#!/bin/bash

#####################################################################
# ks-upa (ks-tools) - Upload audio file(s) to server with rsync+ssh #
# Date: 25-03-2021                                                  #
# Author: q3aql                                                     #
# Contact: q3aql@protonmail.ch                                      #
#####################################################################
VERSION="7.0"
M_DATE="250321"

# Global parameters.
dirTemp="/tmp"
listCompTemp="ks-tools.list-full"
listCompTempTest="ks-tools.list-full.test"
listTemp="ks-tools.list"
dirConfig="$HOME/.ks-tools"
ksToolsTempFolder="/tmp/ks-tools"

# Function to remove spaces and symbols
# Syntax: convertText "<text>"
function convertText() {
	wordToConvert=${1}
	ksToolsSedFile="${ksToolsTempFolder}/ks-tools-${RANDOM}.txt"
	mkdir -p ${ksToolsTempFolder} && chmod 777 -R ${ksToolsTempFolder} 2> /dev/null
	echo "${wordToConvert}" > ${ksToolsSedFile}
	# Borrar espacios
	sed -i 's/ /_/g' "${ksToolsSedFile}" &> /dev/null
	# Borrar simbolos
	symbolsList="[ ] @ { } | \ / ~ # $ % & ? ¿ = ( ) < > ! ¡"
	for findSymbol in ${symbolsList} ; do
		sed -i "s/${findSymbol}//g" "${ksToolsSedFile}" &> /dev/null
	done
	# Borrar el resto de simbolos
	sed -i 's/*//g' "${ksToolsSedFile}" &> /dev/null
	sed -i 's/"//g' "${ksToolsSedFile}" &> /dev/null
	sed -i "s/^//g" "${ksToolsSedFile}" &> /dev/null
	# Cambiar algunos simbolos
	sed -i 's/+/_/g' "${ksToolsSedFile}" &> /dev/null
	sed -i 's/:/-/g' "${ksToolsSedFile}" &> /dev/null
	sed -i 's/;/-/g' "${ksToolsSedFile}" &> /dev/null
	# Mostrar texto convertido
	wordToConvert=$(cat ${ksToolsSedFile})
	echo ${wordToConvert}
}

# Function to list the files of a directory.
# Syntax: listArchives <directory>
function listArchives() {
	fail=1
	formatFiles="mp3 wma ogg wav flac midi acc oga opus mp2 ra m4a mka"
	# Rename files
	cd "${1}"
	mkdir -p ${ksToolsTempFolder}
	ls -1 > ${ksToolsTempFolder}/rename-files.txt
	count=1
	sizeFile=$(cat ${ksToolsTempFolder}/rename-files.txt | wc -l)
	while [ ${count} -le ${sizeFile} ] ; do
		fileToRename=$(cat ${ksToolsTempFolder}/rename-files.txt | head -${count} | tail -1)
		fileRenamed=$(convertText "${fileToRename}")
		if [ "${fileRenamed}" == "${fileToRename}" ] ; then
			echo "null" > /dev/null
		else
			mv "${fileToRename}" "${fileRenamed}"
		fi
		count=$(expr $count + 1)
	done
	# Scan audio files
	rm -rf ${dirTemp}/${listTemp}
	rm -rf ${dirTemp}/${listCompTemp}
	for format in ${formatFiles} ; do
		find "${1}"/*.${format} &> ${dirTemp}/${listCompTempTest}
		if [ $? -ne 0 ] ; then
			echo "null" > /dev/null
		else
			find "${1}"/*.${format} &>> ${dirTemp}/${listCompTemp}
			echo "+ Audio file(s) in .${format} found!"
			cd "${1}" && ls -1 *.${format} &>> ${dirTemp}/${listTemp}
			fail=0
		fi
	done
	if [ ${fail} -eq 1 ] ; then
		echo "+ No audio file(s) found!"
		echo ""
		exit
	else
		echo ""
	fi
}

# Function to count the found files.
function countArchives() {
	totalArchives=$(cat ${dirTemp}/${listCompTemp} | wc -l)
	echo ${totalArchives}
}

# Function to show files with spaces.
# Syntax: showFileWithSpace <file number>
function showFileWithSpace() {
	FileName=$(cat ${dirTemp}/${listTemp} | head -${1} | tail -1)
	FileNoExtension=$(echo $FileName | cut -d "." -f 1)
	echo $FileNoExtension > ${dirTemp}/name.tmp
	sed -i 's/_/ /g' ${dirTemp}/name.tmp
	DisplayName=$(cat ${dirTemp}/name.tmp)
	rm -rf ${dirTemp}/name.tmp
	echo ${DisplayName}
}

# Function to show the name of the file.
# Syntax: showFile <file number>
function showFile() {
	archive=$(cat ${dirTemp}/${listTemp} | head -${1} | tail -1)
	echo ${archive}
}

# Function to show full file path.
# Syntax: showPathFile <file number>
function showPathFile() {
	pathFile=$(cat ${dirTemp}/${listCompTemp} | head -${1} | tail -1)
	echo ${pathFile}
}

# Function to send file to server.
# Syntax: sendFile <password> <file path> <user> <server> <server path> [file name]
function sendFile() {
	correct=0
	countSend=0
	while [ ${correct} -eq 0 ] ; do
		#sshpass -p ${1} scp ${2} ${3}@${4}:${5} &> /dev/null
		comandOne="sshpass -p ${1} rsync -azL -e"
		comandTwo="--progress ${2} ${3}@${4}:${5}"
		${comandOne} "ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null" ${comandTwo} 2> /dev/null
		sshpass -p ${1} ssh ${3}@${4} rm -rf ${5}/.${6}.* &> /dev/null
		OUTPUT=$?
		if [ ${OUTPUT} -ne 0 ] ; then
			echo "Failure to send ${2}"
			echo "Retrying..."
			sshpass -p ${1} ssh ${3}@${4} rm -rf ${5}/.${6}.* &> /dev/null
			sleep 5
			countSend=$(expr ${countSend} + 1)
			if [ ${countSend} -eq 5 ] ; then
				correct=1
			fi
		else
			correct=1
		fi
	done
}

# Function to check local and server checksum.
# Syntax: checkChecksum <password> <local file path> <user> <server> <server file path>
function checkChecksum() {
	correct=0
	countChecksum=0
	echo -n "Checking checksum... " && sleep 4
	echo ""
	while [ ${correct} -eq 0 ] ; do
		checksumServer=$(sshpass -p ${1} ssh ${3}@${4} md5sum ${5} 2> /dev/null)
		OUTPUT=$?
		if [ ${OUTPUT} -ne 0 ] ; then
			echo "Failed to get checksum for ${5}"
			echo "Retrying..."
			sleep 5
			countChecksum=$(expr ${countChecksum} + 1)
			if [ ${countChecksum} -eq 5 ] ; then
				correct=1
			fi
		else
			checksumLocal=$(md5sum ${2})
			echo "Local checksum: $checksumLocal"
			echo "Server checksum: $checksumServer"
			correct=1
		fi
	done
}

# Function to show config
function showConfig() {
	configAvailable=0
	echo ""
	echo "* ks-upa (ks-tools) v${VERSION} (${M_DATE})"
	echo ""
	if [ -f ${dirConfig}/USER ] ; then
		showUser=$(cat ${dirConfig}/USER)
		echo "- Server User: ${showUser}"
		configAvailable=1
	fi
	if [ -f ${dirConfig}/PASS ] ; then
		showPassword=$(cat ${dirConfig}/PASS)
		echo "- Server Password: ${showPassword}"
		configAvailable=1
	fi
	if [ -f ${dirConfig}/SERVER ] ; then
		showServer=$(cat ${dirConfig}/SERVER)
		echo "- URL (or IP) Server: ${showServer}"
		configAvailable=1
	fi
	if [ -f ${dirConfig}/DIR_SERVER ] ; then
		showDirServer=$(cat ${dirConfig}/DIR_SERVER)
		echo "- Destination Path (Server): ${showDirServer}"
		configAvailable=1
	fi
	if [ -f ${dirConfig}/DIR ] ; then
		showDirLocal=$(cat ${dirConfig}/DIR)
		echo "- Scan Path (Local): ${showDirLocal}"
		configAvailable=1
	fi
	if [ ${configAvailable} -eq 0 ] ; then
		echo "* The configuration file does not exist!"
	fi
	echo ""
	exit
}

# Function to edit the configuration file
function editConfig() {
	editConfig=0
	while [ ${editConfig} -eq 0 ] ; do
		clear
		editUser=$(cat ${dirConfig}/USER 2> /dev/null)
		editPassword=$(cat ${dirConfig}/PASS 2> /dev/null)
		editServer=$(cat ${dirConfig}/SERVER 2> /dev/null)
		editDirServer=$(cat ${dirConfig}/DIR_SERVER 2> /dev/null)
		editDirLocal=$(cat ${dirConfig}/DIR 2> /dev/null)
		echo ""
		echo "* ks-upa (ks-tools) v${VERSION} (${M_DATE})"
		echo ""
		echo " 1 - Edit User (${editUser})"
		echo " 2 - Edit Password (${editPassword})"
		echo " 3 - Edit Server (${editServer})"
		echo " 4 - Edit Dest. Path (${editDirServer})"
		echo " 5 - Edit Local Path (${editDirLocal})"
		echo ""
		echo " 6 - Exit"
		echo ""
		echo -n "* Choose an option: " ; read EDIT
		echo ""
		if [ "${EDIT}" == "1" ] ; then
			echo -n "* Enter the server user: " ; read USER
			user=${USER}
			echo ${user} > ${dirConfig}/USER
		elif [ "${EDIT}" == "2" ] ; then
			echo -n "* Enter the server key: " ; read PASS
			password=${PASS}
			echo ${password} > ${dirConfig}/PASS
		elif [ "${EDIT}" == "3" ] ; then
			echo -n "* Enter the server URL: " ; read SERVER
			server=${SERVER}
			echo ${server} > ${dirConfig}/SERVER
		elif [ "${EDIT}" == "4" ] ; then
			echo -n "* Enter the path on the server: " ; read DIR_SERVER
			dirServer=${DIR_SERVER}
			echo ${dirServer} > ${dirConfig}/DIR_SERVER
		elif [ "${EDIT}" == "5" ] ; then
			echo -n "* Enter the local path to scan: " ; read DIR
			dirLocal=${DIR}
			echo ${dirLocal} > ${dirConfig}/DIR
		elif [ "${EDIT}" == "6" ] ; then
			editConfig=1
		else
			echo "+ Invalid option!"
			echo -n "- Press ENTER to continue " ; read CONTINUE
		fi
	done
	exit
}

# Function to show version
function showVersion() {
	echo ""
	echo "* ks-upa (ks-tools) v${VERSION} (${M_DATE})"
	echo ""
	exit
}

# Function to show help
function showHelp() {
	echo ""
	echo "* ks-upa (ks-tools) v${VERSION} (${M_DATE})"
	echo ""
	echo "- Upload audio file(s) to server with rsync+ssh"
	echo ""
	echo "+ Syntax:"
	echo ""
	echo " $ ks-upa -i  - Start upload"
	echo " $ ks-upa -r  - Remove configuration"
	echo " $ ks-upa -c  - Show configuration"
	echo " $ ks-upa -e  - Edit configuration"
	echo " $ ks-upa -v  - Show version"
	echo " $ ks-upa -h  - Show help"
	echo ""
	exit
}

# Function to check if all the necessary tools
# for the execution are installed.
function checkDependencies() {
	dependence=0
	echo -n "* Checking necessary tools... "
	sleep 3 && echo ""
	sshpass -h &> /dev/null
	OUTPUT=$?
	if [ ${OUTPUT} -ne 0 ] ; then
		echo "* The 'sshpass' tool is not installed!"
		dependence=1
	fi
	md5sum --help &> /dev/null
	OUTPUT=$?
	if [ ${OUTPUT} -ne 0 ] ; then
		echo "* The 'md5sum' tool is not installed!"
		dependence=1
	fi
	rsync --version &> /dev/null
	OUTPUT=$?
	if [ ${OUTPUT} -ne 0 ] ; then
		echo "* The 'rsync' tool is not installed!"
		dependence=1
	fi
	if [ -f /usr/bin/scp ] ; then
		echo "OK" > /dev/null
	else
		echo "* The 'scp' tool is not installed!"
		dependence=1
	fi
	if [ -f /usr/bin/ssh ] ; then
		echo "OK" > /dev/null
	else
		echo "* The 'ssh' tool is not installed!"
		dependence=1
	fi
	if [ ${dependence} -eq 0 ] ; then
		echo "* Necessary tools installed!"
		echo ""
	else
		echo ""
		exit
	fi
}

# Check if the configuration directory exists.
if [ -d ${dirConfig} ] ; then
	echo ${dirConfig} > /dev/null
else
	mkdir -p ${dirConfig}
fi

# Delete the existing configuration.
if [ "$1" == "-r" ] ; then
	rm -rf ${dirConfig}/USER
	rm -rf ${dirConfig}/PASS
	rm -rf ${dirConfig}/SERVER
	rm -rf ${dirConfig}/DIR_SERVER
	rm -rf ${dirConfig}/DIR
	exit
fi

# Show configuration file
if [ "$1" == "-c" ] ; then
	showConfig
	# Show configuration file
elif [ "$1" == "-e" ] ; then
	editConfig
	# Show the version
elif [ "$1" == "-v" ] ; then
	showVersion
	# Show the help
elif [ "$1" == "-h" ] ; then
	showHelp
	# Init
elif [ "$1" == "-i" ] ; then
	# Start script
	clear
	echo ""
	echo "* ks-upa (ks-tools) v${VERSION} (${M_DATE})"
	echo ""
	checkDependencies
	# Ask the user and if it exists, read it from the config.
	if [ -f ${dirConfig}/USER ] ; then
		user=$(cat ${dirConfig}/USER)
	else
		echo -n "* Enter the server user: " ; read USER
		user=${USER}
		echo ${user} > ${dirConfig}/USER
	fi
	# Ask the password and if it exists, read it from the config.
	if [ -f ${dirConfig}/PASS ] ; then
		password=$(cat ${dirConfig}/PASS)
	else
		echo -n "* Enter the server key: " ; read PASS
		password=${PASS}
		echo ${password} > ${dirConfig}/PASS
	fi
	# Ask the server URL and if it exists, read it from the config.
	if [ -f ${dirConfig}/SERVER ] ; then
		server=$(cat ${dirConfig}/SERVER)
	else
		echo -n "* Enter the server URL: " ; read SERVER
		server=${SERVER}
		echo ${server} > ${dirConfig}/SERVER
	fi
	# Ask the path on the server and if it exists, read it from the config.
	if [ -f ${dirConfig}/DIR_SERVER ] ; then
		dirServer=$(cat ${dirConfig}/DIR_SERVER)
	else
		echo -n "* Enter the path on the server: " ; read DIR_SERVER
		dirServer=${DIR_SERVER}
		echo ${dirServer} > ${dirConfig}/DIR_SERVER
	fi
	# Ask the local path and if it exists, read it from the config.
	if [ -f ${dirConfig}/DIR ] ; then
		dirLocal=$(cat ${dirConfig}/DIR)
	else
		echo -n "* Enter the local path to scan: " ; read DIR
		dirLocal=${DIR}
		echo ${dirLocal} > ${dirConfig}/DIR
	fi

	# Call the functions to perform the whole process.
	echo -n "* Scanning ${dirLocal} " && sleep 4
	echo ""
	if [ -d ${dirLocal} ] ; then
		listArchives "${dirLocal}"
		totalFiles=$(countArchives)
		count=1
		echo "+ ${totalFiles} audio file(s) found!"
		echo ""
		while [ ${count} -le ${totalFiles} ] ; do
			fullNameFile=$(showFile ${count})
			fullPathFile=$(showPathFile ${count})
			echo "Uploading '${fullNameFile}' "
			sendFile ${password} ${fullPathFile} ${user} ${server} ${dirServer} ${fullNameFile}
			checkChecksum ${password} ${fullPathFile} ${user} ${server} ${dirServer}/${fullNameFile}
			echo ""
			count=$(expr ${count} + 1)
		done
	else
		echo "* Directory ${dirLocal} does not exist!"
		echo ""
		exit
	fi
	# Show help
else
	showHelp
fi