Minstrel/src/main/java/net/knarcraft/minstrel/command/MinstrelCommand.java

package net.knarcraft.minstrel.command;

import net.citizensnpcs.api.CitizensAPI;
import net.citizensnpcs.api.npc.NPC;
import net.knarcraft.minstrel.trait.MinstrelTrait;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 * The main command, delegating sub-commands
 */
public class MinstrelCommand implements CommandExecutor {

    @Override
    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label,
                             @NotNull String[] args) {
        NPC npc = CitizensAPI.getDefaultNPCSelector().getSelected(sender);
        if (npc == null || !npc.hasTrait(MinstrelTrait.class)) {
            sender.sendMessage("You must select a minstrel NPC before running this command");
            return true;
        }
        MinstrelTrait minstrelTrait = npc.getTraitNullable(MinstrelTrait.class);

        if (args.length < 1) {
            return false;
        }

        return switch (args[0].toLowerCase()) {
            case "addsong" -> new AddSongCommand(minstrelTrait).onCommand(sender, command, label, args);
            case "removesong" -> new RemoveSongCommand(minstrelTrait).onCommand(sender, command, label, args);
            case "listsongs" -> new ListSongsCommand(minstrelTrait).onCommand(sender, command, label, args);
            case "pitch" -> updatePitch(minstrelTrait, args.length > 1 ? args[1] : null, args.length > 2 &&
                    Boolean.parseBoolean(args[2]), sender);
            case "volume" -> updateVolume(minstrelTrait, args.length > 1 ? args[1] : null, args.length > 2 &&
                    Boolean.parseBoolean(args[2]), sender);
            default -> false;
        
        /* Sub-commands:
            AddSong category identifier duration (remember to run play again)
            RemoveSong index
            ListSongs
            
          Global sub-commands
            StopAll - Stops all minstrels from playing
            PlayALl - Starts playing for all minstrels
            
            //TODO: Perhaps split this into two plugins instead? Or make this a generic plugin which happens to add a Minstrel trait?
            CreatePlaylist name
            AddSong playlist category identifier duration
            Play playlist - Plays the specified playlist at the executor's location
         */
        };

    }

    /**
     * Updates the pitch for a minstrel if possible
     *
     * @param minstrelTrait <p>The minstrel to update the pitch for</p>
     * @param newPitch      <p>The new pitch for the minstrel, or null to display the current pitch</p>
     * @param sender        <p>The sender to send error/success messages to</p>
     * @return <p>True if the pitch was successfully updated</p>
     */
    private boolean updatePitch(@NotNull MinstrelTrait minstrelTrait, @Nullable String newPitch, boolean forceRefresh,
                                @NotNull CommandSender sender) {
        if (newPitch == null) {
            sender.sendMessage("Current pitch: " + minstrelTrait.getPitch());
            return true;
        }

        try {
            float pitch = Float.parseFloat(newPitch);
            if (pitch < 0) {
                sender.sendMessage("The pitch cannot be negative");
            } else {
                minstrelTrait.setPitch(pitch);
                if (forceRefresh && sender instanceof Player player) {
                    minstrelTrait.getPlaylist().stop(player);
                    minstrelTrait.getPlaylist().play(minstrelTrait, player);
                }
            }
        } catch (NumberFormatException exception) {
            sender.sendMessage("The given pitch is not a number!");
            return false;
        }
        sender.sendMessage("Pitch set to " + newPitch);
        return true;
    }

    /**
     * Updates the volume for a minstrel if possible
     *
     * @param minstrelTrait <p>The minstrel to update the pitch for</p>
     * @param newVolume     <p>The new volume for the minstrel</p>
     * @param sender        <p>The sender to send error/success messages to</p>
     * @return <p>True if the volume was successfully updated</p>
     */
    private boolean updateVolume(MinstrelTrait minstrelTrait, String newVolume, boolean forceRefresh, CommandSender sender) {
        if (newVolume == null) {
            sender.sendMessage("Current volume: " + minstrelTrait.getVolume());
            return true;
        }

        try {
            float volume = Float.parseFloat(newVolume);
            if (volume <= 0) {
                sender.sendMessage("The volume must be greater than 0");
            } else {
                minstrelTrait.setVolume(volume);
                if (forceRefresh && sender instanceof Player player) {
                    minstrelTrait.getPlaylist().stop(player);
                    minstrelTrait.getPlaylist().play(minstrelTrait, player);
                }
            }
        } catch (NumberFormatException exception) {
            sender.sendMessage("The given volume is not a number!");
            return false;
        }
        sender.sendMessage("Volume set to " + newVolume);
        return true;
    }

}