feat: prompt to install missing command

src/system.rs

@@ -0,0 +1,60 @@
+use std::io::stderr;
+use std::process::Command;
+use std::process::Stdio;
+
+pub fn get_package_manager(shell: &str) -> Option<String> {
+	let package_managers = vec!["pacman", "apt", "dnf"];
+
+	for package_manager in package_managers {
+		let success = Command::new(shell)
+			.arg("-c")
+			.arg(format!("command -v {}", package_manager))
+			.output()
+			.expect("failed to execute process")
+			.status
+			.success();
+
+		if success {
+			return Some(package_manager.to_string());
+		}
+	}
+	None
+}
+
+pub fn get_packages(shell: &str, package_manager: &str, executable: &str) -> Option<Vec<String>> {
+	match package_manager {
+		"pacman" => {
+			let result = Command::new(shell)
+				.arg("-c")
+				.arg(format!("pacman -Fq /usr/bin/{}", executable))
+				.output()
+				.expect("failed to execute process");
+			if result.status.success() {
+				let output = String::from_utf8_lossy(&result.stdout)
+					.lines()
+					.map(|line| line.split_whitespace().next().unwrap().to_string())
+					.collect();
+				Some(output)
+			} else {
+				None
+			}
+		}
+		_ => unreachable!("Unsupported package manager"),
+	}
+}
+
+pub fn install_package(shell: &str, package_manager: &str, package: &str) -> bool {
+	match package_manager {
+		"pacman" => Command::new(shell)
+			.arg("-c")
+			.arg(format!("sudo pacman -S {}", package))
+			.stdout(stderr())
+			.stderr(Stdio::inherit())
+			.spawn()
+			.expect("failed to execute process")
+			.wait()
+			.unwrap()
+			.success(),
+		_ => unreachable!("Unsupported package manager"),
+	}
+}