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#!/bin/bash

# Guide a user towards a image URL with questions and exploration of
# http://download.tizen.org/.
# If you supply a file as parameter, the output will be saved in it.
# Exit with value 2 if SIGINT is sent.

#!/bin/bash

outfile=${1:-/dev/stdout}
mode=${2:-"preset"}

BASE_URL="http://download.tizen.org/"
IMAGE_URL=
DIALOG_RESULT=
DIALOG=/usr/bin/dialog

BACK_STRING="..(parent)"

tmpdir=$(mktemp -d /tmp/$(basename $0).XXXXXXXX)
tmpfile=$(mktemp /tmp/dialog.XXXXXXXX)
trap "rm -rf $tmpdir $tmpfile" STOP INT QUIT EXIT
pushd $tmpdir &>/dev/null

function select_topdir() {
    $DIALOG --no-items --item-help --menu "Select image type" 15 70 15  \
	"releases" "Official Tizen release : daily, weekly, milestones" \
	"snapshots/tizen" "Tizen snapshots of main project for all Tizen profiles" \
	"snapshots/devel" "Tizen snapshots of devel project for all Tizen profiles" \
	"prerelease" "Prerelease images" 2>$tmpfile
    ret=$?

   [[ $ret == 0 ]] && { DIALOG_RESULT=$(cat $tmpfile); return 0; }
    DIALOG_RESULT=
    return 1
}

function select_image() {
    dir=$1

    declare -a items

    readarray items < <(for x in $dir/*; do
        [[ ! -d $x ]] && continue
        [[ -z "$(ls -d $x/* 2>/dev/null)" ]] && continue
        basename $x
    done | sort -r)

    if [[ ${#items[@]} == 0 ]]; then
        DIALOG_RESULT=
        return 0
    fi

    items[${#items[@]}]="$BACK_STRING"

    $DIALOG --no-items --menu "Select subdirectory ($dir)" 15 70 15 $(echo "${items[@]}") 2>$tmpfile
    ret=$?

    [[ $ret == 0 ]] && { DIALOG_RESULT=$(cat $tmpfile); return 0; }
    DIALOG_RESULT=
    return 1
}

function do_sync() {
    dialog_pid=$1
    current_pid=$$

    echo -e "\nFetching images locations... Please wait...\n"

    rsync -a --relative --include=*/ --include=*.raw.* --exclude=* download.tizen.org::all/$curdir | grep -v ^d 2>/dev/null | awk '{print $5}' 2>/dev/null | while read x; do
		## exit from the url-util script if dialog process is terminated
		if [ ! -e /proc/$dialog_pid ]; then
			kill $current_pid
			exit 1
		fi
        mkdir -p $(dirname $x)
        touch $x
        echo $(basename $x)
    done

    echo "DONE - killing $dialog_pid"

    [[ -n "$dialog_pid" ]] && kill $dialog_pid
}


function enter_url() {
	$DIALOG --stderr --no-cancel --inputbox "Enter the entire url of the image :\n" 24 70 2>$tmpfile
	IMAGE_URL=$(cat $tmpfile)
	if ! curl --fail -s -I "$IMAGE_URL" > /dev/null ; then
		echo "Bad image url !"
		 $DIALOG --msgbox "The image url couldn't be reached, please verify that the url is correct." 15 70
		exit 1
	fi
}

#######################################################


if [ "$mode" = "preset" ]; then
	IMAGE_URL+=$BASE_URL

	select_topdir || exit 1

	curdir=$DIALOG_RESULT
	touch sync.out
	$DIALOG --title "Fetching images locations" --tailbox sync.out 24 70 &
	do_sync $! >>sync.out

	initial_dir=$curdir
	while [ 1 ]; do
		select_image $curdir || exit 1
		if [[ "$DIALOG_RESULT" == "${BACK_STRING}" ]]; then
			curdir=$(dirname $curdir)
		elif [[ -z "$DIALOG_RESULT" ]]; then
			break
		else
			curdir="$curdir/$DIALOG_RESULT"
		fi
	done

	IMAGE_URL+=$(echo $curdir/*.raw.*)

elif [ "$mode" = "url" ]; then
	enter_url
fi

popd &>/dev/null

cat << EOC > $outfile
$(echo "$IMAGE_URL")
EOC