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package ui;
import model.asn1.exceptions.ParseException;
import model.ca.Template;
public class TemplateSetScreen implements UIHandler {
private final JCA session;
/**
* EFFECTS: Init with session.
*/
public TemplateSetScreen(JCA session) {
this.session = session;
}
private Template template;
@Override
public void help() {
System.out.println("show\tView the current template settings\n"
+ "set\tSet key value\n"
+ "commit\tSave the template\n"
+ "exit\tDiscard changes\n"
+ "help\tPrint this help message\n");
}
private void handleSetSubject(String val) {
try {
template.setSubject(val);
} catch (ParseException e) {
System.out.println(e.getMessage());
}
}
private void handleSetValidity(String val) {
if (val == null) {
System.out.println("Cannot unset validity");
return;
}
try {
long i = Long.parseLong(val);
if (i <= 0) {
System.out.println("Invalid validity days");
return;
}
template.setValidity(i);
} catch (NumberFormatException ignored) {
System.out.println("Invalid validity days");
}
}
private void handleSet(String... args) {
if (args.length != 2 && args.length != 3) {
System.out.println("Usage: set <key> <value>");
System.out.println("Supported keys: subject validity");
return;
}
String val = args.length == 3 ? args[2] : null;
switch (args[1]) {
case "subject":
handleSetSubject(val);
break;
case "validity":
handleSetValidity(val);
break;
default:
System.out.println("Unknown key");
break;
}
}
/**
* EFFECTS: Add the template to store and switch to templates screen.
* MODIFIES: session
*/
@Override
public void commit() {
session.getTemplates().add(template);
session.setScreen(Screen.TEMPLATES);
session.log("A new template is added.");
}
/**
* EFFECTS: Show template info.
*/
@Override
public void show() {
System.out.println("Subject:\t" + template.getSubject());
System.out.println("Validity:\t" + template.getValidity() + " days");
}
@Override
public void command(String... args) {
switch (args[0]) {
case "set":
handleSet(args);
break;
default:
case "help":
help();
break;
}
}
/**
* EFFECTS: Return to templates list and clear the current template in editing.
*/
@Override
public Screen exit() {
template = null;
return Screen.TEMPLATES;
}
/**
* EFFECTS: yuuta@JCA /templates/name/ %
*/
@Override
public String getPS1() {
return String.format("/templates/%s/ %%", template.getName());
}
/**
* EFFECT: Edit args[0].
* REQUIRES: args.length = 1; args[0] instanceof Template
* MODIFIES: args[0]
*/
@Override
public void enter(Object... args) {
template = (Template) args[0];
}
}
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