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package com.earth2me.essentials.update;
import java.io.File;
import java.util.Map;
import java.util.Map.Entry;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.bukkit.Bukkit;
import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.PluginManager;
public class UpdateCheck
{
private transient CheckResult result = CheckResult.UNKNOWN;
private transient Version currentVersion;
private transient Version newVersion = null;
private transient int bukkitResult = 0;
private transient UpdateFile updateFile;
private final static int CHECK_INTERVAL = 20 * 60 * 60 * 6;
private final transient Plugin plugin;
private transient boolean essentialsInstalled;
public UpdateCheck(final Plugin plugin)
{
this.plugin = plugin;
updateFile = new UpdateFile(plugin);
checkForEssentials();
}
private void checkForEssentials()
{
final PluginManager pluginManager = plugin.getServer().getPluginManager();
final Plugin essentials = pluginManager.getPlugin("Essentials");
essentialsInstalled = essentials != null;
if (essentialsInstalled)
{
currentVersion = new Version(essentials.getDescription().getVersion());
}
else
{
if (new File(plugin.getDataFolder().getParentFile(), "Essentials.jar").exists())
{
Bukkit.getLogger().severe("Essentials.jar found, but not recognized by Bukkit. Broken download?");
}
}
}
public void scheduleUpdateTask()
{
plugin.getServer().getScheduler().scheduleAsyncRepeatingTask(plugin, new Runnable()
{
@Override
public void run()
{
updateFile = new UpdateFile(plugin);
checkForUpdates();
}
}, CHECK_INTERVAL, CHECK_INTERVAL);
}
public boolean isEssentialsInstalled()
{
return essentialsInstalled;
}
public CheckResult getResult()
{
return result;
}
public int getNewBukkitVersion()
{
return bukkitResult;
}
public VersionInfo getNewVersionInfo()
{
return updateFile.getVersions().get(newVersion);
}
public enum CheckResult
{
NEW_ESS, NEW_ESS_BUKKIT, NEW_BUKKIT, OK, UNKNOWN
}
public void checkForUpdates()
{
if (currentVersion == null)
{
return;
}
final Map<Version, VersionInfo> versions = updateFile.getVersions();
final int bukkitVersion = getBukkitVersion();
Version higher = null;
Version found = null;
Version lower = null;
int bukkitHigher = 0;
int bukkitLower = 0;
for (Entry<Version, VersionInfo> entry : versions.entrySet())
{
final int minBukkit = entry.getValue().getMinBukkit();
final int maxBukkit = entry.getValue().getMaxBukkit();
if (minBukkit == 0 || maxBukkit == 0)
{
continue;
}
if (bukkitVersion <= maxBukkit)
{
if (bukkitVersion < minBukkit)
{
if (higher == null || higher.compareTo(entry.getKey()) < 0)
{
higher = entry.getKey();
bukkitHigher = minBukkit;
}
}
else
{
if (found == null || found.compareTo(entry.getKey()) < 0)
{
found = entry.getKey();
}
}
}
else
{
if (lower == null || lower.compareTo(entry.getKey()) < 0)
{
lower = entry.getKey();
bukkitLower = minBukkit;
}
}
}
if (found != null)
{
if (found.compareTo(currentVersion) > 0)
{
result = CheckResult.NEW_ESS;
newVersion = found;
}
else
{
result = CheckResult.OK;
}
}
else if (higher != null)
{
if (higher.compareTo(currentVersion) > 0)
{
newVersion = higher;
result = CheckResult.NEW_ESS_BUKKIT;
bukkitResult = bukkitHigher;
}
else if (higher.compareTo(currentVersion) < 0)
{
result = CheckResult.UNKNOWN;
}
else
{
result = CheckResult.NEW_BUKKIT;
bukkitResult = bukkitHigher;
}
}
else if (lower != null)
{
if (lower.compareTo(currentVersion) > 0)
{
result = CheckResult.NEW_ESS_BUKKIT;
newVersion = lower;
bukkitResult = bukkitLower;
}
else if (lower.compareTo(currentVersion) < 0)
{
result = CheckResult.UNKNOWN;
}
else
{
result = CheckResult.NEW_BUKKIT;
bukkitResult = bukkitLower;
}
}
}
private int getBukkitVersion()
{
final Matcher versionMatch = Pattern.compile("git-Bukkit-([0-9]+).([0-9]+).([0-9]+)-[0-9]+-[0-9a-z]+-b([0-9]+)jnks.*").matcher(plugin.getServer().getVersion());
if (versionMatch.matches())
{
return Integer.parseInt(versionMatch.group(4));
}
throw new NumberFormatException("Bukkit Version changed!");
}
public Version getNewVersion()
{
return newVersion;
}
}
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