#!/bin/sh
#
# shellcheck disable=1090,2034,2011
#
# "should check code directly not $?"
# shellcheck disable=2181
# ---------------------------------------------------

# ===================================================
# 01. Attempt to load global DayZ values
# ===================================================
echo "Starting, attempting to load globals.sh"

GLOBALS_FILE="$PWD/globals.sh"
if [ -e "$GLOBALS_FILE" ] ; then
    chmod +x "$GLOBALS_FILE"
    . "$GLOBALS_FILE"
else
    die "Could not load: $GLOBALS_FILE"
fi

# ===================================================
# 02. Local script variables
# ===================================================
export STEAMCMD_USER=steam
export MODLISTS="$PWD/modlists"

export LOCAL_STOCK="$HOME/stock"
export LOCAL_STOCK_GAME="$LOCAL_STOCK/DayZ"
export LOCAL_STOCK_SERVER="$LOCAL_STOCK/DayZServer"
export LOCAL_STOCK_MODS="$LOCAL_STOCK/mods"

# ===================================================
# 03. Mount network drive
# ===================================================
if ! is_network_drive_mounted ; then
    mount_dayz_network_drive

    if ! is_network_drive_mounted ; then
        die "Could not mount network drive"
    fi
fi

# ===================================================
# 04. Checks
# ===================================================
mkdir -p "$LOCAL_STOCK_GAME" "$LOCAL_STOCK_SERVER" "$LOCAL_STOCK_MODS"

if [ "$USER" != "$STEAMCMD_USER" ] ; then
    die "Current user: '$USER' does not match '$STEAMCMD_USER'"
fi

if [ ! -d "$MODLISTS" ] ; then
    die "Could not find modlists at: $MODLISTS"
fi

if [ ! -d "$REMOTE_MODS" ] ; then
    die "Could not find remote mods at: $REMOTE_MODS"
fi

if [ ! -d "$REMOTE_MAPS" ] ; then
    die "Could not find remote maps at: $REMOTE_MAPS"
fi

# ===================================================
# 05. Begin functions
# ===================================================
update_server() {
    echo
    msg "============== UPDATING DAYZ SERVER ================="
    echo
    steamcmd -tcp \
        +force_install_dir "$LOCAL_STOCK_SERVER" \
        +@sSteamCmdForcePlatformType windows \
        +@ShutdownOnFailedCommand 1 \
        +login "$STEAM_USER" \
        +app_update "$DAYZ_SERVER_ID" \
        +quit

    is_network_drive_mounted &&
    do_sync "$LOCAL_STOCK_SERVER"/ "$REMOTE_STOCK_SERVER"
    echo
    msg "============ DONE UPDATING SERVER ====================="
    echo
}

update_game() {
    echo
    msg "========== UPDATING DAYZ GAME ================"
    echo
    steamcmd -tcp \
        +force_install_dir "$LOCAL_STOCK_GAME" \
        +@sSteamCmdForcePlatformType windows \
        +@ShutdownOnFailedCommand 1 \
        +login "$STEAM_USER" \
        +app_update "$DAYZ_GAME_ID" \
        +quit

    is_network_drive_mounted &&
    do_sync "$LOCAL_STOCK_GAME"/ "$REMOTE_STOCK_GAME"
    echo
    msg "============= DONE UPDATING GAME ==================="
    echo
}

# args: $1 = server_modlist.txt to update
update_mods_for_server() {
    echo
    msg "======= UPDATING MODS FOR: $1 ========"
    echo

    mods_file="$MODLISTS/$1"
    map_name=${1%.txt}
    mkdir -p "$REMOTE_MODS/$map_name"

    # Create temporary file to list all the mod_id's we are
    # going to download. This speeds up steamcmd and avoids rate limits.
    tempfile="/tmp/$map_name-mods_to_download.txt"
    :> "$tempfile"

    # load the server_modlist.txt, copying the mod id's we need to update
    # to the temp file, while skipping comments and blank lines
    #
    # format should be: "mod_id^nickname"
    #
    #      # Dabs Framework
    #      # https://steamcommunity.com/sharedfiles/filedetails/?id=2545327648
    #      2545327648^dabsframework
    #
    while read -r mod ; do
        case "$mod" in
            \#*|''|' ')
                ;;
            *)
                mod=${mod%%^*}

		# check validity of syntax
		if [ -z "$mod" ] ; then
		    die "mod for $map_name appears to be empty - syntax error"
		fi
		# if ! isnum "$mod" ; then
		#     die "mod $mod for $map_name does not appear to be a number"
		# fi

		printf "%s\n" "$mod" >> "$tempfile"
		mkdir -p "$LOCAL_STOCK_MODS/$mod"
	esac
    done <"$mods_file"
    unset mod

    echo
    echo "tempfile:"
    cat "$tempfile"
    echo

    # shellcheck disable=2046
    steamcmd \
	-tcp \
        +force_install_dir "$LOCAL_STOCK_MODS" \
        +@sSteamCmdForcePlatformType windows \
        +@ShutdownOnFailedCommand 1 \
	+login "$STEAM_USER" \
	+workshop_download_item \
	"$DAYZ_GAME_ID" \
	$(xargs < "$tempfile") \
	+quit

    msg "exiting - test"
    exit 1

    if [ $? -ne 0 ] ; then
	die "Problem downloading mods for $map_name"
    fi

    echo
    msg "------------ RENAMING MODS -------------"
    echo
    mods_to_copy="$LOCAL_STOCK_MODS/mods_to_copy"
    rm -rf "$mods_to_copy" 2>/dev/null ||:
    mkdir -p "$mods_to_copy"

    :> "$mods_to_copy/mods.txt"
    while read -r mod ; do
	# skip comments, blank lines
	case "$mod" in
	    \#*|''|' ')
		    ;;
	    *)
		mod_id=${mod%%^*}
		mod_name=${mod##*^}
		do_sync "$LOCAL_STOCK_MODS/$mod_id"/ "$mods_to_copy/@${mod_name}"
		printf '@%s\n' "$mod_name" >> "$mods_to_copy/mods.txt"
	esac
    done < "$mods_file"

    echo
    msg "----------- SYNCING MODS -------------"
    echo
    do_sync "$mods_to_copy"/ "$REMOTE_MODS"

    rm -f "$tempfile" 2>/dev/null ||:
    unset tempfile mod map_name mods_file mods_to_copy mod_name mod_id

    echo
    msg "======= DONE UPDATING MODS FOR: $1 ========"
    echo
}

main() {
    update_server
    update_game

    for server in $(ls "$MODLISTS" | xargs) ; do
	[ -f "$MODLISTS/$server" ] || continue
	update_mods_for_server "$server"
	unset server
	# rm -rf "$HOME/.steam/debian-installation/steamapps/workshop/downloads"
	# mkdir -p "$HOME/.steam/debian-installation/steamapps/workshop/downloads"
    done
}

main "$@"