.bashrc.greenvenv

#!/bin/bash

function greenvenv_loadconsts()
{
	# Terminal colors
GREENVENV_CLR_BLACK=$(tput setaf 0)
GREENVENV_CLR_RED=$(tput setaf 1)
GREENVENV_CLR_GREEN=$(tput setaf 2)
GREENVENV_CLR_YELLOW=$(tput setaf 3)
GREENVENV_CLR_LIME_YELLOW=$(tput setaf 190)
GREENVENV_CLR_POWDER_BLUE=$(tput setaf 153)
GREENVENV_CLR_BLUE=$(tput setaf 4)
GREENVENV_CLR_MAGENTA=$(tput setaf 5)
GREENVENV_CLR_CYAN=$(tput setaf 6)
GREENVENV_CLR_WHITE=$(tput setaf 7)
GREENVENV_CLR_BRIGHT=$(tput bold)
GREENVENV_CLR_NORMAL=$(tput sgr0)
GREENVENV_CLR_BLINK=$(tput blink)
GREENVENV_CLR_REVERSE=$(tput smso)
GREENVENV_CLR_UNDERLINE=$(tput smul)
GREENVENV_CLR_BOLD=$(tput bold)
GREENVENV_TXT_INDEXING='When you could not found what you are looking for you might to update index: "sudo updatedb" '
GREENVENV_TXT_BYE="Bye!"
}
# Prints a line with color using terminal codes
function greenvenv_print()
{
  printf "%s\n" "${!2}$1${GREENVENV_CLR_NORMAL}"

}

function greenvenv_find()
{
echo ""
}

function greenvenv_cleanup()
{
	for var in "${!GREENVENV_@}"; do
    unset ${var}
done

}

function rebuild()
{
	greenvenv_loadconsts
	echo $VIRTUAL_ENV
	if [ ! "$(type -t deactivate)" = "function" ]; then
		greenvenv_print 'Are you sure you properly activated the env?' GREENVENV_CLR_RED
		return
	fi
	greenvenv_venvpath=$VIRTUAL_ENV
	greenvenv_temp="tmp-requirements-$(echo $VIRTUAL_ENV | sed -e 's/[^A-Za-z0-9._-]/-/g').txt"
	echo $greenvenv_temp
	# first we remove to be sure that it is really new result
	#rm $greenvenv_temp
	$greenvenv_venvpath/bin/python -m pip freeze > $greenvenv_temp
	if [[  -z $greenvenv_temp ]]; then
		greenvenv_print 'Something did not work. Requirements not found or you installed nothing.' GREENVENV_CLR_RED
		
		return
	fi
	deactivate
	echo $greenvenv_venvpath
	echo "SOOORRY here we need to some work for the future, to let you create a venv"
	return
	mv $greenvenv_venvpath "${greenvenv_venvpath}.backup"
	#virtualenv -p python3 name
	#python3 -m venv /path/to/new/virtual/environment
	pip install -r /tmp/requirements.txt
	rm $greenvenv_temp
}

function greenvenv()
{
	# Get the options
	TEMP=$(getopt  :hiar "$@")
	eval set -- "$TEMP"
	while true ; do
	   case "$1" in
	      -h)
			echo "You will get help here in the future"
			break
			;;
	      -i)
			echo "Start reindexing for a better search"
			 updatedb
			 break
			;;
	      -r)
			echo "Start rebuilding the env: 1 rename -> 2 new with same name $2"
			 rebuild
			 break
			;;
	     -a)
			echo "This are the aliases (only correct after activate venv)"
			greenvenv_loadconsts
			greenvenv_loadalias
			break
			;;
	      *)
			echo "Nothing done for $1 $option"	
			break ;;	
			
		--) shift ; break ;;
	esac
	 
	done

	
}

function chenv()
{
	greenvenv_loadconsts
#locate bases on a database which is daily updated. to manually update: sudo updatedb
files=(`locate --regex "bin/activate"$ | sed 's/bin\/activate$//'`)

PS3='Select a env to activate, or 0 to exit: '
select file in "${files[@]}"; do
	if [[ $REPLY == "0" ]]; then
		greenvenv_print $GREENVENV_TXT_INDEXING GREENVENV_CLR_YELLOW
		echo $GREENVENV_TXT_BYE
		break
	elif [[ -z $file ]]; then
		greenvenv_print $GREENVENV_TXT_INDEXING GREENVENV_CLR_YELLOW
		greenvenv_print 'Invalid choice, try again' GREENVENV_CLR_RED
		break
	else
		echo 'Deactivate current env..' 
		deactivate
		greenvenv_print 'Activate choosen environment.. Enjoy' GREENVENV_CLR_GREEN
		source "${file}bin/activate"
		break
	fi
done
greenvenv_cleanup
}


function greenvenv_loadalias
{
	 declare -A aliase

	alias_restart="python ${file}manage.py makemigrations && python ${file}manage.py migrate && python ${file}manage.py collectstatic --no-input"
	if [[ ! -z "$cmd_restart" ]]; then
		alias_restart+=" && ${cmd_restart}"
		
		if [[ ! -z "$cmd_restart_beep" ]]; then 
			alias_restart+=' && echo -e "\07" && echo -e "\007" '
		fi
	fi
	aliase=( ['collectstatic']="python ${file}manage.py collectstatic --no-input" ['restart']="${alias_restart}" ['requirements']="pip3 freeze > ${file}requirements.txt")

	#parse aliases from the file pyvenv.cfg
	while IFS= read -r  words; do                
	words="${words:6}"
	temp="${words#*=}"
	temp="${temp%\"}"
	temp="${temp#\"}"
	aliase["${words%%=*}"]="${temp}"
	done < <(cat ${venv_cfg_filepath} | awk -F= '/^alias (.*)/{print $0}')

	for cmd in "${!aliase[@]}"; do
		echo "- Alias '${GREENVENV_CLR_BOLD}$cmd${GREENVENV_CLR_NORMAL}': \"${aliase[$cmd]}\""
		alias $cmd="${aliase[$cmd]}"
	done
	echo "- More Aliases you can register directly in the pyvenv"
}

function chdjango()
{
	greenvenv_loadconsts

#locate bases on a database which is daily updated. to manually update: sudo updatedb
files=(`locate --regex "/home/.*/manage.py"$ | sed 's/manage.py$//'`)
PS3='Select a django project, or 0 to exit: '
select file in "${files[@]}"; do
	echo ""
	if [[ $REPLY == "0" ]]; then
		greenvenv_print $GREENVENV_TXT_INDEXING GREENVENV_CLR_YELLOW
		echo $GREENVENV_TXT_BYE
		break
	elif [[ -z $file ]]; then
		greenvenv_print $GREENVENV_TXT_INDEXING GREENVENV_CLR_YELLOW
		greenvenv_print 'Invalid choice, try again' GREENVENV_CLR_RED
		break
	else
		#change to the directory of the project
		cd "${file}"

		#based on https://stackoverflow.com/questions/45216663/how-to-automatically-activate-virtualenvs-when-cding-into-a-directory
		venv_cfg_filepath=$(find . -maxdepth 2 -type f -name 'pyvenv.cfg' 2> /dev/null)
		if [[ -z "$venv_cfg_filepath" ]]; then
			greenvenv_print "no config file found. Please locate pyvenv.cfg in the same directory" GREENVENV_CLR_RED
			return # no config file found
		fi

		source ${venv_cfg_filepath}
		
		#echo "config file found $venv_cfg_filepath and the path to the env -$venv_filepath<"
		if [ -d "$venv" ]; then
			if [[ ! -z "$VIRTUAL_ENV" ]]; then
			
			[ "$(type -t deactivate)" = "function" ] && echo "- Deactivate current one" && deactivate nondestructive
			fi
			greenvenv_print "- Activate $venv" GREENVENV_CLR_GREEN
			
			source "${venv}"/bin/activate

			greenvenv_loadalias

		else
			greenvenv_print "$venv is not a directory or readable ${venv_cfg_filepath}" GREENVENV_CLR_RED
		fi
		
		break
	fi
done
greenvenv_cleanup
}