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package org.anjocaido.groupmanager;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;

import org.anjocaido.groupmanager.utils.Tasks;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.SafeConstructor;
import org.yaml.snakeyaml.reader.UnicodeReader;

/**
 *
 * @author gabrielcouto
 */
public class GMConfiguration {
    private boolean allowCommandBlocks = false;
    private boolean opOverride = true;
    private boolean toggleValidate = true;
    private Integer saveInterval = 10;
    private Integer backupDuration = 24;
    private String loggerLevel = "OFF";
    private Map<String, Object> mirrorsMap;
    private final GroupManager plugin;
    private Map<String, Object> GMconfig;

    public GMConfiguration(final GroupManager plugin) {
        this.plugin = plugin;
        /*
         * Set defaults
         */
        allowCommandBlocks = false;
        opOverride = true;
        toggleValidate = true;
        saveInterval = 10;
        backupDuration = 24;
        loggerLevel = "OFF";
        load();
    }

    public void adjustLoggerLevel() {
        try {
            GroupManager.logger.setLevel(Level.parse(loggerLevel));
            return;
        } catch (final Exception e) {
        }
        GroupManager.logger.setLevel(Level.INFO);
    }

    public Integer getBackupDuration() {
        return backupDuration;
    }

    public Map<String, Object> getMirrorsMap() {
        if (!mirrorsMap.isEmpty()) {
            return mirrorsMap;
        }
        return null;
    }

    public Integer getSaveInterval() {
        return saveInterval;
    }

    public boolean isAllowCommandBlocks() {
        return allowCommandBlocks;
    }

    public boolean isOpOverride() {
        return opOverride;
    }

    public boolean isToggleValidate() {
        return toggleValidate;
    }

    @SuppressWarnings("unchecked")
    public void load() {
        if (!plugin.getDataFolder().exists()) {
            plugin.getDataFolder().mkdirs();
        }
        final File configFile = new File(plugin.getDataFolder(), "config.yml");
        if (!configFile.exists()) {
            try {
                Tasks.copy(plugin.getResourceAsStream("config.yml"), configFile);
            } catch (final IOException ex) {
                GroupManager.logger.log(Level.SEVERE, "Error creating a new config.yml", ex);
            }
        }
        final Yaml configYAML = new Yaml(new SafeConstructor());
        try {
            final FileInputStream configInputStream = new FileInputStream(configFile);
            GMconfig = (Map<String, Object>) configYAML.load(new UnicodeReader(configInputStream));
            configInputStream.close();
        } catch (final Exception ex) {
            throw new IllegalArgumentException("The following file couldn't pass on Parser.\n" + configFile.getPath(), ex);
        }
        /*
         * Read our config settings and store them for reading later.
         */
        try {
            final Map<String, Object> config = getElement("config", getElement("settings", GMconfig));
            try {
                allowCommandBlocks = (Boolean) config.get("allow_commandblocks");
            } catch (final Exception ex) {
                GroupManager.logger.log(Level.SEVERE, "Missing or corrupt 'allow_commandblocks' node. Using default settings", ex);
            }
            try {
                opOverride = (Boolean) config.get("opOverrides");
            } catch (final Exception ex) {
                GroupManager.logger.log(Level.SEVERE, "Missing or corrupt 'opOverrides' node. Using default settings", ex);
            }
            try {
                toggleValidate = (Boolean) config.get("validate_toggle");
            } catch (final Exception ex) {
                GroupManager.logger.log(Level.SEVERE, "Missing or corrupt 'validate_toggle' node. Using default settings", ex);
            }
            /*
             * data node for save/backup timers.
             */
            try {
                final Map<String, Object> save = getElement("save", getElement("data", getElement("settings", GMconfig)));
                try {
                    saveInterval = (Integer) save.get("minutes");
                } catch (final Exception ex) {
                    GroupManager.logger.log(Level.SEVERE, "Missing or corrupt 'minutes' node. Using default setting", ex);
                }
                try {
                    backupDuration = (Integer) save.get("hours");
                } catch (final Exception ex) {
                    GroupManager.logger.log(Level.SEVERE, "Missing or corrupt 'hours' node. Using default setting", ex);
                }
            } catch (final Exception ex) {
                GroupManager.logger.log(Level.SEVERE, "Missing or corrupt 'data' node. Using default settings", ex);
            }
            final Object level = ((Map<String, String>) getElement("settings", GMconfig).get("logging")).get("level");
            if (level instanceof String)
                loggerLevel = (String) level;
            /*
             * Store our mirrors map for parsing later.
             */
            mirrorsMap = (Map<String, Object>) ((Map<String, Object>) GMconfig.get("settings")).get("mirrors");
            if (mirrorsMap == null)
                throw new Exception();
        } catch (final Exception ex) {
            /*
             * Flag the error and use defaults
             */
            GroupManager.logger.log(Level.SEVERE, "There are errors in your config.yml. Using default settings", ex);
            mirrorsMap = new HashMap<String, Object>();
        }
        // Setup defaults
        adjustLoggerLevel();
        plugin.setValidateOnlinePlayer(isToggleValidate());
    }

    @SuppressWarnings("unchecked")
    private Map<String, Object> getElement(final String element, final Map<String, Object> map) {
        if (!map.containsKey(element)) {
            throw new IllegalArgumentException("The config.yml has no '" + element + ".\n");
        }
        return (Map<String, Object>) map.get(element);
    }
}