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package io.dico.dicore.command.chat.help.defaults;
import io.dico.dicore.command.Command;
import io.dico.dicore.command.EMessageType;
import io.dico.dicore.command.ExecutionContext;
import io.dico.dicore.command.ICommandAddress;
import io.dico.dicore.Formatting;
import io.dico.dicore.command.chat.help.IHelpComponent;
import io.dico.dicore.command.chat.help.IHelpTopic;
import io.dico.dicore.command.chat.help.SimpleHelpComponent;
import io.dico.dicore.command.parameter.Parameter;
import io.dico.dicore.command.parameter.ParameterList;
import org.bukkit.permissions.Permissible;
import java.util.Collections;
import java.util.List;
import java.util.Map;
public class SyntaxHelpTopic implements IHelpTopic {
@Override
public List<IHelpComponent> getComponents(ICommandAddress target, Permissible viewer, ExecutionContext context, boolean isForPage) {
if (!target.hasCommand()) {
return Collections.emptyList();
}
if (target.hasChildren()) {
if (!isForPage) {
// HelpPages will send help instead of syntax, which might in turn include syntax as well.
return Collections.emptyList();
}
if (!target.hasUserDeclaredCommand() && !target.getCommand().getParameterList().hasAnyParameters()) {
// no point adding syntax at all
return Collections.emptyList();
}
}
StringBuilder line = new StringBuilder();
if (isForPage)
line.append(context.getFormat(EMessageType.SYNTAX))
.append("Syntax: ");
line.append('/')
.append(context.getFormat(EMessageType.INSTRUCTION))
.append(target.getAddress())
.append(' ');
addShortSyntax(line, target, context);
return Collections.singletonList(new SimpleHelpComponent(line.toString()));
}
private static void addShortSyntax(StringBuilder builder, ICommandAddress address, ExecutionContext ctx) {
if (address.hasCommand()) {
Formatting syntaxColor = ctx.getFormat(EMessageType.SYNTAX);
Formatting highlight = ctx.getFormat(EMessageType.HIGHLIGHT);
builder.append(syntaxColor);
Command command = address.getCommand();
ParameterList list = command.getParameterList();
Parameter<?, ?> repeated = list.getRepeatedParameter();
int requiredCount = list.getRequiredCount();
List<Parameter<?, ?>> indexedParameters = list.getIndexedParameters();
for (int i = 0, n = indexedParameters.size(); i < n; i++) {
builder.append(i < requiredCount ? " <" : " [");
Parameter<?, ?> param = indexedParameters.get(i);
builder.append(param.getName());
if (param == repeated) {
builder.append(highlight).append("...").append(syntaxColor);
}
builder.append(i < requiredCount ? '>' : ']');
}
Map<String, Parameter<?, ?>> parametersByName = list.getParametersByName();
for (Parameter<?, ?> param : parametersByName.values()) {
if (param.isFlag()) {
builder.append(" [").append(param.getName());
if (param.expectsInput()) {
builder.append(" <").append(param.getName()).append(">");
}
builder.append(']');
}
}
} else {
builder.append(' ');
}
}
}
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