use anyhow::Result;
use clap::Parser;
use std::path::Path;

use crate::{
    git_fs::{gitignore::expands_and_filter_path, index::Index, normalize_path_in_worktree},
    subcommands::hash_object::HashObjectSubcommand,
};

use super::Subcommand;

#[derive(Parser, Debug)]
pub struct AddSubcommand {
    pub paths: Vec<String>,
}

impl Subcommand for AddSubcommand {
    fn run(&self) -> Result<String> {
        if self.paths.is_empty() {
            return Ok(String::from("Nothing specified, nothing added"));
        }

        let mut index = Index::load()?;

        for path in self.paths.iter().map(|p| Path::new(p).to_path_buf()) {
            let expanded = expands_and_filter_path(path)?;
            for p in expanded {
                println!("Adding {}", p.display());
                let path_str = String::from(p.to_str().unwrap());
                let name = String::from(normalize_path_in_worktree(&p)?.to_str().unwrap());
                println!("adding {}", name);
                let hash = HashObjectSubcommand {
                    write: true,
                    path: path_str,
                }
                .run_raw()?;
                index.add_file(name, hash)?;
            }
        }

        index.save()?;

        Ok(String::from(""))
    }
}