use oiseau::config::{Configuration, DatabaseConfig};
use pathbufd::PathBufD;
use serde::{Deserialize, Serialize};

#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct Config {
    /// The name of the site. Shown in the UI.
    #[serde(default = "default_name")]
    pub name: String,
    /// The (CSS) theme color of the site. Shown in the UI.
    #[serde(default = "default_theme_color")]
    pub theme_color: String,
    /// Real IP header (for reverse proxy).
    #[serde(default = "default_real_ip_header")]
    pub real_ip_header: String,
    /// Database configuration.
    #[serde(default = "default_database")]
    pub database: DatabaseConfig,
}

fn default_name() -> String {
    "App".to_string()
}

fn default_theme_color() -> String {
    "#6ee7b7".to_string()
}

fn default_real_ip_header() -> String {
    "CF-Connecting-IP".to_string()
}

fn default_database() -> DatabaseConfig {
    DatabaseConfig::default()
}

impl Configuration for Config {
    fn db_config(&self) -> DatabaseConfig {
        self.database.to_owned()
    }
}

impl Default for Config {
    fn default() -> Self {
        Self {
            name: default_name(),
            theme_color: default_theme_color(),
            real_ip_header: default_real_ip_header(),
            database: default_database(),
        }
    }
}

impl Config {
    /// Read the configuration file.
    pub fn read() -> Self {
        toml::from_str(
            &match std::fs::read_to_string(PathBufD::current().join("app.toml")) {
                Ok(x) => x,
                Err(_) => {
                    let x = Config::default();

                    std::fs::write(
                        PathBufD::current().join("app.toml"),
                        &toml::to_string_pretty(&x).expect("failed to serialize config"),
                    )
                    .expect("failed to write config");

                    return x;
                }
            },
        )
        .expect("failed to deserialize config")
    }
}