#!/usr/bin/env bash
# Copyright (C) 2021 - 2022 by Pedro Mendes, Rector and Visitors of the 
# University of Virginia, University of Heidelberg, and University 
# of Connecticut School of Medicine. 
# All rights reserved. 

# The values below are updated by the build process
VERSION=%VERSION%
PACKAGE_NAME=%PACKAGE_NAME%

echo ""
echo "COPASI ${VERSION} Self Extracting Installer"
echo ""

show_help() {
    echo "Install COPASI ${VERSION}"
    echo "  Usage: $(basename $0) [-t tmp_dir] [-i install_dir] [-d desktop_dir]"
    echo "Only extract COPASI ${VERSION} to destination (default: $(pwd))"
    echo "  Usage: $(basename $0) -e [destination]"
}

prompt_for_dir() {
    RESULT="$(echo $3 | sed -e 's?^~?'"${HOME}"'?')"
    while :
    do
        if [ _"${RESULT}" != _ ]; then
            [ -d "${RESULT}" ] || mkdir -p "${RESULT}"
            [ -d "${RESULT}" ] && [ -w "${RESULT}" ] && break
        fi
        
        read -e -i "$1" -p "$2 " RESULT
        RESULT="$(echo ${RESULT} | sed -e 's?^~?'"${HOME}"'?')"
    done

    echo "$2 \"${RESULT}\""
}

EXTRACT_DIR=
TMP_DIR=
DESKTOP_DIR=
INSTALL_DIR=

shopt -s globstar

OPTIND=1

while getopts "het:d:i:" opt; do
    case "$opt" in
        h)
            show_help
            exit 0
            ;;
        e)
            shift
            EXTRACT_DIR="${@:-$(pwd)}"
            ;;
        t)
            TMP_DIR="$OPTARG"
            ;;
        d)
            DESKTOP_DIR="$OPTARG"
            ;;
        i)
            INSTALL_DIR="$OPTARG"
            ;;
    esac
done

shift $((OPTIND-1))

# Find where the archive starts
ARCHIVE=$(awk '/^__ARCHIVE_BELOW__/ {print NR + 1; exit 0; }' "$0")

# We have an extract directory and will only extract to it
if [ _"${EXTRACT_DIR}" != _ ]; then
    prompt_for_dir "${EXTRACT_DIR}" "Extract directory:" "${EXTRACT_DIR}"
    EXTRACT_DIR="$(readlink -f ${RESULT})"
    
    echo tail -n+$ARCHIVE "$0" '| 'tar -xzv -C "${EXTRACT_DIR}"
    tail -n+$ARCHIVE "$0" | tar -xzv -C "${EXTRACT_DIR}"
    exit 0
fi

prompt_for_dir "${TMP-${TEMP-/tmp}}" "Temp directory:" "${TMP_DIR}"
TMP_DIR="$(readlink -f ${RESULT})"

EXTRACT_DIR=$(mktemp -d "${TMP_DIR}"/copasi.XXXXXX)

echo tail -n+$ARCHIVE "$0" '| 'tar -xzv -C "${EXTRACT_DIR}"
tail -n+$ARCHIVE "$0" | tar -xzv -C "${EXTRACT_DIR}"

prompt_for_dir "/opt/COPASI/${VERSION}" "Installation directory:" "${INSTALL_DIR}"
INSTALL_DIR="$(readlink -f ${RESULT})"

echo cp -r "${EXTRACT_DIR}"/${PACKAGE_NAME}/'*' "${INSTALL_DIR}"
cp -r "${EXTRACT_DIR}"/${PACKAGE_NAME}/* "${INSTALL_DIR}"

if [ -w "/usr/share/applications" ]; then 
    DEFAULT_DESKTOP_DIR="/usr/share/applications"
else
    DEFAULT_DESKTOP_DIR="~/.local/share/applications"
fi

prompt_for_dir "${DEFAULT_DESKTOP_DIR}" "Desktop file location:" "${DESKTOP_DIR}"
DESKTOP_DIR="$(readlink -f ${RESULT})"

NAME=COPASI
DESKTOP_NAME=COPASI

if [ -e "${DESKTOP_DIR}"/COPASI.desktop ]; then
    echo COPASI desktop file exist!
    echo You may overwrite it or create a version specific file.

    while :
    do
        read -e -i "n" -p 'Create version specific desktop file [y|n]: ' RESULT

        [ _${RESULT} = _n ] && break
        [ _${RESULT} = _y ] && break
    done

    if [ _${RESULT} = _y ]; then
        NAME="COPASI ${VERSION}"
        DESKTOP_NAME="COPASI-${VERSION}"
    fi
fi

echo "[Desktop Entry]
Encoding=UTF-8
Version=1.0
Exec=${INSTALL_DIR}/bin/CopasiUI %u
Icon=${INSTALL_DIR}/share/copasi/icons/Copasi48-Alpha.xpm
MimeType=x-scheme-handler/copasi;application/x-copasi
Name=${NAME}
GenericName=Biochemical simulation
NoDisplay=false
Type=Application
Categories=Science;Utility" '> '"${DESKTOP_DIR}/${DESKTOP_NAME}".desktop

echo "[Desktop Entry]
Encoding=UTF-8
Version=1.0
Exec=${INSTALL_DIR}/bin/CopasiUI %u
Icon=${INSTALL_DIR}/share/copasi/icons/Copasi48-Alpha.xpm
MimeType=x-scheme-handler/copasi;application/x-copasi
Name=${NAME}
GenericName=Biochemical simulation
NoDisplay=false
Type=Application
Categories=Science;Utility" > "${DESKTOP_DIR}/${DESKTOP_NAME}".desktop

if command -v xdg-settings &> /dev/null ; then
    xdg-settings set default-url-scheme-handler copasi "${DESKTOP_NAME}".desktop
fi

if command -v update-desktop-database &> /dev/null ; then
    update-desktop-database /usr/share/applications ~/.local/share/applications/
fi

if command -v xdg-mime &> /dev/null ; then
    xdg-mime install ${INSTALL_DIR}/share/copasi/COPASI-mime.xml
fi

rm -rf "${EXTRACT_DIR}"

exit 0

__ARCHIVE_BELOW__