#!/sbin/sh
#初始化
OUTFD="$2"
ZIPFILE="$3"

#设置字符输出
ui_print() {
    echo "ui_print "$@"" > /proc/self/fd/$OUTFD
}
#设置工作目录
MODDIR=/dev/backup
#安装二进制文件
rm -rf "$MODDIR"
mkdir -p "$MODDIR"
unzip -o "$ZIPFILE" 'apk/Message.apk' -d "$MODDIR"
unzip -o "$ZIPFILE" 'bin/pv' -d "$MODDIR"
unzip -o "$ZIPFILE" 'bin/bin.sh' -d "$MODDIR"
unzip -o "$ZIPFILE" 'bin/busybox' -d "$MODDIR"
unzip -o "$ZIPFILE" 'bin/appinfo' -d "$MODDIR"
unzip -o "$ZIPFILE" 'bin/appinfo.dex' -d "$MODDIR"
unzip -o "$ZIPFILE" 'bin/tar' -d "$MODDIR"
unzip -o "$ZIPFILE" 'bin/zstd' -d "$MODDIR"
unzip -o "$ZIPFILE" 'script/restore' -d "$MODDIR"
unzip -o "$ZIPFILE" 'script/restore2' -d "$MODDIR"
unzip -o "$ZIPFILE" 'script/Get_DirName' -d "$MODDIR"
unzip -o "$ZIPFILE" 'script/應用列表.txt' -d "$MODDIR"
unzip -o "$ZIPFILE" 'script/backup_settings.conf' -d "$MODDIR"
chmod -R 0755 "$MODDIR/bin/"
busybox="$MODDIR/bin/busybox"
mkdir -p "$MODDIR/xbin"
"$busybox" --list | while read; do
	case $REPLY in
	tar) ;;
	*)
		ln -s "$busybox" "$MODDIR/xbin/$REPLY"
		;;
	esac
done
isBoolean() {
	nsx="$1"
	if [[ $1 = 1 ]];then
		nsx=true
	elif [[ $1 = 0 ]];then
		nsx=false
	else
		ui_print "script/backup_settings.conf填寫錯誤" && exit 2
	fi
}
Set_back() {
	return 1
}
#设置环境
export PATH="$MODDIR/xbin:$MODDIR/bin:$PATH"
. "$MODDIR/script/backup_settings.conf"
i=1
txt="$MODDIR/script/應用列表.txt"
isBoolean "$Splist" && Splist="$nsx"
isBoolean "$Backup_obb_data" && Backup_obb_data="$nsx"
isBoolean "$Backup_user_data" && Backup_user_data="$nsx"
[[ ! -f $txt ]] && ui_print "$txt缺少" && exit 1
r="$(cat "$txt" | grep -v "#" | sed -e '/^$/d' | sed -n '$=')"
[[ $r = "" ]] && ui_print "爬..應用列表.txt是空的備份個鬼" && exit 0
path="/data/media/0/Android"
path2="/data/data"
data="/data"
ui_print $(df -h "$data")
ui_print $(df -h "$data" | awk 'END{print "剩餘:"$3"使用率:"$4}')
Backup="/data/media/0/TWRP/Backup_$Compression_method"
[[ ! -d $Backup ]] && mkdir -p "$Backup" || rm -rf "$Backup"/*
[[ ! -f $Backup/應用列表.txt ]] && echo "#不需要恢復還原的應用請在開頭注釋# 比如#xxxxxxxx 酷安" >"$Backup/應用列表.txt"
[[ ! -d $Backup/bin ]] && cp -r "$MODDIR/bin" "$Backup" && cp -r "$MODDIR/apk" "$Backup/bin"
[[ ! -f $Backup/還原備份.sh ]] && cp -r "$MODDIR/script/restore" "$Backup/還原備份.sh"
[[ ! -f $Backup/掃描資料夾名.sh ]] && cp -r "$MODDIR/script/Get_DirName" "$Backup/掃描資料夾名.sh"
filesize="$(du -ks "$Backup" | awk '{print $1}')"
#調用二進制
Quantity=0
#顯示執行結果
echo_log() {
	if [[ $? = 0 ]]; then
		ui_print "$1成功" && result=0
	else
		ui_print "$1備份失敗，過世了" && result=1
	fi
}
#檢測apk狀態進行備份
Backup_apk() {
	#創建APP備份文件夾
	[[ ! -d $Backup_folder ]] && mkdir -p "$Backup_folder"
	#備份apk
	ui_print "$1"
	[[ $lxj -ge 95 ]] && ui_print "$data空間不足,達到$lxj%" && exit 2
	rm -rf "$Backup_folder"/*.apk
	[[ $(cat "$Backup/應用列表.txt" | grep -v "#" | sed -e '/^$/d' | awk '{print $2}' | grep -w "^${name2}$" | head -1) = "" ]] && echo "$name1 $name2" >>"$Backup/應用列表.txt"
	find "$apk_path" -maxdepth 1 -name "*.apk" -type f | while read; do
		path="$REPLY"
		b_size="$(ls -l "$path" | awk '{print $5}')"
		k_size="$(awk 'BEGIN{printf "%.2f\n", "'$b_size'"/'1024'}')"
		m_size="$(awk 'BEGIN{printf "%.2f\n", "'$k_size'"/'1024'}')"
		ui_print "${path##*/} ${m_size}MB(${k_size}KB)"
	done
	(cd "$apk_path"
	case $Compression_method in
	tar|TAR|Tar) tar -cf "$Backup_folder/apk.tar" *.apk ;;
	zstd|Zstd|ZSTD) tar -cf - *.apk | zstd -r -T0 -6 -q >"$Backup_folder/apk.tar.zst" ;;
	esac)
	echo_log "備份$apk_number個Apk"
	if [[ $result = 0 ]]; then
		[[ $PackageName = "" ]] && echo "PackageName=\"$name2\"" >>"$app_details"
		[[ $ChineseName = "" ]] && echo "ChineseName=\"$name1\"" >>"$app_details"
		[[ ! -f $Backup_folder/還原備份.sh ]] && cp -r "$MODDIR/script/restore2" "$Backup_folder/還原備份.sh"
	fi
	if [[ $name2 = com.android.chrome ]]; then
		#刪除所有舊apk ,保留一個最新apk進行備份
		ReservedNum=1
		FileNum="$(ls /data/app/*/com.google.android.trichromelibrary_*/base.apk 2>/dev/null | wc -l)"
		while [[ $FileNum -gt $ReservedNum ]]; do
			OldFile="$(ls -rt /data/app/*/com.google.android.trichromelibrary_*/base.apk 2>/dev/null | head -1)"
			ui_print "刪除文件:${OldFile%/*/*}"
			rm -rf "${OldFile%/*/*}"
			let "FileNum--"
		done
		[[ -f $(ls /data/app/*/com.google.android.trichromelibrary_*/base.apk 2>/dev/null) && $(ls /data/app/*/com.google.android.trichromelibrary_*/base.apk 2>/dev/null | wc -l) = 1 ]] && cp -r "$(ls /data/app/*/com.google.android.trichromelibrary_*/base.apk 2>/dev/null)" "$Backup_folder/nmsl.apk"
	fi
	[[ $name2 = bin.mt.plus && -f $apk_path/base.apk && ! -f $Backup/$name1.apk ]] && cp -r "$apk_path/base.apk" "$Backup/$name1.apk"
	unset PackageName ChineseName ; D=1
}
#檢測數據位置進行備份
Backup_data() {
	unset  zsize
	case $1 in
	user) data_path="$path2/$name2" ;;
	data) data_path="$path/$1/$name2" ;;
	obb) data_path="$path/$1/$name2" ;;
	*) [[ -f $app_details ]] && data_path="$2" && Compression_method=tar && zsize=1 ;;
	esac
	if [[ -d $data_path ]]; then
		[[ $lxj -ge 95 ]] && ui_print "$data空間不足,達到$lxj%" && exit 2
		ui_print "備份$1數據"
		case $1 in
		user)
			case $Compression_method in
			tar|Tar|TAR) tar --exclude="${data_path##*/}/.ota" --exclude="${data_path##*/}/cache" --exclude="${data_path##*/}/lib" -cpf "$Backup_folder/$1.tar" -C "${data_path%/*}" "${data_path##*/}" 2>/dev/null ;;
			zstd|Zstd|ZSTD) tar --exclude="${data_path##*/}/.ota" --exclude="${data_path##*/}/cache" --exclude="${data_path##*/}/lib" -cpf - -C "${data_path%/*}" "${data_path##*/}" 2>/dev/null | zstd -r -T0 -6 -q >"$Backup_folder/$1.tar.zst" ;;
			*) ui_print "$Compression_method為不支持的壓縮算法" && rm -rf "$Backup" && exit 2 ;;
			esac ;;
		*)
			case $Compression_method in
			tar|Tar|TAR) tar --exclude="Backup_"* -cPpf "$Backup_folder/$1.tar" "$data_path" 2>/dev/null ;;
			zstd|Zstd|ZSTD) tar --exclude="Backup_"* -cPpf - "$data_path" 2>/dev/null | zstd -r -T0 -6 -q >"$Backup_folder/$1.tar.zst" ;;
			*) ui_print "$Compression_method為不支持的壓縮算法" && rm -rf "$Backup" && exit 2 ;;
			esac ;;
		esac
		echo_log "備份$1數據"
	else
		ui_print "$1數據不存在跳過備份"
	fi
}
endtime() {
	#計算總體切換時長耗費
	case $1 in
	1) starttime="$starttime1" ;;
	2) starttime="$starttime2" ;;
	esac
	endtime="$(date -u "+%s")"
	duration="$(echo "$((endtime - starttime))" | awk '{t=split("60 秒 60 分 24 時 999 天",a);for(n=1;n<t;n+=2){if($1==0)break;s=$1%a[n]a[n+1]s;$1=int($1/a[n])}print s}')"
	[[ $duration != "" ]] && ui_print "$2用時:$duration" || ui_print "$2用時:0秒"
}
bn=37
#開始循環$txt內的資料進行備份
#記錄開始時間
starttime1="$(date -u "+%s")"
{
while [[ $i -le $r ]]; do
	ui_print "備份第$i個應用 總共$r個 剩下$((r-i))個應用"
	name2="$(cat "$txt" | grep -v "#" | sed -e '/^$/d' | sed -n "${i}p" | awk '{print $2}')"
	name1="$(cat "$txt" | grep -v "#" | sed -e '/^$/d' | sed -n "${i}p" | awk '{print $1}')"
	lxj="$(df -h "$data" | awk 'END{print $4}' | sed 's/%//g')"
	if [[ $name1 = *! || $name1 = *！ ]]; then
		name1="$(echo "$name1" | sed 's/!//g ; s/！//g')"
		ui_print "跳過備份$name1 所有數據"
		No_backupdata=1
	else
		[[ $No_backupdata != "" ]] && unset No_backupdata
	fi
	Backup_folder="$Backup/$name1"
	app_details="$Backup_folder/app_details"
	if [[ -f $app_details ]]; then
		. "$app_details"
		if [[ $PackageName != $name2 ]]; then
			unset ChineseName PackageName
			Backup_folder="$Backup/${name1}[${name2}]"
			app_details="$Backup_folder/app_details"
			[[ -f $app_details ]] && . "$app_details"
		fi
	fi
	[[ $name2 = "" ]] && ui_print "警告! 應用列表.txt應用包名獲取失敗，可能修改有問題" && exit 1
	apk_path="$(cat "$txt" | grep -v "#" | sed -e '/^$/d' | sed -n "${i}p" | awk '{print $3}')"
	if [[ -d $apk_path ]]; then
		starttime2="$(date -u "+%s")"
		ui_print "備份$name1 ($name2)"
		[[ $name2 = com.tencent.mobileqq ]] && ui_print "QQ可能恢復備份失敗或是丟失聊天記錄，請自行用你信賴的軟件備份"
		[[ $name2 = com.tencent.mm ]] && ui_print "WX可能恢復備份失敗或是丟失聊天記錄，請自行用你信賴的軟件備份"
		apk_number="$(find "$apk_path" -maxdepth 1 -name "*.apk" -type f 2>/dev/null | wc -l)"
		if [[ $apk_number = 1 ]]; then
			if [[ $Splist = false ]]; then
				Backup_apk "非Split Apk"
			else
				ui_print "非Split Apk跳過備份"
				unset D
			fi
		else
			Backup_apk "Split Apk支持備份"
		fi
		if [[ $D != ""  && $result = 0 && $No_backupdata = "" ]]; then
			if [[ $Backup_obb_data = true ]]; then
				#備份data數據
				Backup_data "data"
				#備份obb數據
				Backup_data "obb"
			fi
			#備份user數據
			[[ $Backup_user_data = true ]] && Backup_data "user"
		fi
		endtime 2 "$name1備份"
		ui_print "完成$((i*100/r))% $hx$(df -h "$data" | awk 'END{print "剩餘:"$3"使用率:"$4}')"
	else
		ui_print "$name1[$name2]不在安裝列表，備份個寂寞？"
	fi
	ui_print "
	"
	let i++
done
#計算出備份大小跟差異性
filesizee="$(du -ks "$Backup" | awk '{print $1}')"
dsize="$(($((filesizee - filesize)) / 1024))"
ui_print "備份資料夾路徑:$Backup"
ui_print "備份資料夾總體大小$(du -ksh "$Backup" | awk '{print $1}')"
if [[ $dsize -gt 0 ]]; then
	if [[ $((dsize / 1024)) -gt 0 ]]; then
		ui_print "本次備份: $((dsize / 1024))gb"
	else
		ui_print "本次備份: ${dsize}mb"
	fi
else
	ui_print "本次備份: $(($((filesizee - filesize)) * 1000 / 1024))kb"
fi
ui_print "批量備份完成"
endtime 1 "批量備份開始到結束"
rm -rf "$MODDIR"
exit 0
}&