import { useEffect, useMemo, useState } from 'react';
import ChartToolMenu, { type ToolMenuSection } from './ChartToolMenu';
import {
  IconBrush,
  IconCrosshair,
  IconCursor,
  IconFib,
  IconLayers,
  IconLock,
  IconPlus,
  IconRuler,
  IconSmile,
  IconText,
  IconResetView,
  IconTrash,
  IconTrendline,
  IconZoom,
  IconZoomOut,
} from './ChartIcons';

type ActiveTool = 'cursor' | 'fib-retracement';

type Props = {
  timeframe: string;
  activeTool: ActiveTool;
  hasFib: boolean;
  isLayersOpen: boolean;
  onToolChange: (tool: ActiveTool) => void;
  onToggleLayers: () => void;
  onZoomIn: () => void;
  onZoomOut: () => void;
  onResetView: () => void;
  onClearFib: () => void;
};

export default function ChartSideToolbar({
  timeframe,
  activeTool,
  hasFib,
  isLayersOpen,
  onToolChange,
  onToggleLayers,
  onZoomIn,
  onZoomOut,
  onResetView,
  onClearFib,
}: Props) {
  const [openMenu, setOpenMenu] = useState<'fib' | null>(null);

  useEffect(() => {
    if (!openMenu) return;
    const onKeyDown = (e: KeyboardEvent) => {
      if (e.key === 'Escape') setOpenMenu(null);
    };
    window.addEventListener('keydown', onKeyDown);
    return () => window.removeEventListener('keydown', onKeyDown);
  }, [openMenu]);

  const fibMenuSections: ToolMenuSection[] = useMemo(
    () => [
      {
        id: 'fib',
        title: 'FIBONACCI',
        items: [
          { id: 'fib-retracement', label: 'Fib Retracement', icon: <IconFib />, shortcut: 'Click 2 points' },
          { id: 'fib-tb-ext', label: 'Trend-Based Fib Extension', icon: <IconTrendline /> },
          { id: 'fib-channel', label: 'Fib Channel', icon: <IconFib /> },
          { id: 'fib-time-zone', label: 'Fib Time Zone', icon: <IconFib /> },
          { id: 'fib-speed-fan', label: 'Fib Speed Resistance Fan', icon: <IconFib /> },
          { id: 'fib-tb-time', label: 'Trend-Based Fib Time', icon: <IconTrendline /> },
          { id: 'fib-circles', label: 'Fib Circles', icon: <IconFib /> },
          { id: 'fib-spiral', label: 'Fib Spiral', icon: <IconFib /> },
          { id: 'fib-speed-arcs', label: 'Fib Speed Resistance Arcs', icon: <IconFib /> },
          { id: 'fib-wedge', label: 'Fib Wedge', icon: <IconFib /> },
          { id: 'pitchfan', label: 'Pitchfan', icon: <IconTrendline /> },
        ],
      },
      {
        id: 'gann',
        title: 'GANN',
        items: [
          { id: 'gann-box', label: 'Gann Box', icon: <IconTrendline /> },
          { id: 'gann-square-fixed', label: 'Gann Square Fixed', icon: <IconTrendline /> },
          { id: 'gann-fan', label: 'Gann Fan', icon: <IconTrendline /> },
        ],
      },
    ],
    []
  );

  return (
    <div className="chartTools">
      <div className="chartSideToolbar">
        <button
          type="button"
          className={['chartToolBtn', activeTool === 'cursor' ? 'chartToolBtn--active' : ''].filter(Boolean).join(' ')}
          title="Cursor"
          aria-label="Cursor"
          onClick={() => {
            onToolChange('cursor');
            setOpenMenu(null);
          }}
        >
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconCursor />
          </span>
        </button>

        <button type="button" className="chartToolBtn" title="Crosshair" aria-label="Crosshair" disabled>
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconCrosshair />
          </span>
        </button>

        <button type="button" className="chartToolBtn" title="Add" aria-label="Add" disabled>
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconPlus />
          </span>
        </button>

        <button type="button" className="chartToolBtn" title="Trendline" aria-label="Trendline" disabled>
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconTrendline />
          </span>
        </button>

        <button
          type="button"
          className={['chartToolBtn', activeTool === 'fib-retracement' ? 'chartToolBtn--active' : ''].filter(Boolean).join(' ')}
          title="Fibonacci"
          aria-label="Fibonacci"
          onClick={() => setOpenMenu((m) => (m === 'fib' ? null : 'fib'))}
        >
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconFib />
          </span>
        </button>

        <button type="button" className="chartToolBtn" title="Brush" aria-label="Brush" disabled>
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconBrush />
          </span>
        </button>

        <button type="button" className="chartToolBtn" title="Text" aria-label="Text" disabled>
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconText />
          </span>
        </button>

        <button type="button" className="chartToolBtn" title="Emoji" aria-label="Emoji" disabled>
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconSmile />
          </span>
        </button>

        <button type="button" className="chartToolBtn" title="Ruler" aria-label="Ruler" disabled>
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconRuler />
          </span>
        </button>

        <div className="chartToolBtn__spacer" />

        <button type="button" className="chartToolBtn" title="Zoom In" aria-label="Zoom In" onClick={onZoomIn}>
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconZoom />
          </span>
        </button>

        <button type="button" className="chartToolBtn" title="Zoom Out" aria-label="Zoom Out" onClick={onZoomOut}>
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconZoomOut />
          </span>
        </button>

        <button type="button" className="chartToolBtn" title="Reset View" aria-label="Reset View" onClick={onResetView}>
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconResetView />
          </span>
        </button>

        <button type="button" className="chartToolBtn" title="Lock" aria-label="Lock" disabled>
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconLock />
          </span>
        </button>

        <button
          type="button"
          className="chartToolBtn"
          title="Clear Fib"
          aria-label="Clear Fib"
          onClick={onClearFib}
          disabled={!hasFib}
        >
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconTrash />
          </span>
        </button>

        <button
          type="button"
          className={['chartToolBtn', isLayersOpen ? 'chartToolBtn--active' : ''].filter(Boolean).join(' ')}
          title="Layers"
          aria-label="Layers"
          onClick={onToggleLayers}
        >
          <span className="chartToolBtn__icon" aria-hidden="true">
            <IconLayers />
          </span>
        </button>
      </div>

      {openMenu === 'fib' ? (
        <>
          <div className="chartToolMenuBackdrop" onClick={() => setOpenMenu(null)} />
          <ChartToolMenu
            timeframeLabel={timeframe}
            sections={fibMenuSections}
            onSelectItem={(id) => {
              if (id === 'fib-retracement') onToolChange('fib-retracement');
              setOpenMenu(null);
            }}
          />
        </>
      ) : null}
    </div>
  );
}