use crate::config::types::{ApplicationConfig, BasicConfig, PathConfig};
use crate::constants::{APP_CONIFG_FILE_PATH, APP_DB_DATA_DIR};
use color_eyre::Result;
use std::path::PathBuf;
use language_tags::LanguageTag;
use ratatui::widgets::ListState;
use serde_json;

pub mod types;

pub(crate) struct GameList<T> {
    games: Vec<T>,
    state: ListState,
}

impl ApplicationConfig {
    pub fn get_config() -> Result<Self> {
        if APP_CONIFG_FILE_PATH.exists() {
            ApplicationConfig::from_file(&APP_CONIFG_FILE_PATH)
        } else {
            Ok(ApplicationConfig::new())
        }
    }

    fn from_file(path: &PathBuf) -> Result<Self> {
        let reader = std::fs::File::open(path)?;
        let result = serde_json::from_reader(reader)?;
        Ok(result)
    }

    fn new() -> Self {
        let default_locale = sys_locale::get_locale().unwrap_or(String::from("ja-JP"));
        let conf = Self {
            basic_config: BasicConfig {
                db_path: APP_DB_DATA_DIR.to_str().unwrap().to_string(),
                tick_rate: 250,
                locale: LanguageTag::parse(&default_locale).unwrap(),
            },
            path_config: PathConfig {
                dlsite_paths: vec![],
            },
        };
        conf.clone()
            .write_to_file(&APP_CONIFG_FILE_PATH.to_path_buf())
            .unwrap();
        conf
    }

    fn write_to_file(self, path: &PathBuf) -> Result<()> {
        let writer = std::fs::File::create(path)?;
        let result = serde_json::to_writer_pretty(writer, &self)?;
        Ok(result)

    }

    pub fn save(&self) -> Result<()> {
        self.clone().write_to_file(&APP_CONIFG_FILE_PATH.to_path_buf())
    }
}