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package io.dico.dicore.command.parameter;
import io.dico.dicore.command.CommandException;
import io.dico.dicore.command.ExecutionContext;
import io.dico.dicore.command.Validate;
import io.dico.dicore.command.annotation.Range;
import io.dico.dicore.command.parameter.type.ParameterType;
import org.bukkit.Location;
import java.util.List;
import java.util.Objects;
/**
* IParameter object.
*
* @param <TResult> the parameter's type
* @param <TParamInfo> the parameter info object. Example: {@link Range.Memory}
*/
public class Parameter<TResult, TParamInfo> {
private final String name;
private final String description;
private final ParameterType<TResult, TParamInfo> parameterType;
private final TParamInfo paramInfo;
private final boolean isPrimitive;
private final boolean flag;
private final String flagPermission;
public Parameter(String name, String description, ParameterType<TResult, TParamInfo> parameterType, TParamInfo paramInfo) {
this(name, description, parameterType, paramInfo, false, null);
}
public Parameter(String name, String description, ParameterType<TResult, TParamInfo> parameterType, TParamInfo paramInfo, boolean flag, String flagPermission) {
this(name, description, parameterType, paramInfo, false, flag, flagPermission);
}
public Parameter(String name, String description, ParameterType<TResult, TParamInfo> parameterType, TParamInfo paramInfo, boolean isPrimitive, boolean flag, String flagPermission) {
this.name = Objects.requireNonNull(name);
this.description = description == null ? "" : description;
this.parameterType = flag ? parameterType.asFlagParameter() : parameterType;
/*
if (paramInfo == null && parameterType.getParameterConfig() != null) {
paramInfo = parameterType.getParameterConfig().getDefaultValue();
}
*/
this.paramInfo = paramInfo;
this.isPrimitive = isPrimitive;
this.flag = flag;
this.flagPermission = flagPermission;
if (flag && !name.startsWith("-")) {
throw new IllegalArgumentException("Flag parameter's name must start with -");
} else if (!flag && name.startsWith("-")) {
throw new IllegalArgumentException("Non-flag parameter's name may not start with -");
}
}
public TResult parse(ExecutionContext context, ArgumentBuffer buffer) throws CommandException {
if (getFlagPermission() != null) {
Validate.isAuthorized(context.getSender(), getFlagPermission(), "You do not have permission to use the flag " + name);
}
return checkAllowed(context, parameterType.parseForContext(this, context, buffer));
}
public TResult getDefaultValue(ExecutionContext context, ArgumentBuffer buffer) throws CommandException {
return parameterType.getDefaultValueForContext(this, context, buffer);
}
public List<String> complete(ExecutionContext context, Location location, ArgumentBuffer buffer) {
return parameterType.completeForContext(this, context, location, buffer);
}
public TResult checkAllowed(ExecutionContext context, TResult result) throws CommandException {
return result;
}
public String getName() {
return name;
}
public String getDescription() {
return description;
}
public ParameterType<TResult, TParamInfo> getType() {
return parameterType;
}
public TParamInfo getParamInfo() {
return paramInfo;
}
public boolean isPrimitive() {
return isPrimitive;
}
public boolean isFlag() {
return flag;
}
// override with false for the flag parameter that simply must be present
public boolean expectsInput() {
return parameterType.getExpectedAmountOfConsumedArguments() > 0;
}
public String getFlagPermission() {
return flag ? flagPermission : null;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof Parameter)) return false;
/*
IParameter<?, ?> parameter = (IParameter<?, ?>) o;
return name.equals(parameter.name);
*/
return false;
}
@Override
public int hashCode() {
return name.hashCode();
}
}
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