/**
 * InlineArtifactCard - Claude-style inline artifact preview card
 * 
 * Displays a collapsed preview of an artifact within the chat message flow.
 * Clicking "Preview contents" opens the artifact in the split view/side panel.
 */

import type { Artifact } from '@janhq/core'
import { useArtifacts } from '@/hooks/useArtifacts'
import { useState } from 'react'
import { cn } from '@/lib/utils'

type InlineArtifactCardProps = {
  artifact: Artifact & { content: string } // Artifact with loaded content
  threadId: string
  isCreating?: boolean
}

export function InlineArtifactCard({ artifact, threadId, isCreating }: InlineArtifactCardProps) {
  const artifacts = useArtifacts()
  const [isExpanded, setIsExpanded] = useState(false)

  const handlePreviewClick = () => {
    // Open split view and set this as active artifact
    artifacts.setActiveArtifact(threadId, artifact.id)
    if (!artifacts.splitViewOpen[threadId]) {
      artifacts.toggleSplitView(threadId)
    }
  }

  const handleDownload = () => {
    // Create blob and download
    const blob = new Blob([artifact.content], { type: 'text/plain' })
    const url = URL.createObjectURL(blob)
    const a = document.createElement('a')
    a.href = url
    a.download = artifact.file_path.split('/').pop() || 'artifact.txt'
    document.body.appendChild(a)
    a.click()
    document.body.removeChild(a)
    URL.revokeObjectURL(url)
  }

  const getFileExtension = () => {
    const ext = artifact.file_path.split('.').pop()
    return ext?.toUpperCase() || 'TXT'
  }

  const getArtifactType = () => {
    if (artifact.content_type.startsWith('text/x-')) {
      return 'Code'
    }
    if (artifact.content_type === 'text/markdown') {
      return 'Document'
    }
    return 'File'
  }

  const getContentPreview = () => {
    // First ~200 chars for preview
    const preview = artifact.content.substring(0, 200)
    return preview.length < artifact.content.length ? preview + '...' : preview
  }

  return (
    <div className="my-3 border border-main-view-fg/10 rounded-lg overflow-hidden bg-main-view-fg/5">
      {/* Header */}
      <button
        onClick={handlePreviewClick}
        disabled={isCreating}
        className={cn(
          "w-full flex items-center gap-3 p-3 text-left transition-colors",
          "hover:bg-main-view-fg/10",
          isCreating && "opacity-60 cursor-not-allowed"
        )}
      >
        <div className="flex-shrink-0">
          <svg
            width="20"
            height="20"
            viewBox="0 0 20 20"
            fill="none"
            className="text-main-view-fg/60"
          >
            <path
              d="M6 2C5.44772 2 5 2.44772 5 3V17C5 17.5523 5.44772 18 6 18H14C14.5523 18 15 17.5523 15 17V6.41421C15 6.149 14.8946 5.89464 14.7071 5.70711L11.2929 2.29289C11.1054 2.10536 10.851 2 10.5858 2H6Z"
              stroke="currentColor"
              strokeWidth="1.5"
              fill="none"
            />
            <path d="M11 2V5C11 5.55228 11.4477 6 12 6H15" stroke="currentColor" strokeWidth="1.5" fill="none" />
          </svg>
        </div>
        <div className="flex-1 min-w-0">
          <div className="text-sm font-medium text-main-view-fg">
            {isCreating ? 'Creating' : artifact.name}
          </div>
          <div className="text-xs text-main-view-fg/60 mt-0.5">
            {getArtifactType()} · {getFileExtension()}
          </div>
        </div>
        {isCreating && (
          <div className="flex-shrink-0">
            <svg
              className="animate-spin h-4 w-4 text-main-view-fg/60"
              xmlns="http://www.w3.org/2000/svg"
              fill="none"
              viewBox="0 0 24 24"
            >
              <circle
                className="opacity-25"
                cx="12"
                cy="12"
                r="10"
                stroke="currentColor"
                strokeWidth="4"
              />
              <path
                className="opacity-75"
                fill="currentColor"
                d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
              />
            </svg>
          </div>
        )}
      </button>

      {/* Collapsible Preview */}
      {isExpanded && !isCreating && (
        <div className="border-t border-main-view-fg/10 p-4 bg-main-view-fg/5">
          <pre className="text-xs text-main-view-fg/70 whitespace-pre-wrap font-mono overflow-auto max-h-40">
            {getContentPreview()}
          </pre>
        </div>
      )}

      {/* Footer Actions */}
      <div className="border-t border-main-view-fg/10 p-3 flex items-center justify-between bg-main-view-fg/5">
        <button
          onClick={() => setIsExpanded(!isExpanded)}
          disabled={isCreating}
          className="text-xs text-main-view-fg/60 hover:text-main-view-fg transition-colors disabled:opacity-50"
        >
          {isExpanded ? 'Hide preview' : 'Show preview'}
        </button>
        <div className="flex items-center gap-2">
          <button
            onClick={handleDownload}
            disabled={isCreating}
            className="px-2 py-1 text-xs font-medium rounded-md hover:bg-main-view-fg/10 transition-colors disabled:opacity-50"
          >
            Download
          </button>
          <button
            onClick={handlePreviewClick}
            disabled={isCreating}
            className="px-3 py-1.5 text-xs font-medium rounded-md bg-main-view-fg/10 hover:bg-main-view-fg/20 transition-colors disabled:opacity-50"
          >
            {isCreating ? 'Creating...' : 'Preview contents'}
          </button>
        </div>
      </div>
    </div>
  )
}