use anyhow::Result;
use std::path::PathBuf;

#[derive(Debug, Clone)]
pub struct Config {
    pub listen_addr: String,
    pub database_url: String,
    pub data_dir: String,
    pub max_connections: u32,
    /// Games whose opt-in development content pack (`data/games/<game>/dev/`) is
    /// loaded IN ADDITION to the default `data/cards` catalog. Empty by default —
    /// default/test content is never affected unless a game is named here.
    pub dev_content_games: Vec<String>,
    /// Explicit PRODUCTION content pack file paths (each a `CardDefinition[]`
    /// JSON), loaded IN ADDITION to `data/cards` and any dev pack. This is the
    /// production real-profile content path — deliberately NOT gated behind the
    /// dev-only `dev_content_games`.
    pub content_packs: Vec<PathBuf>,
}

impl Config {
    pub fn from_env() -> Result<Self> {
        Ok(Self {
            listen_addr: std::env::var("LISTEN_ADDR").unwrap_or_else(|_| "127.0.0.1:8080".into()),
            database_url: std::env::var("DATABASE_URL")
                .unwrap_or_else(|_| "sqlite://openfut.db".into()),
            data_dir: std::env::var("DATA_DIR").unwrap_or_else(|_| "data".into()),
            max_connections: std::env::var("DB_MAX_CONNECTIONS")
                .ok()
                .and_then(|v| v.parse().ok())
                .unwrap_or(5),
            dev_content_games: std::env::var("OPENFUT_DEV_CONTENT_GAMES")
                .ok()
                .map(|v| {
                    v.split(',')
                        .map(str::trim)
                        .filter(|s| !s.is_empty())
                        .map(String::from)
                        .collect()
                })
                .unwrap_or_default(),
            content_packs: std::env::var("OPENFUT_CONTENT_PACKS")
                .ok()
                .map(|v| {
                    v.split(',')
                        .map(str::trim)
                        .filter(|s| !s.is_empty())
                        .map(PathBuf::from)
                        .collect()
                })
                .unwrap_or_default(),
        })
    }
}