {AbstractControl} control - Form control to validate
 * @returns {ValidationErrors | null} Validation result
 */
validateRequiredField(control: AbstractControl): ValidationErrors | null

/**
 * Validates email field format
 * Applies email validation pattern
 * Ensures proper email format compliance
 * Handles validation error display
 * @param {string} fieldName - Name of email field to validate
 * @returns {void}
 */
validateEmailField(fieldName: string): void

/**
 * Formats phone numbers for display and validation
 * Applies consistent phone number formatting
 * Handles various input formats and country codes
 * Returns standardized phone number format
 * @param {any} phoneNumber - Phone number to format
 * @param {string} fieldName - Field name for context
 * @returns {string} Formatted phone number
 */
formatPhoneNumber(phoneNumber: any, fieldName: string): string

/**
 * Handles voice service question responses
 * Processes voice service question changes
 * Updates question state and visibility
 * Handles conditional question logic
 * Manages form validation state
 * Controls wizard navigation buttons
 * @param {any} event - Change event from question input
 * @param {any} element - Question element data
 * @param {number} index - Question index
 * @returns {void}
 */
VoiceQuestionChange(event: any, element: any, index: number): void

/**
 * Handles message service question responses
 * Processes message service question changes
 * Updates question state and visibility
 * Handles conditional question logic
 * Manages form validation state
 * Controls wizard navigation buttons
 * @param {any} event - Change event from question input
 * @param {any} element - Question element data
 * @param {number} index - Question index
 * @returns {void}
 */
messageQuestionChange(event: any, element: any, index: number): void

/**
 * Generates comprehensive KYC PDF document
 * Compiles all KYC data and documents
 * Creates formatted PDF with verification details
 * Includes digital signatures and timestamps
 * Generates compliance report
 * @returns {void}
 */
generateKYCPDF(): void

/**
 * Downloads generated KYC PDF document
 * Prepares PDF for download with proper filename
 * Handles browser download functionality
 * Logs download activity for audit trail
 * @returns {void}
 */
downloadPDF(): void

/**
 * Updates KYC verification status
 * Changes verification status in system
 * Triggers status change notifications
 * Updates compliance records
 * Logs status change for audit trail
 * @param {string} status - New verification status
 * @returns {void}
 */
updateVerificationStatus(status: string): void

/**
 * Submits KYC data for verification processing
 * Validates KYC data completeness and format
 * Submits to verification services and databases
 * Initiates compliance checks and risk assessment
 * Returns submission status and tracking information
 * @param {any} kycData - Complete KYC information
 * @returns {Observable<any>} Submission result
 */
submitKYCData(kycData: any): Observable<any>

/**
 * Retrieves current KYC verification status
 * Fetches verification status and progress
 * Returns detailed verification information
 * Includes compliance scores and risk ratings
 * @param {string} customerId - Customer ID to check
 * @returns {Observable<any>} Verification status data
 */
getVerificationStatus(customerId: string): Observable<any>

/**
 * Validates uploaded documents through verification service
 * Performs document authenticity checks
 * Extracts and validates document information
 * Checks against fraud databases
 * Returns validation results and confidence scores
 * @param {any} documentData - Document to validate
 * @returns {Observable<any>} Validation results
 */
validateDocument(documentData: any): Observable<any>

/**
 * Generates comprehensive compliance report
 * Compiles all KYC verification data
 * Creates regulatory compliance summary
 * Includes risk assessment and recommendations
 * Returns formatted compliance report
 * @param {string} customerId - Customer to generate report for
 * @returns {Observable<any>} Compliance report data
 */
generateComplianceReport(customerId: string): Observable<any>