<script setup>
import { ref, inject, onMounted } from "vue";
import { Skeleton } from "ant-design-vue";
import { useI18n } from 'vue-i18n'
const {t} = useI18n()

const loading = ref(true);
const shortcuts = ref([]);
const keyboardManager = inject("keyboardManager", null);
const platform = ref({});

// 初始化键盘快捷键信息
onMounted(() => {
  // 添加延迟以显示骨架屏效果
  setTimeout(() => {
    if (keyboardManager) {
      // 使用KeyboardManager的平台检测
      platform.value = {
        isMac: keyboardManager.platform === "mac",
        isIOS: keyboardManager.platform === "ios",
        isIPad: keyboardManager.platform === "ios" && /iPad/.test(window.navigator.userAgent),
        isTouchDevice: keyboardManager.isTouchDevice,
        isWindows: keyboardManager.platform === "windows",
        isAndroid: keyboardManager.platform === "android",
      };

      // 使用KeyboardManager的API获取所有快捷键
      const managerShortcuts = keyboardManager.getShortcuts();

      // 转换为组件所需的格式
      shortcuts.value = convertShortcuts(managerShortcuts);
    } else {
      // 如果没有注入keyboardManager，使用默认检测和默认快捷键
      platform.value = detectPlatform();
      shortcuts.value = generateDefaultShortcuts();
    }

    loading.value = false;
  }, 500);
});

// 转换KeyboardManager返回的快捷键格式为组件需要的格式
function convertShortcuts(managerShortcuts) {
  // 转换快捷键列表
  const result = [];

  // 基本的Action到显示名称的映射
  const actionDisplayMap = {
    undo: {
		label:t('Canvas.Undo'),
		value:"撤销",
	},
    redo: {
		label:t('Canvas.Redo'),
		value:"重做",
	},
    delete: {
		label:t('Canvas.DeleteSelectedElement'),
		value:"删除选中元素",
	},
    selectAll: {
		label:"全选",
		value:"全选",
	},
    copy: {
		label:t('Canvas.Copy'),
		value:"复制",
	},
    paste: {
		label:t('Canvas.Pase'),
		value:"粘贴",
	},
    cut: {
		label:t('Canvas.Cut'),
		value:"剪切",
	},
	save: "保存",
    selectTool: "选择工具",
    increaseBrushSize: {
		label:t('Canvas.DecreaseBrush'),
		value:"减少画笔大小",
	},
    decreaseBrushSize: {
		label:t('Canvas.IncreaseBrush'),
		value:"增加画笔大小",
	},
    toggleTempTool: "临时切换工具",
    // newLayer: "新建图层",
    // groupLayers: "组合图层",
    // ungroupLayers: "取消组合",
    // mergeLayers: "合并图层",
  };

  // 工具ID到显示名称的映射
  const toolDisplayMap = {
    select: {
		label:t('Canvas.SelectionMode'),
		value:"选择模式",
	},
    draw: {
		label:t('Canvas.PaintingMode'),
		value:"绘制模式",
	},
    eraser: {
		label:t('Canvas.EraserMode'),
		value:"橡皮擦模式",
	},
    // eyedropper: t('Canvas.Cut'),
    // pan: '移动画布',
	pan: {
		label:t('Canvas.MoveCanvas'),
		value:"移动画布",
	},
    lasso: {
		label:t('Canvas.LassoTool'),
		value:"套索工具",
	},
    // area_custom: t('Canvas.Cut'),
    // wave: t('Canvas.Cut'),
    liquify: {
		label:t('Canvas.LiquifyTool'),
		value:"液化工具",
	},
  };

  // 处理每个快捷键
  for (const shortcut of managerShortcuts) {
    let actionDisplay = actionDisplayMap[shortcut.action] || shortcut.action;

    // 特殊处理工具选择
    if (shortcut.action === "selectTool" && shortcut.param && toolDisplayMap[shortcut.param]) {
      actionDisplay = toolDisplayMap[shortcut.param];
    }

    result.push({
      action: actionDisplay,
      windows: shortcut.key.replace(/cmdOrCtrl\+/g, "Ctrl+"),
      mac: shortcut.key.replace(/cmdOrCtrl\+/g, "⌘+"),
      touch: shortcut.touch || t('Canvas.touchTools'),
      displayKey: shortcut.displayKey,
    });
  }

  // 添加一些组件特定的快捷键
  result.push({
    action: t('Canvas.ZoomCanvas'),
    windows: t('Canvas.MouseWheel'),
    mac: t('Canvas.MacZoomCanvas'),
    touch: "双指捏合",
  });

  return result;
}

// 检测平台 - 作为备用
function detectPlatform() {
  const userAgent = window.navigator.userAgent;
  return {
    isMac: /Mac/.test(userAgent),
    isIOS: /iPad|iPhone|iPod/.test(userAgent) && !window.MSStream,
    isIPad: /iPad/.test(userAgent),
    isTouchDevice: "ontouchstart" in window || navigator.maxTouchPoints > 0,
    isWindows: /Win/.test(userAgent),
    isAndroid: /Android/.test(userAgent),
  };
}

// 生成默认快捷键描述
function generateDefaultShortcuts() {
  return [
    {
      action: "撤销",
      windows: "Ctrl+Z",
      mac: "⌘+Z",
      touch: "双指向右轻扫",
    },
    {
      action: "重做",
      windows: "Ctrl+Y 或 Ctrl+Shift+Z",
      mac: "⌘+Shift+Z",
      touch: "双指向左轻扫",
    },
    {
      action: "删除选中元素",
      windows: "Delete 或 Backspace",
      mac: "Delete 或 ⌫",
      touch: "长按选中元素后点击删除",
    },
    // {
    //   action: "全选",
    //   windows: "Ctrl+A",
    //   mac: "⌘+A",
    //   touch: "无",
    // },
    {
      action: "复制",
      windows: "Ctrl+C",
      mac: "⌘+C",
      touch: "无",
    },
    {
      action: "粘贴",
      windows: "Ctrl+V",
      mac: "⌘+V",
      touch: "无",
    },
    {
      action: "剪切",
      windows: "Ctrl+X",
      mac: "⌘+X",
      touch: "无",
    },
    {
      action: "缩放画布",
      windows: "鼠标滚轮",
      mac: "鼠标滚轮 或 触控板缩放手势",
      touch: "双指捏合",
    },
    {
      action: "移动画布",
      windows: "Alt+拖动 或 鼠标中键拖动",
      mac: "Option+拖动 或 触控板双指拖动",
      touch: "双指拖动",
    },
    {
      action: "绘画模式",
      windows: "B",
      mac: "B",
      touch: "点击画笔工具",
    },
    {
      action: "选择模式",
      windows: "M",
      mac: "M",
      touch: "点击选择工具",
    },
    {
      action: "橡皮擦模式",
      windows: "E",
      mac: "E",
      touch: "点击橡皮擦工具",
    },
    // {
    //   action: "吸色工具",
    //   windows: "I",
    //   mac: "I",
    //   touch: "点击吸色工具",
    // },
    {
      action: "增加笔触大小",
      windows: "]",
      mac: "]",
      touch: "拖动笔刷大小滑块",
    },
    {
      action: "减小笔触大小",
      windows: "[",
      mac: "[",
      touch: "拖动笔刷大小滑块",
    },
    {
      action: "增加材质图片大小",
      windows: "Shift+]",
      mac: "⇧+]",
      touch: "拖动材质大小滑块",
    },
    {
      action: "减小材质图片大小",
      windows: "Shift+[",
      mac: "⇧+[",
      touch: "拖动材质大小滑块",
    },
    {
      action: "上传图片",
      windows: "Ctrl+O",
      mac: "⌘+O",
      touch: "点击上传按钮",
    },
  ];
}

// 获取当前平台的快捷键文本
function getShortcutForCurrentPlatform(shortcut) {
  if (platform.value.isTouchDevice) {
    return shortcut.touch;
  } else if (platform.value.isMac) {
    return shortcut.displayKey || shortcut.mac;
  } else {
    return shortcut.displayKey || shortcut.windows;
  }
}

// 按分类获取快捷键
function getShortcutsByCategory(category) {
  const categoryMap = {
    // basic: ["撤销", "重做", "全选", "复制", "粘贴", "剪切", "删除选中元素", "上传图片"],
    basic: ["撤销", "重做", "复制", "粘贴", "剪切", "删除选中元素", "上传图片"],
    view: ["缩放画布", "移动画布"],
    tools: [
      "绘画模式",
      "选择模式",
      "橡皮擦模式",
      // "吸色工具",
      "套索工具",
      // "自由选区工具",
      // "波浪工具",
      "液化工具",
    ],
    brush: ["增加笔触大小", "减小笔触大小", "增加材质图片大小", "减小材质图片大小"],
    // layer: ["新建图层", "组合图层", "取消组合", "合并图层"],
  };

  return shortcuts.value.filter((s) => categoryMap[category]?.includes(s.action.value));
}
</script>

<template>
  <div class="keyboard-shortcut-help">
    <h2>{{ $t('Canvas.KeyboardShortcutsOperationGuide') }}</h2>

    <Skeleton active :loading="loading">
      <div class="platform-info">
        {{$t('Canvas.TheDetectedPlatform')}}:
        <span v-if="platform.isMac">MacOS</span>
        <span v-else-if="platform.isWindows">Windows</span>
        <span v-else-if="platform.isIPad">iPad</span>
        <span v-else-if="platform.isIOS">iOS</span>
        <span v-else-if="platform.isAndroid">Android</span>
        <span v-else>{{ $t('Canvas.other') }}</span>
        <span v-if="platform.isTouchDevice"> ({{ $t('Canvas.touchDevice') }})</span>
      </div>

      <div class="shortcuts-category">
        <h3> {{$t('Canvas.BasicOperations')}}</h3>
        <table class="shortcuts-table">
          <thead>
            <tr>
              <th>{{$t('Canvas.BasicOperations')}}</th>
              <th>{{$t('Canvas.ShortcutGesture')}}</th>
            </tr>
          </thead>
          <tbody>
            <tr v-for="item in getShortcutsByCategory('basic')" :key="item.action.label">
              <td>{{ item.action.label }}</td>
              <td>{{ getShortcutForCurrentPlatform(item) }}</td>
            </tr>
          </tbody>
        </table>
      </div>

      <div class="shortcuts-category">
        <h3>{{ $t('Canvas.viewOperations') }}</h3>
        <table class="shortcuts-table">
          <thead>
            <tr>
              <th>{{ $t('Canvas.Operation') }}</th>
              <th>{{ $t('Canvas.ShortcutGesture') }}</th>
            </tr>
          </thead>
          <tbody>
            <tr v-for="item in getShortcutsByCategory('view')" :key="item.action.label">
              <td>{{ item.action.label }}</td>
              <td>{{ getShortcutForCurrentPlatform(item) }}</td>
            </tr>
          </tbody>
        </table>
      </div>

      <div class="shortcuts-category">
        <h3>{{ $t('Canvas.toolSwitching') }}</h3>
        <table class="shortcuts-table">
          <thead>
            <tr>
				<th>{{ $t('Canvas.Operation') }}</th>
				<th>{{ $t('Canvas.ShortcutGesture') }}</th>
            </tr>
          </thead>
          <tbody>
            <tr v-for="item in getShortcutsByCategory('tools')" :key="item.action.label">
              <td>{{ item.action.label }}</td>
              <td>{{ getShortcutForCurrentPlatform(item) }}</td>
            </tr>
          </tbody>
        </table>
      </div>

      <div class="shortcuts-category">
        <h3>{{ $t('Canvas.toolSwitching') }}</h3>
        <table class="shortcuts-table">
          <thead>
            <tr>
				<th>{{ $t('Canvas.Operation') }}</th>
				<th>{{ $t('Canvas.ShortcutGesture') }}</th>
            </tr>
          </thead>
          <tbody>
            <tr v-for="item in getShortcutsByCategory('brush')" :key="item.action.label">
              <td>{{ item.action.label }}</td>
              <td>{{ getShortcutForCurrentPlatform(item) }}</td>
            </tr>
          </tbody>
        </table>
      </div>

      <!-- <div class="shortcuts-category">
        <h3>图层操作</h3>
        <table class="shortcuts-table">
          <thead>
            <tr>
              <th>操作</th>
              <th>快捷键/手势</th>
            </tr>
          </thead>
          <tbody>
            <tr v-for="item in getShortcutsByCategory('layer')" :key="item.action.label">
              <td>{{ item.action.label }}</td>
              <td>{{ getShortcutForCurrentPlatform(item) }}</td>
            </tr>
          </tbody>
        </table>
      </div> -->

      <div class="touch-tips" v-if="platform.isTouchDevice">
        <h3>{{ $t('Canvas.touchDevicePrompts') }}</h3>
        <ul>
          <li>{{ $t('Canvas.touchDevicePrompts_1') }}</li>
          <li>{{ $t('Canvas.touchDevicePrompts_2') }}</li>
          <li>{{ $t('Canvas.touchDevicePrompts_3') }}</li>
          <li>{{ $t('Canvas.touchDevicePrompts_4') }}</li>
          <li>{{ $t('Canvas.touchDevicePrompts_5') }}</li>
          <li>{{ $t('Canvas.touchDevicePrompts_6') }}</li>
        </ul>
      </div>
    </Skeleton>
  </div>
</template>

<style scoped>
.keyboard-shortcut-help {
  padding: 20px;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
  max-width: 600px;
  margin: 0 auto;
}

h2 {
  margin-top: 0;
  margin-bottom: 16px;
  font-size: 18px;
}

h3 {
  font-size: 16px;
  margin-top: 20px;
  margin-bottom: 10px;
  padding-bottom: 5px;
  border-bottom: 1px solid #eaeaea;
}

.platform-info {
  margin-bottom: 16px;
  padding: 8px;
  background-color: #f0f9ff;
  border-radius: 4px;
  font-size: 14px;
}

.shortcuts-category {
  margin-bottom: 20px;
}

.shortcuts-table {
  width: 100%;
  border-collapse: collapse;
}

.shortcuts-table th,
.shortcuts-table td {
  border: 1px solid #eaeaea;
  padding: 8px 10px;
  text-align: left;
}

.shortcuts-table th {
  background-color: #F9FAFA;
}

.touch-tips {
  margin-top: 20px;
  padding: 10px;
  background-color: #fffbeb;
  border-radius: 4px;
  border-left: 3px solid #fbbf24;
}

.touch-tips ul {
  margin: 10px 0 0;
  padding-left: 20px;
}

.touch-tips li {
  margin-bottom: 5px;
}

@media (pointer: coarse) {
  .keyboard-shortcut-help {
    padding: 15px;
  }

  .shortcuts-table th,
  .shortcuts-table td {
    padding: 12px 8px;
    font-size: 15px;
  }
}
</style>
