install.sh

#!/usr/bin/env bash -e

# set installation directories
APP="$HOME/.local/share/applications"
BIN="$HOME/.local/bin"
LIB="$HOME/.local/lib"
ASEPRITE_DIR="$LIB/aseprite"
SKIA_DIR="$LIB/skia"

# save current working directory
CURRENT_DIR="$(pwd)"

# create and change to installation directory
[ ! -d "$LIB" ] && mkdir -p "$LIB"
cd "$LIB"

# download and unzip skia prebuilt for aseprite
if [ ! -d "$SKIA_DIR" ]; then
    echo -e "\n\e[1;36m[INFO]\e[0m Downloading Skia for Aseprite...\n"
    curl -LO $(curl -s https://api.github.com/repos/aseprite/skia/releases/latest | grep "tag_name" | awk '{print "https://github.com/aseprite/skia/releases/download/" substr($2, 2, length($2)-3) "/Skia-Linux-Release-x64-libc++.zip"}')
    unzip -q "Skia-Linux-Release-x64-libc++.zip" -d "skia"
    rm "Skia-Linux-Release-x64-libc++.zip"
fi

# clone aseprite repository (include submodules) or update it if it exists
if [ -d "$ASEPRITE_DIR" ]; then
    cd aseprite
    if git rev-parse --git-dir > /dev/null 2>&1; then
        UPSTREAM=${1:-'@{u}'}
        LOCAL=$(git rev-parse @)
        REMOTE=$(git rev-parse "$UPSTREAM")
        BASE=$(git merge-base @ "$UPSTREAM")

        if [ $LOCAL = $REMOTE ]; then
            echo -e "\n\e[1;36m[INFO]\e[0m Aseprite is already up-to-date. No action necessary."
            cd "$CURRENT_DIR"
            exit 0
        fi
        if [ $LOCAL != $BASE ]; then
            echo -e "\n\e[1;33m[WARNING]\e[0m Repository has diverged from remote origin/main.\n"
            read -p "Reset to origin/main and continue? (y/n) " -n 1 -r
            echo
            if [[ $REPLY =~ ^[Yy]$ ]]; then
                git reset --hard HEAD
            else
                echo -e "\n\e[1;36m[INFO]\e[0m Quitting..."
                cd "$CURRENT_DIR"
                exit 1
            fi
        fi
        echo -e "\n\e[1;36m[INFO]\e[0m Updating Aseprite source files...\n"
        git pull
        git submodule update --init --recursive
    else
        echo -e "\n\e[1;31m[ERROR]\e[0m $ASEPRITE_DIR is not a git repository. Move the directory elsewhere and re-run this script to install Aseprite properly."
        cd "$CURRENT_DIR"
        exit 1
    fi
else
    echo -e "\n\e[1;36m[INFO]\e[0m Downloading Aseprite source files...\n"
    git clone --recursive https://github.com/aseprite/aseprite.git
    cd aseprite
fi

# main build process
echo -e "\n\e[1;36m[INFO]\e[0m Starting build process...\n"
[ -d build ] && rm -rf build/* || mkdir build
cd build
export CC=clang
export CXX=clang++
cmake \
    -DCMAKE_BUILD_TYPE=RelWithDebInfo \
    -DCMAKE_CXX_FLAGS:STRING=-stdlib=libc++ \
    -DCMAKE_EXE_LINKER_FLAGS:STRING=-stdlib=libc++ \
    -DLAF_BACKEND=skia \
    -DSKIA_DIR=$SKIA_DIR \
    -DSKIA_LIBRARY_DIR=$SKIA_DIR/out/Release-x64 \
    -DSKIA_LIBRARY=$SKIA_DIR/out/Release-x64/libskia.a \
    -G Ninja \
    ..
ninja aseprite

echo -e "\n\e[1;36m[INFO]\e[0m Integrating Aseprite with the system...\n"

# symlink the binary to a location on PATH for CLI access
[ -d "$BIN" ] && rm -f "$BIN/aseprite" || mkdir -p "$BIN"
ln -s "$ASEPRITE_DIR/build/bin/aseprite" "$BIN/aseprite"

# add entry to app menu for GUI access
[ ! -d "$APP" ] && mkdir -p "$APP"
printf "%s\n" > "$APP/aseprite.desktop" \
    "[Desktop Entry]" \
    "Type=Application" \
    "Name=Aseprite" \
    "GenericName=Sprite Editor" \
    "Comment=Animated sprite editor & pixel art tool" \
    "Icon=$ASEPRITE_DIR/build/bin/data/icons/ase.ico" \
    "Categories=Graphics;2DGraphics;RasterGraphics" \
    "Exec=$ASEPRITE_DIR/build/bin/aseprite %U" \
    "TryExec=$ASEPRITE_DIR/build/bin/aseprite" \
    "Terminal=false" \
    "StartupNotify=false" \
    "StartupWMClass=Aseprite" \
    "MimeType=image/bmp;image/gif;image/jpeg;image/png;image/x-pcx;image/x-tga;image/vnd.microsoft.icon;video/x-flic;image/webp;image/x-aseprite;"

# installation complete message
echo -e "\e[1;32m[DONE]\e[1;33m Aseprite is now installed. Enjoy~ :3\e[0m"

# go back to saved working directory
cd "$CURRENT_DIR"