// valac -o /tmp/ggit Git.vala --pkg libgit2-glib-1.0 --pkg libsoup-2.4 -pkg gee-0.8 -g



void main()
{
	 GLib.Log.set_handler(null, 
            GLib.LogLevelFlags.LEVEL_DEBUG | GLib.LogLevelFlags.LEVEL_WARNING | GLib.LogLevelFlags.LEVEL_INFO, 
            (dom, lvl, msg) => {
					
					
               // should we debug..
					
      			
               print("%s\n", msg);
            }
         ); 

	Ggit.init();
	
	var a = new GitLive.Repo("/home/alan/gitlive/gitlive");
	a.loadBranches();
	a.fetchAll();
	//
	/*
	var a = new GitLive.Repo("/home/alan/git/test1-clone");
	//a.fetchAll();
	var str = (new GLib.DateTime.now_utc()).format("%Y-%m-%d %H:%M:%S");
	GLib.FileUtils.set_contents("/home/alan/git/test1-clone/test1",  str); 
	
	var ix = a.repo.get_index();
	ix.add_path("test1");
	ix.write();
	var treeoid = ix.write_tree();

	var head = a.repo.get_head();
	var parent = head.lookup() as Ggit.Commit;
	Ggit.Commit[] parents = (parent == null) ? 
		new Ggit.Commit[] {} :
		new Ggit.Commit[] { parent };

	var tree = a.repo.lookup(treeoid,typeof (Ggit.Tree))  as   Ggit.Tree;// odd format.. 
	
	var sig = new Ggit.Signature.now("Alan Knowles", "alan@roojs.com");
	a.repo.create_commit("HEAD", sig, sig, null, "test commit " + str, tree, parents);
	*/
	// mmh.. no git add/commit in library...
//	string[] spawn_args = {"git", "commit", "-m", "test", "-a"};
	//string[] spawn_env = Environ.get ();
//	Process.spawn_sync ("/home/alan/git/test1-clone", spawn_args, spawn_env, SpawnFlags.SEARCH_PATH, null);
 
	a.pushAll();
}
 

namespace  GitLive {

	public class Repo : Object {

		public Ggit.Repository  repo;
		Callbacks callbacks;

		public Repo(string path)
		{
			this.repo = Ggit.Repository.open(GLib.File.new_for_path(path));
			this.callbacks = new Callbacks(this);
		
		}
		
  	    Gee.ArrayList<Ggit.Branch> 		branches = null;
		public void loadBranches()
		{
			this.branches =  new Gee.ArrayList<Ggit.Branch>();
			var r = this.repo.enumerate_branches(Ggit.BranchType.LOCAL);
			
			
			
			
			while (r.next()) {
				var br = r.get() as Ggit.Branch;
				var head = this.repo.revparse("refs/heads/" + br.get_name() ).get_id();
				var rhead = this.repo.revparse(br.get_upstream().get_name() ).get_id();
				GLib.debug("got branch: name = %s upstream = %s oid = %s ", 
						br.get_name(), br.get_upstream().get_name(), 
						head.to_string());
				this.branches.add(br);
				
			}
			
			
		
		}
		Ggit.Branch? getBranch(string remote_name, string remote_branch_name)
		{
			GLib.debug("lookup %s", remote_name);
			foreach(var br in this.branches) {
				GLib.debug("test:%s", br.get_upstream().get_shorthand());
				if ("ref/heads/" + remote_name +  br.get_upstream().get_shorthand() == remote_name) {
					return br;
				}
				
			}
			GLib.debug("missing %s", remote_name);			
			return null;
		
		}
		
		
		
		public void fetchAll()
		{
			// remotes probably will not work with http auth..
			var ar = this.repo.list_remotes();
			foreach(var n in ar) {
				GLib.debug("got remote '%s'", n);
				var r = this.repo.lookup_remote(n);
				GLib.debug("connecting '%s'", r.get_url());
				 
				try {
					string[] h = { "a = 1" };
					r.connect(Ggit.Direction.FETCH, this.callbacks, null, null);
					
				} catch (Error e) {
					GLib.debug("Got Error Message: %s", e.message);
					return;
				}
				
				var heads = r.list();
				foreach(var rh in heads) {
					var br = this.getBranch(n, rh.get_name());
				
					GLib.debug("got heads: name=%s   rev=%s  localrev=%s",
						rh.get_name(), 
						rh.get_oid().to_string(),
						br == null ? "?": this.repo.revparse(br.get_name() ).get_id().to_string()
					);
				
				}
				
				
				
				GLib.debug("getting specs '%s'", n);


				var far = r.get_fetch_specs();
				
				foreach(var rs in far) {
					GLib.debug("got remote spec: %s", rs);
					
				}
				var options = new Ggit.FetchOptions();
				options.set_remote_callbacks(this.callbacks);
				//yield Async.thread(() => {
	
					r.download(far, options);
				//});
				r.disconnect();
				
				//r.download(
			}
		
		}
		
		
		
		public void pushAll()
		{
			// remotes probably will not work with http auth..
			var ar = this.repo.list_remotes();
			foreach(var n in ar) {
				GLib.debug("got remote '%s'", n);
				var r = this.repo.lookup_remote(n);
				GLib.debug("connecting '%s'", r.get_url());
				 
				try {
					string[] h = { "a = 1" };
					 r.connect(Ggit.Direction.PUSH, this.callbacks, null, null);
					
				} catch (Error e) {
					GLib.debug("Got Error Message: %s", e.message);
					return;
				}
				//GLib.debug("getting specs '%s'", n);
				/* 
				
				this.repo.add_remote_push(
					"origin",
					"+%s:%s".printf(head.get_shorthand(),head.get_name())
				);
 */
 				var head = this.repo.get_head();
				string[] far = {};
				far += "+%s:%s".printf(head.get_name(),head.get_name());
				
				foreach(var rs in far) {
					GLib.debug("got remote spec: %s", rs);
					
				}
			 		
				var popts = new Ggit.PushOptions();
				 popts.callbacks = this.callbacks;
				GLib.debug("Push?");
				r.upload(far,popts);
				GLib.debug("Push done?");
				r.disconnect();
				
				
				//r.download(
			}
		
		}
		
		
		

	}
	
	private class Callbacks : Ggit.RemoteCallbacks
	{
		//private Remote d_remote;
		private Ggit.RemoteCallbacks? d_proxy = null;

		public delegate void TransferProgress(Ggit.TransferProgress stats);
		//private TransferProgress? d_transfer_progress;

		public Callbacks( Repo repo)  //, Ggit.RemoteCallbacks? proxy) //,Remote remote, owned TransferProgress? transfer_progress)
		{
			//d_remote = remote;
			//d_proxy = proxy;
			//d_transfer_progress = (owned)transfer_progress;
		}

		protected override void progress(string message)
		{
			GLib.debug("progress");
			if (d_proxy != null)
			{
				d_proxy.progress(message);
			}
		}

		protected override void transfer_progress(Ggit.TransferProgress stats)
		{
			GLib.debug("transfer_progress");
			/*
			if (d_transfer_progress != null)
			{
				d_transfer_progress(stats);
			}

			if (d_proxy != null)
			{
				d_proxy.transfer_progress(stats);
			}
			*/
		}

		protected override void update_tips(string refname, Ggit.OId a, Ggit.OId b)
		{
			GLib.debug("update_tips");
			//d_remote.tip_updated(refname, a, b);

			if (d_proxy != null)
			{
				d_proxy.update_tips(refname, a, b);
			}
		}

		protected override void completion(Ggit.RemoteCompletionType type)
		{
			GLib.debug("completion");
			if (d_proxy != null)
			{
				d_proxy.completion(type);
			}
		}

		protected override Ggit.Cred? credentials(string url, string? username_from_url, Ggit.Credtype allowed_types) throws Error
		{
 
			GLib.debug("get credentials %s  UN=%s", url, username_from_url);
			var uri = new Soup.URI(url);

			if (uri != null) {
				var ret = this.netrc(uri.get_host());
				if (ret != null) {
					return ret;
				}
				
				//return new Ggit.CredPlaintext(username_from_url, "test");
			}
			return null;
			/*var provider = d_remote.credentials_provider;

			if (provider != null)
			{
				ret = provider.credentials(url, username_from_url, allowed_types);
			}

			if (ret == null && d_proxy != null)
			{
				ret = d_proxy.credentials(url, username_from_url, allowed_types);
			}
			
			return ret;
			*/
		}
		public  Ggit.Cred netrc(string domain) 
		{
			string str;
			GLib.FileUtils.get_contents(GLib.Environment.get_home_dir() + "/.netrc", out str);
			var lines = str.split("\n");
			for(var i=0; i< lines.length; i++) {
				// assumes one line per entry.. if not we are buggered...
				//GLib.debug("got %s" , lines[i]);
			
				var bits =  Regex.split_simple ("[ \t]+", lines[i].strip());
				if (bits.length < 6 || bits[0] != "machine" || bits[1] != domain) {
					continue;
				}
				GLib.debug("found password?");
				// we are gussing.... 
				return new Ggit.CredPlaintext(bits[3], bits[5]);

			}
			return null;


		
		
		}
		
	}
	
	

}