Adds the ability to download old bungee versions

src/main/java/net/knarcraft/minecraftserverlauncher/server/ServerTypeHandler.java

@@ -122,7 +122,7 @@ public class ServerTypeHandler {
                 break;
             case "Bungee":
                 newType = new BungeeCord("Bungee", true, serverVersions, serverTypeInfo[2],
-                        serverTypeInfo[3], serverTypeInfo[4], serverTypeInfo[5]);
+                        serverTypeInfo[3], serverTypeInfo[4], serverTypeInfo[5], serverTypeInfo[6], serverTypeInfo[7]);
                 break;
             case "Travertine":
                 newType = new Travertine("Travertine", true, serverVersions, serverTypeInfo[2],

src/main/java/net/knarcraft/minecraftserverlauncher/server/servertypes/BungeeCord.java

@@ -18,6 +18,8 @@ public class BungeeCord extends AbstractServerType {
     private final String versionURL;
     private final String srcStart;
     private final String srcEnd;
+    private final String oldVersionsURL;
+    private final String oldVersionsPrefix;
 
     /**
      * Instantiates a new BungeeCord server type
@@ -30,18 +32,39 @@ public class BungeeCord extends AbstractServerType {
      * @param srcEnd      <p>The string marking the end of the version id</p>
      * @param downloadURL <p>The URL used for downloading the latest version</p>
      */
-    public BungeeCord(String typeName, boolean isProxy, String[] versions, String versionURL, String srcStart, String srcEnd, String downloadURL) {
+    public BungeeCord(String typeName, boolean isProxy, String[] versions, String versionURL, String srcStart,
+                      String srcEnd, String downloadURL, String oldVersionsURL, String oldVersionsPrefix) {
         super(typeName, isProxy, versions, downloadURL);
         this.versionURL = versionURL;
         this.srcStart = srcStart;
         this.srcEnd = srcEnd;
+        this.oldVersionsURL = oldVersionsURL;
+        this.oldVersionsPrefix = oldVersionsPrefix;
     }
 
     @Override
     public boolean downloadJar(String folder, String version) throws IOException {
+        String targetFile = this.getName() + version + ".jar";
+        File filePath = new File(folder + targetFile);
+
+        if (version.equals("Latest")) {
+            return downloadLatestJar(filePath);
+        } else {
+            String file = oldVersionsPrefix + version + ".jar";
+            return filePath.isFile() || downloadFile(oldVersionsURL + file, Paths.get(filePath.toURI()));
+        }
+    }
+
+    /**
+     * Downloads the latest BungeeCord .jar file
+     *
+     * @param filePath <p>The file path to download the new jar to</p>
+     * @return <p>True if the jar exists or was successfully downloaded</p>
+     * @throws IOException <p>If unable to download the new jar</p>
+     */
+    private boolean downloadLatestJar(File filePath) throws IOException {
         ServerVersionContainer versionContainer = ServerVersionContainer.getInstance();
-        String file = this.getName() + version + ".jar";
+
-        File filePath = new File(folder + file);
         String newestVersion = stringBetween(readFile(versionURL), srcStart, srcEnd);
         String oldVersion = versionContainer.getBungeeVersion();
         //The file is already the newest version
@@ -55,4 +78,5 @@ public class BungeeCord extends AbstractServerType {
         versionContainer.setBungeeVersion(newestVersion);
         return true;
     }
+
 }

src/main/resources/servertypes.csv

@@ -1,11 +1,11 @@
+Vanilla;Latest,Snapshot,1.16.2,1.15.2,1.14.4,1.13.2,1.12.2,1.11.2,1.10.2,1.9.4,1.8.9,1.7.10,1.6.4,1.5.2,1.4.7,1.3.2,1.2.5;https://launchermeta.mojang.com/mc/game/version_manifest.json;"release":";";https://s3.amazonaws.com/Minecraft.Download/versions/
 SpongeVanilla;1.12.2,1.11.2,1.10.2,1.8.9;https://dl-api.spongepowered.org/v1/org.spongepowered/spongevanilla/downloads?type=stable&minecraft=;"version":";",;https://repo.spongepowered.org/maven/org/spongepowered/spongevanilla/;/spongevanilla-
 SpongeForge;1.12.2,1.11.2,1.10.2;https://dl-api.spongepowered.org/v1/org.spongepowered/spongeforge/downloads?type=stable&minecraft=;"version":";",;https://repo.spongepowered.org/maven/org/spongepowered/spongeforge/;/spongeforge-
 Spigot;1.16.1,1.15.2,1.14.4,1.13.2,1.12.2,1.11.2,1.10.2,1.9.4,1.9.4,1.8.8,1.7.10,1.6.4-R2.1,1.5.2-R1.1,1.4.7-R1.1;https://static.knarcraft.net/archive/downloads/minecraftserverjars/Spigot/;spigot-
 MCPCplus;1.6.4,1.6.2,1.5.2,1.4.7;https://static.knarcraft.net/archive/downloads/minecraftserverjars/MCPC+/;mcpcplus
 Craftbukkit;1.13.2,1.12.2,1.11.2,1.10.2,1.9.4,1.8.8,1.7.10-R0.1,1.6.4-R2.0,1.5.2-R1.0,1.4.6-R0.3,1.3.2-R3.0,1.2.5-R2.0,1.1-R6,1.0.1-R1,b1.8.1,b1.7.3;https://static.knarcraft.net/archive/downloads/minecraftserverjars/Bukkit/;craftbukkit-
 Paper;1.16.1,1.15.2,1.14.4,1.13.2,1.12.2,1.11.2,1.10.2,1.9.4,1.8.8;https://static.knarcraft.net/archive/downloads/minecraftserverjars/Paper/;Paper-
-Bungee;Latest;https://ci.md-5.net/job/BungeeCord/lastSuccessfulBuild/artifact/bootstrap/target/;Artifacts of BungeeCord #; ;http://ci.md-5.net/job/BungeeCord/lastSuccessfulBuild/artifact/bootstrap/target/BungeeCord.jar
+Bungee;Latest,1.7.10,1.6.4,1.5.2,1.4.7;https://ci.md-5.net/job/BungeeCord/lastSuccessfulBuild/artifact/bootstrap/target/;Artifacts of BungeeCord #; ;http://ci.md-5.net/job/BungeeCord/lastSuccessfulBuild/artifact/bootstrap/target/BungeeCord.jar;https://static.knarcraft.net/archive/downloads/minecraftserverjars/BungeeCord/;BungeeCord-
 Waterfall;Latest;https://papermc.io/api/v1/waterfall/1.16;"latest":";";https://papermc.io/api/v1/waterfall/1.16/
 Travertine;Latest;https://papermc.io/api/v1/travertine/1.16;"latest":";";https://papermc.io/api/v1/travertine/1.16/
-Vanilla;Latest,Snapshot,1.16.2,1.15.2,1.14.4,1.13.2,1.12.2,1.11.2,1.10.2,1.9.4,1.8.9,1.7.10,1.6.4,1.5.2,1.4.7,1.3.2,1.2.5;https://launchermeta.mojang.com/mc/game/version_manifest.json;"release":";";https://s3.amazonaws.com/Minecraft.Download/versions/
 Custom;;