Telefone.java

Telefone.java

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import static java.util.FormattableFlags.ALTERNATE;
import static java.util.FormattableFlags.LEFT_JUSTIFY;

import java.io.Serializable;
import java.util.Formattable;
import java.util.Formatter;

import com.google.common.base.Objects;

public class Telefone implements Serializable, Formattable, Comparable<Telefone> {

        private static final long serialVersionUID = 1L;

        private final String numero;

        private Telefone(String numero) {
                this.numero = numero;
        }

        public static Telefone fromString(String s) {
                checkNotNull(s);
                String digits = s.replaceAll("\\D", "");
                checkArgument(digits.matches("1\\d{2}|1\\d{4}|0300\\d{8}|0800\\d{7,8}|\\d{8,13}"));
                return new Telefone(digits);
        }

        @Override
        public boolean equals(Object obj) {
                if (obj == this) {
                        return true;
                }
                if (obj instanceof Telefone) {
                        Telefone other = (Telefone) obj;
                        return Objects.equal(this.numero, other.numero);
                }
                return false;
        }

        @Override
        public int hashCode() {
                return Objects.hashCode(this.numero);
        }

        @Override
        public String toString() {
                return this.numero;
        }

        public boolean isContemDdd() {
                if (numero.matches("0[3,8]\\d+")) {
                        return false;
                }
                else {
                        return numero.length() > 9;
                }
        }

        public boolean isContemDdi() {
                if (numero.matches("0[3,8]\\d+")) {
                        return false;
                }
                else {
                        return numero.length() > 11;
                }
        }

        @Override
        public void formatTo(Formatter formatter, int flags, int width, int precision) {
                StringBuilder sb = new StringBuilder();
                boolean alternate = (flags & ALTERNATE) == ALTERNATE;
                if (alternate) {
                        sb.append(numero);
                }
                else {
                        switch (numero.length()) {
                        case 3:
                                sb.append(numero);
                                break;
                        case 5:
                                sb.append(numero);
                                break;
                        case 8:
                                sb.append(String.format("%s-%s", numero.substring(0, 4), numero.substring(4)));
                                break;
                        case 9:
                                sb.append(String.format("%s-%s", numero.substring(0, 5), numero.substring(5)));
                                break;
                        case 10:
                                if (numero.matches("0800\\d+")) {
                                        sb.append(String.format("%s-%s-%s", numero.substring(0, 4), numero.substring(4, 6),
                                                        numero.substring(6)));
                                }
                                else {
                                        sb.append(String.format("(%s) %s-%s", numero.substring(0, 2), numero.substring(2, 6),
                                                        numero.substring(6)));
                                }
                                break;
                        case 11:
                                if (numero.matches("0[3,8]00\\d+")) {
                                        sb.append(String.format("%s-%s-%s", numero.substring(0, 4), numero.substring(4, 7),
                                                        numero.substring(7)));
                                }
                                else {
                                        sb.append(String.format("(%s) %s-%s", numero.substring(0, 2), numero.substring(2, 7),
                                                        numero.substring(7)));
                                }
                                break;
                        case 12:
                                sb.append(String.format("+%s (%s) %s-%s", numero.substring(0, 2), numero.substring(2, 4),
                                                numero.substring(4, 8), numero.substring(8)));
                                break;
                        case 13:
                                sb.append(String.format("+%s (%s) %s-%s", numero.substring(0, 2), numero.substring(2, 4),
                                                numero.substring(4, 9), numero.substring(9)));
                                break;
                        }
                }
                int length = sb.length();
                if (length < width) {
                        for (int i = 0; i < width - length; i++) {
                                if (alternate) {
                                        sb.insert(0, '0');
                                }
                                else {
                                        boolean leftJustified = (flags & LEFT_JUSTIFY) == LEFT_JUSTIFY;
                                        if (leftJustified) {
                                                sb.append(' ');
                                        }
                                        else {
                                                sb.insert(0, ' ');
                                        }
                                }
                        }
                }
                formatter.format(sb.toString());
        }

        @Override
        public int compareTo(Telefone o) {
                return this.numero.compareTo(o.numero);
        }

}

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