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package derms.replica.replica1;
import java.net.MalformedURLException;
import java.net.UnknownHostException;
public class ResponderClientCLI extends CLI {
public static final String usage = "Usage: java ResponderClientCLI <city> <id number>";
private final ResponderClient client;
private ResponderClientCLI(City city, short idNum) {
client = new ResponderClient(city, idNum);
System.out.println("ID: "+client.id);
commands.put("add", new Add());
cmdDescriptions.add(new Description(
"add <resource ID> <resource name> <duration>",
"Add a resource to the server"));
commands.put("remove", new Remove());
cmdDescriptions.add(new Description(
"remove <resource ID> <duration>",
"Decrease the duration of a resource. If duration is negative, the tresource is removed entirely."));
commands.put("list", new List());
cmdDescriptions.add(new Description(
"list <resource name>",
"List available resources."));
argDescriptions.add(new Description(
"<resource ID>",
"3-letter city code followed by 4-digit number."));
argDescriptions.add(new Description(
"<resource name>",
"E.g., AMBULANCE."));
argDescriptions.add(new Description(
"<duration>",
"A number representing a time period."));
}
public static void main(String[] cmdlineArgs) {
Args args = null;
try {
args = new Args(cmdlineArgs);
} catch (IllegalArgumentException e) {
System.err.println(e);
System.err.println(usage);
System.exit(1);
}
(new ResponderClientCLI(args.city, args.idNum)).run();
}
private class Add implements Command {
public void exec(String[] args) {
if (args.length < 3) {
System.out.println("invalid arguments for 'add'");
} else {
add(args[0], args[1], args[2]);
}
}
}
private void add(String resourceIDStr, String resourceNameStr, String durationStr) {
ResourceID rid = ResourceID.parse(resourceIDStr);
ResourceName name = ResourceName.parse(resourceNameStr);
int duration = Integer.parseInt(durationStr);
if (duration < 0) {
throw new NumberFormatException("duration less than 0");
}
try {
client.add(rid, name, duration);
System.out.println("Successfully added resource to server.");
} catch (Exception e) {
System.out.println("Failed to add resource: "+e.getMessage());
}
}
private class Remove implements Command {
public void exec(String[] args) {
if (args.length < 2) {
System.out.println("invalid arguments for 'remove'");
} else {
remove(args[0], args[1]);
}
}
}
private void remove(String resourceIDStr, String durationStr) {
try {
ResourceID resourceID = ResourceID.parse(resourceIDStr);
int duration = Integer.parseInt(durationStr);
client.remove(resourceID, duration);
System.out.println("Successfully removed resource from server.");
} catch (NumberFormatException e) {
System.out.println("invalid duration: "+durationStr);
} catch (IllegalArgumentException e) {
System.out.println(e.getMessage());
} catch (Exception e) {
System.out.println("Failed to remove resource: "+e.getMessage());
}
}
private class List implements Command {
public void exec(String[] args) {
if (args.length < 1) {
System.out.println("invalid arguments for 'list'");
} else {
list(args[0]);
}
}
}
private void list(String resourceNameStr) {
try {
ResourceName name = ResourceName.parse(resourceNameStr);
Resource[] resources = client.listResources(name);
System.out.println("Available resources:");
for (Resource resource : resources) {
System.out.println(resource.toString());
}
} catch (IllegalArgumentException e) {
System.out.println("invalid resource name: " + resourceNameStr);
} catch (UnknownHostException | MalformedURLException e) {
System.err.println(e.getMessage());
} catch (ServerCommunicationError e) {
System.err.println("Failed to retrieve resources from server: "+e.getMessage());
}
}
private static class Args {
private final City city;
private final short idNum;
private Args(String[] args) throws IllegalArgumentException {
if (args.length < 1) {
throw new IllegalArgumentException("Missing argument 'city'");
}
city = new City(args[0]);
if (args.length < 2) {
throw new IllegalArgumentException("Missing argument 'id number'");
}
try {
idNum = Short.parseShort(args[1]);
} catch (NumberFormatException e) {
throw new IllegalArgumentException("Bad value of 'id number'");
}
}
}
}
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