#!/bin/bash

set -e

MYSTIC_SOURCE=${1:-mys112a42_pi.zip}
[ "$1" ] && shift
SPELL_SOURCE=${1:-mystic_spellcheck_v2.zip}
[ "$1" ] && shift

CLEAN_INSTALL_DIR=x
INSTALL_CONTAINER=debian:stretch-slim
TARGET_DIR=mystic
PATCH_FILE=mystic.112a39.patch

[ $(id -u) -ne 0 ] && echo "ERROR: You need to run me as root." && exit 1

if [ -d ${TARGET_DIR} ]; then
	echo "! Skipping installation [${TARGET_DIR}] already exists"

else
	# 1) Download Mystic App
	[ ! -f ${MYSTIC_SOURCE} -o ! -f ${SPELL_SOURCE} ] && echo "ERROR: Source file missing [${MYSTIC_SOURCE}/${SPELL_SOURCE}], did you download it?" && exit 1

	# 2) Create a new directory for it and unzip the App into it
	[ -d ${CLEAN_INSTALL_DIR} ] && echo "ERROR: Directory [${CLEAN_INSTALL_DIR}] already exists!" && exit 1

	unzip ${MYSTIC_SOURCE} -d ${CLEAN_INSTALL_DIR}
	chmod +x ${CLEAN_INSTALL_DIR}/install
	[ $? -gt 0 ] && echo "ERROR: Unzip failed?" && exit 1

	# 3) Run docker with -v mapping the unzip files to an arbitrary directory -v unzipfiles:/install
	# ** @TODO Request upstream to default QWK and Echo DIRs to named dir  as well during installation
	echo "Running docker, please perform the installation, and set:"
	echo "* Installation directory to /mystic"
	echo "* Data directories prefixed with /mystic/data"
	echo "+ * Leave System Path and Scripts to /mystic"
	echo "+ * Especially, QWK Settings and Echomail Settings"

	docker run --rm -it -v ${PWD}/${CLEAN_INSTALL_DIR}:/install ${INSTALL_CONTAINER} /bin/bash -c "cd /install; ./install; [ -d /mystic ] && echo \"Now change QWK Settings and Echomail settings...\" && cd /mystic/ && sleep 5 && ./mystic -cfg && cd /; mv /mystic /install/"

	[ ! -d ${CLEAN_INSTALL_DIR}/mystic/data/data ] && echo "ERROR: Expected a [${CLEAN_INSTALL_DIR}/mystic/data/data] dir, but it wasnt there?" && exit 1
	[ ! -d ${CLEAN_INSTALL_DIR}/mystic/scripts ] && echo "ERROR: Expected a [${CLEAN_INSTALL_DIR}/mystic/scripts] dir, but it wasnt there?" && exit 1
	[ ! -d ${CLEAN_INSTALL_DIR}/mystic/semaphore ] && echo "ERROR: Expected a [${CLEAN_INSTALL_DIR}/mystic/semaphore] dir, but it wasnt there?" && exit 1

	# Add the spell directionary files to the data directory
	unzip ${SPELL_SOURCE} dictionary.* -d ${CLEAN_INSTALL_DIR}/mystic/data/data

	# 4) Run this script which will clean up the install and ZIP it up to be used with a docker.
	cd ${CLEAN_INSTALL_DIR}/mystic

	mv files mystic.dat data/
	rm -rf localqwk echomail

	# We need a symbolic link so that MIS can find MYSTIC
	# @TODO Request fix from upstream
	ln -s ../mystic data/mystic

	chmod 755 * scripts/mide scripts/mplc scripts/*.mpx
	chmod 644 *.ini *.txt docs/*.txt scripts/*.mps scripts/*.ini

	patch -p0 < ../../${PATCH_FILE}

	# Clean up data dir
	find data -type f -exec chmod 644 {} \;

	# Finished
	mv data ../..
	cd ../..
	mv ${CLEAN_INSTALL_DIR}/mystic .
	rm -rf ${CLEAN_INSTALL_DIR}
fi

# Tar up the data dir and add it back to the main install
echo "Zipping up data dir..."
tar czf mystic/data.tar.gz data/

# That dir is now ready for the image
tar czf ../mystic.tar.gz mystic
echo "OK mystic.tar.gz can be moved to your docker build"