#!/bin/bash
set -euo pipefail

##########################
# Color helpers (printf-safe, no tput)
##########################
RED="\033[0;31m"
GREEN="\033[0;32m"
YELLOW="\033[0;33m"
CYAN="\033[0;36m"
GRAY="\033[0;37m"
BOLD="\033[1m"
RESET="\033[0m"

# Disable colors if output is not a terminal
if [ ! -t 1 ]; then
    RED="" GREEN="" YELLOW="" CYAN="" GRAY="" BOLD="" RESET=""
fi

say_red()    { printf "\n"; printf "%b%s%b\n" "$RED" "$*" "$RESET"; }
say_green()    { printf "\n"; printf "%b%s%b\n" "$GREEN" "$*" "$RESET"; }
say_yellow()   { printf "\n"; printf "%b%s%b\n" "$YELLOW" "$*" "$RESET"; }
say_cyan()     { printf "\n"; printf "%b%s%b\n" "$CYAN" "$*" "$RESET"; }
say_gray()     { printf "\n"; printf "%b%s%b\n" "$GRAY" "$*" "$RESET"; }
say_bold()     { printf "\n"; printf "%b%s%b\n" "$BOLD" "$*" "$RESET"; }

##########################
# Use exported variables from main detection script
##########################
OS="${DETECTED_OS:-debian}"
DDE="${DETECTED_DE:-}"
DE="${SELECTED_DE:-none}"
TWM="${SELECTED_TWM:-none}"
INSTALL_LEVEL="${INSTALL_LEVEL:-minimal}"
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

##########################
# Helper functions
##########################
install_packages() { sudo apt update; sudo apt install -y --no-install-recommends "$@"; }
is_package_installed() { dpkg -s "$1" &>/dev/null; }

say_yellow "Starting full setup..."

# Run minimal first
bash "$SCRIPT_DIR/debian-minimal.sh"

# Add extra packages
install_packages arandr catfish galculator network-manager network-manager-applet network-manager-openvpn numlockx pulseaudio pavucontrol playerctl gparted xfce4-indicator-plugin xfce4-pulseaudio-plugin xfce4-clipman-plugin

# Ensure NetworkManager manages all interfaces
echo "Setting NetworkManager to manage all interfaces..."
sudo cp /etc/network/interfaces /etc/network/interfaces.bak.$(date +%s)
sudo tee /etc/network/interfaces > /dev/null <<'EOF'
auto lo
iface lo inet loopback
EOF
sudo sed -i 's/^managed=.*/managed=true/' /etc/NetworkManager/NetworkManager.conf || \
    echo -e "[ifupdown]\nmanaged=true" | sudo tee -a /etc/NetworkManager/NetworkManager.conf
sudo systemctl restart NetworkManager

########################################
# XFCE-specific configuration
########################################
if [[ "${DE}" == "xfce" || "${DDE}" == "xfce" ]]; then
    echo
    say_cyan "Applying XFCE defaults: fonts, browser, and terminal..."

    # Ensure xfconf-query exists (for XFCE settings)
    if ! command -v xfconf-query >/dev/null 2>&1; then
        say_yellow "xfconf-query not found — installing xfce4-settings..."
        install_packages xfce4-settings
    fi

    # set fonts
    # Wait for xfconf to be available (only needed if running inside the same session)
    if command -v xfconf-query >/dev/null 2>&1; then
        # Interface font (UI)
        xfconf-query -c xsettings -p /Gtk/FontName -s "RobotoMono Nerd Font Regular 10"
        # Monospace font (terminals, editors)
        xfconf-query -c xsettings -p /Gtk/MonospaceFontName -s "RobotoMono Nerd Font Mono Regular 10"

        say_green "XFCE fonts updated successfully!"
    else
        say_yellow "xfconf-query not found — skipping XFCE font config (will apply at first login)."
    fi

    # Set browser default
    if command -v chromium >/dev/null 2>&1; then
        mkdir -p "$HOME/.config/xfce4/"
        HELPERS_FILE="$HOME/.config/xfce4/helpers.rc"

        # Ensure the helpers file exists
        touch "$HELPERS_FILE"

        # Update or insert browser entry
        if grep -q '^WebBrowser=' "$HELPERS_FILE"; then
            sed -i 's|^WebBrowser=.*|WebBrowser=chromium|' "$HELPERS_FILE"
        else
            echo "WebBrowser=chromium" >> "$HELPERS_FILE"
        fi
    say_green "XFCE defeault browser set to chromium!"
    fi

    # Set default terminal
    if command -v alacritty >/dev/null 2>&1; then
        mkdir -p "$HOME/.config/xfce4/"
        HELPERS_FILE="$HOME/.config/xfce4/helpers.rc"

        touch "$HELPERS_FILE"

        # TerminalEmulator entry
        if grep -q '^TerminalEmulator=' "$HELPERS_FILE"; then
            sed -i 's|^TerminalEmulator=.*|TerminalEmulator=alacritty|' "$HELPERS_FILE"
        else
            echo "TerminalEmulator=alacritty" >> "$HELPERS_FILE"
        fi

        # TerminalEmulatorCommand entry
        if grep -q '^TerminalEmulatorCommand=' "$HELPERS_FILE"; then
            sed -i 's|^TerminalEmulatorCommand=.*|TerminalEmulatorCommand=alacritty|' "$HELPERS_FILE"
        else
            echo "TerminalEmulatorCommand=alacritty" >> "$HELPERS_FILE"
        fi
    say_green "XFCE defeault terminal set to alacritty!"
    fi

    # Set basic configuration
    SOURCE_DIR="$SCRIPT_DIR/config-files/debian"
    DEST_DIR="$HOME"

    # Variable to track if Xfce was running *before* we killed the processes
    XFCE_WAS_RUNNING=0

    # 1. Check if the source directory exists
    if [ ! -d "$SOURCE_DIR" ]; then
        say_red "Error: Source directory '$SOURCE_DIR' not found. Aborting."
        exit 1
    fi

    # 2. Aggressively Stop Xfce Processes if XFCE active
    if pgrep -x "xfce4-panel" > /dev/null; then
        # Store the state that Xfce was running
        XFCE_WAS_RUNNING=1
        
        say_yellow "Stopping Xfce Panel and Configuration Daemon to prevent settings overwrite..."
        # Kill the panel, configuration daemon, and window manager
        pkill xfce4-panel
        pkill xfconfd
        pkill xfwm4
        sleep 1
    fi

    # 3. Copy files from source to destination recursively (Unconditional)
    say_yellow "Copying all files and directories (including hidden ones) from $SOURCE_DIR to $DEST_DIR"

    # Enable dotglob so that '*' matches files starting with '.' (like .config)
    shopt -s dotglob

    # Copy the entire directory structure into $HOME, merging files where necessary.
    cp -vrf "$SOURCE_DIR"/* "$DEST_DIR"/

    # Disable dotglob to revert the shell behavior
    shopt -u dotglob

    say_green "Configurations copied to disk."

    # 4. Cleanup and Restart Xfce processes to load the new configuration
    if [ "$XFCE_WAS_RUNNING" -eq 1 ]; then
        say_bold "Xfce was detected. Applying configuration changes immediately."
        
        # CRITICAL FIX: Delete the session cache to prevent Xfce from restoring old settings
        # This forces the session manager to read the new configuration files.
        say_yellow "Clearing Xfce session cache to force a fresh configuration load..."
        rm -rf "$HOME/.cache/sessions/"

        # Restart Xfce processes to load the new configuration from the copied files
        say_cyan "Restarting Xfce environment components..."

        # Restart the Window Manager first
        xfwm4 --replace & disown

        # Restart the Panel
        xfce4-panel & disown

        say_green "Xfce configuration successfully loaded and applied."
        say_cyan "Panel and Window Manager restarted."
    else
        say_cyan "Xfce Panel was not running. Configurations copied to $HOME."
        say_cyan "Please log out and log back in to fully apply the Xfce configuration changes."
    fi


fi

# End of script
say_green "Full setup completed."