/*
    Hurry Curry! - a game about cooking
    Copyright (C) 2025 Hurry Curry! Contributors

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, version 3 of the License only.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.

*/

pub mod error;
pub use error::*;
pub mod message;
#[macro_use]
pub mod macros;

use anyhow::{Error, Result, anyhow};
use std::{collections::HashMap, fs::read_to_string, ops::Index, path::Path, sync::LazyLock};

pub struct Locale(HashMap<String, String>);
impl Index<&'static str> for Locale {
    type Output = str;
    fn index(&self, index: &'static str) -> &Self::Output {
        self.0.get(index).map(|s| s.as_str()).unwrap_or(index)
    }
}

impl Locale {
    // pub fn load_from_env() -> Result<Self> {
    //     if let Some(dir) = option_env!("LOCALE_DIR") {
    //         let mut test_order = Vec::new();
    //         test_order.extend(var("LC_MESSAGE").ok());
    //         test_order.extend(var("LC_ALL").or(var("LANG")).ok());
    //         test_order.push("en_US.UTF-8".to_string());
    //     } else {
    //         Ok(Self::load_fallback()?)
    //     }
    // }
    pub fn merge(&mut self, other: Self) {
        for (k, v) in other.0 {
            self.0.entry(k).or_insert(v);
        }
    }
    pub fn load(path: &Path) -> Result<Self> {
        Self::parse(&read_to_string(path)?)
    }
    pub fn load_fallback() -> Result<Self> {
        Self::parse(include_str!("../../../locale/en.ini"))
    }
    pub fn parse(ini: &str) -> Result<Self> {
        Ok(Self(
            ini.lines()
                .skip(1)
                .map(|l| {
                    let (k, v) = l.split_once("=").ok_or(anyhow!("'=' missing"))?;
                    Ok::<_, Error>((k.trim_end().to_owned(), v.trim_start().replace("%n", "\n")))
                })
                .collect::<anyhow::Result<HashMap<_, _>>>()?,
        ))
    }
    pub fn get(&self, id: &str) -> Option<&str> {
        self.0.get(id).map(|x| x.as_str())
    }
}

pub static GLOBAL_LOCALE: LazyLock<Locale> = LazyLock::new(|| Locale::load_fallback().unwrap());
pub fn tr(s: &'static str) -> &'static str {
    &GLOBAL_LOCALE[s] // TODO crash or placeholder?
}