flams_git/gl/

auth.rs

use super::GitLab;
use flams_utils::unwrap;
use ftml_uris::ArchiveId;
use gitlab::api::AsyncQuery;
pub use oauth2::AccessToken;
use oauth2::{url::Url, TokenResponse};
use tracing::{instrument, Instrument};

#[derive(Debug, Clone)]
pub struct GitLabOAuth(
    oauth2::basic::BasicClient<
        oauth2::EndpointSet,
        oauth2::EndpointNotSet,
        oauth2::EndpointNotSet,
        oauth2::EndpointNotSet,
        oauth2::EndpointSet,
    >,
    GitLab,
);

#[derive(Debug, Clone, serde::Deserialize)]
pub struct AuthRequest {
    pub code: String,
    //state: String
}

impl GitLabOAuth {
    pub fn login_url(&self) -> Url {
        let (url, _) = self
            .0
            .authorize_url(oauth2::CsrfToken::new_random)
            .add_scope(oauth2::Scope::new("read_user".to_string()))
            .add_scope(oauth2::Scope::new("api".to_string()))
            .url();
        url
    }
    /// #### Errors
    pub async fn callback(
        &self,
        request: AuthRequest,
    ) -> Result<AccessToken, impl std::error::Error> {
        use oauth2::AuthorizationCode;
        let code = AuthorizationCode::new(request.code);
        let req = unwrap!(oauth2::reqwest::ClientBuilder::new().build().ok());
        self.0
            .exchange_code(code)
            .request_async(&req)
            .instrument(crate::REMOTE_SPAN.clone())
            .await
            .map(|token| token.access_token().clone())
    }

    /// #### Errors
    pub async fn get_projects(
        &self,
        token: String,
    ) -> Result<Vec<flams_backend_types::git::Project>, super::Err> {
        self.get_projects_i(token)
            .instrument(crate::REMOTE_SPAN.clone())
            .await
    }
    #[instrument(
        level = "debug",
        target = "git",
        name = "getting all projects for user",
        skip_all
    )]
    async fn get_projects_i(
        &self,
        token: String,
    ) -> Result<Vec<flams_backend_types::git::Project>, super::Err> {
        let mut client = gitlab::ImpersonationClient::new(&self.1 .0.inner, token);
        client.oauth2_token();
        let r = gitlab::api::projects::Projects::builder()
            .simple(true)
            .min_access_level(gitlab::api::common::AccessLevel::Developer)
            //.membership(false)
            .build()
            .unwrap_or_else(|_| unreachable!());
        let r: Vec<flams_backend_types::git::Project> =
            gitlab::api::paged(r, gitlab::api::Pagination::All)
                .query_async(&client)
                .await?;
        let mut vs = self.1 .0.projects.lock();
        vs.clear();
        for p in &r {
            if !vs.contains(&p.id) {
                vs.insert(super::ProjectWithId {
                    project: p.clone(),
                    id: None,
                });
            }
        }
        drop(vs);
        Ok(r)
    }

    /// #### Errors
    pub async fn get_archive_id(
        &self,
        id: u64,
        token: String,
        branch: &str,
    ) -> Result<Option<ArchiveId>, super::Err> {
        self.get_archive_id_i(id, token, branch)
            .instrument(crate::REMOTE_SPAN.clone())
            .await
    }

    /// # Errors
    #[instrument(
        level = "debug",
        target = "git",
        name = "getting archive id",
        skip(self, token)
    )]
    pub async fn get_archive_id_i(
        &self,
        id: u64,
        token: String,
        branch: &str,
    ) -> Result<Option<ArchiveId>, super::Err> {
        {
            let vs = self.1 .0.projects.lock();
            if let Some(super::ProjectWithId { id: Some(id), .. }) = vs.get(&id) {
                return Ok(id.clone());
            }
        }

        macro_rules! ret {
            ($v:expr) => {{
                tracing::info!("Found {:?}", $v);
                let mut lock = self.1 .0.projects.lock();
                if let Some(mut v) = lock.take(&id) {
                    v.id = Some($v.clone());
                    lock.insert(v);
                }
                drop(lock);
                return Ok($v);
            }};
        }
        let mut client = gitlab::ImpersonationClient::new(&self.1 .0.inner, token);
        client.oauth2_token();
        let r = gitlab::api::projects::repository::TreeBuilder::default()
            .project(id)
            .ref_(branch)
            .recursive(false)
            .build()
            .unwrap_or_else(|_| unreachable!());
        let r: Vec<flams_backend_types::git::TreeEntry> = r.query_async(&client).await?;
        let Some(p) = r.into_iter().find_map(|e| {
            if e.path.eq_ignore_ascii_case("meta-inf")
                && matches!(e.tp, flams_backend_types::git::DirOrFile::Dir)
            {
                Some(e.path)
            } else {
                None
            }
        }) else {
            ret!(None::<ArchiveId>)
        };

        let r = gitlab::api::projects::repository::TreeBuilder::default()
            .project(id)
            .ref_(branch)
            .path(p)
            .recursive(false)
            .build()
            .unwrap_or_else(|_| unreachable!());
        let r: Vec<flams_backend_types::git::TreeEntry> = r.query_async(&client).await?;
        let Some(p) = r.into_iter().find_map(|e| {
            if e.name.eq_ignore_ascii_case("manifest.mf")
                && matches!(e.tp, flams_backend_types::git::DirOrFile::File)
            {
                Some(e.path)
            } else {
                None
            }
        }) else {
            ret!(None::<ArchiveId>)
        };

        let blob = gitlab::api::projects::repository::files::FileRaw::builder()
            .project(id)
            .file_path(p)
            .ref_(branch)
            .build()
            .unwrap_or_else(|_| unreachable!());
        let r = gitlab::api::raw(blob).query_async(&client).await?;
        let r = std::str::from_utf8(&r)?;
        let r = r.split('\n').find_map(|line| {
            let line = line.trim();
            line.strip_prefix("id:")
                .and_then(|rest| ArchiveId::new(rest.trim()).ok())
        });
        ret!(r)
    }

    /// #### Errors
    pub async fn get_branches(
        &self,
        id: u64,
        token: String,
    ) -> Result<Vec<flams_backend_types::git::Branch>, super::Err> {
        self.get_branches_i(id, token)
            .instrument(crate::REMOTE_SPAN.clone())
            .await
    }

    /// # Errors
    #[instrument(
        level = "debug",
        target = "git",
        name = "getting branches for archive",
        skip(self, token)
    )]
    pub async fn get_branches_i(
        &self,
        id: u64,
        token: String,
    ) -> Result<Vec<flams_backend_types::git::Branch>, super::Err> {
        let mut client = gitlab::ImpersonationClient::new(&self.1 .0.inner, token);
        client.oauth2_token();
        let r = gitlab::api::projects::repository::branches::Branches::builder()
            .project(id)
            .build()
            .map_err(|e| super::Err::Other(e.to_string()))?
            .query_async(&client)
            .await?;
        Ok(r)
    }
}

impl GitLab {
    /// #### Errors
    pub fn new_oauth(&self, redirect: &str) -> Result<GitLabOAuth, OAuthError> {
        use oauth2::{AuthUrl, ClientId, ClientSecret, RedirectUrl, TokenUrl};
        let url = &self.0.url;
        let Some(app_id) = &self.0.id else {
            return Err(OAuthError::MissingAppID);
        };
        let Some(app_secret) = &self.0.secret else {
            return Err(OAuthError::MissingAppSecret);
        };
        let Ok(auth_url) = AuthUrl::new(format!("{url}/oauth/authorize")) else {
            return Err(OAuthError::InvalidAuthURL(format!("{url}/oauth/authorize")));
        };
        let Ok(token_url) = TokenUrl::new(format!("{url}/oauth/token")) else {
            return Err(OAuthError::InvalidTokenURL(format!("{url}/oauth/token")));
        };
        let Ok(redirect_url) = RedirectUrl::new(redirect.to_string()) else {
            return Err(OAuthError::InvalidRedirectURL(redirect.to_string()));
        };
        let auth = oauth2::basic::BasicClient::new(ClientId::new(app_id.to_string()))
            .set_client_secret(ClientSecret::new(app_secret.to_string()))
            .set_auth_uri(auth_url)
            .set_token_uri(token_url)
            .set_redirect_uri(redirect_url);
        Ok(GitLabOAuth(auth, self.clone()))
    }

    /// #### Errors
    pub async fn get_oauth_user(
        &self,
        token: &oauth2::AccessToken,
    ) -> Result<GitlabUser, reqwest::Error> {
        let client = reqwest::Client::new();
        let resp = client
            .get(format!("{}/api/v4/user", self.0.url))
            .bearer_auth(token.secret())
            .send()
            .instrument(crate::REMOTE_SPAN.clone())
            .await?;
        resp.json().instrument(crate::REMOTE_SPAN.clone()).await
    }
}

#[derive(Debug)]
pub enum OAuthError {
    InvalidAuthURL(String),
    InvalidTokenURL(String),
    InvalidRedirectURL(String),
    MissingAppID,
    MissingAppSecret,
}
impl std::fmt::Display for OAuthError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Self::InvalidAuthURL(s) => write!(f, "Invalid auth url: {s}"),
            Self::InvalidTokenURL(s) => write!(f, "Invalid token url: {s}"),
            Self::InvalidRedirectURL(s) => write!(f, "Invalid redirect url: {s}"),
            Self::MissingAppID => write!(f, "Missing app id"),
            Self::MissingAppSecret => write!(f, "Missing secret"),
        }
    }
}

impl std::error::Error for OAuthError {}

#[derive(Debug, serde::Deserialize, serde::Serialize)]
pub struct GitlabUser {
    pub id: i64,
    pub username: String,
    pub name: String,
    //state:String,
    pub avatar_url: String,
    //pronouns:Option<String>,
    pub email: Option<String>,
    //commit_email:Option<String>,
    pub can_create_group: bool,
    pub can_create_project: bool,
}

/*
{
  "id":2,
  "username":"jazzpirate",
  "name":"Dennis Test",
  "state":"active",
  "locked":false,
  "avatar_url":"https://www.gravatar.com/avatar/46a2a1db127c1d43862f7313d137b5ed3bdac8ffe356c7dcc868f25e413e83c0?s=80\\u0026d=identicon",
  "web_url":"http://gitlab.example.com/jazzpirate",
  "created_at":"2024-12-23T10:35:40.099Z",
  "bio":"",
  "location":"",
  "public_email":null,
  "skype":"",
  "linkedin":"",
  "twitter":"",
  "discord":"",
  "website_url":"",
  "organization":"",
  "job_title":"",
  "pronouns":null,
  "bot":false,
  "work_information":null,
  "local_time":null,
  "last_sign_in_at":"2024-12-23T10:36:24.234Z",
  "confirmed_at":"2024-12-23T10:35:39.994Z",
  "last_activity_on":"2024-12-29",
  "email":"d.mueller@kwarc.info",
  "theme_id":3,
  "color_scheme_id":1,
  "projects_limit":100000,
  "current_sign_in_at":
  "2024-12-29T08:48:51.974Z",
  "identities":[],
  "can_create_group":true,
  "can_create_project":true,
  "two_factor_enabled":false,
  "external":false,
  "private_profile":false,
  "commit_email":"d.mueller@kwarc.info"
}
 */