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/**
* Copyright (C) 2022, 2024, 2025 Adrien Hopkins
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package sevenUnitsGUI;
import java.math.RoundingMode;
import sevenUnits.unit.LinearUnitValue;
import sevenUnits.unit.UnitValue;
/**
* A record of a conversion between units or expressions
*
* @since 2022-04-09
* @since v0.4.0
*/
public final class UnitConversionRecord {
/**
* Gets a {@code UnitConversionRecord} from two linear unit values
*
* @param input input unit & value
* @param output output unit & value
* @return unit conversion record
* @since 2022-04-09
* @since v0.4.0
*/
public static UnitConversionRecord fromLinearValues(LinearUnitValue input,
LinearUnitValue output) {
return UnitConversionRecord.valueOf(input.getUnit().getName(),
output.getUnit().getName(),
input.getValue().toString(false, RoundingMode.HALF_EVEN),
output.getValue().toString(false, RoundingMode.HALF_EVEN));
}
/**
* Gets a {@code UnitConversionRecord} from two unit values
*
* @param input input unit & value
* @param output output unit & value
* @return unit conversion record
* @since 2022-04-09
* @since v0.4.0
*/
public static UnitConversionRecord fromValues(UnitValue input,
UnitValue output) {
return UnitConversionRecord.valueOf(input.getUnit().getName(),
output.getUnit().getName(), String.valueOf(input.getValue()),
String.valueOf(output.getValue()));
}
/**
* Gets a {@code UnitConversionRecord}
*
* @param fromName name of unit or expression that was converted
* from
* @param toName name of unit or expression that was converted to
* @param inputValueString string representing input value
* @param outputValueString string representing output value
* @return unit conversion record
* @since 2022-04-09
* @since v0.4.0
*/
public static UnitConversionRecord valueOf(String fromName, String toName,
String inputValueString, String outputValueString) {
return new UnitConversionRecord(fromName, toName, inputValueString,
outputValueString);
}
/** The name of the unit or expression that was converted from */
private final String fromName;
/** The name of the unit or expression that was converted to */
private final String toName;
/**
* A string representing the input value. It doesn't need to be the same as
* the input value's string representation; it could be rounded, for example.
*/
private final String inputValueString;
/**
* A string representing the input value. It doesn't need to be the same as
* the input value's string representation; it could be rounded, for example.
*/
private final String outputValueString;
/**
* @param fromName name of unit or expression that was converted
* from
* @param toName name of unit or expression that was converted to
* @param inputValueString string representing input value
* @param outputValueString string representing output value
* @since 2022-04-09
* @since v0.4.0
*/
private UnitConversionRecord(String fromName, String toName,
String inputValueString, String outputValueString) {
this.fromName = fromName;
this.toName = toName;
this.inputValueString = inputValueString;
this.outputValueString = outputValueString;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (!(obj instanceof UnitConversionRecord))
return false;
final var other = (UnitConversionRecord) obj;
if (this.fromName == null) {
if (other.fromName != null)
return false;
} else if (!this.fromName.equals(other.fromName))
return false;
if (this.inputValueString == null) {
if (other.inputValueString != null)
return false;
} else if (!this.inputValueString.equals(other.inputValueString))
return false;
if (this.outputValueString == null) {
if (other.outputValueString != null)
return false;
} else if (!this.outputValueString.equals(other.outputValueString))
return false;
if (this.toName == null) {
if (other.toName != null)
return false;
} else if (!this.toName.equals(other.toName))
return false;
return true;
}
/**
* @return name of unit or expression that was converted from
* @since 2022-04-09
* @since v0.4.0
*/
public String fromName() {
return this.fromName;
}
@Override
public int hashCode() {
final var prime = 31;
var result = 1;
result = prime * result
+ (this.fromName == null ? 0 : this.fromName.hashCode());
result = prime * result + (this.inputValueString == null ? 0
: this.inputValueString.hashCode());
result = prime * result + (this.outputValueString == null ? 0
: this.outputValueString.hashCode());
result = prime * result
+ (this.toName == null ? 0 : this.toName.hashCode());
return result;
}
/**
* @return string representing input value
* @since 2022-04-09
* @since v0.4.0
*/
public String inputValueString() {
return this.inputValueString;
}
/**
* @return string representing output value
* @since 2022-04-09
* @since v0.4.0
*/
public String outputValueString() {
return this.outputValueString;
}
/**
* @return name of unit or expression that was converted to
* @since 2022-04-09
* @since v0.4.0
*/
public String toName() {
return this.toName;
}
@Override
public String toString() {
final var inputString = this.inputValueString.isBlank() ? this.fromName
: this.inputValueString + " " + this.fromName;
final var outputString = this.outputValueString.isBlank() ? this.toName
: this.outputValueString + " " + this.toName;
return inputString + " = " + outputString;
}
}
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