public class RandomSpawnManager {

    private final RandomSpawn plugin;
    private final Logger logger;
    private final Random random;
    private final HashMap<UUID, List<Location<World>>> spawns;
    private int min, max;

    RandomSpawnManager(RandomSpawn plugin) {
        this.plugin = plugin;
        this.logger = plugin.getLogger();
        this.random = new Random();
        this.spawns = new HashMap<>();
    }

    void init(ConfigurationLoader<CommentedConfigurationNode> localLoader) {
        try {
            ConfigurationOptions options = ConfigurationOptions.defaults()
                    .setShouldCopyDefaults(true);
            CommentedConfigurationNode node = localLoader.load(options);
            this.min = (int) node.getNode("spawnArea", "min").getValue(1500);
            this.max = (int) node.getNode("spawnArea", "max").getValue(3000);
            localLoader.save(node);
        } catch (IOException e) {
            this.logger.warn("Error saving default config!", e);
        }
    }

    public void generationSpawnLocations(Player p) {
        List<Location<World>> locs = new ArrayList<>();

        for (int i = 0; i < 3; i++) {
            Location<World> loc = this.getRandomLocation(p.getWorld());
            locs.add(loc);
            this.logger.info("loc: " + loc.getBlockX() + ", " + loc.getBlockY() + ", " + loc.getBlockZ());
        }

        this.spawns.put(p.getUniqueId(), locs);
        this.toSafeLocation(p, locs.get(0));
    }

    public void toSpawn(Player p, int index) {
        this.logger.info("p: " + p.getName() + ", index: " + index);
        this.toSafeLocation(p, this.spawns.get(p.getUniqueId()).get(index));
    }

    private Location<World> getRandomLocation(World world) {
        int x = this.random.nextBoolean() ? this.random.nextInt(max + 1 - min) + min : -(this.random.nextInt(max + 1 - min) + min);
        int z = this.random.nextBoolean() ? this.random.nextInt(max + 1 - min) + min : -(this.random.nextInt(max + 1 - min) + min);
        return new Location<>(world, x, 90, z);
    }

    private void toSafeLocation(Player p, Location<World> location) {
        Optional<Location<World>> sf = Sponge.getTeleportHelper().getSafeLocation(location);
        sf.ifPresent(worldLocation -> this.logger.info("p.setLocation(loc): " + p.setLocation(worldLocation)));
    }

    public Map<UUID, List<Location<World>>> getSpawns() {
        return this.spawns;
    }
}