/*
 * This file is part of LuckPerms, licensed under the MIT License.
 *
 *  Copyright (c) lucko (Luck) <luck@lucko.me>
 *  Copyright (c) contributors
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in all
 *  copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *  SOFTWARE.
 */

package me.lucko.luckperms.common.config.generic.adapter;

import me.lucko.luckperms.common.config.ConfigKeys;
import me.lucko.luckperms.common.plugin.LuckPermsPlugin;
import org.checkerframework.checker.nullness.qual.Nullable;

import java.util.Locale;

public class EnvironmentVariableConfigAdapter extends StringBasedConfigurationAdapter {
    private static final String PREFIX = "LUCKPERMS_";

    private final LuckPermsPlugin plugin;

    public EnvironmentVariableConfigAdapter(LuckPermsPlugin plugin) {
        this.plugin = plugin;
    }

    @Override
    protected @Nullable String resolveValue(String path) {
        // e.g.
        // 'server'            -> LUCKPERMS_SERVER
        // 'data.table_prefix' -> LUCKPERMS_DATA_TABLE_PREFIX
        String key = PREFIX + path.toUpperCase(Locale.ROOT)
                .replace('-', '_')
                .replace('.', '_');

        String value = System.getenv(key);
        if (value != null) {
            String printableValue = ConfigKeys.shouldCensorValue(path) ? "*****" : value;
            this.plugin.getLogger().info(String.format("Resolved configuration value from environment variable: %s = %s", key, printableValue));
        }
        return value;
    }

    @Override
    public LuckPermsPlugin getPlugin() {
        return this.plugin;
    }

    @Override
    public void reload() {
        // no-op
    }
}
