software.crldev.elrondspringbootstarterreactive.domain.esdt.common.TokenName Maven / Gradle / Ivy

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A SpringBoot Starter solution designed to ensure easy and efficient integration with the Elrond Network using a Reactive API layer.

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package software.crldev.elrondspringbootstarterreactive.domain.esdt.common;

import org.bouncycastle.util.encoders.Hex;
import software.crldev.elrondspringbootstarterreactive.error.ErrorMessage;
import static io.netty.util.internal.StringUtil.isNullOrEmpty;

/**
 * Value object for ESDT token name
 *
 * @author carlo_stanciu
 */
public final class TokenName {
    private final String value;

    private TokenName(String name) {
        this.value = name;
    }

    /**
     * Creates a TokenName object from String input
     *
     * @return - an instance of TokenName
     */
    public static TokenName fromString(String name) {
        if (isNullOrEmpty(name)) throw new IllegalArgumentException(ErrorMessage.TOKEN_NAME.getValue());
        var value = name.replaceAll("\\s+", "");
        verifyFormat(value);
        return new TokenName(value);
    }

    /**
     * Getter
     *
     * @return - hex value of the Token Name
     */
    public String getHex() {
        return Hex.toHexString(value.getBytes());
    }

    /**
     * Returns the value
     *
     * @return - value in String format
     */
    @Override
    public String toString() {
        return value;
    }

    private static void verifyFormat(String value) {
        if (!value.matches("^[a-zA-Z0-9]{3,20}+$")) throw new IllegalArgumentException(ErrorMessage.TOKEN_NAME.getValue());
    }

    public String getValue() {
        return this.value;
    }

    @Override
    public boolean equals(final Object o) {
        if (o == this) return true;
        if (!(o instanceof TokenName)) return false;
        final TokenName other = (TokenName) o;
        final Object this$value = this.getValue();
        final Object other$value = other.getValue();
        if (this$value == null ? other$value != null : !this$value.equals(other$value)) return false;
        return true;
    }

    @Override
    public int hashCode() {
        final int PRIME = 59;
        int result = 1;
        final Object $value = this.getValue();
        result = result * PRIME + ($value == null ? 43 : $value.hashCode());
        return result;
    }
}