/**
 * 贴纸配置面板
 * 贴纸素材库（emoji / 图片）+ 文字花字 + 位置大小调整
 */
import React, { useCallback, useState } from "react";
import { Drawer, Switch } from "antd";
import type {
  StickerConfig,
  StickerItem,
  StickerType,
  TextStickerPreset,
} from "../types";
import {
  DEFAULT_STICKER_CONFIG,
  DEFAULT_STICKER_ITEM,
  TEXT_STICKER_PRESET_LABELS,
} from "../types";

interface StickerPanelProps {
  open: boolean;
  onClose: () => void;
  config: StickerConfig;
  onChange: (config: StickerConfig) => void;
  totalDuration: number;
}

/** 常用 emoji 素材 */
const EMOJI_LIST = [
  "😀",
  "😂",
  "🥰",
  "😎",
  "🤩",
  "😱",
  "🤔",
  "😴",
  "🥳",
  "😍",
  "❤️",
  "🔥",
  "⭐",
  "✨",
  "💯",
  "👍",
  "👏",
  "🎉",
  "🎵",
  "💪",
  "📌",
  "💡",
  "🎯",
  "✅",
  "❌",
  "⬆️",
  "⬇️",
  "➡️",
  "⭕",
  "🔔",
];

/** 文字花字预设对应的 CSS 样式预览 */
const TEXT_PRESET_STYLES: Record<TextStickerPreset, React.CSSProperties> = {
  normal: { color: "#fff", textShadow: "none" },
  highlight: { color: "#FFD700", textShadow: "0 0 8px rgba(255,215,0,0.6)" },
  bubble: { color: "#fff", background: "rgba(0,0,0,0.5)", borderRadius: 8 },
  neon: { color: "#0ff", textShadow: "0 0 6px #0ff, 0 0 12px #0ff" },
  shadow: { color: "#fff", textShadow: "2px 2px 4px rgba(0,0,0,0.8)" },
  outline: { color: "#fff", WebkitTextStroke: "1px #000" },
  gradient: {
    color: "transparent",
    background: "linear-gradient(90deg,#f093fb,#f5576c)",
    WebkitBackgroundClip: "text",
  },
  handwrite: { color: "#333", fontStyle: "italic", fontFamily: "cursive" },
};

/** 生成唯一 ID */
const genId = () =>
  `sticker_${Date.now()}_${Math.random().toString(36).slice(2, 8)}`;

const StickerPanel: React.FC<StickerPanelProps> = ({
  open,
  onClose,
  config,
  onChange,
  totalDuration,
}) => {
  const [selectedId, setSelectedId] = useState<string | null>(null);
  const [activeTab, setActiveTab] = useState<StickerType>("emoji");

  const selectedSticker = config.items.find((s) => s.id === selectedId) ?? null;

  /** 更新单个贴纸 */
  const updateItem = useCallback(
    (id: string, partial: Partial<StickerItem>) => {
      onChange({
        ...config,
        items: config.items.map((s) =>
          s.id === id ? { ...s, ...partial } : s,
        ),
      });
    },
    [config, onChange],
  );

  /** 添加贴纸 */
  const addSticker = useCallback(
    (type: StickerType, content: string) => {
      const newItem: StickerItem = {
        ...DEFAULT_STICKER_ITEM,
        id: genId(),
        type,
        content,
        duration: totalDuration > 0 ? totalDuration : 5,
        z_index: config.items.length + 1,
      };
      onChange({
        ...config,
        enabled: true,
        items: [...config.items, newItem],
      });
      setSelectedId(newItem.id);
    },
    [config, onChange, totalDuration],
  );

  /** 删除贴纸 */
  const removeSticker = useCallback(
    (id: string) => {
      onChange({
        ...config,
        items: config.items.filter((s) => s.id !== id),
      });
      if (selectedId === id) setSelectedId(null);
    },
    [config, onChange, selectedId],
  );

  /** 重置所有 */
  const handleReset = useCallback(() => {
    onChange({ ...DEFAULT_STICKER_CONFIG, enabled: config.enabled });
    setSelectedId(null);
  }, [config.enabled, onChange]);

  /** 文字花字输入 */
  const [textInput, setTextInput] = useState("");

  return (
    <Drawer
      title="贴纸"
      placement="right"
      width={460}
      open={open}
      onClose={onClose}
      className="sticker-panel-drawer"
    >
      {/* 顶部开关 */}
      <div className="sticker-header">
        <span className="sticker-header-label">启用贴纸</span>
        <Switch
          size="small"
          checked={config.enabled}
          onChange={(checked) => onChange({ ...config, enabled: checked })}
        />
      </div>

      {/* 类型 Tab */}
      <div className="sticker-tabs">
        {(["emoji", "image", "text"] as StickerType[]).map((t) => (
          <button
            key={t}
            className={`sticker-tab${activeTab === t ? " active" : ""}`}
            onClick={() => setActiveTab(t)}
          >
            {t === "emoji"
              ? "表情贴纸"
              : t === "image"
                ? "图片贴纸"
                : "文字花字"}
          </button>
        ))}
      </div>

      {/* Tab 内容区 */}
      <div className="sticker-tab-content">
        {/* Emoji 素材库 */}
        {activeTab === "emoji" && (
          <div className="sticker-emoji-grid">
            {EMOJI_LIST.map((emoji) => (
              <button
                key={emoji}
                className="sticker-emoji-btn"
                onClick={() => addSticker("emoji", emoji)}
              >
                {emoji}
              </button>
            ))}
          </div>
        )}

        {/* 图片贴纸 */}
        {activeTab === "image" && (
          <div className="sticker-image-input">
            <input
              type="text"
              className="sticker-url-input"
              placeholder="输入图片 URL 添加贴纸..."
              onKeyDown={(e) => {
                if (e.key === "Enter" && e.currentTarget.value.trim()) {
                  addSticker("image", e.currentTarget.value.trim());
                  e.currentTarget.value = "";
                }
              }}
            />
            <button
              className="sticker-url-add-btn"
              onClick={() => {
                const input =
                  document.querySelector<HTMLInputElement>(
                    ".sticker-url-input",
                  );
                if (input?.value.trim()) {
                  addSticker("image", input.value.trim());
                  input.value = "";
                }
              }}
            >
              添加
            </button>
          </div>
        )}

        {/* 文字花字 */}
        {activeTab === "text" && (
          <div className="sticker-text-section">
            <div className="sticker-text-input-row">
              <input
                type="text"
                className="sticker-text-input"
                placeholder="输入文字内容..."
                value={textInput}
                onChange={(e) => setTextInput(e.target.value)}
              />
              <button
                className="sticker-text-add-btn"
                disabled={!textInput.trim()}
                onClick={() => {
                  if (textInput.trim()) {
                    addSticker("text", textInput.trim());
                    setTextInput("");
                  }
                }}
              >
                添加
              </button>
            </div>
            <div className="sticker-text-presets">
              <div className="sticker-preset-title">花字预设预览</div>
              <div className="sticker-preset-grid">
                {(
                  Object.keys(TEXT_STICKER_PRESET_LABELS) as TextStickerPreset[]
                ).map((p) => (
                  <div
                    key={p}
                    className="sticker-preset-preview"
                    style={{
                      ...TEXT_PRESET_STYLES[p],
                      background:
                        p === "bubble"
                          ? "rgba(0,0,0,0.5)"
                          : p === "gradient"
                            ? "linear-gradient(90deg,#f093fb,#f5576c)"
                            : "#1a1a2e",
                    }}
                  >
                    <span style={TEXT_PRESET_STYLES[p]}>示例</span>
                    <div className="sticker-preset-name">
                      {TEXT_STICKER_PRESET_LABELS[p]}
                    </div>
                  </div>
                ))}
              </div>
            </div>
          </div>
        )}
      </div>

      {/* 已添加贴纸列表 */}
      {config.items.length > 0 && (
        <div className="sticker-list-section">
          <div className="sticker-section-title">
            已添加贴纸 ({config.items.length})
          </div>
          <div className="sticker-list">
            {config.items.map((item) => (
              <div
                key={item.id}
                className={`sticker-list-item${selectedId === item.id ? " active" : ""}`}
                onClick={() => setSelectedId(item.id)}
              >
                <span className="sticker-list-icon">
                  {item.type === "emoji"
                    ? item.content
                    : item.type === "text"
                      ? "T"
                      : "🖼"}
                </span>
                <span className="sticker-list-name">
                  {item.type === "text"
                    ? item.content.slice(0, 10)
                    : item.type === "emoji"
                      ? "表情贴纸"
                      : "图片贴纸"}
                </span>
                <button
                  className="sticker-list-delete"
                  onClick={(e) => {
                    e.stopPropagation();
                    removeSticker(item.id);
                  }}
                >
                  ✕
                </button>
              </div>
            ))}
          </div>
        </div>
      )}

      {/* 选中贴纸的属性编辑 */}
      {selectedSticker && (
        <div className="sticker-props-section">
          <div className="sticker-section-title">属性调整</div>

          {/* 位置 */}
          <div className="sticker-prop-row">
            <span className="sticker-prop-label">位置 X</span>
            <input
              type="range"
              className="sticker-prop-slider"
              min={0}
              max={100}
              value={selectedSticker.x}
              onChange={(e) =>
                updateItem(selectedSticker.id, { x: Number(e.target.value) })
              }
            />
            <span className="sticker-prop-value">{selectedSticker.x}%</span>
          </div>
          <div className="sticker-prop-row">
            <span className="sticker-prop-label">位置 Y</span>
            <input
              type="range"
              className="sticker-prop-slider"
              min={0}
              max={100}
              value={selectedSticker.y}
              onChange={(e) =>
                updateItem(selectedSticker.id, { y: Number(e.target.value) })
              }
            />
            <span className="sticker-prop-value">{selectedSticker.y}%</span>
          </div>

          {/* 尺寸 */}
          <div className="sticker-prop-row">
            <span className="sticker-prop-label">大小</span>
            <input
              type="range"
              className="sticker-prop-slider"
              min={5}
              max={50}
              value={selectedSticker.width}
              onChange={(e) =>
                updateItem(selectedSticker.id, {
                  width: Number(e.target.value),
                  height: Number(e.target.value),
                })
              }
            />
            <span className="sticker-prop-value">{selectedSticker.width}%</span>
          </div>

          {/* 旋转 */}
          <div className="sticker-prop-row">
            <span className="sticker-prop-label">旋转</span>
            <input
              type="range"
              className="sticker-prop-slider"
              min={-180}
              max={180}
              value={selectedSticker.rotation}
              onChange={(e) =>
                updateItem(selectedSticker.id, {
                  rotation: Number(e.target.value),
                })
              }
            />
            <span className="sticker-prop-value">
              {selectedSticker.rotation}°
            </span>
          </div>

          {/* 透明度 */}
          <div className="sticker-prop-row">
            <span className="sticker-prop-label">透明度</span>
            <input
              type="range"
              className="sticker-prop-slider"
              min={0}
              max={100}
              value={selectedSticker.opacity}
              onChange={(e) =>
                updateItem(selectedSticker.id, {
                  opacity: Number(e.target.value),
                })
              }
            />
            <span className="sticker-prop-value">
              {selectedSticker.opacity}%
            </span>
          </div>

          {/* 时间 */}
          <div className="sticker-prop-row">
            <span className="sticker-prop-label">开始</span>
            <input
              type="number"
              className="sticker-prop-number"
              min={0}
              max={totalDuration}
              step={0.1}
              value={selectedSticker.start_time}
              onChange={(e) =>
                updateItem(selectedSticker.id, {
                  start_time: Number(e.target.value),
                })
              }
            />
            <span className="sticker-prop-label">时长</span>
            <input
              type="number"
              className="sticker-prop-number"
              min={0}
              max={totalDuration}
              step={0.1}
              value={selectedSticker.duration}
              onChange={(e) =>
                updateItem(selectedSticker.id, {
                  duration: Number(e.target.value),
                })
              }
            />
          </div>

          {/* 文字贴纸特有属性 */}
          {selectedSticker.type === "text" && (
            <>
              <div className="sticker-prop-row">
                <span className="sticker-prop-label">花字</span>
                <select
                  className="sticker-prop-select"
                  value={selectedSticker.text_preset}
                  onChange={(e) =>
                    updateItem(selectedSticker.id, {
                      text_preset: e.target.value as TextStickerPreset,
                    })
                  }
                >
                  {(
                    Object.keys(
                      TEXT_STICKER_PRESET_LABELS,
                    ) as TextStickerPreset[]
                  ).map((p) => (
                    <option key={p} value={p}>
                      {TEXT_STICKER_PRESET_LABELS[p]}
                    </option>
                  ))}
                </select>
              </div>
              <div className="sticker-prop-row">
                <span className="sticker-prop-label">字号</span>
                <input
                  type="range"
                  className="sticker-prop-slider"
                  min={12}
                  max={72}
                  value={selectedSticker.font_size}
                  onChange={(e) =>
                    updateItem(selectedSticker.id, {
                      font_size: Number(e.target.value),
                    })
                  }
                />
                <span className="sticker-prop-value">
                  {selectedSticker.font_size}px
                </span>
              </div>
              <div className="sticker-prop-row">
                <span className="sticker-prop-label">颜色</span>
                <input
                  type="color"
                  className="sticker-prop-color"
                  value={selectedSticker.text_color}
                  onChange={(e) =>
                    updateItem(selectedSticker.id, {
                      text_color: e.target.value,
                    })
                  }
                />
              </div>
            </>
          )}

          {/* 预览 */}
          <div className="sticker-preview-box">
            <div
              className="sticker-preview-item"
              style={{
                left: `${selectedSticker.x}%`,
                top: `${selectedSticker.y}%`,
                width: `${selectedSticker.width}%`,
                height: `${selectedSticker.width}%`,
                transform: `translate(-50%, -50%) rotate(${selectedSticker.rotation}deg)`,
                opacity: selectedSticker.opacity / 100,
                fontSize:
                  selectedSticker.type === "text"
                    ? `${selectedSticker.font_size}px`
                    : undefined,
                ...TEXT_PRESET_STYLES[selectedSticker.text_preset],
              }}
            >
              {selectedSticker.type === "emoji" && selectedSticker.content}
              {selectedSticker.type === "text" && selectedSticker.content}
              {selectedSticker.type === "image" && (
                <img
                  src={selectedSticker.content}
                  alt="sticker"
                  style={{
                    width: "100%",
                    height: "100%",
                    objectFit: "contain",
                  }}
                />
              )}
            </div>
          </div>
        </div>
      )}

      {/* 底部重置 */}
      <div className="sticker-footer">
        <button className="sticker-reset-btn" onClick={handleReset}>
          清空所有贴纸
        </button>
      </div>
    </Drawer>
  );
};

export default StickerPanel;