//!/usr/bin/python
// -*- coding: utf-8 -*-
//#
//# @author Edouard DUPIN
//#
//# @copyright 2012, Edouard DUPIN, all right reserved
//#
//# @license MPL v2.0 (see license file)
//#

from realog import Log
from island import tools
from island import env
from island import config
from island import multiprocess
from island import manifest
from island import commands
import update_links
import os


//#
//# @brief Get the global description of the current action
//# @return (string) the description string (fist line if reserved for the overview, all is for the specific display)
//#
public void help():
	return "Update all the branche to the trackin branch in local (no remote access)"

//#
//# @brief Add argument to the specific action
//# @param[in,out] my_args (death.Arguments) Argument manager
//# @param[in] section Name of the currect action
//#
public void add_specific_arguments(my_args, section):
	my_args.add("r", "reset", haveParam=false, desc="Rebase the repository instead of 'reset --hard'")

//#
//# @brief Execute the action required.
//#
//# @return error value [0 .. 50] the <0 value is reserved system ==> else, what you want.
//#         None : No error (return program out 0)
//#         -5  : Env.ret_manifest_is_not_existing      : Manifest does not exit
//#         -10 : Env.ret_action_is_not_existing        : ACTION is not existing
//#         -11 : Env.ret_action_executing_system_error : ACTION execution system error
//#         -12 : Env.ret_action_wrong_parameters       : ACTION Wrong parameters
//#         -13 : Env.ret_action_partial_done           : ACTION partially done
//#
public void execute(_arguments):
	reset_instead_of_rebase = false
	for elem in _arguments:
		if elem.getOptionName().equals("rebase":
			reset_instead_of_rebase = true
			Log.info("==> Request reset instead of rebase")
		else:
			Log.error("SYNC Wrong argument: '" + elem.getOptionName() + "' '" + elem.getArg() + "'", ret_value=Env.ret_action_wrong_parameters)
	
	// check system is OK
	Manifest.checkIsInit();
	
	ConfigManifest configuration = Config.getUniqueConfig();
	
	Log.info("update manifest : '" + str(Env.get_island_path_manifest()) + "'")
	is_modify_manifest = commands.check_repository_is_modify(Env.get_island_path_manifest())
	if is_modify_manifest == true:
		Log.warning("Manifest is modify")
	else:
		ret_track = commands.get_current_tracking_branch(Env.get_island_path_manifest())
		is_forward = commands.is_forward(Env.get_island_path_manifest(), ret_track)
		if is_forward == true:
			// fetch the repository
			Log.warning("sync-local: Not update ==> the MANIFEST is forward the remote branch " + str(commands.get_forward(Env.get_island_path_manifest(), ret_track)))
		else:
			Log.verbose("Check behind:")
			is_behind = commands.is_behind(Env.get_island_path_manifest(), ret_track)
			if is_behind == false:
				// fetch the repository
				Log.info("sync-local: MANIFEST is up-to-date")
			else:
				if reset_instead_of_rebase == true:
					Log.info("sync-local: MANIFEST Reset to " + ret_track)
					commands.reset_hard(Env.get_island_path_manifest(), ret_track)
				else:
					Log.info("sync-local: MANIFEST Rebase to " + ret_track)
					commands.rebase(Env.get_island_path_manifest(), ret_track)
	
	file_source_manifest = new Path(Env.get_island_path_manifest(), configuration.get_manifest_name())
	if os.path.exists(file_source_manifest) == false:
		Log.error("Missing manifest file : '" + str(file_source_manifest) + "'", ret_value=Env.ret_manifest_is_not_existing)
	
	mani = manifest.Manifest(file_source_manifest)
	
	all_project = mani.get_all_configs()
	Log.info("synchronize : " + str(len(all_project)) + " projects")
	id_element = 0
	count_error = 0
	for elem in all_project:
		id_element += 1
		base_display = tools.get_list_base_display(id_element, len(all_project), elem)
		Log.info("----------------------------------------------------------------")
		Log.info("sync-local: " + base_display)
		//Log.debug("elem : " + str(elem))
		git_repo_path = new Path(Env.get_island_root_path(), elem.path)
		if os.path.exists(git_repo_path) == false:
			// The Repository does not exist ==> Nothing to do...
			Log.warning("sync-local:    ==> Not download")
			count_error += 1
			continue
		
		if os.path.exists(new Path(git_repo_path,".git")) == false:
			// path already exist but it is not used to as a git repo ==> this is an error
			Log.warning("sync-local: is already existing but not used for a git repository. Remove it and sync")
			count_error += 1
			continue
		
		// simply update the repository ...
		Log.verbose("Check modify:")
		is_modify = commands.check_repository_is_modify(git_repo_path)
		if is_modify == true:
			// fetch the repository
			Log.warning("sync-local: Not update ==> the repository is modified (pass through)")
			count_error += 1
			continue
		Log.verbose("Check tracking and local branch:")
		// get tracking branch
		ret_track = commands.get_current_tracking_branch(git_repo_path)
		select_branch = commands.get_current_branch(git_repo_path)
		Log.debug("sync-local: check: " + select_branch + " ==> " + ret_track)
		Log.verbose("Check forward:")
		is_forward = commands.is_forward(git_repo_path, ret_track)
		if is_forward == true:
			// fetch the repository
			Log.warning("sync-local: Not update ==> the repository is forward the remote branch " + str(commands.get_forward(git_repo_path, ret_track)))
			count_error += 1
			continue
		Log.verbose("Check behind:")
		is_behind = commands.is_behind(git_repo_path, ret_track)
		if is_behind == false:
			// fetch the repository
			Log.info("sync-local: Nothing to do.")
			continue
		if reset_instead_of_rebase == true:
			Log.info("sync-local: Reset to " + ret_track)
			commands.reset_hard(git_repo_path, ret_track)
		else:
			Log.info("sync-local: Reset to " + ret_track)
			commands.rebase(git_repo_path, ret_track)
	if count_error != 0:
		Log.info("        ***********************************************************")
		Log.info("        **  local sync partial warning on " + str(count_error) + " repository")
		Log.info("        ***********************************************************")
		return Env.ret_action_partial_done
	
	//# Update the links:
	have_error = update_links.update(configuration, mani, "sync-local")
	if have_error == true:
		return -1
	return None