fn add_token()

in src/vtok_srv/src/worker.rs [58:93]
28 lines of code
2 McCabe index (conditional complexity)

    fn add_token(token: schema::Token) -> ApiResponse {
        let mut config = config::Config::load_rw().map_err(|_| ApiError::InternalError)?;

        // Check if the token label is already in use by another token.
        let dup = config
            .slots()
            .iter()
            .filter(|s| match s {
                None => false,
                Some(tok) => tok.label == token.label,
            })
            .count();
        if dup > 0 {
            return Err(ApiError::TokenLabelInUse);
        }

        let private_keys = Self::decrypt_token_keys(token.keys, token.envelope_key)?;

        // Find the first free slot.
        let free_slot = config
            .slots_mut()
            .iter_mut()
            .find(|s| s.is_none())
            .ok_or(ApiError::TooManyTokens)?;

        free_slot.replace(config::Token {
            label: token.label,
            pin: token.pin,
            private_keys,
            expiry_ts: util::time::monotonic_secs() + defs::TOKEN_EXPIRY_SECS,
        });

        config.save().map_err(|_| ApiError::InternalError)?;

        Ok(ApiOk::None)
    }