/* Copyright 2021 Dominik George <nik@naturalnet.de>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

extern crate config;

fn load_config(config_file: String) -> config::Config {
    let mut conf = config::Config::default();

    conf.set("pam.flow", "password");

    conf
        .merge(config::File::with_name(&config_file)).unwrap()
        .merge(config::Environment::with_prefix("NSS_PAM_OIDC")).unwrap();

    return conf;
}

pub fn get_config(conf_args: config::Config) -> config::Config {
    let config_file: String;
    let config_file_passed = conf_args.get_str("config");
    if config_file_passed.is_ok() {
        config_file = config_file_passed.unwrap().to_string();
    } else {
        config_file = "/etc/nss_pam_oidc".to_string();
    }

    let mut conf = load_config(config_file);
    conf.merge(conf_args).unwrap();

    return conf;
}

pub fn argv_to_config(argv: Vec<String>) -> config::Config {
    let mut conf = config::Config::default();

    for arg in &argv {
        if arg.contains("=") {
            let split: Vec<&str> = arg.split("=").collect();
            conf.set(split[0], split[1]);
        } else {
            conf.set(arg, true);
        }
    }
    return conf;
}