use std::fs;

use crate::utils::parser::{self, env::get_install_env};
use crate::utils::shell::{run_install_script,run_install_script_hook};
use super::download::download;

pub fn patch(repo: &String, pkgname: &String) {
    let src_dir = &crate::commands::get_aeropkg_base().join("src").join(pkgname);
    let pkg_md_path = &crate::commands::get_aeropkg_var().join(format!("{}/{}.md", repo, pkgname));
    let patch_script = &parser::get_patch_script(pkg_md_path).unwrap_or("".to_string());

    if src_dir.join("aeropkg.applied-patch").exists() {
        let src_patch = &fs::read_to_string(src_dir.join("aeropkg.applied-patch")).unwrap_or("".to_string());
        if patch_script == src_patch { return }
        else if src_patch != "" {
            fs::remove_dir_all(src_dir).unwrap();
            download(repo, pkgname)
        }
    }

    let full_env = get_install_env(repo, pkgname, pkg_md_path, "patch");
    run_install_script(patch_script, src_dir, &full_env);
    run_install_script_hook(repo, "patch", &full_env);
    fs::write(src_dir.join("aeropkg.applied-patch"), &patch_script).unwrap()
}