use std::path::Path;

use actix_web::web;
use actix_web_httpauth::extractors::basic;

use actix_web::get;
use askama_actix::Template;
use serde::Deserialize;


use crate::error;
use crate::git::GitBrowseEntry;
use crate::gitust::Gitust;
use crate::gitutils::gitcommit::GitRef;
use crate::gitutils::gitdir::GitDir;
use crate::gitutils::gitfile::GitFile;
use crate::gitutils::gitrepo::GitRepo;
use crate::ite::SuperIterator;

struct User {
    name : String,
}

struct Owner {
    name : String,
}

struct Repository {
    name : String,
    owner : Owner,
}

pub enum Entry {
    Dir(String),
    File(String),
}

#[derive(Template)]
#[template(path = "git.html")]
pub struct GitMainTemplate<TS, ROOT>
where for <'a> &'a TS : IntoIterator<Item = &'a Entry>,
      for <'a> &'a ROOT : IntoIterator<Item = &'a (String, String)>,
{
    repo : Repository,
    browse : TS,
    root : ROOT,
    user_opt : Option<User>,
}


#[derive(Deserialize)]
pub struct GitWebQ {
    commit: Option<String>,
    path: Option<String>,
    branch: Option<String>,
}

#[get("/git/{owner}/{repo}.git")]
pub async fn git_main(
    web::Path((ownername, reponame)): web::Path<(String, String)>,
    web::Query(GitWebQ{commit : commitnameopt, path : pathopt, branch : branchopt}) : web::Query<GitWebQ>,
    gitust : web::Data<Gitust>,
    auth : Option<basic::BasicAuth>,
    //auth : BasicAuth,
) -> Result<GitMainTemplate<Vec<Entry>, Vec<(String, String)>>, error::Error> {
    // let authtorization = auth.ok_or(error::Error::Unauthorized("safe repo".to_string()))?;
    let rootname = match pathopt {
        None => {"".to_string()}
        Some(s) => {
            if s.starts_with("/") {
                (&s[1..]).to_string()
            } else {
                s
            }
        }
    };
    let commit = match commitnameopt {
        None => {match branchopt {
            None => {GitRef::Head}
            Some(s) => {GitRef::Branch(s)}
        }}
        Some(s) => {GitRef::Commit(s)}
    };
    let owner = Owner { name : ownername};
    let repo = Repository {name : reponame, owner};
    // let user = User { name : "Hubert".to_string()};
    let user = auth.map(|auth| User{name : auth.user_id().to_string()});
    // il faut ajouter le commit/branch dans la query
    let path = rootname.split("/").map_accum("/git/".to_string() + &repo.owner.name + "/" + &repo.name, |str_ref, b| {
        let href = b + "/" + str_ref;
        ((str_ref.to_string(), href.clone()), href)
    }).collect();
    let gitrepo = GitRepo::new(format!("{}/{}/{}.git", &gitust.repo_root_path, &repo.owner.name, &repo.name).as_str())?;
    let root = gitrepo.get_tree(&commit, Path::new(rootname.as_str()))?;
    let browse = gitrepo.browse(&root).await?;
    let mut entries : Vec<Entry> = Vec::new();
    for entry in browse {
        match entry {
            GitBrowseEntry::EGitFile(GitFile(fullname)) => {
                let osstr = fullname.file_name().ok_or(git2::Error::from_str("file name not defined"))?;
                entries.push(Entry::File(format!("{}",osstr.to_string_lossy())));
            }
            GitBrowseEntry::EGitDir(GitDir{fullname, .. }) => {
                let osstr = fullname.file_name().ok_or(git2::Error::from_str("file name not defined"))?;
                entries.push(Entry::Dir(format!("{}",osstr.to_string_lossy())));
            }
        }
    }
    Ok(GitMainTemplate { repo, browse : entries, root : path, user_opt : user})
}