#!/bin/bash
CACHE_APP=cache/${APP}/
CACHE_STEP1=cache/${DEBIAN_VERSION_CODENAME}
CACHE_STEP2=cache/${APP}/envinit
CACHE_STEP3=cache/${APP}/prebuild
CACHE_STEP4=cache/${APP}/build

#DownloadOs
step1() {
	if [ ! -e ${CACHE_STEP1} ] 
	then 
		mkdir -p ${CACHE_STEP1}/proc
		mount -t proc proc ${CACHE_STEP1}/proc
		sleep 2
		debootstrap ${DEBIAN_VERSION_CODENAME} ${CACHE_STEP1}
		umount ${CACHE_STEP1}/proc
	fi
}

#InstallOs
step2(){
	if [ -e ressources/${APP}/envinit ]; then	
		if [ ! -e ${CACHE_STEP2} ] ; then 
			mkdir -p ${CACHE_APP}
			cp -a ${CACHE_STEP1}/ ${CACHE_STEP2}
			cp ressources/${APP}/envinit ${CACHE_STEP2}/tmp/envinit
			mount -t proc proc ${CACHE_STEP2}/proc
			sleep 2
			chroot ${CACHE_STEP2} /tmp/envinit
			umount ${CACHE_STEP2}/proc
			rm ${CACHE_STEP2}/tmp/envinit
		fi
	fi
}

#ConfigureBeforeBuild
step3(){
	if [ -e ressources/${APP}/prebuild ]; then
		if [ ! -e ${CACHE_STEP3} ]; then
			cp -a ${CACHE_STEP2} ${CACHE_STEP3}
			cp ressources/${APP}/prebuild ${CACHE_STEP3}/tmp/prebuild
			chroot ${CACHE_STEP3} /tmp/prebuild ${GIT_VERSION}
			rm ${CACHE_STEP3}/tmp/prebuild
		fi
	fi
}

#Build
step4(){
	if [ -e ressources/${APP}/build ]; then
		if [ ! -e ${CACHE_STEP4} ] ; then
			cp -a ${CACHE_STEP3} ${CACHE_STEP4}
			cp ressources/${APP}/build ${CACHE_STEP4}/tmp/build
			mount -t proc proc ${CACHE_STEP4}/proc/
			sleep 2
			chroot ${CACHE_STEP4} /tmp/build
			umount ${CACHE_STEP4}/proc/
		fi
	fi
}

#PackageDeb
step5(){
	rm -fr dist/${APP}
	mkdir dist/${APP}
	cp -pfr ressources/${APP}/rootfs/* dist/$APP/
	bash ressources/${APP}/makedeb ${CACHE_STEP4} dist/${APP} ${GIT_VERSION}
	sed -i "s/%VERSION%/$DEB_VERSION/" dist/${APP}/DEBIAN/control
	fakeroot dpkg-deb -Z gzip --build dist/${APP} dist
	rm -fr dist/${APP}
}

allstep(){
	step1
	step2
	step3
	step4
	step5
}

DeleteStep1(){
	rm -fr ${CACHE_STEP1} ${CACHE_STEP2} ${CACHE_STEP3} ${CACHE_STEP4}
}
DeleteStep2(){
	rm -fr ${CACHE_STEP2} ${CACHE_STEP3} ${CACHE_STEP4}
}
DeleteStep3(){
	rm -fr ${CACHE_STEP3} ${CACHE_STEP4}
}
DeleteStep4(){
	rm -fr ${CACHE_STEP4}
}

StartFromStep1(){
	DeleteStep1
	allstep
}

StartFromStep2(){
	DeleteStep2
	allstep
}

StartFromStep3(){
	DeleteStep3
	allstep
}

StartFromStep4(){
	DeleteStep4
	allstep
}

GotoStep1(){
	chroot ${CACHE_STEP1}
} 

GotoStep2(){
	chroot ${CACHE_STEP2}
} 

GotoStep3(){
	chroot ${CACHE_STEP3}
} 

GotoStep4(){
	mount -t proc proc ${CACHE_STEP4}/proc/
	chroot ${CACHE_STEP4}
	umount ${CACHE_STEP4}/proc/
} 

Clean(){
	rm -fr cache/*
}

CleanAll(){
	rm -fr cache/*
}