add install for reveal. docs in progrees

src/app/commands/setup.rs

@@ -1,4 +1,4 @@
-use std::collections::HashMap;
+use std::{collections::HashMap, env, fs::File, io::Write, fmt::format};
 
 use super::traits::Command;
 
@@ -14,3 +14,40 @@ impl Command for Setup {
        return Self {}
    }
 }
+
+
+impl Setup {
+
+    fn setup() {
+        let os = env::consts::OS;
+
+        let reveal_bin_url = format!("https://github.com/asciidoctor/asciidoctor-reveal.js/releases/download/v5.0.0-rc.1/asciidoctor-revealjs-{os}");
+        let reveal_bin = Self::donwload(&reveal_bin_url).expect("could not download asciidoctor binary");
+        let mut reveal_file = File::create("/usr/local/bin/asciidoctor").expect("could not save asciidoctor binary");
+        reveal_file.write_all(reveal_bin);
+    }
+
+    fn donwload(url: &str) -> Result<&[u8], ()> {
+        let Ok(response) = reqwest::blocking::get(url) else {
+            return Err(());
+        };
+
+        let Ok(data) = response.bytes() else {
+            return Err(());
+        };
+
+        return Ok(&data)
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use std::env;
+
+
+    #[test]
+    fn download() {
+        println!("{}", env::consts::OS);
+        assert!(false)
+    }
+}