codemonument_bx 0.3.5

use home::home_dir;

use crate::BONNIE_VERSION;
use std::env;
use std::fs;
use std::path::PathBuf;

// Gets the pre-programmed default template
fn get_inbuilt_default_template() -> String {
	format!(
		"version=\"{version}\"

[scripts]
start = \"echo \\\"No start script yet!\\\"\"",
		version = BONNIE_VERSION
	)
}

// Gets the path of a default template
// This will return `Ok(None)` if no default template is available
fn get_template_path() -> Option<PathBuf> {
	match env::var("BONNIE_TEMPLATE") {
		// We'll use the given template file path if provided
		Ok(path) => Some(PathBuf::from(path)),
		// If that variable isn't set properly or at all, we'll try the user's global template file
		// This will return `Ok(None)` if the home template couldn't be found
		Err(_) => {
			// This will return `None` if the user's home directory isn't found, we make it also do so if the global template isn't found
			home_dir()
				.map(|path| path.join(".bonnie").join("template.toml"))
				.and_then(|path| if path.exists() { Some(path) } else { None })
		}
	}
}

// Gets the default template, from `BONNIE_TEMPLATE`, the global file, or the pre-programmed default
pub fn get_default_template() -> Result<String, String> {
	let path = get_template_path();
	if let Some(path) = path {
		let template = fs::read_to_string(path);
		match template {
            Ok(template) => Ok(template),
            Err(err) => Err(format!("Failed to get default template file. Please make sure any path in 'BONNIE_TEMPLATE' definitely exists. Error was '{}'.", err))
        }
	} else {
		// If no template files exist, use the pre-programmed default instead
		Ok(get_inbuilt_default_template())
	}
}