#!/bin/bash

# create a temporary dir for storing a default processing profile
# and error information
#
# here, we want to make sure we have a suitably large output color space,
# because we want to continue editing after stitching
d=$(mktemp -d)
t=$d/p1.arp
cat <<EOF > $t
[Version]
Version=1015

[Color Management]
OutputProfile=RTv4_ACES-AP1
EOF

if [ -f "$1.arp" ]; then
    # if the first selected file has a sidecar, we are going to use that
    # (except that we override the output profile, see above)
    cp "$1.arp" $d/p2.arp
    sidecar=("-p" "$d/p2.arp")
else
    # if the first selected file has no sidecar, we create a default one 
    sidecar=()
    cat <<EOF >> $t
[Exposure]
HLRecovery=Blend

[ToneCurve]
Enabled=true

[LensProfile]
# LcMode=lfauto
# LCPFile=
# UseDistortion=true
# UseVignette=true
# UseCA=false

[RAW]
CAEnabled=true
CA=true
CAAvoidColourshift=true
CAAutoIterations=2
EOF
fi

# process the raw files with ART-cli, adding a progress dialog 
# for user notification
ART-cli --progress $fast "${sidecar[@]}" -p $t -Y -t -b16 -c "$@" 2>"$d/error" \
    | zenity --width=500 --progress --auto-close --text="Converting to TIFF..."

# a non-zero exit status means the user cancelled the operation
if [ $? -ne 0 ]; then
    # if so, we just exit gracefully
    exit 0
fi

# check if there was an error
err=
if [ -f "$d/error" ]; then
    err=$(cat "$d/error")
fi

# remove the temporary dir
rm -rf $d

if [ "$err" != "" ]; then
    # show the error message if something went wrong
    zenity --error --text="$err"
else
    # otherwise, prepare the list of arguments to provide to hugin. 
    # Note: we are using bash arrays here to be robust wrt. file names
    # with spaces and/or other funny characters
    i=0
    for fn in "$@"; do
        tiffs[$i]="${fn%.*}.tif"
        i=$(expr $i + 1)
    done

    # finally, we can run hugin
    hugin "${tiffs[@]}" || zenity --error --text="Something went wrong..."
fi