#!/usr/bin/env bash

ME=$(basename $0)

# WARNING: changing this to yes will leave files/directories present in the source
#          tree which are not currently part of the .hgignore file
DEBUG=no

#####################################################################
#   U S A G E
#####################################################################
usage() {
  cat <<EOF
Usage: $ME [ destination-directory ]

This script creates a flatpak from this source. The flatpak will end
up in the root directory of this source tree or in the optional directory
passed.

The current directory should either be the root directory of the source
or the source distribution/flatpak directory.

Pre-requisities:
    flatpak
    flatpak-builder
    xdg-desktop-portal-gtk (log out or reboot after install)

Known issues:
  - still uses gtk2
EOF
  exit 1
}
if [ "$1" = "-h" ]; then
  usage
fi

#####################################################################
#   D E T E R M I N E   V E R S I O N
#####################################################################
PROGRAM_VERSION=ProgramVersion.cmake
if [ ! -f $PROGRAM_VERSION ]; then
  cd ../..
fi
if [ ! -f $PROGRAM_VERSION ]; then
  echo
  echo "ERROR: not in the correct directory"
  echo
  usage
  exit 1
fi
MOD_PROGRAM_VERSION=Modified${PROGRAM_VERSION}
cat <<EOF >$MOD_PROGRAM_VERSION
include($PROGRAM_VERSION)
if (XTRKCAD_SHOW_VERSION)
    # used by distribution/flatpak/buildFlatpak.sh
    message(\${XTRKCAD_VERSION})
endif()
EOF
XTRKCAD_VERSION=$(cmake -DXTRKCAD_SHOW_VERSION=1 -P $MOD_PROGRAM_VERSION 2>&1)
rm -f $MOD_PROGRAM_VERSION
if [ -z "$XTRKCAD_VERSION" ]; then
  echo "Unable to determine version; is the source correct?"
  exit 1
fi

#####################################################################
#   S E T   V A R I A B L E S
#####################################################################
WORKING_FILE=xtrkcad-source.tar.gz
FP_BUILD_DIR=workDir
FP_STATE_DIR=${FP_STATE_DIR:-$HOME/.flatpak-builder-xtrkcad}
FP_REPO=dummy_repo
FP_DEST_DIR=${1:-$PWD}
if [ ! -d "$FP_DEST_DIR" ]; then
  echo "\"$FP_DEST_DIR\" is not a directory"
  exit 1
fi
BETA_SUFFIX=""
LOCAL_SUBDIR=""
if [[ $XTRKCAD_VERSION = *[bB]eta[0-9]* ]]; then
  BETA_SUFFIX="-beta"
  #LOCAL_SUBDIR="local/"
fi
if [ $DEBUG != "no" ]; then
  XTRKCAD_VERSION=${XTRKCAD_VERSION}-debug
fi
XTRKCADPREFIX=/app
XTRKCADSHARE=share/xtrkcad${BETA_SUFFIX}
XTRKCADLIB=${XTRKCADPREFIX}/${LOCAL_SUBDIR}${XTRKCADSHARE}
XTRKCADBIN=${XTRKCADPREFIX}/${LOCAL_SUBDIR}bin/xtrkcad${BETA_SUFFIX}
FP_XTRKCAD_ORG=org.xtrkcad.xtrkcad${BETA_SUFFIX}
FP_MANIFEST=${FP_XTRKCAD_ORG}.yaml
FP_DESKTOP=${FP_XTRKCAD_ORG}.desktop
FP_META=${FP_XTRKCAD_ORG}.metainfo.xml
XDG_DATA=${XDG_DATA_HOME:-$HOME/.local/share}
INKSCAPE_IMAGE=Inkscape.AppImage
INKSCAPE_TAR="Inkscape.tar.gz"

#####################################################################
#   C L E A N U P
#####################################################################
cleanup() {
  trap - 0 1 2 3 15 21 22
  if [ "$DEBUG" = "no" ]; then
    rm -f $WORKING_FILE
    rm -rf $FP_BUILD_DIR
    find $FP_STATE_DIR -name '*build-debug' | xargs -r rm
    # removing the flatpak state dir forces fresh build
    #rm -rf $FP_STATE_DIR
    rm -rf $FP_REPO
    # manifest dynamically built, but if you want to look comment out
    rm -f $FP_MANIFEST
    rm -f $FP_DESKTOP
    rm -f $FP_META
    rm -f $INKSCAPE_IMAGE
    # removing existing inkscape tar file forces download of latest
    #rm -f $XDG_DATA/$INKSCAPE_TAR
    rm -f $MOD_PROGRAM_VERSION
  fi
}
trap cleanup 0 1 2 3 15 21 22

#####################################################################
#   S T A R T   F R E S H
#
#   Normally not run in order to take advantage of cached files
#####################################################################
start_fresh() {
  rm -f $WORKING_FILE
  rm -rf $FP_BUILD_DIR
  # removing the flatpak state dir forces fresh build
  rm -rf $FP_STATE_DIR
  rm -rf $FP_REPO
  # manifest dynamically built, but if you want to look comment out
  rm -f $FP_MANIFEST
  rm -f $FP_DESKTOP
  rm -f $FP_META
  rm -f $INKSCAPE_IMAGE
  # removing existing inkscape tar file forces download of latest
  rm -f $XDG_DATA/$INKSCAPE_TAR
  flatpak uninstall -y --user org.inkscape.Inkscape
}

#####################################################################
#   F L U S H   C A C H E
#
#   Prevent cache from growing and growing during development
#####################################################################
flush_cache() {
  # in meg
  MAX_CACHE_SIZE=1000

  if [ ! -d "$FP_STATE_DIR" ]; then
    return
  fi
  CACHE_SIZE=$(du -sm $FP_STATE_DIR | cut -f1)
  if [[ $CACHE_SIZE -ge $MAX_CACHE_SIZE ]]; then
    echo "Removing build cache .."
    echo "CACHE_SIZE=$CACHE_SIZE, MAX_CACHE_SIZE=$MAX_CACHE_SIZE"
    rm -rf $FP_STATE_DIR
    sleep 2
  fi
}

#####################################################################
#   M A K E   S O U R C E   T A R B A L L
#####################################################################
make_source_tar() {
  tar -czf ../$WORKING_FILE --exclude=.hg .
  mv ../$WORKING_FILE .
}

#####################################################################
#   G E T   A N D   E X T R A C T   I N K S C A P E
#####################################################################
get_extract_inkscape() {
  flatpak remote-add --if-not-exists --user flathub https://flathub.org/repo/flathub.flatpakrepo
  flatpak install -y --user flathub org.inkscape.Inkscape
  if [ ! -f $XDG_DATA/$INKSCAPE_TAR ]; then
    echo "creating tarball of inkscape ..."
    flatpak run --user --command=tar org.inkscape.Inkscape -czf $XDG_DATA/$INKSCAPE_TAR --exclude='*/__pycache__*' /app 2>/dev/null
  fi
}

#####################################################################
#   B U I L D   M A N I F E S T
#####################################################################
build_manifest() {
  cat <<EOF >$FP_DESKTOP
[Desktop Entry]
Name=XTrackCAD${BETA_SUFFIX} (flatpak)
Comment=Design model railroad layouts
Exec=run-xtrkcad.sh
Icon=${FP_XTRKCAD_ORG}
Terminal=false
Type=Application
Categories=Graphics
EOF
  DT="$(date '+%Y-%m-%d')"
  cat <<EOF >$FP_META
<?xml version="1.0" encoding="UTF-8"?>
<component type="desktop-application">
  <id>${FP_XTRKCAD_ORG}</id>
  <name>XTrackCAD${BETA_SUFFIX} (flatpak)</name>
  <summary>Design model railroad layouts</summary>
  <description>
    <p>XTrackCAD is a CAD (computer-aided design) program for designing model railroad layouts.</p>
  </description>
  <releases>
    <release version="${XTRKCAD_VERSION}" date="${DT}"/>
  </releases>
  <metadata_license>CC0-1.0</metadata_license>
  <project_license>GPL-3.0</project_license>
</component>
EOF
  cat <<EOF >$FP_MANIFEST
id: $FP_XTRKCAD_ORG
runtime: org.gnome.Platform
runtime-version: '48'
sdk: org.gnome.Sdk
command: /app/bin/run-xtrkcad.sh
modules:
  - name: libzip
    buildsystem: cmake
    config-opts:
      - -DBUILD_DOC=OFF
      - -DBUILD_EXAMPLES=OFF
      - -DBUILD_REGRESS=OFF
      - -DBUILD_TOOLS=OFF
      - -DBUILD_OSSFUZZ=OFF
      - -DCMAKE_INSTALL_PREFIX=/app/libzip
      - -DBUILD_SHARED_LIBS=OFF
      - -DENABLE_COMMONCRYPTO=OFF
      - -DENABLE_GNUTLS=OFF
      - -DENABLE_MBEDTLS=OFF
      - -DENABLE_OPENSSL=OFF
      - -DENABLE_WINDOWS_CRYPTO=OFF
      - -DENABLE_BZIP2=OFF
      - -DENABLE_LZMA=OFF
      - -DENABLE_ZSTD=OFF
    sources:
      - type: archive
        url: https://github.com/nih-at/libzip/releases/download/v1.8.0/libzip-1.8.0.tar.gz
        sha256: 30ee55868c0a698d3c600492f2bea4eb62c53849bcf696d21af5eb65f3f3839e
    post-install:
      - mkdir -p /app/include
      - mkdir -p /app/lib
      - ln -s /app/libzip/include/* /app/include
      - ln -s /app/libzip/lib/libzip.a /app/lib
  - name: mxml
    buildsystem: simple
    build-commands:
      - ./configure --exec_prefix=/app/mxml --prefix=/app/mxml
      - make
      - make install
      - mkdir -p /app/include
      - mkdir -p /app/lib
      - ln -s /app/mxml/include/* /app/include
      - ln -s /app/mxml/lib/* /app/lib
    sources:
      - type: archive
# v4 changes names from mxml to mxml4 whch we haven't migrated yet
        url: https://github.com/michaelrsweet/mxml/archive/refs/tags/v3.3.1.tar.gz
        sha256: 59eba16ce43765f2e2a6cf4873a58d317be801f1e929647d85da9f171e41e9ac
  - name: gtk2
    buildsystem: autotools
    build-options:
      env:
        CFLAGS: "-Wno-incompatible-pointer-types -Wno-implicit-int"
        CXXFLAGS: "-Wno-incompatible-pointer-types -Wno-implicit-int"
    sources:
      - type: archive
        url: "https://gitlab.gnome.org/GNOME/gtk/-/archive/2.24.33/gtk-2.24.33.tar.gz"
        sha256: dedfaf04952434c5e3e1ce4de373ac7474d12da2d99b0afc947ef1983df64601
    config-opts:
      - "--prefix=${XTRKCADPREFIX}"
      - "--disable-introspection"
      - "--enable-shared"
      - "--disable-static"
      - "--enable-gtk-doc-html=no"
#    make-args:
#      - "V=1"
#      - "-j 1"
  - name: inkscape
    buildsystem: simple
    sources:
      - type: file
        path: $XDG_DATA/$INKSCAPE_TAR
        dest-filename: $INKSCAPE_TAR
    build-options:
      env:
        PKG_CONFIG_PATH: "/app/lib/pkgconfig:/usr/lib/pkgconfig"
        LD_LIBRARY_PATH: "/app/lib:/usr/lib:/usr/lib/x86_64-linux-gnu"
    build-commands:
      - tar -xzf $INKSCAPE_TAR --skip-old-files
      - mkdir -p /app/inkscape
      - cp -pr --update app/* /app/inkscape 2>&1
#  - name: debug
#    buildsystem: simple
#    no-make-install: true
#    build-commands:
#      - echo "D E B U G   B E G I N"
#      - find /app -type f -o -type l
#      - echo "D E B U G   E N D"
  - name: xtrkcad
    buildsystem: simple
    sources:
      - type: inline
        dest-filename: run-xtrkcad.sh
        contents: |
          #!/bin/sh
          export XTRKCADLIB=${XTRKCADLIB}
          export XTRKCADBETALIB=${XTRKCADLIB}
          # if no access due to sandboxing, copy
          #mkdir -p ~/.local/${XTRKCADSHARE}
          #rm -rf ~/.local/${XTRKCADSHARE}/*
          #cp -pr ${XTRKCADLIB}/* ~/.local/${XTRKCADSHARE}
          #export XTRKCADLIB=~/.local/${XTRKCADSHARE}
          #export XTRKCADBETALIB=~/.local/${XTRKCADSHARE}
          # there is no access to host gtk3 modules
          unset GTK3_MODULES
          unset GTK_MODULES
          BOOKMARK="file://\$XTRKCADLIB xtrkcad-lib${BETA_SUFFIX}"
          FILE="\$HOME/.gtk-bookmarks"
          touch \$FILE
          if ! grep -Fx "\$BOOKMARK" "\$FILE" >/dev/null; then
            echo "\$BOOKMARK" >> "\$FILE"
          fi
          exec ${XTRKCADBIN} "\$@"
      - type: inline
        dest-filename: run-xtrkcad-debug.sh
        contents: |
          #!/bin/sh
          export XTRKCADLIB=${XTRKCADLIB}
          export XTRKCADBETALIB=${XTRKCADLIB}
          # if no access due to sandboxing, copy
          #mkdir -p ~/.local/${XTRKCADSHARE}
          #rm -rf ~/.local/${XTRKCADSHARE}/*
          #cp -pr ${XTRKCADLIB}/* ~/.local/${XTRKCADSHARE}
          #export XTRKCADLIB=~/.local/${XTRKCADSHARE}
          #export XTRKCADBETALIB=~/.local/${XTRKCADSHARE}
          # there is no access to host gtk3 modules
          unset GTK3_MODULES
          unset GTK_MODULES
          BOOKMARK="file://\$XTRKCADLIB xtrkcad-lib${BETA_SUFFIX}"
          FILE="\$HOME/.gtk-bookmarks"
          touch \$FILE
          if ! grep -Fx "\$BOOKMARK" "\$FILE" >/dev/null; then
            echo "\$BOOKMARK" >> "\$FILE"
          fi
          # set up for logging by day the app started
          DOW=\$(date '+%a')
          LOGFILE="\$HOME/.xtrkcad${BETA_SUFFIX}/xtrkcad_\${DOW}.log"
          LOG_ALLMODULES=" \\
              -d Bezier=1 \\
              -d block=1 \\
              -d carDlgList=1 \\
              -d carDlgState=1 \\
              -d carInvList=1 \\
              -d carList=1 \\
              -d command=1 \\
              -d control=1 \\
              -d Cornu=1 \\
              -d cornuturnoutdesigner=1 \\
              -d curve=1 \\
              -d curveSegs=1 \\
              -d dumpElev=1 \\
              -d ease=1 \\
              -d endPt=1 \\
              -d group=1 \\
              -d init=1 \\
              -d join=1 \\
              -d locale=1 \\
              -d malloc=0 \\
              -d mapsize=1 \\
              -d modify=1 \\
              -d mouse=0 \\
              -d pan=1 \\
              -d paraminput=1 \\
              -d paramlayout=1 \\
              -d params=1 \\
              -d paramupdate=1 \\
              -d playbackcursor=1 \\
              -d print=1 \\
              -d profile=1 \\
              -d readTracks=1 \\
              -d redraw=1 \\
              -d regression=1 \\
              -d scale=1 \\
              -d sensor=1 \\
              -d shortPath=1 \\
              -d signal=1 \\
              -d splitturnout=1 \\
              -d Structure=1 \\
              -d suppresscheckpaths=1 \\
              -d switchmotor=1 \\
              -d timedrawgrid=1 \\
              -d timedrawtracks=1 \\
              -d timemainredraw=1 \\
              -d timereadfile=1 \\
              -d track=1 \\
              -d trainMove=1 \\
              -d trainPlayback=1 \\
              -d traverseBezier=1 \\
              -d traverseBezierSegs=1 \\
              -d traverseCornu=1 \\
              -d traverseJoint=1 \\
              -d traverseTurnout=1 \\
              -d turnout=1 \\
              -d undo=1 \\
              -d zoom=1 \\
          "
          rm -f \$LOGFILE
          touch \$LOGFILE
          exec ${XTRKCADBIN} -v -l \$LOGFILE \$LOG_ALLMODULES "\$@"
      - type: file
        path: ./$FP_DESKTOP
        dest-filename: $FP_DESKTOP
      - type: file
        path: ./$FP_META
        dest-filename: $FP_META
      - type: file
        path: ./$WORKING_FILE
        dest-filename: $WORKING_FILE
    build-options:
      env:
        PKG_CONFIG_PATH: "/app/lib/pkgconfig:/app/libzip/lib/pkgconfig:/app/libzip/lib64/pkgconfig:/app/mxml/lib/pkgconfig:/app/inkscape/lib/pkgconfig:/usr/lib/pkgconfig"
        LD_LIBRARY_PATH: "/app/lib:/app/inkscape/lib:/app/libzip/lib:/app/libzip/lib64:/app/mxml/lib:/usr/lib:/usr/lib/x86_64-linux-gnu"
        PATH: "/app/bin:/app/inkscape/bin:/usr/bin"
    build-commands: 
      - |
        install -Dm755 run-xtrkcad-debug.sh /app/bin/run-xtrkcad-debug.sh
        install -Dm755 run-xtrkcad.sh /app/bin/run-xtrkcad.sh
        install -Dm644 $FP_DESKTOP /app/share/applications/${FP_DESKTOP}
        install -Dm644 $FP_META /app/share/metainfo/${FP_META}
        mkdir src
        mkdir build
        cd src
        tar xzf ../$WORKING_FILE
        cd ../build
        XTRKCAD_CMAKE_DEBUG="-DCMAKE_TARGET_PROPERTIES=1 -DCMAKE_FIND_DEBUG_MODE=1"
        XTRKCAD_CMAKE_DEBUG=""
        cmake -G Ninja \$XTRKCAD_CMAKE_DEBUG -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=$XTRKCADPREFIX -DCMAKE_C_FLAGS="-I/app/include -Wpointer-sign" ../src
        mkdir -p /app/share/icons/hicolor/64x64/apps/
        if false; then
          # debug: flatpak ps
          #        flatpak enter <instance-id> bash
          echo -e "\\nSLEEPING for debug purposes"
          echo -e "\\nin another window, run\\n  flatpak ps\\n  flatpak enter <instance-id> bash\\n"
          echo "export PKG_CONFIG_PATH=\"/app/lib/pkgconfig:/app/libzip/lib/pkgconfig:/app/libzip/lib64/pkgconfig:/app/mxml/lib/pkgconfig:/app/inkscape/lib/pkgconfig:/usr/lib/pkgconfig\""
          echo "export LD_LIBRARY_PATH=\"/app/lib:/app/inkscape/lib:/app/libzip/lib:/app/libzip/lib64:/app/mxml/lib:/usr/lib:/usr/lib/x86_64-linux-gnu\""
          echo "export PATH=\"/app/bin:/app/inkscape/bin:/usr/bin:\\\$PATH\""
          echo "cd /run/build/xtrkcad/build  # to check build environment or build with ninja"
          echo "cd /run/build/xtrkcad/src    # the source"
          echo "# sorry no editor in the Sdk"
          sleep 3600
        else
          ninja -v
          ninja -v install
          cp $XTRKCADPREFIX/${XTRKCADSHARE}/pixmaps/xtrkcad.png /app/share/icons/hicolor/64x64/apps/${FP_XTRKCAD_ORG}.png
          #cp /run/build/xtrkcad/src/app/lib/xtrkcad.png /app/share/icons/hicolor/64x64/apps/${FP_XTRKCAD_ORG}.png
          cd ..
          # what is not needed in final flatpak
          rm -rf /app/inkscape
          rm -rf /app/include
          rm -rf /app/share/man
          rm -rf /app/lib64/cmake
          rm -rf /app/share/doc
          rm -rf /app/share/gtk-2.0/demo
          rm -f /app/lib/libmxml*
          rm -f /app/lib/pkgconfig
          rm -rf /app/mxml
          rm -rf /app/libzip
          rm -f /app/lib/libzip.a
          rm -f /app/bin/gtk*
          rm -rf /app/share/aclocal
        fi
finish-args:
  - --socket=x11
  - --socket=wayland
  - --socket=session-bus
  - --socket=cups
  - --socket=pulseaudio
  - --share=ipc
  - --device=all
  - --filesystem=~/.xtrkcad${BETA_SUFFIX}:create
  - --filesystem=~/.themes
  - --filesystem=~/.icons
  - --filesystem=~/.config:create
  - --filesystem=~/.gtk-bookmarks
  - --filesystem=~/.local/share:create
  # if home directory access not allowed, define some common ones for plans
  #- --filesystem=~/.local/${XTRKCADSHARE}:create
  #- --filesystem=~/Documents:create
  #- --filesystem=~/xtrkcad:create
  #- --filesystem=~/XtrackCAD:create
  - --filesystem=~/Downloads
  - --filesystem=xdg-data/applications
  - --filesystem=xdg-data/icons
  # home directory access
  - --filesystem=home
  # full system access
  #- --filesystem=host
  - --talk-name=org.gnome.portal.*
  - --talk-name=org.gnome.*
  - --talk-name=org.gnome.portal.*
  - --system-talk-name=org.gnome.*
EOF
}

#####################################################################
#   B U I L D   F L A T P A K
#####################################################################
build_flatpak() {
  flatpak remote-add --if-not-exists --user flathub https://flathub.org/repo/flathub.flatpakrepo
  flatpak-builder --state-dir=$FP_STATE_DIR --force-clean --user --install --repo=$FP_REPO --install-deps-from=flathub $FP_BUILD_DIR $FP_MANIFEST
  ARCH=$(uname -m)
  FP_NAME=xtrkcad-${XTRKCAD_VERSION}.${ARCH}.flatpak
  rm -f $FP_NAME
  flatpak build-bundle ${FP_REPO} $FP_NAME $FP_XTRKCAD_ORG
  if [ -f $FP_NAME ]; then
    mv $FP_NAME $FP_DEST_DIR/$FP_NAME 2>/dev/null
    echo "========================================================================"
    echo "$(ls $FP_DEST_DIR/$FP_NAME) created"
    echo
    flatpak info $FP_XTRKCAD_ORG
    echo "========================================================================"
  else
    echo "========================================================================"
    echo "problem creating $FP_NAME "
    echo "========================================================================"
  fi
}

#####################################################################
#   M A I N
#####################################################################
#start_fresh
echo "========================================================================"
echo "Making xtrkcad-${XTRKCAD_VERSION}.flatpak"
echo "========================================================================"
sleep 3
flush_cache
make_source_tar
get_extract_inkscape
build_manifest
build_flatpak