294 lines
9.7 KiB
Rust
294 lines
9.7 KiB
Rust
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use config::{Config, ConfigError};
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use http::{Http, HttpError};
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use models;
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use models::{Token, Game, Installer};
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use serde_json;
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use serde_json::Value;
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use std::fs;
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use std::io;
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use std::io::Write;
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use std::path::Path;
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#[derive(Debug)]
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pub enum GogError {
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Error(&'static str),
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ConfigError(ConfigError),
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HttpError(HttpError),
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SerdeError(serde_json::Error),
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IOError(io::Error),
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}
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impl From<ConfigError> for GogError {
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fn from(e: ConfigError) -> Self {
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GogError::ConfigError(e)
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}
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}
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impl From<HttpError> for GogError {
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fn from(e: HttpError) -> Self {
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GogError::HttpError(e)
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}
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}
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impl From<serde_json::Error> for GogError {
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fn from(e: serde_json::Error) -> Self {
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GogError::SerdeError(e)
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}
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}
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impl From<io::Error> for GogError {
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fn from(e: io::Error) -> Self {
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GogError::IOError(e)
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}
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}
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pub struct Gog<'a> {
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client_id: String,
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client_secret: String,
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redirect_uri: String,
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games_uri: String,
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http_client: &'a mut Http,
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}
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impl<'a> Gog<'a> {
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pub fn new(http_client: &'a mut Http) -> Gog<'a> {
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Gog {
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client_id: String::from("46899977096215655"),
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client_secret: String::from("9d85c43b1482497dbbce61f6e4aa173a433796eeae2ca8c5f6129f2dc4de46d9"),
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redirect_uri: String::from("https://embed.gog.com/on_login_success?origin=client"),
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games_uri: String::from("https://embed.gog.com/user/data/games"),
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http_client: http_client,
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}
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}
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pub fn login(&mut self) -> Result<(), GogError> {
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let config = Config::new();
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let mut token: Token = match config.load("token.toml") {
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Ok(value) => value,
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Err(_) => {
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let code = self.get_code()?;
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self.get_token(code.as_str())?
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}
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};
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if token.is_expired() {
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token = self.refresh_token(token.refresh_token.as_str())?;
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}
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config.save("token.toml", &token)?;
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let auth_header = format!("Authorization: Bearer {token}", token = token.access_token);
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self.http_client.add_header(auth_header.as_str())?;
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Ok(())
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}
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pub fn sync(&mut self, storage_path: &str) -> Result<(), GogError> {
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let game_ids = self.get_game_ids()?;
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for game_id in game_ids {
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let game = self.get_game(game_id)?;
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let game_hash = models::get_hash(&game);
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let game_root = Path::new(storage_path).join(&game.title);
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fs::create_dir_all(&game_root)?;
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for installer in game.installers {
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let installer_hash = models::get_hash(&installer);
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let installer_uri = format!("https://embed.gog.com{}", installer.manual_url);
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info!("downloading {} for {}...",
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&installer.manual_url,
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&game.title);
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self.http_client.download(installer_uri.as_str(), &game_root)?;
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}
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for extra in game.extras {
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let extra_hash = models::get_hash(&extra);
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let extra_uri = format!("https://embed.gog.com{}", extra.manual_url);
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info!("downloading {} for {}...", &extra.name, &game.title);
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self.http_client.download(extra_uri.as_str(), &game_root)?;
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}
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}
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Ok(())
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}
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fn get_code(&self) -> Result<String, GogError> {
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let auth_uri = self.auth_uri(self.client_id.as_str(), self.redirect_uri.as_str());
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println!("{}", auth_uri);
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let mut code = String::new();
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print!("Code: ");
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io::stdout().flush()?;
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io::stdin()
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.read_line(&mut code)
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.expect("Failed to read line");
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Ok(code)
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}
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fn get_token(&mut self, code: &str) -> Result<Token, GogError> {
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let token_uri = self.token_uri(self.client_id.as_str(),
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self.client_secret.as_str(),
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code,
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self.redirect_uri.as_str());
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let token_response = match self.http_client.get(token_uri.as_str()) {
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Ok(value) => value,
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Err(error) => return Err(GogError::HttpError(error)),
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};
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match serde_json::from_str(&token_response) {
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Ok(value) => Ok(value),
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Err(error) => Err(GogError::SerdeError(error)),
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}
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}
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fn refresh_token(&mut self, refresh_token: &str) -> Result<Token, GogError> {
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let token_refresh_uri = self.token_refresh_uri(self.client_id.as_str(),
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self.client_secret.as_str(),
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refresh_token);
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let token_response = match self.http_client.get(token_refresh_uri.as_str()) {
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Ok(value) => value,
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Err(error) => return Err(GogError::HttpError(error)),
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};
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match serde_json::from_str(&token_response) {
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Ok(value) => Ok(value),
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Err(error) => Err(GogError::SerdeError(error)),
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}
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}
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fn get_game_ids(&mut self) -> Result<Vec<u64>, GogError> {
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let response = self.http_client.get(self.games_uri.as_str())?;
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let game_ids_raw: Value = serde_json::from_str(response.as_str())?;
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let game_ids_serde = &game_ids_raw["owned"];
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let mut game_ids: Vec<u64> = Vec::new();
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if !game_ids_serde.is_array() {
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return Err(GogError::Error("Error parsing game ids."));
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}
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for game_id in game_ids_serde.as_array().unwrap() {
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let game_id_parsed = game_id.as_u64().unwrap_or(0);
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if game_id_parsed == 0 {
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error!("Cant parse game id {}", game_id);
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continue;
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}
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game_ids.push(game_id_parsed);
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}
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return Ok(game_ids);
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}
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fn get_game(&mut self, game_id: u64) -> Result<Game, GogError> {
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let game_uri = self.game_uri(game_id);
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let response = self.http_client.get(game_uri.as_str())?;
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let mut game: Game = serde_json::from_str(&response)?;
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let game_raw: Value = serde_json::from_str(response.as_str())?;
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let downloads = &game_raw["downloads"];
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for languages in downloads.as_array() {
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for language in languages {
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if !language.is_array() || language.as_array().unwrap().len() < 2 {
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error!("Skipping a language for {}", game.title);
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continue;
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}
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let installer_language = match language[0].as_str() {
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Some(value) => value,
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None => "",
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};
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if installer_language == "" {
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error!("Skipping a language for {}", game.title);
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continue;
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}
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for systems in language[1].as_object() {
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for system in systems.keys() {
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for real_downloads in systems.get(system) {
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for real_download in real_downloads.as_array() {
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let download = &real_download[0];
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if !download.is_object() ||
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!download.as_object().unwrap().contains_key("manualUrl") {
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error!("Skipping an installer for {}", game.title);
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continue;
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}
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let installer = Installer {
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manual_url: String::from(download["manualUrl"]
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.as_str()
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.unwrap()),
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version: String::from(download["version"]
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.as_str()
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.unwrap_or("")),
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os: system.clone(),
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language: String::from(installer_language),
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};
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game.installers.push(installer);
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}
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}
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}
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}
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}
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}
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Ok(game)
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}
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fn auth_uri(&self, client_id: &str, redirect_uri: &str) -> String {
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format!("https://auth.gog.\
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com/auth?client_id={client_id}&redirect_uri={redirect_uri}&response_type=code&layout=client2",
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client_id = client_id,
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redirect_uri = redirect_uri)
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}
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fn token_uri(&self,
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client_id: &str,
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client_secret: &str,
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code: &str,
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redirect_uri: &str)
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-> String {
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format!("https://auth.gog.\
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com/token?client_id={client_id}&client_secret={client_secret}&grant_type=authorization_code&code={code}&redirect_uri={redirect_uri}",
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client_id = client_id,
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client_secret = client_secret,
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code = code.trim(),
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redirect_uri = redirect_uri)
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}
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fn token_refresh_uri(&self,
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client_id: &str,
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client_secret: &str,
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refresh_token: &str)
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-> String {
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format!("https://auth.gog.\
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com/token?client_id={client_id}&client_secret={client_secret}&grant_type=refresh_token&refresh_token={refresh_token}",
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client_id = client_id,
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client_secret = client_secret,
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refresh_token = refresh_token)
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}
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fn game_uri(&self, game_id: u64) -> String {
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format!("https://embed.gog.com/account/gameDetails/{game_id}.json",
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game_id = game_id)
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}
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}
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