#!/usr/bin/env bash
set -e

CMAKE="$HOME/Downloads/cmake-3.28.3-macos-universal/CMake.app/Contents/bin/cmake"

DEPS_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../deps" && pwd)"
mkdir -p "$DEPS_DIR"

cd $DEPS_DIR

# GLFW
if [ ! -d "glfw/build" ] || [ ! -f "glfw/build/src/libglfw3.a" ]; then
  echo "Building GLFW..."

  if [ ! -d "glfw" ]; then
    echo "  Cloning GLFW 3.4..."
    git clone --depth 1 --branch 3.4 https://github.com/glfw/glfw.git glfw
  else
    echo "  Updating GLFW..."
    git -C glfw pull
  fi

  cd glfw
  mkdir -p build
  cd build

  "$CMAKE" .. \
    -DCMAKE_BUILD_TYPE=RelWithDebInfo \
    -DBUILD_SHARED_LIBS=OFF \
    -DGLFW_BUILD_EXAMPLES=OFF \
    -DGLFW_BUILD_TESTS=OFF \
    -DGLFW_BUILD_DOCS=OFF \
    -DGLFW_INSTALL=ON \
    -DGLFW_BUILD_COCOA=ON \
    -DCMAKE_INSTALL_PREFIX="$DEPS_DIR/glfw/install"

  make -j$(sysctl -n hw.logicalcpu)
  make install   # installs libglfw3.a + headers into $DEPS_DIR/glfw/install

  cd ../..
  echo "GLFW built and installed to $DEPS_DIR/glfw/install"
else
  echo "GLFW already built – skipping."
fi

# If you don't use -L, using curl to access 'modern' websites can get very annoying.
if [ ! -d "$DEPS_DIR/webgpu" ]; then
    mkdir -p "$DEPS_DIR/webgpu"
    curl -L https://github.com/gfx-rs/wgpu-native/releases/download/v27.0.2.0/wgpu-macos-aarch64-debug.zip -o "$DEPS_DIR/webgpu/wgpu-macos-aarch64-debug.zip"
    cd webgpu
    unzip wgpu-macos-aarch64-debug.zip
    rm wgpu-macos-aarch64-debug.zip
    cd ..
fi

# glfw3webgpu helper
if [ ! -d "$DEPS_DIR/glfw3webgpu" ]; then
  git clone --depth 1 https://github.com/eliemichel/glfw3webgpu.git "$DEPS_DIR/glfw3webgpu"
else
  git -C "$DEPS_DIR/glfw3webgpu" pull
fi

# Nuklear (single header)
curl -L https://raw.githubusercontent.com/Immediate-Mode-UI/Nuklear/master/nuklear.h -o "$DEPS_DIR/nuklear.h"

if [ ! -d "glm" ]; then
  git clone --depth 1 https://github.com/g-truc/glm.git glm
else
  git -C glm fetch origin
  git -C glm reset --hard origin/master
fi

# Cista (serialization)
curl -L https://github.com/felixguendling/cista/releases/download/v0.16/cista.h -o "$DEPS_DIR/cista.h"

# ================================================================
# ngtcp2 + ngtcp2_crypto_openssl (static libraries)
# ================================================================
if [ ! -d "ngtcp2/build" ] || [ ! -f "ngtcp2/build/libngtcp2.a" ]; then
  echo "Building ngtcp2 (with OpenSSL crypto backend)..."

  if [ ! -d "ngtcp2" ]; then
    echo "  Cloning ngtcp2..."
    git clone --depth 1 --branch v1.9.0 https://github.com/ngtcp2/ngtcp2.git ngtcp2
  else
    echo "  Updating ngtcp2..."
    git -C ngtcp2 pull
  fi

  cd ngtcp2

  # Ensure we have the submodules (crypto/openssl)
  git submodule update --init --depth 1

  mkdir -p build
  cd build

  # Static-only build, disable examples/tests, enable gnutls backend
  $CMAKE .. \
    -DCMAKE_BUILD_TYPE=RelWithDebInfo \
    -DBUILD_SHARED_LIBS=OFF \
    -DBUILD_STATIC_LIBS=ON \
    -DENABLE_EXAMPLES=OFF \
    -DENABLE_TEST=OFF \
    -DENABLE_OPENSSL=OFF \
    -DENABLE_GNUTLS=ON \
    -DGNUTLS_LIBRARY=$HOME/homebrew/Cellar/gnutls/3.8.11/lib/libgnutls.dylib \
    -DGNUTLS_INCLUDE_DIR=$HOME/homebrew/Cellar/gnutls/3.8.11/include \
    -DCMAKE_INSTALL_PREFIX="$DEPS_DIR/ngtcp2/install"

  make -j$(sysctl -n hw.logicalcpu)
  make install # installs headers + .a files into $DEPS_DIR/ngtcp2/install

  cd ../../
  echo "ngtcp2 built and installed to $DEPS_DIR/ngtcp2/install"
else
  echo "ngtcp2 already built – skipping."
fi

echo "All dependencies updated."