#[derive(Debug, Eq, PartialEq)]
pub struct Dialogue {
    pub id: String,
    pub contents: String,
}

impl From<String> for Dialogue {
    #[inline]
    fn from(string: String) -> Dialogue {
        let lines: Vec<&str> = string.lines().collect();
        let id = lines[0].replace("DLG ", "").to_string();
        let contents = lines[1..].join("\n");

        Dialogue { id, contents }
    }
}

impl ToString for Dialogue {
    #[inline]
    fn to_string(&self) -> String {
        format!("DLG {}\n{}", self.id, self.contents)
    }
}

#[cfg(test)]
mod test {
    use crate::dialogue::Dialogue;

    #[test]
    fn test_dialogue_from_string() {
        assert_eq!(
            Dialogue::from("DLG h\nhello\ngoodbye".to_string()),
            Dialogue { id: "h".to_string(), contents: "hello\ngoodbye".to_string()}
        )
    }

    #[test]
    fn test_dialogue_to_string() {
        let output = Dialogue {
            id: "y".to_string(),
            contents: "This is a bit of dialogue,\nblah blah\nblah blah".to_string()
        }.to_string();
        let expected = "DLG y\nThis is a bit of dialogue,\nblah blah\nblah blah".to_string();
        assert_eq!(output, expected);
    }
}