package lostcave.deathchests.util;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.List;

import cpw.mods.fml.common.FMLCommonHandler;

public class Config {

    public static final String config_file_name = "deathchests.txt";
    public static File configDir = null;

    public static boolean debug = true;
    public static boolean fixLog4J = true;
    public static int maxDistance = 50;
    public static boolean allowOtherPlayers = true;
    public static String notAllowedMessage = "§4Cannot get items from another player's death chest.";

    private static final String config_header = "# The format of this file is strictly `option=value` (no spaces).\n# Lines starting with # and empty lines are ignored.";

    public static void writeConfig() {
        String configOut = config_header;
        configOut += "\n\n# Enable debug output?\n";
        configOut += "debug=";
        configOut += debug ? "true" : "false";
        configOut += "\n\n# Enable Log4Shell counter measures? (this feature is currently not implemented)\n";
        configOut += "fixLog4J=";
        configOut += fixLog4J ? "true" : "false";
        configOut += "\n\n# The maximum search radius for finding a suitable location for placing the death chest\n";
        configOut += "maxDistance=";
        configOut += Integer.toString(maxDistance);
        configOut += "\n\n# Allow players other than the owner to get the items?\n";
        configOut += "allowOtherPlayers=";
        configOut += allowOtherPlayers ? "true" : "false";
        configOut += "\n\n# The message to display when trying to get items from another player's death chest and allowOtherPlayers=false";
        configOut += "notAllowedMessage=";
        configOut += notAllowedMessage;
    
        File configFile = new File(configDir, config_file_name);
        try {
            Files.write(configFile.toPath(), configOut.getBytes());
        } catch (IOException e) {
            System.err.println("Failed to write to file at " + configFile.toString() + ":");
            e.printStackTrace();
            System.err.println("Proceeding as if nothing happened...");
        }
    }

    public static void loadConfig() {
        List<String> configData = null;
        File configFile = new File(configDir, config_file_name);
        if (configFile.exists()) {
            try {
                configData = Files.readAllLines(configFile.toPath());
                for (int i = 0; i < configData.size(); i++) {
                    if (configData.get(i).length() != 0 && configData.get(i).charAt(0) != '#') {
                        int equalsSign = configData.get(i).indexOf('=');
                        switch (configData.get(i).substring(0, equalsSign)) {
                            case ("debug"): {
                                debug = configData.get(i).substring(equalsSign + 1).equals("true") ? true : false;
                                break;
                            }
                            case ("fixLog4J"): {
                                fixLog4J = configData.get(i).substring(equalsSign + 1).equals("true") ? true : false;
                                break;
                            }
                            case ("maxDistance"): {
                                maxDistance = Integer.parseInt(configData.get(i).substring(equalsSign + 1));
                                break;
                            }
                            case ("allowOtherPlayers"): {
                                allowOtherPlayers = configData.get(i).substring(equalsSign + 1).equals("true") ? true : false;
                                break;
                            }
                            case ("notAllowedMessage"): {
                                notAllowedMessage = configData.get(i).substring(equalsSign+1);
                                break;
                            }
                            default: {
                                System.err.println("Failed parsing config entry: " + configData.get(i));
                                FMLCommonHandler.instance().exitJava(1, false);
                            }
                        }
                    }
                }
            } catch (IOException e) {
                System.err.println("An error was encountered while trying to read the file at " + configFile.toString() + ":");
                e.printStackTrace();
                System.err.println("Proceeding with default configuration...");
            }
        } else {
            // Skip reading config and set up initial config file with default values
            writeConfig();
        }
    }
}