Refactored how commands are handled

src/main/java/net/locusworks/discord/eighttrack/events/AbstractEvent.java

@@ -0,0 +1,80 @@
+package net.locusworks.discord.eighttrack.events;
+
+import java.util.List;
+import net.dv8tion.jda.api.Permission;
+import net.dv8tion.jda.api.entities.Message;
+import net.dv8tion.jda.api.events.message.guild.GuildMessageReceivedEvent;
+import net.dv8tion.jda.api.exceptions.ErrorResponseException;
+import net.dv8tion.jda.api.requests.ErrorResponse;
+import net.locusworks.discord.eighttrack.handlers.GuildMusicHandler;
+import net.locusworks.discord.eighttrack.handlers.ReactionHandler;
+
+public abstract class AbstractEvent {
+  
+  private String command;
+
+  protected AbstractEvent(String command) {
+    this.command = command;
+  }
+  
+  public String getCommand() {
+    return this.command;
+  }
+  
+  public abstract void executeEvent(GuildMusicHandler musicHandler, GuildMessageReceivedEvent event, List<String> commands);
+  
+  
+  public abstract String help();
+  
+  protected boolean isAdmin(GuildMessageReceivedEvent event) {
+    if (!event.getMessage().getMember().hasPermission(Permission.ADMINISTRATOR, Permission.MANAGE_SERVER)) {
+      event.getChannel().sendMessage(String.format("Sorry <@%s> i can't do that. *psst: you have to have manage server, or administrator role*", event.getMember().getIdLong())).queue();
+      return false;
+    }
+    return true;
+  }
+
+  protected boolean checkCommands(GuildMessageReceivedEvent event, List<String> commands, String msg) {
+    return checkCommands(event, commands, 0, msg);
+  }
+
+  protected boolean checkCommands(GuildMessageReceivedEvent event, List<String> commands, int minParams, String msg) {
+    if (commands == null || commands.isEmpty() || commands.size() < minParams) {
+      event.getChannel().sendMessage(msg).queue();
+      return false;
+    }
+    return true;
+  }
+
+  protected void sendMessage(GuildMessageReceivedEvent event, String msg) {
+    sendMessage(event, msg, false);
+  }
+  
+  protected void sendMessage(GuildMessageReceivedEvent event, String msg, boolean wait) {
+    if (!wait) {
+      event.getChannel().sendMessage(msg).queue();
+    } else {
+      event.getChannel().sendMessage(msg).complete();
+    }
+  }
+  
+  protected void sendMessage(GuildMessageReceivedEvent event, String msgFmt, Object... args) {
+    sendMessage(event, String.format(msgFmt, args));
+  }
+  
+  protected void sendMessage(GuildMessageReceivedEvent event, boolean wait, String msgFmt, Object... args) {
+    sendMessage(event, String.format(msgFmt, args), wait);
+  }
+
+  protected void deleteMessage(Message msg, ReactionHandler reactionHandler, Long guildId) {
+    try {
+      msg.delete().complete();
+      if (reactionHandler != null) {
+        reactionHandler.removeReactionListener(guildId, msg.getIdLong());
+      }
+    } catch (ErrorResponseException ex) {
+      if (ex.getErrorResponse() != ErrorResponse.UNKNOWN_MESSAGE) throw ex;
+    }
+  }
+
+}