#!/bin/bash

# omarchy:summary=Open a generic image selector menu
# omarchy:group=menu
# omarchy:name=images
# omarchy:args=[--selected <image>] [--namespace <namespace>] [--colors-file <path>] <image-dir>...

OMARCHY_PATH=${OMARCHY_PATH:-$HOME/.local/share/omarchy}

selected_image=""
namespace="omarchy-image-selector"
colors_file=""
image_dirs=()

while [[ $# -gt 0 ]]; do
  case "$1" in
    --selected)
      selected_image="$2"
      shift 2
      ;;
    --namespace)
      namespace="$2"
      shift 2
      ;;
    --colors-file)
      colors_file="$2"
      shift 2
      ;;
    --help|-h)
      echo "Usage: omarchy-menu-images [--selected <image>] [--namespace <namespace>] [--colors-file <path>] <image-dir>..."
      exit 0
      ;;
    *)
      image_dirs+=("$1")
      shift
      ;;
  esac
done

if (( ${#image_dirs[@]} == 0 )); then
  echo "Usage: omarchy-menu-images [--selected <image>] [--namespace <namespace>] [--colors-file <path>] <image-dir>..." >&2
  exit 1
fi

selection_file=$(mktemp)
trap 'rm -f "$selection_file"' EXIT

image_dirs_env=""
for dir in "${image_dirs[@]}"; do
  if [[ -z $image_dirs_env ]]; then
    image_dirs_env="$dir"
  else
    image_dirs_env+=$'\n'"$dir"
  fi
done

current_image=$(readlink -f "$selected_image" 2>/dev/null)
selected_list_image=""

if [[ -n $current_image ]]; then
  for dir in "${image_dirs[@]}"; do
    if [[ -d $dir ]]; then
      selected_list_image=$(find -L "$dir" -maxdepth 1 -type f -samefile "$current_image" -print -quit 2>/dev/null)
      [[ -n $selected_list_image ]] && break
    fi
  done
fi

cache_dir=${XDG_CACHE_HOME:-$HOME/.cache}/omarchy/image-selector
mkdir -p "$cache_dir"

for dir in "${image_dirs[@]}"; do
  if [[ -d $dir ]]; then
    while IFS= read -r -d '' image; do
      hash=$(md5sum "$image" | cut -d ' ' -f 1)
      thumbnail="$cache_dir/$hash.jpg"

      if [[ ! -f $thumbnail ]]; then
        magick "$image" -auto-orient -resize '1536x864^' -gravity center -extent '1536x864' -strip -quality 82 "$thumbnail"
      fi
    done < <(find -L "$dir" -maxdepth 1 -type f \( -iname '*.jpg' -o -iname '*.jpeg' -o -iname '*.png' -o -iname '*.webp' \) -print0 2>/dev/null)
  fi
done

OMARCHY_IMAGE_SELECTOR_SELECTION_FILE=$selection_file \
  OMARCHY_IMAGE_SELECTOR_DIRS="$image_dirs_env" \
  OMARCHY_IMAGE_SELECTOR_SELECTED="$selected_list_image" \
  OMARCHY_IMAGE_SELECTOR_NAMESPACE="$namespace" \
  OMARCHY_IMAGE_SELECTOR_COLORS_FILE="$colors_file" \
  quickshell -p "$OMARCHY_PATH/default/quickshell/wallpaper-switcher.qml" >/dev/null

if [[ -s $selection_file ]]; then
  cat "$selection_file"
fi