{ pkgs, config }:

rec {
  terminal_with_tmux = pkgs.writeShellScript "terminal_with_tmux" ''
    TERM="${config.beeMods.terminal.default}"
    SESSION="_main"

    if pgrep -x "$TERM" >/dev/null; then
        if tmux ls &>/dev/null; then
            tmux neww
            exit 0
        else
            exec $TERM -e tmux new -s $SESSION
        fi
    else 
        if tmux ls &>/dev/null; then
            exec $TERM -e tmux attach
        else
          exec $TERM -e tmux new -s $SESSION
        fi
    fi
  '';
  defaultTerm = config.beeMods.terminal.default;
  terminal =
    if defaultTerm == "foot" then
      "footclient"
    else if defaultTerm == "ghostty" then
      "ghostty +new-window || ghostty"
    else
      "alacritty msg create-window || alacritty";
  dotfiles = pkgs.writeShellScriptBin "dotfiles" ''
    case "$1" in
        cd)
            cd "$HOME/.config/beeSystems"
        ;;
        edit)
            "$EDITOR" "$HOME/.config/beeSystems"
        ;;
        flake)
            case "$2" in
            update)
                (
                cd "$HOME/.config/beeSystems" || exit 1
                nix flake update
                )
            ;;
            esac
        ;;
    esac
  '';
  update_gtk_theme = pkgs.writeShellScript "update_gtk_theme" ''
    if [ "$1" = "dark" ]; then
        dconf write /org/gnome/desktop/interface/color-scheme "'prefer-light'"
    else
        dconf write /org/gnome/desktop/interface/color-scheme "'prefer-dark'"
    fi

    dconf write /org/gnome/desktop/interface/color-scheme "'prefer-$1'"
    systemctl --user restart xdg-desktop-portal-gtk
  '';
  volume = pkgs.writeShellScript "volume" ''
    TAG="audio-volume"
    case $1 in
        up)   wpctl set-volume -l 1.5 @DEFAULT_AUDIO_SINK@ 5%+ ;;
        down) wpctl set-volume @DEFAULT_AUDIO_SINK@ 5%- ;;
        toggle) wpctl set-mute @DEFAULT_AUDIO_SINK@ toggle ;;
    esac

    status=$(wpctl get-volume @DEFAULT_AUDIO_SINK@)
    vol=$(awk '{print int($2 * 100)}' <<< "$status")

    case "$status" in
        *MUTED*)
            dunstify -a "Volume" -u low \
                -h string:x-canonical-private-synchronous:$TAG \
                "Volume: Muted"
            ;;
        *)
            dunstify -a "Volume" -u low \
                -h string:x-canonical-private-synchronous:$TAG \
                -h int:value:"$vol" \
                "Volume: $vol%"
            ;;
    esac
  '';
  micToggle = pkgs.writeShellScript "micToggle" ''
    TAG="audio-mic"

    wpctl set-mute @DEFAULT_AUDIO_SOURCE@ toggle

    status=$(wpctl get-volume @DEFAULT_AUDIO_SOURCE@)

    if [[ "$status" == *MUTED* ]]; then
        dunstify -a "Microphone" -u low \
            -h string:x-canonical-private-synchronous:$TAG \
            "Microphone: Muted"
    else
        dunstify -a "Microphone" -u low \
            -h string:x-canonical-private-synchronous:$TAG \
            "Microphone: On"
    fi
  '';
  brightness = pkgs.writeShellScript "brightness" ''
    TAG="screen-brightness"

    case "$1" in
        up)   brightnessctl set +5% > /dev/null ;;
        down) brightnessctl set 5%- > /dev/null ;;
    esac

    current=$(brightnessctl -m | cut -d, -f4 | tr -d '%')

    dunstify -a "Brightness" -u low \
        -h string:x-canonical-private-synchronous:$TAG \
        -h int:value:"$current" \
        "Brightness: $current%"
  '';
  screenshot = pkgs.writeShellScript "screenshot" ''
    case $1 in
      full)
        ${pkgs.grim}/bin/grim - | wl-copy
        ;;
      selection)
        GEOM=$(${pkgs.slurp}/bin/slurp) || exit
        ${pkgs.grim}/bin/grim -g "$GEOM" - | wl-copy
        ;;
      window)
        ${pkgs.grim}/bin/grim -g "$(mmsg -x | awk '
          / x / {x=$3}
          / y / {y=$3}
          / width / {w=$3}
          / height / {h=$3}
          END {print x "," y " " w "x" h}
          ')" - | wl-copy
        ;;
      esac
  '';
  dostuff = pkgs.writeShellScript "dostuff" ''
    exec 2>/dev/null
    : "''${CONFIG_FILE:=$HOME/.config/beestuff/conf}"
    : "''${WALL_DIR:=$HOME/Pictures/Wallpapers}"
    : "''${THUMB_DIR:=$HOME/.cache/beestuff/thumbnails}"

    init_settings() {
        [ -f "$CONFIG_FILE" ] && return 0

        local config_dir
        config_dir=$(dirname -- "$CONFIG_FILE")

        mkdir -p -- "$config_dir"

        cat > "$CONFIG_FILE" <<EOF
    theme=dark
    nightlight=off
    wallpaper=$WALL_DIR/default.jpg
    color_type=scheme-tonal-spot
    EOF
    }

    get_val() {
        grep "^$1=" "$CONFIG_FILE" | cut -d= -f2-
    }

    set_val() {
        sed -i "s|^$1=.*|$1=$2|" "$CONFIG_FILE"
    }

    set_layout() {
        mmsg dispatch setlayout,"$1"
    }

    hash_path() {
        printf '%s' "$1" | md5sum | cut -d' ' -f1
    }

    ensure_thumb() {
        local img="$1"
        local hash thumb candidate

        hash=$(hash_path "$img")
        thumb="$THUMB_DIR/$hash.jpg"

        [ -f "$thumb" ] && {
            printf '%s' "$thumb"
            return 0
        }

        mkdir -p -- "$THUMB_DIR"

        if command -v magick >/dev/null 2>&1; then
            magick "$img" \
                -resize 400x300^ \
                -gravity center \
                -extent 400x300 \
                "$thumb" 

        elif command -v convert >/dev/null 2>&1; then
            convert "$img" \
                -resize 400x300^ \
                -gravity center \
                -extent 400x300 \
                "$thumb" 

        elif command -v ffmpeg >/dev/null 2>&1; then
            ffmpeg -hide_banner -loglevel error \
                -i "$img" \
                -vf "scale=400:300:force_original_aspect_ratio=cover,crop=400:300" \
                -frames:v 1 \
                "$thumb"

        else
            printf '%s' "$img"
            return 0
        fi

        [ -f "$thumb" ] || thumb="$img"

        printf '%s' "$thumb"
    }

    list_walls() {
        local wall

        for wall in "$WALL_DIR"/*.{jpg,jpeg,png,webp}; do
            [ -f "$wall" ] || continue

            printf '%s\0icon\x1f%s\n' \
                "''${wall##*/}" \
                "$(ensure_thumb "$wall")"
        done 
    }

    apply_all() {
        local theme=$(get_val "theme")
        local wall=$(get_val "wallpaper")
        local color_type=$(get_val "color_type")
        local mode_flag="dark"

        mode_flag="dark"
        [ "$theme" = "light" ] && mode_flag="light"

        matugen image "$wall" \
            -r lanczos3 \
            --continue-on-error \
            -m "$mode_flag" \
            -t "$color_type" \
            --source-color-index 0
            

        "${update_gtk_theme}" "$mode_flag"

        if [ -z "$WAYLAND_DISPLAY" ] && [ -n "$DISPLAY" ]; then
            xrdb -merge "$HOME/.Xresources"
        fi

        local seq_file="$HOME/.local/share/bee/sequences"
        [ -f "$seq_file" ] && sh "$seq_file"
    }

    cmd_wall() {
        local selected full_path

        selected=$(
            list_walls |
            rofi -dmenu -i -p "Wallpaper" \
                -show-icons \
                -theme-str 'element { orientation: vertical; padding: 15px; }' \
                -theme-str 'element-icon { size: 10em; horizontal-align: 0.5; }' \
                -theme-str 'listview { columns: 4; lines: 2; }' \
                -theme-str 'window { width: 50%; }'
        )

        [ -n "$selected" ] || return 0

        full_path="$WALL_DIR/$selected"
        set_val "wallpaper" "$full_path"

        if [ -n "$WAYLAND_DISPLAY" ]; then
            if command -v awww >/dev/null 2>&1; then
                awww img "$full_path" \
                    --transition-type grow \
                    --transition-fps 120 \
                    --transition-step 60 \
                    --transition-duration 1.5
            else
                pkill swaybg 
                swaybg -i "$full_path" -m fill &
            fi
        else
            feh --no-fehbg --bg-fill "$full_path"
        fi

        apply_all
    }

    clr_type() {
        local schemes selection

        schemes=(
            "scheme-tonal-spot"
            "scheme-content"
            "scheme-expressive"
            "scheme-fidelity"
            "scheme-fruit-salad"
            "scheme-monochrome"
            "scheme-neutral"
            "scheme-rainbow"
            "scheme-vibrant"
        )

        selection=$(
            printf '%s\n' "''${schemes[@]}" |
            rofi -dmenu -i -p "Colorscheme Types"
        )

        [ -n "$selection" ] || return 0

        set_val "color_type" "$selection"
        apply_all
    }

    cmd_layout() {
        local layouts selection

        layouts=(
            tile
            monocle
            scroller
            fair
            dwindle
            grid
            deck
            center_tile
            right_tile
            vertical_scroller
            vertical_tile
            vertical_grid
            vertical_fair
            vertical_deck
        )

        selection=$(
            printf '%s\n' "''${layouts[@]}" |
            rofi -dmenu -i -p "Layout"
        )

        [ -n "$selection" ] || return 0

        set_layout "$selection"
    }

    cmd_settings() {
        local theme nl ct choice

        theme=$(get_val "theme")
        nl=$(get_val "nightlight")
        ct=$(get_val "color_type")

        choice=$(
            printf '%s\n' \
                "Mode: $theme" \
                "Night Light: $nl" \
                "Wallpaper" \
                "Colorscheme Type: $ct" \
                "Layouts" |
            rofi -dmenu -p "Settings" -i
        )

        case "$choice" in
            "Mode: "*)
                if [ "$theme" = "dark" ]; then
                    set_val "theme" "light"
                else
                    set_val "theme" "dark"
                fi
                apply_all
                ;;

            "Night Light: "*)
                if [ "$nl" = "on" ]; then
                    set_val "nightlight" "off"
                    pkill wlsunset 
                else
                    set_val "nightlight" "on"
                    exec wlsunset -T 4500
                fi
                ;;

            "Wallpaper")
                cmd_wall
                ;;

            "Colorscheme Type:"*)
                clr_type
                ;;

            "Layouts")
                cmd_layout
                ;;
        esac
    }

    init_settings

    case "$1" in
        wall)        cmd_wall ;;
        settings)    cmd_settings ;;
        layout)      cmd_layout ;;
        apply)       apply_all ;;
        *)
            printf '%s\n' "Usage: bee {wall|settings|layout|apply}"
            ;;
    esac
  '';

}