//! ## FileTransfer
//!
//! `filetransfer` is the module which provides the file transfer protocols and remotefs builders

/**
 * MIT License
 *
 * termscp - Copyright (c) 2021 Christian Visintin
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
mod builder;
pub mod params;

// -- export types
pub use builder::Builder;
pub use params::{FileTransferParams, ProtocolParams};

/// This enum defines the different transfer protocol available in termscp

#[derive(PartialEq, Debug, Clone, Copy)]
pub enum FileTransferProtocol {
    Sftp,
    Scp,
    Ftp(bool), // Bool is for secure (true => ftps)
    AwsS3,
}

// Traits

impl std::string::ToString for FileTransferProtocol {
    fn to_string(&self) -> String {
        String::from(match self {
            FileTransferProtocol::Ftp(secure) => match secure {
                true => "FTPS",
                false => "FTP",
            },
            FileTransferProtocol::Scp => "SCP",
            FileTransferProtocol::Sftp => "SFTP",
            FileTransferProtocol::AwsS3 => "S3",
        })
    }
}

impl std::str::FromStr for FileTransferProtocol {
    type Err = String;
    fn from_str(s: &str) -> Result<Self, Self::Err> {
        match s.to_ascii_uppercase().as_str() {
            "FTP" => Ok(FileTransferProtocol::Ftp(false)),
            "FTPS" => Ok(FileTransferProtocol::Ftp(true)),
            "SCP" => Ok(FileTransferProtocol::Scp),
            "SFTP" => Ok(FileTransferProtocol::Sftp),
            "S3" => Ok(FileTransferProtocol::AwsS3),
            _ => Err(s.to_string()),
        }
    }
}

// Tests

#[cfg(test)]
mod tests {

    use super::*;

    use pretty_assertions::assert_eq;
    use std::str::FromStr;
    use std::string::ToString;

    #[test]
    fn test_filetransfer_mod_protocol() {
        assert_eq!(
            FileTransferProtocol::Ftp(true),
            FileTransferProtocol::Ftp(true)
        );
        assert_eq!(
            FileTransferProtocol::Ftp(false),
            FileTransferProtocol::Ftp(false)
        );
        // From str
        assert_eq!(
            FileTransferProtocol::from_str("FTPS").ok().unwrap(),
            FileTransferProtocol::Ftp(true)
        );
        assert_eq!(
            FileTransferProtocol::from_str("ftps").ok().unwrap(),
            FileTransferProtocol::Ftp(true)
        );
        assert_eq!(
            FileTransferProtocol::from_str("FTP").ok().unwrap(),
            FileTransferProtocol::Ftp(false)
        );
        assert_eq!(
            FileTransferProtocol::from_str("ftp").ok().unwrap(),
            FileTransferProtocol::Ftp(false)
        );
        assert_eq!(
            FileTransferProtocol::from_str("SFTP").ok().unwrap(),
            FileTransferProtocol::Sftp
        );
        assert_eq!(
            FileTransferProtocol::from_str("sftp").ok().unwrap(),
            FileTransferProtocol::Sftp
        );
        assert_eq!(
            FileTransferProtocol::from_str("SCP").ok().unwrap(),
            FileTransferProtocol::Scp
        );
        assert_eq!(
            FileTransferProtocol::from_str("scp").ok().unwrap(),
            FileTransferProtocol::Scp
        );
        assert_eq!(
            FileTransferProtocol::from_str("S3").ok().unwrap(),
            FileTransferProtocol::AwsS3
        );
        assert_eq!(
            FileTransferProtocol::from_str("s3").ok().unwrap(),
            FileTransferProtocol::AwsS3
        );
        // Error
        assert!(FileTransferProtocol::from_str("dummy").is_err());
        // To String
        assert_eq!(
            FileTransferProtocol::Ftp(true).to_string(),
            String::from("FTPS")
        );
        assert_eq!(
            FileTransferProtocol::Ftp(false).to_string(),
            String::from("FTP")
        );
        assert_eq!(FileTransferProtocol::Scp.to_string(), String::from("SCP"));
        assert_eq!(FileTransferProtocol::Sftp.to_string(), String::from("SFTP"));
        assert_eq!(FileTransferProtocol::AwsS3.to_string(), String::from("S3"));
    }
}