erik/mobibot
erik/mobibot
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Erik C. Thauvin 2020-03-30 15:39:55 -07:00
parent 89eac6b025
commit 0fda50b4e1
1 changed files with 97 additions and 91 deletions
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src/main/java/net/thauvin/erik/mobibot/modules/CurrencyConverter.java
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@ -38,7 +38,6 @@ import net.thauvin.erik.mobibot.Mobibot;
import net.thauvin.erik.mobibot.Utils; import net.thauvin.erik.mobibot.Utils;
import net.thauvin.erik.mobibot.msg.ErrorMessage; import net.thauvin.erik.mobibot.msg.ErrorMessage;
import net.thauvin.erik.mobibot.msg.Message; import net.thauvin.erik.mobibot.msg.Message;
import net.thauvin.erik.mobibot.msg.NoticeMessage;
import net.thauvin.erik.mobibot.msg.PublicMessage; import net.thauvin.erik.mobibot.msg.PublicMessage;
import org.apache.commons.lang3.StringUtils; import org.apache.commons.lang3.StringUtils;
import org.jdom2.Document; import org.jdom2.Document;
@ -51,13 +50,11 @@ import javax.xml.XMLConstants;
import java.io.IOException; import java.io.IOException;
import java.net.URL; import java.net.URL;
import java.text.NumberFormat; import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.List; import java.util.List;
import java.util.Locale;
import java.util.Map; import java.util.Map;
import java.util.TreeMap; import java.util.TreeMap;
import static net.thauvin.erik.mobibot.Utils.bold;
/** /**
* The CurrentConverter module. * The CurrentConverter module.
* *
@ -67,13 +64,12 @@ import static net.thauvin.erik.mobibot.Utils.bold;
*/ */
@SuppressWarnings("PMD.UseConcurrentHashMap") @SuppressWarnings("PMD.UseConcurrentHashMap")
public final class CurrencyConverter extends ThreadedModule { public final class CurrencyConverter extends ThreadedModule {
/**
* The rates keyword.
*/
static final String CURRENCY_RATES_KEYWORD = "rates";
// Currency command // Currency command
private static final String CURRENCY_CMD = "currency"; private static final String CURRENCY_CMD = "currency";
// Rates keyword
private static final String CURRENCY_RATES_KEYWORD = "rates";
// Empty rate table.
private static final String EMPTY_RATE_TABLE = "Sorry, but the exchange rate table is empty.";
// Exchange rates // Exchange rates
private static final Map<String, String> EXCHANGE_RATES = new TreeMap<>(); private static final Map<String, String> EXCHANGE_RATES = new TreeMap<>();
// Exchange rates table URL // Exchange rates table URL
@ -96,9 +92,54 @@ public final class CurrencyConverter extends ThreadedModule {
* *
* @param query The query. * @param query The query.
* @return The {@link Message} contained the converted currency. * @return The {@link Message} contained the converted currency.
* @throws ModuleException If an error occurs while converting.
*/ */
static Message convertCurrency(final String query) throws ModuleException { static Message convertCurrency(final String query) {
final String[] cmds = query.split(" ");
if (cmds.length == 4) {
if (cmds[3].equals(cmds[1]) || "0".equals(cmds[0])) {
return new PublicMessage("You're kidding, right?");
} else {
final String to = cmds[1].toUpperCase(Constants.LOCALE);
final String from = cmds[3].toUpperCase(Constants.LOCALE);
if (EXCHANGE_RATES.containsKey(to) && EXCHANGE_RATES.containsKey(from)) {
try {
final double amt = Double.parseDouble(cmds[0].replace(",", ""));
final double doubleFrom = Double.parseDouble(EXCHANGE_RATES.get(to));
final double doubleTo = Double.parseDouble(EXCHANGE_RATES.get(from));
return new PublicMessage(
NumberFormat.getCurrencyInstance(Constants.LOCALE).format(amt).substring(1)
+ ' '
+ cmds[1].toUpperCase(Constants.LOCALE)
+ " = "
+ NumberFormat.getCurrencyInstance(Constants.LOCALE)
.format((amt * doubleTo) / doubleFrom)
.substring(1)
+ ' '
+ cmds[3].toUpperCase(Constants.LOCALE));
} catch (NumberFormatException e) {
return new ErrorMessage("Let's try with some real numbers next time, okay?");
}
} else {
return new ErrorMessage("Sounds like monopoly money to me!");
}
}
}
return new ErrorMessage("Invalid query. Let's try again.");
}
static List<String> currencyRates() {
final List<String> rates = new ArrayList<>(33);
for (final Map.Entry<String, String> rate : EXCHANGE_RATES.entrySet()) {
rates.add(" " + rate.getKey() + ": " + StringUtils.leftPad(rate.getValue(), 8));
}
return rates;
}
static void loadRates() throws ModuleException {
if (EXCHANGE_RATES.isEmpty()) { if (EXCHANGE_RATES.isEmpty()) {
try { try {
final SAXBuilder builder = new SAXBuilder(); final SAXBuilder builder = new SAXBuilder();
@ -116,71 +157,20 @@ public final class CurrencyConverter extends ThreadedModule {
pubDate = cubeTime.getAttribute("time").getValue(); pubDate = cubeTime.getAttribute("time").getValue();
final List<Element> cubes = cubeTime.getChildren(); final List<Element> cubes = cubeTime.getChildren();
Element cube;
for (final Element rawCube : cubes) { for (final Element cube : cubes) {
cube = rawCube;
EXCHANGE_RATES.put( EXCHANGE_RATES.put(
cube.getAttribute("currency").getValue(), cube.getAttribute("currency").getValue(),
cube.getAttribute("rate").getValue()); cube.getAttribute("rate").getValue());
} }
EXCHANGE_RATES.put("EUR", "1"); EXCHANGE_RATES.put("EUR", "1");
} catch (JDOMException e) { } catch (JDOMException | IOException e) {
throw new ModuleException(query, "An error has occurred while parsing the exchange rates table.", e); throw new ModuleException(e.getMessage(),
} catch (IOException e) { "An error has occurred while parsing the exchange rates table.",
throw new ModuleException( e);
query, "An error has occurred while fetching the exchange rates table.", e);
} }
} }
if (EXCHANGE_RATES.isEmpty()) {
return new ErrorMessage("Sorry, but the exchange rate table is empty.");
} else {
final String[] cmds = query.split(" ");
if (cmds.length == 4) {
if (cmds[3].equals(cmds[1]) || "0".equals(cmds[0])) {
return new ErrorMessage("You're kidding, right?");
} else {
try {
final double amt = Double.parseDouble(cmds[0].replace(",", ""));
final double from =
Double.parseDouble(EXCHANGE_RATES.get(cmds[1].toUpperCase(Constants.LOCALE)));
final double to = Double.parseDouble(EXCHANGE_RATES.get(cmds[3].toUpperCase(Constants.LOCALE)));
return new PublicMessage(
NumberFormat.getCurrencyInstance(Locale.US).format(amt).substring(1)
+ ' '
+ cmds[1].toUpperCase(Constants.LOCALE)
+ " = "
+ NumberFormat.getCurrencyInstance(Locale.US)
.format((amt * to) / from)
.substring(1)
+ ' '
+ cmds[3].toUpperCase(Constants.LOCALE));
} catch (Exception e) {
throw new ModuleException("convertCurrency(" + query + ')',
"The supported currencies are: " + EXCHANGE_RATES.keySet(), e);
}
}
} else if (CURRENCY_RATES_KEYWORD.equals(query)) {
final StringBuilder buff = new StringBuilder().append('[').append(pubDate).append("]: ");
int i = 0;
for (final Map.Entry<String, String> rate : EXCHANGE_RATES.entrySet()) {
if (i > 0) {
buff.append(", ");
}
buff.append(rate.getKey()).append(": ").append(rate.getValue());
i++;
}
return new NoticeMessage(buff.toString());
}
}
return new ErrorMessage("The supported currencies are: " + EXCHANGE_RATES.keySet());
} }
/** /**
@ -206,22 +196,28 @@ public final class CurrencyConverter extends ThreadedModule {
*/ */
@SuppressFBWarnings("REDOS") @SuppressFBWarnings("REDOS")
@Override @Override
void run(final Mobibot bot, final String sender, final String cmd, final String query) { void run(final Mobibot bot, final String sender, final String cmd, final String query, final boolean isPrivate) {
if (StringUtils.isNotBlank(sender) && StringUtils.isNotBlank(query)) { if (EXCHANGE_RATES.isEmpty()) {
if (query.matches("\\d+([,\\d]+)?(\\.\\d+)? [a-zA-Z]{3}+ to [a-zA-Z]{3}+")) {
try { try {
final Message msg = convertCurrency(query); loadRates();
if (msg.isError()) {
helpResponse(bot, sender, CURRENCY_CMD + ' ' + query, false);
}
bot.send(sender, msg);
} catch (ModuleException e) { } catch (ModuleException e) {
bot.getLogger().warn(e.getDebugMessage(), e); bot.getLogger().warn(e.getDebugMessage(), e);
bot.send(sender, e.getMessage());
} }
}
if (EXCHANGE_RATES.isEmpty()) {
bot.send(sender, EMPTY_RATE_TABLE, true);
} else if (query.matches("\\d+([,\\d]+)?(\\.\\d+)? [a-zA-Z]{3}+ to [a-zA-Z]{3}+")) {
final Message msg = convertCurrency(query);
bot.send(sender, msg);
if (msg.isError()) {
helpResponse(bot, sender, isPrivate);
}
} else if (query.contains(CURRENCY_RATES_KEYWORD)) {
bot.send(sender, "The currency rates for " + Utils.bold(pubDate) + " are:", isPrivate);
bot.sendCommandsList(sender, currencyRates(), 3, isPrivate, false);
} else { } else {
helpResponse(bot, sender, CURRENCY_CMD + ' ' + query, true); helpResponse(bot, sender, isPrivate);
}
} }
} }
@ -229,15 +225,25 @@ public final class CurrencyConverter extends ThreadedModule {
* {@inheritDoc} * {@inheritDoc}
*/ */
@Override @Override
public void helpResponse(final Mobibot bot, final String sender, final String args, final boolean isPrivate) { public void helpResponse(final Mobibot bot, final String sender, final boolean isPrivate) {
bot.send(sender, bold("To convert from one currency to another:")); if (EXCHANGE_RATES.isEmpty()) {
bot.send(sender, Utils.helpIndent(bot.getNick() + ": " + CURRENCY_CMD + " [100 USD to EUR]")); try {
loadRates();
if (args.endsWith(CURRENCY_CMD)) { } catch (ModuleException e) {
bot.send(sender, bold("For a listing of currency rates:")); bot.getLogger().debug(e.getDebugMessage(), e);
bot.send(sender, Utils.helpIndent(bot.getNick() + ": " + CURRENCY_CMD) + ' ' + CURRENCY_RATES_KEYWORD); }
bot.send(sender, bold("For a listing of supported currencies:")); }
bot.send(sender, Utils.helpIndent(bot.getNick() + ": " + CURRENCY_CMD)); if (EXCHANGE_RATES.isEmpty()) {
bot.send(sender, EMPTY_RATE_TABLE, isPrivate);
} else {
bot.send(sender, "To convert from one currency to another:", isPrivate);
bot.send(sender, Utils.helpIndent(bot.getNick() + ": " + CURRENCY_CMD + " 100 USD to EUR"), isPrivate);
bot.send(sender, "For a listing of current rates:", isPrivate);
bot.send(sender,
Utils.helpIndent(bot.getNick() + ": " + CURRENCY_CMD) + ' ' + CURRENCY_RATES_KEYWORD,
isPrivate);
bot.send(sender, "The supported currencies are: ", isPrivate);
bot.sendCommandsList(sender, new ArrayList<>(EXCHANGE_RATES.keySet()), 11, isPrivate, false);
} }
} }
} }