use std::path::PathBuf;
use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, Copy, PartialEq, Eq, Deserialize, Serialize)]
pub enum AppMode {
    Game,
    System,
}

#[derive(Debug, Clone)]
pub struct Cartridge {
    pub app_id: u32,
    pub title: String,
    pub app_version: String,
    pub app_mode: AppMode,
    pub entrypoint: String,
    pub program: Vec<u8>,
    pub assets_path: Option<PathBuf>,
}

#[derive(Debug, Clone, Deserialize, Serialize)]
pub struct CartridgeDTO {
    pub app_id: u32,
    pub title: String,
    pub app_version: String,
    pub app_mode: AppMode,
    pub entrypoint: String,
    pub program: Vec<u8>,
    pub assets_path: Option<PathBuf>,
}

impl From<CartridgeDTO> for Cartridge {
    fn from(dto: CartridgeDTO) -> Self {
        Self {
            app_id: dto.app_id,
            title: dto.title,
            app_version: dto.app_version,
            app_mode: dto.app_mode,
            entrypoint: dto.entrypoint,
            program: dto.program,
            assets_path: dto.assets_path,
        }
    }
}

#[derive(Debug)]
pub enum CartridgeError {
    NotFound,
    InvalidFormat,
    InvalidManifest,
    UnsupportedVersion,
    MissingProgram,
    IoError,
}

#[derive(Deserialize)]
pub struct CartridgeManifest {
    pub magic: String,
    pub cartridge_version: u32,
    pub app_id: u32,
    pub title: String,
    pub app_version: String,
    pub app_mode: AppMode,
    pub entrypoint: String,
}