#!/bin/bash

# Set theme environment variable for current session and future sessions
export THEME="light"
echo "export THEME=light" > "$HOME/.theme_env"

# Update GTK theme using gsettings (more reliable)
if command -v gsettings >/dev/null 2>&1; then
    gsettings set org.gnome.desktop.interface gtk-theme "Rosepine-Light"
    gsettings set org.gnome.desktop.interface color-scheme "prefer-light"
    gsettings set org.gnome.desktop.interface icon-theme "Papirus-Light"
fi

# Update GTK configuration files directly
mkdir -p "$HOME/.config/gtk-3.0" "$HOME/.config/gtk-4.0"

# GTK 3 settings
cat > "$HOME/.config/gtk-3.0/settings.ini" << EOF
[Settings]
gtk-application-prefer-dark-theme=false
gtk-theme-name=Rosepine-Light
gtk-icon-theme-name=Papirus-Light
EOF

# GTK 4 settings
cat > "$HOME/.config/gtk-4.0/settings.ini" << EOF
[Settings]
gtk-application-prefer-dark-theme=false
gtk-theme-name=Rosepine-Light
gtk-icon-theme-name=Papirus-Light
EOF

# GTK 2 settings
cat > "$HOME/.gtkrc-2.0" << EOF
gtk-theme-name="Rosepine-Light"
gtk-icon-theme-name="Papirus-Light"
EOF

# Update Qt6 theme using qt6ct
if command -v qt6ct >/dev/null 2>&1; then
    export QT_QPA_PLATFORMTHEME=qt6ct
    mkdir -p "$HOME/.config/qt6ct/colors"
    if [ -f "$HOME/.config/qt6ct/qt6ct.conf" ]; then
        sed -i 's/^color_scheme_path=.*/color_scheme_path=\/home\/mike\/.config\/qt6ct\/colors\/rose-pine-dawn.conf/' "$HOME/.config/qt6ct/qt6ct.conf"
        sed -i 's/^color_scheme=.*/color_scheme=rose-pine-dawn/' "$HOME/.config/qt6ct/qt6ct.conf"
    else
        # Create basic qt6ct config if it doesn't exist
        cat > "$HOME/.config/qt6ct/qt6ct.conf" << EOF
[Appearance]
color_scheme_path=/home/mike/.config/qt6ct/colors/rose-pine-dawn.conf
color_scheme=rose-pine-dawn
custom_palette=true
standard_dialogs=default
style=Fusion

[Fonts]
fixed=@Variant(\0\0\0@\0\0\0\x12\0M\0o\0n\0o\0s\0p\0\x61\0\x63\0\x65@\"\0\0\0\0\0\0\xff\xff\xff\xff\x5\x1\0\x32\x10)
general=@Variant(\0\0\0@\0\0\0\x12\0U\0\x62\0u\0n\0t\0u@\"\0\0\0\0\0\0\xff\xff\xff\xff\x5\x1\0\x32\x10)

[Interface]
activate_item_on_single_click=1
buttonbox_layout=0
cursor_flash_time=1000
dialog_buttons_have_icons=1
double_click_interval=400
gui_effects=@Invalid()
keyboard_scheme=2
menus_have_icons=true
show_shortcuts_in_context_menus=true
stylesheets=@Invalid()
toolbutton_style=4
underline_shortcut=1
wheel_scroll_lines=3

[SettingsWindow]
geometry=@ByteArray()
EOF
    fi
fi

# Update Qt5 theme using qt5ct
if command -v qt5ct >/dev/null 2>&1; then
    export QT_QPA_PLATFORMTHEME=qt5ct
    mkdir -p "$HOME/.config/qt5ct/colors"
    if [ -f "$HOME/.config/qt5ct/qt5ct.conf" ]; then
        sed -i 's/^color_scheme_path=.*/color_scheme_path=\/home\/mike\/.config\/qt5ct\/colors\/rose-pine-dawn.conf/' "$HOME/.config/qt5ct/qt5ct.conf"
        sed -i 's/^color_scheme=.*/color_scheme=rose-pine-dawn/' "$HOME/.config/qt5ct/qt5ct.conf"
    else
        # Create basic qt5ct config if it doesn't exist
        cat > "$HOME/.config/qt5ct/qt5ct.conf" << EOF
[Appearance]
color_scheme_path=/home/mike/.config/qt5ct/colors/rose-pine-dawn.conf
color_scheme=rose-pine-dawn
custom_palette=true
standard_dialogs=default
style=Fusion

[Fonts]
fixed=@Variant(\0\0\0@\0\0\0\x12\0M\0o\0n\0o\0s\0p\0\x61\0\x63\0\x65@\"\0\0\0\0\0\0\xff\xff\xff\xff\x5\x1\0\x32\x10)
general=@Variant(\0\0\0@\0\0\0\x12\0U\0\x62\0u\0n\0t\0u@\"\0\0\0\0\0\0\xff\xff\xff\xff\x5\x1\0\x32\x10)

[Interface]
activate_item_on_single_click=1
buttonbox_layout=0
cursor_flash_time=1000
dialog_buttons_have_icons=1
double_click_interval=400
gui_effects=@Invalid()
keyboard_scheme=2
menus_have_icons=true
show_shortcuts_in_context_menus=true
stylesheets=@Invalid()
toolbutton_style=4
underline_shortcut=1
wheel_scroll_lines=3

[SettingsWindow]
geometry=@ByteArray()
EOF
    fi
fi

# Update Rofi theme
mkdir -p "$HOME/.config/rofi"
if [ -f "$HOME/.config/rofi/config.rasi" ]; then
    # Update existing config.rasi
    if grep -q "@theme" "$HOME/.config/rofi/config.rasi"; then
        sed -i 's/@theme ".*"/@theme "rose-pine-dawn"/' "$HOME/.config/rofi/config.rasi"
    else
        echo '@theme "rose-pine-dawn"' >> "$HOME/.config/rofi/config.rasi"
    fi
else
    # Create new config.rasi with Rose Pine Dawn (light) theme
    cat > "$HOME/.config/rofi/config.rasi" << EOF
configuration {
    modi: "drun,run,window";
    show-icons: true;
    icon-theme: "Papirus-Light";
    display-drun: "";
    display-run: "";
    display-window: "";
    drun-display-format: "{name}";
    disable-history: false;
    hide-scrollbar: true;
    sidebar-mode: false;
}

@theme "rose-pine-dawn"
EOF
fi

# Update Wezterm theme
if [ -f "$HOME/.config/wezterm/wezterm.lua" ]; then
    # Update Rose Pine theme variant to dawn (light)
    sed -i "s/local theme = wezterm\.plugin\.require('https:\/\/github\.com\/neapsix\/wezterm')\.\(main\|moon\|dawn\)/local theme = wezterm.plugin.require('https:\/\/github.com\/neapsix\/wezterm').dawn/" "$HOME/.config/wezterm/wezterm.lua"
    # Also handle manual require statements
    sed -i "s/local theme = require('lua\/rose-pine')\.\(main\|moon\|dawn\)/local theme = require('lua\/rose-pine').dawn/" "$HOME/.config/wezterm/wezterm.lua"
    # Fallback for older color_scheme format
    sed -i 's/config.color_scheme = .*/-- config.color_scheme = "rose-pine-dawn" -- Using custom Rose Pine theme/' "$HOME/.config/wezterm/wezterm.lua"
elif [ -f "$HOME/.wezterm.lua" ]; then
    # Update Rose Pine theme variant to dawn (light)
    sed -i "s/local theme = wezterm\.plugin\.require('https:\/\/github\.com\/neapsix\/wezterm')\.\(main\|moon\|dawn\)/local theme = wezterm.plugin.require('https:\/\/github.com\/neapsix\/wezterm').dawn/" "$HOME/.wezterm.lua"
    # Also handle manual require statements
    sed -i "s/local theme = require('lua\/rose-pine')\.\(main\|moon\|dawn\)/local theme = require('lua\/rose-pine').dawn/" "$HOME/.wezterm.lua"
    # Fallback for older color_scheme format
    sed -i 's/config.color_scheme = .*/-- config.color_scheme = "rose-pine-dawn" -- Using custom Rose Pine theme/' "$HOME/.wezterm.lua"
fi

# Set environment variables for current session
export THEME="light"
export GTK_THEME=""
unset GTK_THEME  # Unset to use theme from config files

# Create theme indicator file for bar.sh to detect
echo "light" > "$HOME/.current_theme"

# Verify the file was written
if [ "$(cat "$HOME/.current_theme")" = "light" ]; then
    echo "✓ Theme file updated to 'light'"
else
    echo "✗ Failed to update theme file"
fi

# Check if bar is running
if pgrep -f "bar.sh" > /dev/null; then
    echo "✓ Bar is running - theme should update immediately"
else
    echo "⚠ Bar is not running - start it with: ~/repos/dwm/bar.sh"
fi

# Try to reload GTK applications via xsettingsd if available
if command -v xsettingsd >/dev/null 2>&1; then
    pkill -HUP xsettingsd >/dev/null 2>&1 || true
fi

# Restart GTK settings daemon if using GNOME
if pgrep -x "gnome-session" >/dev/null; then
    dbus-send --session --type=method_call --dest=org.gnome.SettingsDaemon.Color /org/gnome/SettingsDaemon/Color org.gnome.SettingsDaemon.Color.ApplySettings >/dev/null 2>&1 || true
fi

# Update theme state file for bar.sh
echo "light" > "$HOME/.current_theme"

# Load light theme Xresources and reload dwm colors
if [ -f "$HOME/.Xresources.light" ]; then
    echo "Loading light theme Xresources..."
    xrdb -merge "$HOME/.Xresources.light"
    
    # Send signal to dwm to reload colors (equivalent to Mod+Shift+F5)
    # First try using xdotool to simulate the key combination
    if command -v xdotool >/dev/null 2>&1; then
        xdotool key --clearmodifiers Super_L+shift+F5 2>/dev/null || true
    fi
    
    # Alternative: if you have dwm-msg or similar IPC tool
    # dwm-msg run_command xrdb 2>/dev/null || true
fi

# Refresh system tray icons and Qt applications
echo "Refreshing system tray and Qt applications..."

# Restart common tray applications to refresh their icons
for app in nm-applet blueman-applet pasystray; do
    if pgrep "$app" >/dev/null; then
        pkill "$app" 2>/dev/null
        sleep 0.5
        nohup "$app" >/dev/null 2>&1 &
    fi
done

# Notify Qt applications of theme change  
if command -v qt5ct >/dev/null 2>&1; then
    export QT_QPA_PLATFORMTHEME=qt5ct
fi
if command -v qt6ct >/dev/null 2>&1; then
    export QT_QPA_PLATFORMTHEME=qt6ct
fi

# Notify about theme change
echo "Switched to Rose Pine Dawn (light) theme"

# Update shell configuration to source theme on new terminals
if [ -n "$SHELL" ]; then
    shell_name=$(basename "$SHELL")
    case "$shell_name" in
        "bash")
            if ! grep -q "source.*\.theme_env" "$HOME/.bashrc" 2>/dev/null; then
                echo "[ -f \"\$HOME/.theme_env\" ] && source \"\$HOME/.theme_env\"" >> "$HOME/.bashrc"
            fi
            ;;
        "fish")
            mkdir -p "$HOME/.config/fish"
            if ! grep -q "source.*\.theme_env" "$HOME/.config/fish/config.fish" 2>/dev/null; then
                echo "[ -f \"\$HOME/.theme_env\" ] && source \"\$HOME/.theme_env\"" >> "$HOME/.config/fish/config.fish"
            fi
            ;;
        "zsh")
            if ! grep -q "source.*\.theme_env" "$HOME/.zshrc" 2>/dev/null; then
                echo "[ -f \"\$HOME/.theme_env\" ] && source \"\$HOME/.theme_env\"" >> "$HOME/.zshrc"
            fi
            ;;
    esac
fi