use crate::configuration::Configuration;
use std::io::Result;

pub struct Version;

impl Version {
    pub fn new() -> Self {
        Version
    }
}

impl super::Command for Version {
    fn before_dependencies(&self) -> Vec<Box<dyn super::Command>> {
        vec![]
    }

    fn execute(&self, _: Option<&String>, _: &Configuration, _: &str) -> Result<()> {
        let version = env!("CARGO_PKG_VERSION");
        println!("{version}");
        Ok(())
    }

    fn after_dependencies(&self) -> Vec<Box<dyn super::Command>> {
        vec![]
    }

    fn command(&self) -> &'static str {
        "version"
    }

    fn help(&self) -> &'static str {
        "\t\t\t\tPrints the version"
    }
}

#[cfg(test)]
mod tests {

    use super::*;
    use crate::command::Command;
    use crate::configuration::Configuration;

    #[test]
    fn test_version_command() {
        let version = Version::new();

        let configuration = Configuration::new().unwrap();
        version
            .execute(None, &configuration, "")
            .expect("Could not call version");
    }

    #[test]
    fn version_before_dependencies() {
        let version = Version::new();
        let dependencies = version.before_dependencies();

        assert_eq!(dependencies.len(), 0);
    }

    #[test]
    fn version_after_dependencies() {
        let version = Version::new();
        let dependencies = version.after_dependencies();

        assert_eq!(dependencies.len(), 0);
    }

    // These two tests feel pointless but I'm doing it for the coverage :p

    #[test]
    fn version_command_output() {
        let version = Version::new();
        version.command();
    }

    #[test]
    fn version_help_output() {
        let version = Version::new();
        version.help();
    }
}