#!/bin/bash
OFFLINE=false
UPDATE_MIRROR=false
for var in "$@"
do
    if [ "x$var" == "x--offline" ]; then
        OFFLINE=true
    elif [ "x$var" == "x--update-mirror" ]; then
        UPDATE_MIRROR=true
    fi
done
if [ -d "/opt/rjkbin" ]; then
    echo "Error: This should *not* be run on the server that has the master copy."
    exit 1
fi
if [ -f ~/.config/EnlivenMinetest/settings.rc ]; then
    source ~/.config/EnlivenMinetest/settings.rc
else
    >&2 echo "No ~/.config/EnlivenMinetest/settings.rc, using defaults."
fi
DEFAULT_MINEBEST_HOST=mtio
if [ -z "$MINEBEST_HOST" ]; then
    MINEBEST_HOST=$DEFAULT_MINEBEST_HOST
fi
echo "MINEBEST_HOST=$MINEBEST_HOST"
code=
if [ ! -d "/opt/minebest" ]; then
cat <<END
/opt/minebest does not exist. First do:
sudo mkdir /opt/minebest
sudo chown -R $USER:$USER /opt/minebest
END
    exit 1
fi
if [ "x$OFFLINE" = "xfalse" ]; then
    if [ "$UPDATE_MIRROR" = "true" ]; then
        if [ "$MINEBEST_HOST" != "$DEFAULT_MINEBEST_HOST" ]; then
            echo "Asking $MINEBEST_HOST to update its own copy of minebest..."
            ssh "$MINEBEST_HOST" 'rsync -rtlv --delete mtio:/opt/minebest/ /opt/minebest \
            --include "assemble/***" \
            --include "mtbin/***" \
            --include "mtcache/***" \
            --include "mtkit/***" \
            --include "mtkit.txt" \
            --exclude "*"'
        fi
    fi
    echo "Updating minebest from $MINEBEST_HOST..."

    rsync -rtlv --delete $MINEBEST_HOST:/opt/minebest/ /opt/minebest \
         --include "assemble/***" \
         --include "mtbin/***" \
         --include "mtcache/***" \
         --include "mtkit/***" \
         --include "mtkit.txt" \
         --exclude "*" \
    ;
    code=$?

    if [ $code -eq 0 ]; then
        echo "[pull-lmk] OK (Downloading /opt/minebest)"
    else
        echo "[pull-lmk] FAILED (Downloading /opt/minebest)"
        exit $code
    fi
fi
echo
echo
echo "Performing build locally..."
# l: copy symlinks as symlinks
# L: transform symlink into referent file/dir
# except this one (master copy on build server points to /var/mtworlds!):
if [ -L /opt/minebest/mtworlds ]; then rm /opt/minebest/mtworlds; fi
# Unimportant:
#     --include "mtworlds/" \
#     --include "mxekit/" \
#     --include "pagecache/" \
#     --include "tmp/" \
# Should get rebuilt after sync (automated further down):
#     --include "prod/" \

#     --exclude "mtkit0/" \
#     --exclude "mtkit.old/" \
#     --exclude "git-trees.save/" \
#     --exclude "tmp/" \
#     --exclude "mtkit/" \
# ^ Had too many exclusions, so include explicitly instead:
# ^ exclude mtkit because it is downstream from linux-minetest-kit.zip
#   in prod (symlink to assemble/prod)!
#   (mtkit is the installed copy in the case of a server, and is used as
#   the install source when using the maintainer rsync copy as the
#   install source)


echo
echo
echo "[pull-lmk] * building /opt/minebest/prod..."
# mtkit
# - is the INSTALLED copy,
# - maybe OLDER than linux-minetest-kit.zip!
# echo "[pull-lmk]   - removing prod..."
# rm -Rvf /opt/minebest/prod
if [ $? -ne 0 ]; then exit 1; fi
echo "[pull-lmk]   - building prod..."

# NOTE: If zip files in newline in linux-minetest-kit were not up to
#   date, update them using bash -e util/buildarch.sh
#   which builds them from the git-trees subdirectories
# util/buildarch.sh

# Build /opt/minebest/prod:
cd /opt/minebest/assemble/ && PROTECTED_GROUP=owner PROTECTED_USER=owner bash -e util/buildskipwin.sh
code=$?
# prod
# - delete prod/* to test building prod using "bash -e buildskipwin.sh"

if [ $code -eq 0 ]; then
    echo "[pull-lmk] * building /opt/minebest/prod...OK"
else
    echo "[pull-lmk] * building /opt/minebest/prod...FAILED"
    echo "[pull-lmk] * However, ignore "
    # exit $code
fi

if [ -L /opt/minebest/mtkit ]; then
    rm -f /opt/minebest/mtkit
    if [ $? -ne 0 ]; then exit 1; fi
elif [ -d /opt/minebest/mtkit ]; then
    rm -rf /opt/minebest/mtkit
    if [ $? -ne 0 ]; then exit 1; fi
fi

if [ -L /tmp/lmk ]; then
    rm -f /tmp/lmk
    if [ $? -ne 0 ]; then exit 1; fi
elif [ -d /tmp/lmk ]; then
    rm -rf /tmp/lmk
    if [ $? -ne 0 ]; then exit 1; fi
fi

KIT_ZIP=/opt/minebest/assemble/prod/linux-minetest-kit.zip
if [ ! -f $KIT_ZIP ]; then
    echo "Error: no $KIT_ZIP"
    exit 1
fi

rm -rf /tmp/lmk && unzip $KIT_ZIP -d /tmp/lmk
rm -rf /opt/minebest/mtkit && mv /tmp/lmk/linux-minetest-kit /opt/minebest/mtkit
GOOD_MTKIT_FLAG="/opt/minebest/mtkit/mtcompile-program.pl"
if [ ! -f "$GOOD_MTKIT_FLAG" ]; then
    echo "[pull-lmk] Error: extracting $KIT_ZIP didn't seem to work. There is no '$GOOD_MTKIT_FLAG'."
    exit 1
fi

# ^ exclude remotely-built copies of the program:
#   - mtkit/minetest/
#   - prod/ ?
# ^ The real git-trees is in assemble/ so do not exclude
#     --exclude "assemble/" \
#     --info=progress2 \
#

if [ ! -L /opt/minebest/mtkit/toolstree ]; then
    if [ -d /opt/minebest/mtkit/toolstree ]; then
        rm -Rf /opt/minebest/mtkit/toolstree
    fi
fi

if [ ! -L /opt/minebest/mtkit/minetest ]; then
    if [ -d /opt/minebest/mtkit/minetest ]; then
        rm -Rf /opt/minebest/mtkit/minetest
    fi
fi

cd /opt/minebest
cat <<END
[pull-lmk]
Next do (Linux instructions):

cd EnlivenMinetest && sudo ./install-minetest-build-deps.sh
# Observe any errors above and correct them if your operating system differs.
cd /opt/minebest/mtkit
# See /opt/minebest/mtkit/quickstart.txt for further guidance.
# Add stub (empty file) for deprecated library used by irrlicht-1.8.4/source/Irrlicht/COSOperator.cpp (to avoid missing sys/sysctl.h error compiling libraries)
sudo touch /usr/include/sys/sysctl.h
bash -e mtcompile-libraries.sh build
perl mtcompile-program.pl build --finetest --client
# cd /opt/minebest/mtkit/minetest/bin
# nopackage install finetest --version rsync --caption "Finetest (rsync)"
# install-lmk
# ^ located in EnlivenMinetest/utilities
# or upgrade but don't mess with worlds (other than builtin ones), nor mods etc:
rsync -rtL --exclude 'mods' --exclude 'minetest.conf' /opt/minebest/mtkit/minetest/ ~/finetest-rsync
# or rsync -rtL --exclude 'mods' --exclude 'minetest.conf' /opt/minebest/mtkit/minetest/ ~/minetest-rsync
# or rsync -rtL --exclude 'mods' --exclude 'minetest.conf' /opt/minebest/mtkit/minetest/ ~/trolltest-rsync
# AND:
rsync -rt --delete /opt/minebest/mtkit/minetest/games/bucket_game/ ~/finetest-rsync/games/bucket_game
# or rsync -rt --delete /opt/minebest/mtkit/minetest/games/bucket_game/ ~/minetest-rsync/games/bucket_game
# or rsync -rt --delete /opt/minebest/mtkit/minetest/games/bucket_game/ ~/trolltest-rsync/games/bucket_game

# debug:
valgrind -q --vgdb-error=0 --leak-check=full bin/minetest
# ^ then on crash, follow instructions provided in error to connect gdb to it.
# See https://developers.redhat.com/articles/2021/11/01/debug-memory-errors-valgrind-and-gdb#an_example_program_with_memory_errors
END