#!/bin/sh

set -e

if [ "$1" != "configure" ]
then
  exit 0
fi

### Change old default values to new default values

CONFIG_FILE="/home/user/.config/kde.org/Marble Desktop Globe.conf"
if test -e "${CONFIG_FILE}"
then
  sed -i \
  -e 's/^sideBar=true$/sideBar=false/' \
  -e 's/^volatileTileCacheLimit=30$/volatileTileCacheLimit=6/' \
  -e 's/^projection=0$/projection=2/' \
  -e '/^distanceUnit=/d' \
  -e 's/^persistentTileCacheLimit=300$/persistentTileCacheLimit=0/' \
  "${CONFIG_FILE}"
  chown user:users "${CONFIG_FILE}"
fi

### Migrate cached openstreetmap tiles to shared directory

# The OSM tile download location in Marble 1.0.x and earlier
OSM_DIR_10="/home/user/MyDocs/.local/share/marble/maps/earth/openstreetmap"

# The OSM tile download location in Marble 1.1 and later
OSM_DIR_11="/home/user/MyDocs/.maps/OpenStreetMap I"

# The OSM base path
OSM_DIR_BASE="/opt/marble/share/marble/data/maps/earth/openstreetmap"

# The OSM theme .dgml file
OSM_DGML="${OSM_DIR_BASE}/openstreetmap.dgml"

# A file used as a flag to indicate a previous migration
MIGRATED="${OSM_DIR_10}/.migrated"

# Verify we have the .dgml file and can write to it (required)
test -w "${OSM_DGML}" || { echo "DGML file ${OSM_DGML} not existant/writable."; exit 1; }

# Check whether the tiles were previously migrated. In that case there's nothing to do
test -e "${MIGRATED}" && exit 0

# If the migration has to move files, ask the user to skip it since it can
# take some minutes to finish

test -e "${OSM_DIR_10}" && test -e "${OSM_DIR_11}" && { maemo-confirm-text "Enable OpenStreetMap Data Sharing" /opt/marble/share/marble/data/migration-warning.txt || exit 0; }

# Tile migration
mkdir -p "${OSM_DIR_11}"
if test -d "${OSM_DIR_10}"
then
    # Cached tiles from an old Marble installation exist and must be migrated
    for x in ${OSM_DIR_10}/[0-9]*
    do
        test -e "${x}" || continue
        dx="$(basename ${x})"
        if test -e "${OSM_DIR_11}/${dx}"
        then
            # Tiles /x/ were downloaded both in Marble and another application
            for y in ${x}/[0-9]*
            do
                test -e "${y}" || continue
                dy="$(basename ${y})"
                target="${OSM_DIR_11}/${dx}/${dy}/"
                if test -e "${target}"
                then
                    # Tiles /x/y/ were downloaded both in Marble and another application. Move each /x/y/z
                    mv "${y}"/[0-9]*.png "${target}"
                    rmdir "${y}" || true
                else
                    # Target dir does not exist yet, so we can move it over (much quicker)
                    mv "${y}" "${OSM_DIR_11}/${dx}"
                fi
            done
            rmdir "${x}" || true
        else
            # Target does not exist yet, so we can move it over (much quicker)
            mv "${x}" "${OSM_DIR_11}/"
        fi
    done
fi

# Delete now empty directory
test -d "${OSM_DIR_10}/" && rmdir "${OSM_DIR_10}/" || true

# If files are left in the old directory, leave a flag to avoid running 
# the migration again. This only happens if the user created custom files in
# the OSM cache directory
test -d "${OSM_DIR_10}/" && touch "${MIGRATED}"

# Finally, change the download location in the .dgml file. Also needed for new installations
sed -i "s@<sourcedir format=\"PNG\"> earth/openstreetmap </sourcedir>@<sourcedir format=\"PNG\"> ${OSM_DIR_11} </sourcedir>@" "${OSM_DGML}"

# Copy the base tile to the right place.
mkdir -p "${OSM_DIR_11}/0/0"
cp "${OSM_DIR_BASE}/0/0/0.png" "${OSM_DIR_11}/0/0/"

exit 0