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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.node.admin.task.util.template;
import com.yahoo.vespa.hosted.node.admin.task.util.text.CursorRange;
import java.util.List;
import java.util.Map;
import java.util.Optional;
/**
* A form is an instance of a template to be filled, e.g. values set for variable sections, etc.
*
* @see Template
* @author hakonhall
*/
public class Form extends Section {
private final Form parent;
private final List<Section> sections;
private final Map<String, String> variables;
private final Map<String, SubformSection> subforms;
Form(Form parent, CursorRange range, List<Section> sections, Map<String, String> variables,
Map<String, SubformSection> subforms) {
super(range);
this.parent = parent;
this.sections = List.copyOf(sections);
this.variables = variables; // Mutable and referenced by the variable sections
this.subforms = Map.copyOf(subforms);
}
/** Set the value of a variable expression, e.g. %{=color}. */
public Form set(String name, String value) {
variables.put(name, value);
return this;
}
public Form set(String name, boolean value) { return set(name, Boolean.toString(value)); }
public Form set(String name, int value) { return set(name, Integer.toString(value)); }
public Form set(String name, long value) { return set(name, Long.toString(value)); }
public Form set(String name, String format, String first, String... rest) {
var args = new Object[1 + rest.length];
args[0] = first;
System.arraycopy(rest, 0, args, 1, rest.length);
var value = String.format(format, args);
return set(name, value);
}
/** Add an instance of a subform section after any previously added (for the given name) */
public Form add(String name) {
var section = subforms.get(name);
if (section == null) {
throw new NoSuchNameTemplateException(this, name);
}
return section.add();
}
public String render() {
var buffer = new StringBuilder((int) (range().length() * 1.2 + 128));
appendTo(buffer);
return buffer.toString();
}
@Override
public void appendTo(StringBuilder buffer) {
sections.forEach(section -> section.appendTo(buffer));
}
Optional<String> getVariableValue(String name) {
String value = variables.get(name);
if (value != null) return Optional.of(value);
if (parent != null) {
return parent.getVariableValue(name);
}
return Optional.empty();
}
}
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