# Use Debian 12 (Bookworm) slim as the base image
FROM debian:12-slim

# Set frontend to noninteractive to avoid prompts during package installation
ENV DEBIAN_FRONTEND=noninteractive
ENV TZ=Etc/UTC

# Install necessary dependencies using apt-get
# Includes build tools, git, python, cmake, ninja, curl, unzip, ca-certs,
# and development libraries for X11, GL, fontconfig, and Skia dependencies.
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    build-essential \
    git \
    python3 \
    cmake \
    ninja-build \
    curl \
    unzip \
    ca-certificates \
    libx11-dev \
    libxcursor-dev \
    libxi-dev \
    libgl1-mesa-dev \
    libfontconfig1-dev \
    libexpat1-dev \
    libicu-dev \
    libjpeg-turbo8-dev \
    libpng-dev \
    libwebp-dev \
    zlib1g-dev \
    libfreetype6-dev \
    libharfbuzz-dev \
    # Clean up apt lists to reduce image size
    && rm -rf /var/lib/apt/lists/*

# Set the working directory
WORKDIR /app

# Copy the pre-downloaded source code into the image
# This assumes prepare_sources.sh has been run locally first
COPY ./src /src

# Set PATH for depot_tools
ENV PATH="/src/depot_tools:${PATH}"

# Initialize depot_tools within the container environment
# This ensures gn and other tools are correctly set up
RUN update_depot_tools

# --- Compile Skia ---
WORKDIR /src/skia

# Skia dependencies (including gn) are now synced locally by prepare_sources.sh
# Skia system dependencies are handled by system packages installed via apt-get

# Generate Skia build files using Debian's system libraries
# Note: Changed skia_use_system_* flags to true and enabled AVX
RUN /src/depot_tools/gn gen out/Release-x64 --args='is_debug=false is_official_build=true skia_use_system_expat=true skia_use_system_icu=true skia_use_system_libjpeg_turbo=true skia_use_system_libpng=true skia_use_system_libwebp=true skia_use_system_zlib=true skia_use_sfntly=false skia_use_freetype=true skia_use_harfbuzz=true skia_pdf_subset_harfbuzz=true skia_use_system_freetype2=true skia_use_system_harfbuzz=true extra_cflags=["-mavx"] extra_cxxflags=["-mavx"]'

# Compile Skia
RUN ninja -C out/Release-x64 skia modules

# --- Compile Aseprite ---
WORKDIR /src/aseprite
RUN mkdir -p build
WORKDIR /src/aseprite/build

# Generate Aseprite build files
# Pointing to the Skia build output within the image and enabling AVX
RUN cmake \
  -DCMAKE_BUILD_TYPE=RelWithDebInfo \
  -DCMAKE_CXX_FLAGS="-mavx" \
  -DLAF_BACKEND=skia \
  -DSKIA_DIR=/src/skia \
  -DSKIA_LIBRARY_DIR=/src/skia/out/Release-x64 \
  -DSKIA_LIBRARY=/src/skia/out/Release-x64/libskia.a \
  -DLIBJPEG_TURBO_LIBRARY=/usr/lib/x86_64-linux-gnu/libjpeg.so \
  -DCMAKE_EXE_LINKER_FLAGS="-lfreetype" \
  -G Ninja \
  ..

# Compile Aseprite
RUN ninja aseprite

# --- Prepare Output ---
# Create a target directory and copy the final binaries/assets
RUN mkdir -p /target/aseprite/build/bin
RUN cp /src/aseprite/build/bin/aseprite /target/aseprite/build/bin/
# Ensure data directory exists before copying into it
RUN mkdir -p /target/aseprite/build/bin/data
RUN cp /src/aseprite/build/bin/data/* /target/aseprite/build/bin/data/

# Expose a volume for the output (optional, as Makefile will copy)
VOLUME /target

# Set final working directory (optional)
WORKDIR /target