# Base image: Latest Debian
FROM debian:latest

# Step 1: Update and install base dependencies
RUN apt-get update -y && \
    apt-get install -y \
    mingw-w64 \
    cmake \
    pkg-config \
    libgnutls28-dev \
    curl \
    tar \
    m4 \
    gcc-mingw-w64-x86-64 \
    meson \
    ninja-build \
    fluid

# Step 2: Set environment variables for MinGW tools
ENV CC=/usr/bin/x86_64-w64-mingw32-gcc \
    CXX=/usr/bin/x86_64-w64-mingw32-g++ \
    RC=/usr/bin/x86_64-w64-mingw32-windres \
    CMAKE_C_FLAGS="-isystem /usr/lib/gcc/x86_64-w64-mingw32/12-win32/include" \
    CMAKE_CXX_FLAGS="-isystem /usr/lib/gcc/x86_64-w64-mingw32/12-win32/include" \
    CMAKE="cmake -DCMAKE_SYSTEM_NAME=Windows \
       -DCMAKE_INSTALL_PREFIX=/usr/x86_64-w64-mingw32 \
       -DCMAKE_C_COMPILER=/usr/bin/x86_64-w64-mingw32-gcc \
       -DCMAKE_CXX_COMPILER=/usr/bin/x86_64-w64-mingw32-g++ \
       -DCMAKE_SYSROOT=/usr/x86_64-w64-mingw32 \
       -DCMAKE_FIND_ROOT_PATH=/usr/x86_64-w64-mingw32 \
       -DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM=NEVER \
       -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY \
       -DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=ONLY"

# Step 3: Download and build zlib
RUN curl -LO https://zlib.net/zlib-1.3.1.tar.gz && \
    tar -xvzf zlib-1.3.1.tar.gz && \
    cd zlib-1.3.1 && \
    ./configure --prefix=/usr/x86_64-w64-mingw32 && \
    sed -ri 's/(LDSHAREDLIBC=)-lc/\1/;' Makefile && \
    make && \
    make install

# Step 4: Download and build libpng
RUN curl -LO https://download.sourceforge.net/libpng/libpng-1.6.44.tar.gz && \
    tar -xvzf libpng-1.6.44.tar.gz && \
    cd libpng-1.6.44 && \
    ./configure --prefix=/usr/x86_64-w64-mingw32 --host=x86_64-w64-mingw32 && \
    make && \
    make install

# Step 5: Download and build FLTK
RUN curl -LO https://www.fltk.org/pub/fltk/1.3.9/fltk-1.3.9-source.tar.gz && \
    tar xzf fltk-1.3.9-source.tar.gz && \
    cd fltk-1.3.9 && \
    $CMAKE -DZLIB_LIBRARY=/usr/x86_64-w64-mingw32/lib/libz.a \
           -DZLIB_INCLUDE_DIR=/usr/x86_64-w64-mingw32/include \
           -DPNG_LIBRARY=/usr/x86_64-w64-mingw32/lib/libpng.a \
           -DPNG_INCLUDE_DIR=/usr/x86_64-w64-mingw32/include \
           -G "Unix Makefiles" . && \
    make && \
    make install

# Step 6: Download and build libjpeg
RUN curl -LO http://www.ijg.org/files/jpegsrc.v9f.tar.gz && \
    tar -xvzf jpegsrc.v9f.tar.gz && \
    cd jpeg-9f && \
    ./configure --prefix=/usr/x86_64-w64-mingw32 --host=x86_64-w64-mingw32 --enable-shared && \
    make && \
    make install

# Step 7: Download and build nettle
RUN curl -LO https://ftp.gnu.org/gnu/nettle/nettle-3.10.tar.gz && \
    tar -xvzf nettle-3.10.tar.gz && \
    cd nettle-3.10 && \
    ./configure --prefix=/usr/x86_64-w64-mingw32 --host=x86_64-w64-mingw32 && \
    make && \
    make install

# Step 8: Download and build GMP
RUN curl -LO https://gmplib.org/download/gmp/gmp-6.3.0.tar.xz && \
    tar -xf gmp-6.3.0.tar.xz && \
    cd gmp-6.3.0 && \
    ./configure --prefix=/usr/x86_64-w64-mingw32 --host=x86_64-w64-mingw32 && \
    make && \
    make install

# Step 9: Download and build pixman
RUN curl -LO https://cairographics.org/releases/pixman-0.43.4.tar.gz && \
    tar -xvzf pixman-0.43.4.tar.gz && \
    cd pixman-0.43.4 && \
    echo "[binaries]" > cross-mingw.txt && \
    echo "c = '/usr/bin/x86_64-w64-mingw32-gcc'" >> cross-mingw.txt && \
    echo "cpp = '/usr/bin/x86_64-w64-mingw32-g++'" >> cross-mingw.txt && \
    echo "ar = '/usr/bin/x86_64-w64-mingw32-ar'" >> cross-mingw.txt && \
    echo "strip = '/usr/bin/x86_64-w64-mingw32-strip'" >> cross-mingw.txt && \
    echo "pkgconfig = '/usr/bin/x86_64-w64-mingw32-pkg-config'" >> cross-mingw.txt && \
    echo "windres = '/usr/bin/x86_64-w64-mingw32-windres'" >> cross-mingw.txt && \
    echo "[host_machine]" >> cross-mingw.txt && \
    echo "system = 'windows'" >> cross-mingw.txt && \
    echo "cpu_family = 'x86_64'" >> cross-mingw.txt && \
    echo "cpu = 'x86_64'" >> cross-mingw.txt && \
    echo "endian = 'little'" >> cross-mingw.txt && \
    echo "[paths]" >> cross-mingw.txt && \
    echo "prefix = '/usr/x86_64-w64-mingw32'" >> cross-mingw.txt && \
    meson setup builddir --cross-file cross-mingw.txt --prefix=/usr/x86_64-w64-mingw32 --buildtype=release && \
    ninja -C builddir && \
    ninja -C builddir install

# Step 10: Download and build TigerVNC
RUN apt install -y git
RUN git clone https://github.com/TigerVNC/tigervnc.git

# This is the documented way to run cmake. It results in error: "Could NOT find ZLIB (missing: ZLIB_LIBRARY ZLIB_INCLUDE_DIR)"
# RUN cd tigervnc && mkdir build && cd build && \
#   CC=/usr/bin/x86_64-w64-mingw32-gcc \
#   CXX=/usr/bin/x86_64-w64-mingw32-g++ \
#   RC=/usr/bin/x86_64-w64-mingw32-windres \
#   cmake -G "Unix Makefiles" -DCMAKE_SYSTEM_NAME=Windows \
#     -DCMAKE_AR=/usr/bin/x86_64-w64-mingw32-ar \
#     -DCMAKE_RANLIB=/usr/bin/x86_64-w64-mingw32-ranlib \
#     ..

# This is my current best attempt.
RUN cd tigervnc && \
    mkdir build && \
    cd build && \
    $CMAKE -G "Unix Makefiles" \
           -DZLIB_LIBRARY=/usr/x86_64-w64-mingw32/lib/libz.so \
           -DZLIB_INCLUDE_DIR=/usr/x86_64-w64-mingw32/include \
           -DPIXMAN_LIBRARY=/usr/x86_64-w64-mingw32/bin/libpixman-1-0.dll \
           -DPIXMAN_LIBRARIES=/usr/x86_64-w64-mingw32/lib \
           -DPIXMAN_INCLUDE_DIR=/usr/x86_64-w64-mingw32/include/pixman-1 \
           -DJPEG_LIBRARY=/usr/x86_64-w64-mingw32/bin/libjpeg-9.dll \
           -DJPEG_INCLUDE_DIR=/usr/x86_64-w64-mingw32/include \
           -DNETTLE_LIBRARY=/usr/x86_64-w64-mingw32/lib/libnettle.so \
           -DNETTLE_INCLUDE_DIR=/usr/x86_64-w64-mingw32/include \
           -DGMP_LIBRARY=/usr/x86_64-w64-mingw32/lib/libgmp.so \
           -DGMP_INCLUDE_DIR=/usr/x86_64-w64-mingw32/include \
           -DFLTK_INCLUDE_DIR=/usr/local/include \
           -DFLTK_LIBRARY=/usr/lib/x86_64-w64-mingw32/lib/libfltk.a \
           -DFLTK_IMAGES_LIBRARY=/usr/x86_64-w64-mingw32/lib/libfltk_images.a \
           -DCMAKE_AR=/usr/bin/x86_64-w64-mingw32-ar \
           -DCMAKE_RANLIB=/usr/bin/x86_64-w64-mingw32-ranlib \
           -DENABLE_NLS=OFF \
           -DLC_MESSAGES=0 \
           -DPIXMAN_FOUND=TRUE \
           ..
RUN cd tigervnc/build && \
    make vncviewer

# The cmake command works, but then during compilation there is fatal error: pixman.h: No such file or directory
# Note that the following files exist:
# find /usr -name '*pixman*'
# /usr/lib/x86_64-linux-gnu/libpixman-1.so.0
# /usr/lib/x86_64-linux-gnu/libpixman-1.so.0.42.2
# /usr/share/doc/libpixman-1-0
# /usr/share/lintian/overrides/libpixman-1-0
# /usr/x86_64-w64-mingw32/bin/libpixman-1-0.dll
# /usr/x86_64-w64-mingw32/include/pixman-1
# /usr/x86_64-w64-mingw32/include/pixman-1/pixman-version.h
# /usr/x86_64-w64-mingw32/include/pixman-1/pixman.h
# /usr/x86_64-w64-mingw32/lib/libpixman-1.dll.a
# /usr/x86_64-w64-mingw32/lib/pkgconfig/pixman-1.pc