import { For } from 'solid-js';
import type { DeckStore } from '../hooks/deckStore';

export interface LayerEditorPanelProps {
  store: DeckStore;
}

const ORIENTATION_OPTIONS = [
  { value: 'n', label: '↑ 北' },
  { value: 'e', label: '→ 东' },
  { value: 's', label: '↓ 南' },
  { value: 'w', label: '← 西' }
] as const;

/**
 * 图层编辑面板：图层可见性切换、位置编辑、复制代码
 */
export function LayerEditorPanel(props: LayerEditorPanelProps) {
  const { store } = props;

  const updateLayerOrientation = (layerProp: string, orientation: 'n' | 's' | 'e' | 'w') => {
    const layer = store.state.layerConfigs.find(l => l.prop === layerProp);
    if (layer) {
      store.actions.updateLayerConfig(layerProp, { ...layer, orientation });
    }
  };

  const updateLayerFontSize = (layerProp: string, fontSize?: number) => {
    const layer = store.state.layerConfigs.find(l => l.prop === layerProp);
    if (layer) {
      store.actions.updateLayerConfig(layerProp, { ...layer, fontSize });
    }
  };

  return (
    <div class="w-64 flex-shrink-0">
      <h3 class="font-bold mb-2 mt-0">图层</h3>

      <div class="space-y-2">
        <For each={store.state.layerConfigs}>
          {(layer) => (
            <div class="flex flex-row flex-wrap gap-1 p-2 bg-gray-50 rounded">
              <div class="flex items-center gap-2">
                <input
                  type="checkbox"
                  checked={layer.visible}
                  onChange={() => store.actions.toggleLayerVisible(layer.prop)}
                  class="cursor-pointer"
                />
                <span class="text-sm flex-1">{layer.prop}</span>
              </div>
              {layer.visible && (
                <>
                  <button
                    onClick={() => store.actions.setEditingLayer(store.state.editingLayer === layer.prop ? null : layer.prop)}
                    class={`text-xs px-2 py-1 rounded cursor-pointer ${
                      store.state.editingLayer === layer.prop
                        ? 'bg-blue-500 text-white'
                        : 'bg-gray-200 text-gray-700 hover:bg-gray-300'
                    }`}
                  >
                    {store.state.editingLayer === layer.prop ? '✓ 框选' : '框选'}
                  </button>
                  <div class="flex items-center gap-2">
                    <select
                      value={layer.orientation || 'n'}
                      onChange={(e) => updateLayerOrientation(layer.prop, e.target.value as 'n' | 's' | 'e' | 'w')}
                      class="text-xs px-2 py-1 rounded border border-gray-300 bg-white cursor-pointer"
                    >
                      <For each={ORIENTATION_OPTIONS}>
                        {(opt) => (
                          <option value={opt.value}>{opt.label}</option>
                        )}
                      </For>
                    </select>
                  </div>
                  <div class="flex items-center gap-2">
                    <label class="text-xs text-gray-600">字体/mm</label>
                    <input
                      type="number"
                      value={layer.fontSize || ''}
                      placeholder="默认"
                      onChange={(e) => {
                        const value = e.target.value;
                        updateLayerFontSize(layer.prop, value ? Number(value) : undefined);
                      }}
                      class="w-16 text-xs px-2 py-1 rounded border border-gray-300 bg-white"
                      step="0.1"
                      min="0.1"
                    />
                  </div>
                </>
              )}
            </div>
          )}
        </For>
      </div>

      <hr class="my-4" />

      <button
        onClick={store.actions.copyCode}
        class="w-full bg-blue-600 hover:bg-blue-700 text-white px-3 py-2 rounded text-sm font-medium cursor-pointer"
      >
        📋 复制代码
      </button>
    </div>
  );
}