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use serde::Serialize;

#[derive(Debug, Serialize, Default)]
pub struct SpeedTestCsvResult<'a> {
    #[serde(rename = "Server ID")]
    pub server_id: &'a str,
    #[serde(rename = "Sponsor")]
    pub sponsor: &'a str,
    #[serde(rename = "Server Name")]
    pub server_name: &'a str,
    #[serde(rename = "Timestamp")]
    pub timestamp: &'a str,
    #[serde(rename = "Distance")]
    pub distance: &'a str,
    #[serde(rename = "Ping")]
    pub ping: &'a str,
    #[serde(rename = "Download")]
    pub download: &'a str,
    #[serde(rename = "Upload")]
    pub upload: &'a str,
    #[serde(rename = "Share")]
    pub share: &'a str,
    #[serde(rename = "IP Address")]
    pub ip_address: &'a str,
}

impl<'a> SpeedTestCsvResult<'a> {
    pub fn header_serialize(self) -> String {
        // Un-dynamic for now
        // Blocked on:
        // * https://github.com/BurntSushi/rust-csv/issues/161 being implemented or solved
        // * https://github.com/BurntSushi/rust-csv/pull/193/files, like in this?
        "Server ID,Sponsor,Server Name,Timestamp,Distance,Ping,Download,Upload,Share,IP Address"
            .to_string()
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use std::error::Error;

    #[test]
    fn test_header_serialize() -> Result<(), Box<dyn Error>> {
        let original = "Server ID,Sponsor,Server Name,Timestamp,Distance,Ping,Download,Upload,Share,IP Address";

        let results = SpeedTestCsvResult::default();

        assert_eq!(results.header_serialize(), original);
        Ok(())
    }
}