use crate::common::{repository, utils, config::{ModToml, Module}};

#[derive(Debug)]
pub struct NamedModule(pub String, pub Module);

impl From<&ModToml> for Vec<NamedModule> {
    fn from(config: &ModToml) -> Self {
        config.modules.iter()
            .map(|v| NamedModule(v.0.clone(), v.1.clone()))
            .collect()
    }
}

impl ToString for NamedModule {
    fn to_string(&self) -> String {
        self.0.clone()
    }
}

fn install_mod(m: &NamedModule) {
    println!("Installing module {}...", m.0);
    'content_iter: for entry in &m.1.content {
        let src = std::path::Path::new("repo").join(&entry.0);
        if src.is_file() {
            if let Err(err) = std::fs::copy(src, entry.1) {
                println!("Failed to copy {}:\n{}", entry.0, err);
            }
        } else {
            let dst = std::path::Path::new(entry.1.as_str());

            if let Err(err) = std::fs::create_dir_all(dst) {
                println!("Failed to create directory {}:\n{}", entry.1, err);
                continue 'content_iter;
            }

            let pb = indicatif::ProgressBar::new(0);
            pb.set_style(indicatif::ProgressStyle::with_template("{spinner} [{wide_bar}] {pos:>6}/{len:6}").unwrap().progress_chars("#>-"));

            if let Err(err) = utils::remove_dir(dst, &m.1.ignore, &pb) {
                println!("Failed to delete directory:\n{}", err);
                continue 'content_iter;
            }

            if let Err(err) = utils::copy_dir(&src, dst, &[], &pb) {
                println!("Failed to copy directory:\n{}", err);
            }
        }
    }
}

fn collect_mod(m: &NamedModule) {
    println!("Collecting module {}...", m.0);
    'content_iter: for entry in &m.1.content {
        let dst = std::path::Path::new("repo").join(entry.0.as_str());
        let src = std::path::Path::new(entry.1.as_str());
        if src.is_file() {
            if let Err(err) = std::fs::copy(src, dst) {
                println!("Failed to copy {}:\n{}", entry.1, err);
            }
        } else {
            let pb = indicatif::ProgressBar::new(0);
            pb.set_style(indicatif::ProgressStyle::with_template("{spinner} [{wide_bar}] {pos:>6}/{len:6}").unwrap().progress_chars("#>-"));

            if let Err(err) = utils::remove_dir(&dst, &[], &pb) {
                println!("Failed to delete directory:\n{}", err);
                continue 'content_iter;
            }

            if let Err(err) = std::fs::create_dir_all(&dst) {
                println!("Failed to create directory {}:\n{}", entry.0, err);
                continue 'content_iter;
            }

            if let Err(err) = utils::copy_dir(src, &dst, &m.1.ignore, &pb) {
                println!("Failed to copy source content:\n{}", err);
                continue 'content_iter;
            }
        }
    }
}

pub fn install(mods: &[NamedModule]) {
    for m in mods {
        install_mod(m);

        if let Some(on_install) = &m.1.on_install {
            match std::process::Command::new("sh").arg("-c").arg(on_install).status() {
                Ok(status) => println!("Install command exited with {status}"),
                Err(err) => println!("Failed to execute on install command '{on_install}' with error:\n{err}")
            }
        }
    }
}

pub fn collect(mods: &[NamedModule]) {
    for m in mods {
        collect_mod(m);
    }
}

pub fn upload<F: FnOnce() -> String>(get_commit_msg: F) {
    if !repository::is_clean() {
        let msg = get_commit_msg();
        if !repository::commit_changes(&msg) {
            println!("Failed to commit");
            return;
        }
    }
    if !repository::push_repo() {
        println!("Failed to push to origin");
    }
}