import { useEffect, useRef, type ReactNode } from 'react'
import { Boxes, Milestone, X } from 'lucide-react'

import type { WorkflowNodeDefinition } from '../../api/workflows'
import type { WorkflowGraphFamily } from './workflowNodeLibrary'
import { WorkflowAuthoringSectionContent } from './WorkflowAuthoringSectionContent'
import { WorkflowAuthoringSectionSelector } from './WorkflowAuthoringSectionSelector'
import {
  type WorkflowAuthoringActions,
  type WorkflowAuthoringPosition,
} from './workflowAuthoringActions'
import { useWorkflowAuthoringSurface } from './workflowAuthoringSurface'

export const NODE_COMMAND_MENU_WIDTH = 380

interface NodeCommandMenuProps {
  definitions: WorkflowNodeDefinition[]
  graphFamily: WorkflowGraphFamily
  activeSteps?: string[]
  actions: WorkflowAuthoringActions
  preferredPosition?: WorkflowAuthoringPosition
  onClose: () => void
  renderIcon: (iconName?: string, size?: number) => ReactNode
}

export function NodeCommandMenu({
  definitions,
  graphFamily,
  activeSteps = [],
  actions,
  preferredPosition,
  onClose,
  renderIcon,
}: NodeCommandMenuProps) {
  const containerRef = useRef<HTMLDivElement | null>(null)
  const { activeSection, activeSectionDetail, chrome, insertBindings, plan, sections, setActiveSection } =
    useWorkflowAuthoringSurface({
      definitions,
      graphFamily,
      activeSteps,
      actions,
      preferredPosition,
      onAfterInsert: onClose,
    })

  useEffect(() => {
    const handleKeyDown = (event: KeyboardEvent) => {
      if (event.key === 'Escape') {
        onClose()
      }
    }

    window.addEventListener('keydown', handleKeyDown)
    return () => window.removeEventListener('keydown', handleKeyDown)
  }, [onClose])

  useEffect(() => {
    const handlePointerDown = (event: PointerEvent) => {
      if (!containerRef.current) return
      if (containerRef.current.contains(event.target as Node)) return
      onClose()
    }

    window.addEventListener('pointerdown', handlePointerDown)
    return () => window.removeEventListener('pointerdown', handlePointerDown)
  }, [onClose])

  return (
    <div
      ref={containerRef}
      className="flex max-h-[calc(100vh-1.5rem)] flex-col overflow-hidden rounded-2xl border border-border-default bg-surface shadow-2xl"
      style={{ width: NODE_COMMAND_MENU_WIDTH }}
    >
      <div className="border-b border-border-default px-3 py-2.5">
        <div className="flex items-center justify-between gap-3">
          <div className="min-w-0 flex-1">
            <div className="flex flex-wrap items-center gap-1.5">
              <p className="text-sm font-semibold text-content">{chrome.menuTitle}</p>
              <span className="rounded-full border border-border-default bg-surface-hover px-2 py-0.5">
                {activeSteps.length} on canvas
              </span>
              {plan.referenceBundles.length > 0 && (
                <span className="inline-flex items-center gap-1 rounded-full border border-border-default bg-surface-hover px-2 py-0.5">
                  <Milestone size={11} />
                  {plan.referenceBundles.length} paths
                </span>
              )}
              {plan.moduleBundles.length > 0 && (
                <span className="inline-flex items-center gap-1 rounded-full border border-border-default bg-surface-hover px-2 py-0.5">
                  <Boxes size={11} />
                  {plan.moduleBundles.length} modules
                </span>
              )}
              <span className="rounded-full border border-border-default bg-surface-hover px-2 py-0.5">
                Esc closes
              </span>
            </div>
            <p className="mt-1 text-xs text-content-muted">
              {chrome.menuHelper}
            </p>
          </div>
          <button
            type="button"
            onClick={onClose}
            className="rounded-lg p-1 text-content-muted hover:bg-surface-hover hover:text-content"
            title="Close node picker"
          >
            <X size={16} />
          </button>
        </div>
      </div>

      <div className="flex-1 overflow-y-auto px-3 py-2.5">
        <div className="space-y-2.5">
          <div className="sticky top-0 z-10 -mx-1 rounded-xl bg-surface/95 px-1 pb-2 pt-1 backdrop-blur">
            <div className="mb-2 flex items-center justify-between gap-2 rounded-xl border border-border-default bg-surface-hover/30 px-3 py-2">
              <div className="min-w-0">
                <p className="text-[11px] font-semibold uppercase tracking-wide text-content-secondary">
                  {chrome.guideEyebrow}
                </p>
                <p className="text-xs text-content-muted">
                  {activeSectionDetail?.helper ?? chrome.guideHelper}
                </p>
              </div>
              <span className="shrink-0 rounded-full border border-border-default bg-surface px-2 py-0.5 text-[11px] text-content-muted">
                {activeSectionDetail?.label ?? activeSectionDetail?.tone ?? 'Guided'}
              </span>
            </div>
            <WorkflowAuthoringSectionSelector
              sections={sections}
              activeSection={activeSection}
              onSelectSection={setActiveSection}
              variant="pill"
            />
          </div>

          <WorkflowAuthoringSectionContent
            activeSection={activeSection}
            definitions={definitions}
            graphFamily={graphFamily}
            activeSteps={activeSteps}
            actions={insertBindings}
            renderIcon={renderIcon}
            nodesVariant="menu"
            searchPlaceholder="Search raw nodes"
            autoFocusSearch
          />
        </div>
      </div>
    </div>
  )
}