#!/bin/bash
# Use this script to build MegaGlest Data Archive for a Version Release
# (Data archive for 'snapshots', with embedded content)
# ----------------------------------------------------------------------------
# Written by Mark Vejvoda <mark_vejvoda@hotmail.com>
# Copyright (c) 2011 Mark Vejvoda under GNU GPL v3.0+

# Consider setting this for small packages if there's plenty of RAM and CPU available:
#export XZ_OPT="$XZ_OPT -9e"

KERNEL="$(uname -s | tr '[A-Z]' '[a-z]')"
if [ "$KERNEL" = "darwin" ]; then
    CURRENTDIR="$(cd "$(dirname "$0")"; pwd)"
else
    CURRENTDIR="$(dirname "$(readlink -f "$0")")"
fi
cd "$CURRENTDIR"
if [ "$1" != "" ] && [ "$2" != "" ]; then SOURCE_BRANCH="$2"; fi
VERSION=`./mg-version.sh --version`

REPODIR="$CURRENTDIR/../../"
REPO_DATADIR="$REPODIR/data/glest_game"
if [ -f "$REPO_DATADIR/.git" ] && [ "$(which git 2>/dev/null)" != "" ]; then
    cd "$REPO_DATADIR"
    DATA_BRANCH="$(git branch | grep '^* ' | awk '{print $2}')"
    # on macos are problems with more advanced using awk ^
    DATA_COMMIT_NR="$(git rev-list HEAD --count)"
    DATA_COMMIT="$(echo "[$DATA_COMMIT_NR.$(git log -1 --format=%h)]")"
    DATA_HASH=$(git log -1 --format=%H)
fi
if [ -d "$REPODIR/.git" ] && [ "$(which git 2>/dev/null)" != "" ]; then
    cd "$REPODIR"
    if [ "$SOURCE_BRANCH" = "" ]; then SOURCE_BRANCH="$(git branch | grep '^* ' | awk '{print $2}')"; fi
    # on macos are problems with more advanced using awk ^
    SOURCE_COMMIT="$(echo "[$(git rev-list HEAD --count).$(git log -1 --format=%h)]")"
    if [ "$DATA_HASH" = "" ]; then DATA_HASH=$(git submodule status "$REPO_DATADIR" | awk '{print $1}'); fi
fi
classic_snapshot_for_tests=0
if [ "$SOURCE_BRANCH" != "" ] && [ "$SOURCE_BRANCH" != "master" ] && [ "$(echo "$VERSION" | grep '\-dev$')" != "" ]; then
    classic_snapshot_for_tests=1
fi
if [ "$classic_snapshot_for_tests" -eq "1" ]; then ARCHIVE_TYPE="7z"; else ARCHIVE_TYPE="tar.xz"; fi
SNAPSHOTNAME="mg-data-universal"
SN_PACKAGE="$SNAPSHOTNAME-$VERSION-$SOURCE_BRANCH.$ARCHIVE_TYPE"
RELEASENAME="megaglest-standalone-data"
PACKAGE="$RELEASENAME-$VERSION.$ARCHIVE_TYPE"
RELEASEDIR_ROOT="$CURRENTDIR/../../../release"
if [ "$classic_snapshot_for_tests" -eq "1" ]; then RELEASENAME="$SNAPSHOTNAME"; PACKAGE="$SN_PACKAGE"; fi
RELEASEDIR="${RELEASEDIR_ROOT}/${RELEASENAME-$VERSION}"
if [ "$1" = "--show-result-path" ]; then echo "${RELEASEDIR_ROOT}/$PACKAGE"; exit 0
elif [ "$1" = "--show-result-path2" ]; then echo "${RELEASEDIR_ROOT}/$RELEASENAME"; exit 0; fi

DATA_HASH_MEMORY="$RELEASEDIR_ROOT/data_memory"
DATA_HASH_FILE="$DATA_HASH_MEMORY/$VERSION-$SOURCE_BRANCH.log"
if [ ! -d "$DATA_HASH_MEMORY" ]; then mkdir -p "$DATA_HASH_MEMORY"; fi
if [ "$DATA_HASH" != "" ]; then
    if [ ! -e "$DATA_HASH_FILE" ]; then
	echo "$DATA_HASH $DATA_COMMIT_NR" > "$DATA_HASH_FILE"
    elif [ "$(cat "$DATA_HASH_FILE" | grep "$DATA_HASH")" = "" ]; then
	DATA_COMMIT_PREV_NR="$(cat "$DATA_HASH_FILE" | head -1 | awk '{print $2}')"
	if [ "$DATA_COMMIT_PREV_NR" != "" ] && [ "$DATA_COMMIT_NR" -lt "$DATA_COMMIT_PREV_NR" ]; then
	    echo " warning: Detected older git revision of data than previously, $DATA_COMMIT_NR < $DATA_COMMIT_PREV_NR."
	fi
	echo "$DATA_HASH $DATA_COMMIT_NR" > "$DATA_HASH_FILE"
    else exit 0; fi
fi

cd "$CURRENTDIR"
if [ "$DATA_BRANCH" != "" ]; then echo "Detected parameters for data repository: branch=[$DATA_BRANCH], commit=$DATA_COMMIT"; fi
if [ "$SOURCE_BRANCH" != "" ]; then echo "Detected parameters for source repository: branch=[$SOURCE_BRANCH], commit=$SOURCE_COMMIT"; fi

if [ "$1" != "--installer" ]; then echo "Creating data package in $RELEASEDIR"; else echo "Creating data directory $RELEASEDIR"; fi

[[ -d "$RELEASEDIR" ]] && rm -rf "$RELEASEDIR"
mkdir -p "$RELEASEDIR"

# copy data
echo "copying data ..."

mkdir -p "$RELEASEDIR/data/"
cd "$RELEASEDIR/data/"
git archive --remote ${REPODIR}/data/glest_game/ HEAD:data | tar x

cd "$RELEASEDIR"
mkdir -p "$RELEASEDIR/docs/"
cd "$RELEASEDIR/docs/"
git archive --remote ${REPODIR}/data/glest_game/ HEAD:docs | tar x
git archive --remote ${REPODIR} HEAD:docs | tar x

cd "$RELEASEDIR"
mkdir -p "$RELEASEDIR/maps/"
cd "$RELEASEDIR/maps/"
git archive --remote ${REPODIR}/data/glest_game/ HEAD:maps | tar x

cd "$RELEASEDIR"
mkdir -p "$RELEASEDIR/scenarios/"
cd "$RELEASEDIR/scenarios/"
git archive --remote ${REPODIR}/data/glest_game/ HEAD:scenarios | tar x

cd "$RELEASEDIR"
mkdir -p "$RELEASEDIR/techs/"
cd "$RELEASEDIR/techs/"
git archive --remote ${REPODIR}/data/glest_game/ HEAD:techs | tar x

cd "$RELEASEDIR"
mkdir -p "$RELEASEDIR/tilesets/"
cd "$RELEASEDIR/tilesets/"
git archive --remote ${REPODIR}/data/glest_game/ HEAD:tilesets | tar x

cd "$RELEASEDIR"
mkdir -p "$RELEASEDIR/tutorials/"
cd "$RELEASEDIR/tutorials/"
git archive --remote ${REPODIR}/data/glest_game/ HEAD:tutorials | tar x

echo "Removing non required files ..."
cd "$CURRENTDIR"
# START
# END

cd "$CURRENTDIR"
if [ "$1" != "--installer" ]; then
    echo "creating data archive: $PACKAGE"
    [[ -f "${RELEASEDIR_ROOT}/$PACKAGE" ]] && rm "${RELEASEDIR_ROOT}/$PACKAGE"
    cd $RELEASEDIR
    if [ "$ARCHIVE_TYPE" = "7z" ] && [ "$(which 7za 2>/dev/null)" != "" ]; then
	cd ..
	7za a "$PACKAGE" "$RELEASEDIR" >/dev/null
    else
	tar -cf - * | xz > ../$PACKAGE
    fi
    cd $CURRENTDIR

    ls -la ${RELEASEDIR_ROOT}/$PACKAGE
fi
if [ "$1" = "-CI" ] && [ -d "$RELEASEDIR" ]; then rm -rf "$RELEASEDIR"; fi