import { useEffect, useCallback } from 'react';
import { useInputBarStore } from '../store/inputBar';
import { useGenerationStore } from '../store/generation';
import { Dropdown } from './Dropdown';
import type { CreationMode, AspectRatio, Duration, GenerationType, ModelOption } from '../types';
import styles from './Toolbar.module.css';

const VideoIcon = () => (
  <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
    <polygon points="23 7 16 12 23 17 23 7" />
    <rect x="1" y="5" width="15" height="14" rx="2" ry="2" />
  </svg>
);

const ImageIcon = () => (
  <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5">
    <rect x="3" y="3" width="18" height="18" rx="2" />
    <circle cx="8.5" cy="8.5" r="1.5" />
    <polyline points="21 15 16 10 5 21" />
  </svg>
);

const DiamondIcon = () => (
  <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
    <path d="M12 2L2 7l10 5 10-5-10-5zM2 17l10 5 10-5M2 12l10 5 10-5" />
  </svg>
);

const LightningIcon = () => (
  <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5">
    <path d="M13 2L3 14h9l-1 8 10-12h-9l1-8z" />
  </svg>
);

const StarIcon = () => (
  <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
    <path d="M12 2l3.09 6.26L22 9.27l-5 4.87 1.18 6.88L12 17.77l-6.18 3.25L7 14.14 2 9.27l6.91-1.01L12 2z" />
  </svg>
);

const SwapIcon = () => (
  <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round">
    <path d="M7 12h10M17 12l-3-3M17 12l-3 3M7 12l3-3M7 12l3 3" />
  </svg>
);

const MonitorIcon = () => (
  <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
    <rect x="2" y="3" width="20" height="14" rx="2" />
    <line x1="8" y1="21" x2="16" y2="21" />
    <line x1="12" y1="17" x2="12" y2="21" />
  </svg>
);

const ClockIcon = () => (
  <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
    <circle cx="12" cy="12" r="10" />
    <polyline points="12 6 12 12 16 14" />
  </svg>
);

const ChevronDown = () => (
  <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
    <polyline points="6 9 12 15 18 9" />
  </svg>
);

const generationTypeItems = [
  { label: '视频生成', value: 'video' as GenerationType, icon: <VideoIcon /> },
  { label: '图片生成', value: 'image' as GenerationType, icon: <ImageIcon /> },
];

const modelItems = [
  { label: 'Seedance 2.0', value: 'seedance_2.0' as ModelOption, icon: <DiamondIcon /> },
  { label: 'Seedance 2.0 Fast', value: 'seedance_2.0_fast' as ModelOption, icon: <LightningIcon /> },
];

const modeItems = [
  { label: '全能参考', value: 'universal' as CreationMode, icon: <StarIcon /> },
  { label: '首尾帧', value: 'keyframe' as CreationMode, icon: <SwapIcon /> },
];

const ratioItems = [
  { label: '16:9', value: '16:9' as AspectRatio },
  { label: '9:16', value: '9:16' as AspectRatio },
  { label: '1:1', value: '1:1' as AspectRatio },
  { label: '21:9', value: '21:9' as AspectRatio },
  { label: '4:3', value: '4:3' as AspectRatio },
  { label: '3:4', value: '3:4' as AspectRatio },
];

const durationItems = [
  { label: '5s', value: '5' },
  { label: '10s', value: '10' },
  { label: '15s', value: '15' },
];

const modeLabels: Record<CreationMode, string> = {
  universal: '全能参考',
  keyframe: '首尾帧',
};

export function Toolbar() {
  const generationType = useInputBarStore((s) => s.generationType);
  const setGenerationType = useInputBarStore((s) => s.setGenerationType);
  const model = useInputBarStore((s) => s.model);
  const setModel = useInputBarStore((s) => s.setModel);
  const mode = useInputBarStore((s) => s.mode);
  const switchMode = useInputBarStore((s) => s.switchMode);
  const aspectRatio = useInputBarStore((s) => s.aspectRatio);
  const setAspectRatio = useInputBarStore((s) => s.setAspectRatio);
  const duration = useInputBarStore((s) => s.duration);
  const setDuration = useInputBarStore((s) => s.setDuration);
  const isSubmittable = useInputBarStore((s) => s.canSubmit());
  const triggerInsertAt = useInputBarStore((s) => s.triggerInsertAt);

  const isKeyframe = mode === 'keyframe';

  const addTask = useGenerationStore((s) => s.addTask);

  const handleSend = useCallback(() => {
    if (!isSubmittable) return;
    addTask();
  }, [isSubmittable, addTask]);

  const handleInsertAt = useCallback(() => {
    triggerInsertAt();
  }, [triggerInsertAt]);

  // Keyboard shortcut: Ctrl/Cmd + Enter
  useEffect(() => {
    const handler = (e: KeyboardEvent) => {
      if ((e.ctrlKey || e.metaKey) && e.key === 'Enter') {
        handleSend();
      }
    };
    document.addEventListener('keydown', handler);
    return () => document.removeEventListener('keydown', handler);
  }, [handleSend]);

  return (
    <div className={styles.toolbar}>
      {/* Generation type dropdown */}
      <Dropdown
        items={generationTypeItems}
        value={generationType}
        onSelect={(v) => setGenerationType(v as GenerationType)}
        minWidth={150}
        trigger={
          <button className={`${styles.btn} ${styles.primary}`}>
            <VideoIcon />
            <span className={styles.label}>
              {generationType === 'video' ? '视频生成' : '图片生成'}
            </span>
            <ChevronDown />
          </button>
        }
      />

      {/* Model selector dropdown */}
      <Dropdown
        items={modelItems}
        value={model}
        onSelect={(v) => setModel(v as ModelOption)}
        minWidth={190}
        trigger={
          <button className={styles.btn}>
            <DiamondIcon />
            <span className={styles.label}>
              {model === 'seedance_2.0' ? 'Seedance 2.0' : 'Seedance 2.0 Fast'}
            </span>
          </button>
        }
      />

      {/* Mode selector */}
      <Dropdown
        items={modeItems}
        value={mode}
        onSelect={(v) => switchMode(v as CreationMode)}
        minWidth={150}
        trigger={
          <button className={styles.btn}>
            {isKeyframe ? <SwapIcon /> : <StarIcon />}
            <span className={styles.label}>{modeLabels[mode]}</span>
            <ChevronDown />
          </button>
        }
      />

      {/* Aspect ratio */}
      {isKeyframe ? (
        <button className={styles.btn} style={{ opacity: 0.5, pointerEvents: 'none' }}>
          <MonitorIcon />
          <span className={styles.label}>自动匹配</span>
        </button>
      ) : (
        <Dropdown
          items={ratioItems}
          value={aspectRatio}
          onSelect={(v) => setAspectRatio(v as AspectRatio)}
          minWidth={100}
          trigger={
            <button className={styles.btn}>
              <MonitorIcon />
              <span className={styles.label}>{aspectRatio}</span>
            </button>
          }
        />
      )}

      {/* Duration */}
      <Dropdown
        items={durationItems}
        value={String(duration)}
        onSelect={(v) => setDuration(Number(v) as Duration)}
        minWidth={100}
        trigger={
          <button className={styles.btn}>
            <ClockIcon />
            <span className={styles.label}>{duration}s</span>
          </button>
        }
      />

      {/* @ button - universal mode only */}
      {!isKeyframe && (
        <button className={styles.btn} onClick={handleInsertAt}>
          <span style={{ fontSize: 15, fontWeight: 600 }}>@</span>
        </button>
      )}

      {/* Spacer */}
      <div className={styles.spacer} />

      {/* Credits indicator */}
      <div className={styles.credits}>
        <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
          <line x1="12" y1="5" x2="12" y2="19" />
          <line x1="5" y1="12" x2="19" y2="12" />
        </svg>
        <span>30</span>
      </div>

      {/* Send button */}
      <button
        className={`${styles.sendBtn} ${isSubmittable ? styles.sendEnabled : styles.sendDisabled}`}
        onClick={handleSend}
      >
        <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="#fff" strokeWidth="2.5" strokeLinecap="round" strokeLinejoin="round">
          <line x1="12" y1="19" x2="12" y2="5" />
          <polyline points="5 12 12 5 19 12" />
        </svg>
      </button>
    </div>
  );
}