This script provides an easy way to install, update, or uninstall Decky FrameGen on the Steam Deck until it becomes officially available in the Decky Loader Store. Why? Decky FrameGen is currently not in the store, so this temporary solution makes installation seamless without manual file management.

dfi.sh

#!/bin/bash

# Define variables
DECKY_LOADER_URL="https://github.com/SteamDeckHomebrew/decky-loader/releases/latest/download/decky_installer.desktop"
FRAMEGEN_RELEASE_API="https://api.github.com/repos/xXJSONDeruloXx/Decky-Framegen/releases/latest"
DOWNLOADS_DIR="$HOME/Downloads"
PLUGINS_DIR="$HOME/homebrew/plugins"
FRAMEGEN_FOLDER="$PLUGINS_DIR/decky-framegen"
DECKY_INSTALLER="$DOWNLOADS_DIR/decky_installer.desktop"
INSTALLED_VERSION_FILE="$FRAMEGEN_FOLDER/version.txt"

# Function to check if Decky Loader is installed
is_decky_loader_installed() {
    if [ -d "$HOME/homebrew" ]; then
        return 0  # Installed
    else
        return 1  # Not installed
    fi
}

# Function to install Decky Loader
install_decky_loader() {
    zenity --info --title="Decky Loader Installation" --text="Downloading Decky Loader..."
    wget -O "$DECKY_INSTALLER" "$DECKY_LOADER_URL"
    chmod +x "$DECKY_INSTALLER"
    gtk-launch decky_installer.desktop
    zenity --info --title="Decky Loader Installed" --text="Decky Loader installation complete!"
}

# Function to get the latest version from GitHub
get_latest_version() {
    curl -s $FRAMEGEN_RELEASE_API | grep '"tag_name"' | cut -d '"' -f 4
}

# Function to get the installed version
get_installed_version() {
    if [ -f "$INSTALLED_VERSION_FILE" ]; then
        cat "$INSTALLED_VERSION_FILE"
    else
        echo "none"
    fi
}

# Fetch the latest version
LATEST_VERSION=$(get_latest_version)
INSTALLED_VERSION=$(get_installed_version)

# Function to install/update Decky FrameGen
install_framegen() {
    zenity --info --title="Installing Decky FrameGen" --text="Installing Decky FrameGen version $LATEST_VERSION..."

    # Remove old version if it exists
    if [ -d "$FRAMEGEN_FOLDER" ]; then
        rm -rf "$FRAMEGEN_FOLDER"
        zenity --info --title="Removing Old Version" --text="Old version removed!"
    fi

    # Download and install the latest version
    FRAMEGEN_ZIP_URL=$(curl -s $FRAMEGEN_RELEASE_API | grep '"browser_download_url"' | cut -d '"' -f 4)
    FRAMEGEN_ZIP_PATH="$DOWNLOADS_DIR/decky-framegen.zip"

    wget -O "$FRAMEGEN_ZIP_PATH" "$FRAMEGEN_ZIP_URL"
    unzip -o "$FRAMEGEN_ZIP_PATH" -d "$DOWNLOADS_DIR"

    mkdir -p "$PLUGINS_DIR"
    mv "$DOWNLOADS_DIR/decky-framegen" "$PLUGINS_DIR/"

    # Save installed version
    echo "$LATEST_VERSION" > "$INSTALLED_VERSION_FILE"
    chmod -R 755 "$FRAMEGEN_FOLDER"

    zenity --info --title="Installation Complete" --text="Decky FrameGen updated to version $LATEST_VERSION!"
}

# Function to uninstall Decky FrameGen
uninstall_framegen() {
    if [ -d "$FRAMEGEN_FOLDER" ]; then
        rm -rf "$FRAMEGEN_FOLDER"
        zenity --info --title="Uninstall Complete" --text="Decky FrameGen has been removed."
    else
        zenity --error --title="Not Installed" --text="Decky FrameGen is not installed."
    fi
}

# Function to restart Game Mode
restart_game_mode() {
    zenity --question --title="Restart Game Mode?" --text="Restart Game Mode to apply changes?" --default-no
    if [ $? -eq 0 ]; then
        systemctl --user restart gaming-mode
        zenity --info --title="Game Mode Restarted" --text="Game Mode restarted successfully!"
    fi
}

# Step 1: Check if Decky Loader is installed
if ! is_decky_loader_installed; then
    zenity --warning --title="Decky Loader Missing" --text="Decky Loader is not installed. Decky FrameGen requires it to function.\n\nWould you like to install Decky Loader now?" --ok-label="Install" --cancel-label="Exit"
    
    if [ $? -eq 0 ]; then
        install_decky_loader
    else
        zenity --error --title="Installation Canceled" --text="Decky Loader is required. Installation aborted."
        exit 1
    fi
fi

# Step 2: Prompt user for action
user_choice=$(zenity --list --title="Decky FrameGen Installer" --text="Select an option:" --radiolist \
    --column="Select" --column="Action" \
    TRUE "Install/Update Decky FrameGen" \
    FALSE "Uninstall Decky FrameGen" \
    FALSE "Exit")

case $user_choice in
    "Install/Update Decky FrameGen")
        zenity --info --title="Checking Versions" --text="Installed version: $INSTALLED_VERSION\nLatest version: $LATEST_VERSION"
        
        confirm_install=$(zenity --question --title="Confirm Installation" --text="Do you want to install/update Decky FrameGen to version $LATEST_VERSION?" --ok-label="Yes" --cancel-label="No")

        if [ $? -eq 0 ]; then
            install_framegen
            restart_game_mode
        else
            zenity --info --title="Installation Canceled" --text="Installation/update has been canceled."
        fi
        ;;
    "Uninstall Decky FrameGen")
        uninstall_framegen
        restart_game_mode
        ;;
    "Exit")
        exit 0
        ;;
esac