package model;

import java.util.Objects;

/**

* Represents a data entry operator in the POS system.

* Contains information about the operator including personal details,

* credentials, and work assignment.

*/

public class DataEntryOperator {

// Instance variables

private String username;

private String name;

private String email;

private String password;

private String role;

private String branchCode;

private double salary;

// Constants

private static final double MIN_SALARY = 0.0;

private static final String DEFAULT_ROLE = "DATA_ENTRY_OPERATOR";

/**

* Default constructor

*/

public DataEntryOperator() {

this.role = DEFAULT_ROLE;

this.salary = 0.0;

}

/**

* Constructor with basic operator information

*

* @param username unique username for the operator

* @param name full name of the operator

* @param email email address of the operator

* @param password password for the operator account

* @param branchCode branch code where operator works

*/

public DataEntryOperator(String username, String name, String email, String password, String branchCode) {

this.username = username;

this.name = name;

this.email = email;

this.password = password;

this.branchCode = branchCode;

this.role = DEFAULT_ROLE;

this.salary = 0.0;

}

/**

* Constructor with all operator details

*

* @param username unique username for the operator

* @param name full name of the operator

* @param email email address of the operator

* @param password password for the operator account

* @param role role of the operator

* @param branchCode branch code where operator works

* @param salary salary of the operator

*/

public DataEntryOperator(String username, String name, String email, String password,

String role, String branchCode, double salary) {

this.username = username;

this.name = name;

this.email = email;

this.password = password;

this.role = role != null ? role : DEFAULT_ROLE;

this.branchCode = branchCode;

this.salary = validateSalary(salary);

}

// Validation methods

private double validateSalary(double salary) {

if (salary < MIN_SALARY) {

throw new IllegalArgumentException("Salary cannot be negative");

}

return salary;

}

// Business logic methods

/**

* Check if the operator has a valid username

*

* @return true if username is not null or empty, false otherwise

*/

public boolean hasValidUsername() {

return username != null && !username.trim().isEmpty();

}

/**

* Check if the operator has a valid email address

*

* @return true if email is not null or empty, false otherwise

*/

public boolean hasValidEmail() {

return email != null && !email.trim().isEmpty();

}

/**

* Check if the operator has a valid password

*

* @return true if password is not null or empty, false otherwise

*/

public boolean hasValidPassword() {

return password != null && !password.trim().isEmpty();

}

/**

* Check if the operator is assigned to a branch

*

* @return true if branch code is not null or empty, false otherwise

*/

public boolean isAssignedToBranch() {

return branchCode != null && !branchCode.trim().isEmpty();

}

/**

* Get the display name for the operator

*

* @return display name or username if name is not available

*/

public String getDisplayName() {

if (name != null && !name.trim().isEmpty()) {

return name.trim();

}

return username != null ? username : "Unknown Operator";

}

/**

* Get the formatted salary string

*

* @return formatted salary with currency symbol

*/

public String getFormattedSalary() {

return String.format("$%.2f", salary);

}

/**

* Check if the operator has administrative privileges

*

* @return true if role contains "ADMIN" or "MANAGER", false otherwise

*/

public boolean hasAdminPrivileges() {

if (role == null) {

return false;

}

String upperRole = role.toUpperCase();

return upperRole.contains("ADMIN") || upperRole.contains("MANAGER");

}

/**

* Check if the operator has data entry privileges

*

* @return true if role contains "DATA_ENTRY" or "OPERATOR", false otherwise

*/

public boolean hasDataEntryPrivileges() {

if (role == null) {

return false;

}

String upperRole = role.toUpperCase();

return upperRole.contains("DATA_ENTRY") || upperRole.contains("OPERATOR");

}

// Getters and Setters

public String getUsername() {

return username;

}

public void setUsername(String username) {

this.username = username;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getEmail() {

return email;

}

public void setEmail(String email) {

this.email = email;

}

public String getPassword() {

return password;

}

public void setPassword(String password) {

this.password = password;

}

public String getRole() {

return role;

}

public void setRole(String role) {

this.role = role != null ? role : DEFAULT_ROLE;

}

public String getBranchCode() {

return branchCode;

}

public void setBranchCode(String branchCode) {

this.branchCode = branchCode;

}

public double getSalary() {

return salary;

}

public void setSalary(double salary) {

this.salary = validateSalary(salary);

}

// Object methods

@Override

public String toString() {

return String.format("DataEntryOperator{username='%s', name='%s', role='%s', branch='%s'}",

username, getDisplayName(), role, branchCode);

}

@Override

public boolean equals(Object obj) {

if (this == obj)

return true;

if (obj == null || getClass() != obj.getClass())

return false;

DataEntryOperator that = (DataEntryOperator) obj;

return Objects.equals(username, that.username);

}

@Override

public int hashCode() {

return Objects.hash(username);

}

}