rcon2mc 0.1.0

A RCON client lib for Minecraft server.
Documentation 
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/*
 * // Copyright (c) 2026 Jack Wang
 * //
 * // 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.
 * //
 * // Author: Jack Wang <wang@rjack.cn>
 * // GitHub: https://github.com/nearlyheadlessjack/rcon2mc
 */

use crate::error::RconError;
use crate::parser::utils::check_invalid_argument;
use crate::parser::utils::check_invalid_command;
use crate::rcon_client::RconClient;

pub fn difficulty(client: &mut RconClient, difficulty_name: &str) -> Result<(), RconError> {
    let arguments = vec!["peaceful", "easy", "normal", "hard"];
    check_invalid_argument(difficulty_name, arguments)?;

    let command = format!("difficulty {}", difficulty_name);

    let feedback = client.send(command.to_string())?;
    check_invalid_command(&feedback)?;
    if feedback.contains("Incorrect argument for command") {
        return Err(RconError::UnknownParserError(
            "Incorrect argument for command difficulty".to_string(),
        ));
    }
    if feedback.contains("The difficulty did not change") {
        return Ok(());
    }
    if feedback.contains("The difficulty has been set") {
        return Ok(());
    }
    // 1.12.2
    if feedback.contains("Set game difficulty to") {
        return Ok(());
    }
    Err(RconError::UnknownParserError(
        format!(
            "Unknown error when change difficulty to {}.",
            difficulty_name
        )
        .to_string(),
    ))
}

pub fn weather(client: &mut RconClient, weather_name: &str) -> Result<(), RconError> {
    let arguments = vec!["clear", "rain", "thunder"];
    check_invalid_argument(weather_name, arguments)?;

    let command = format!("weather {}", weather_name);

    let feedback = client.send(command.to_string())?;
    check_invalid_command(&feedback)?;

    if feedback.contains("Set the weather to") {
        return Ok(());
    }
    if feedback.contains("Changing to") {
        return Ok(());
    }

    Err(RconError::UnknownParserError(
        format!("Unknown error when set weather to {}.", weather_name).to_string(),
    ))
}