'use client'
import React, { useCallback, useState } from 'react'
import { RiDeleteBinLine, RiSendPlane2Line, RiUser3Line } from '@remixicon/react'
import useSWR from 'swr'
import { Mention, MentionsInput } from 'react-mentions'
import classNames from '@/utils/classnames'
import { formatDistanceToNow } from '@/utils/time'
import { useToastContext } from '@/app/components/base/toast'
import { del, get, post } from '@/service/base'
import styles from './segment-comments.module.css'

type SegmentCommentsProps = {
  datasetId: string
  segmentId: string
}

type Comment = {
  id: string
  content: string
  account_id: string
  account_name: string
  account_avatar: string
  mentioned_account_ids: string[]
  created_at: string
}

const SegmentComments: React.FC<SegmentCommentsProps> = ({
  datasetId,
  segmentId,
}) => {
  const { notify } = useToastContext()
  const [content, setContent] = useState('')
  const [mentionedIds, setMentionedIds] = useState<string[]>([])
  const [isSubmitting, setIsSubmitting] = useState(false)

  // 获取团队成员列表（用于@提及）
  const { data: membersData } = useSWR('/workspaces/current/members', get)
  const members = membersData?.accounts || []

  // 获取评论列表
  const { data: commentsData, mutate } = useSWR(
    `/datasets/${datasetId}/segments/${segmentId}/comments`,
    get,
  )

  const comments: Comment[] = commentsData?.comments || []

  // 提交评论
  const handleSubmit = useCallback(async () => {
    if (!content.trim() || isSubmitting)
      return

    setIsSubmitting(true)

    // 调试日志
    console.log('Submitting comment with mentioned_account_ids:', mentionedIds)
    console.log('Comment content:', content)

    try {
      await post(`/datasets/${datasetId}/segments/${segmentId}/comments`, {
        body: {
          content: content.trim(),
          mentioned_account_ids: mentionedIds,
        },
      })

      setContent('')
      setMentionedIds([])
      mutate() // 刷新评论列表

      notify({
        type: 'success',
        message: '评论发送成功',
      })
    }
    catch {
      notify({
        type: 'error',
        message: '评论发送失败',
      })
    }
    finally {
      setIsSubmitting(false)
    }
  }, [content, datasetId, segmentId, mentionedIds, mutate, notify, isSubmitting])

  // 删除评论
  const handleDelete = useCallback(async (commentId: string) => {
    try {
      await del(`/datasets/${datasetId}/segments/${segmentId}/comments/${commentId}`)

      mutate() // 刷新评论列表

      notify({
        type: 'success',
        message: '删除成功',
      })
    }
    catch {
      notify({
        type: 'error',
        message: '删除失败',
      })
    }
  }, [datasetId, segmentId, mutate, notify])

  // 处理@提及
  const handleMentionChange = useCallback((event: any, newValue: string, newPlainTextValue: string, mentions: any[]) => {
    console.log('Mention change - mentions:', mentions)
    console.log('Mention change - newValue:', newValue)
    setContent(newValue)
    setMentionedIds(mentions.map(m => m.id))
  }, [])

  return (
    <div className="border-t border-divider-subtle bg-background-section-burn">
      <div className="px-4 py-3">
        <div className="system-md-semibold mb-3 text-text-primary">
          评论 ({comments.length})
        </div>

        {/* 评论输入框 */}
        <div className="border-components-input-border mb-4 rounded-lg border bg-components-input-bg-normal">
          <div className={styles.mentionsWrapper}>
            <MentionsInput
              value={content}
              onChange={handleMentionChange}
              placeholder="添加评论... 使用 @ 提及团队成员"
            >
              <Mention
                trigger="@"
                data={members.map((m: any) => ({
                  id: m.id,
                  display: m.name,
                }))}
                markup="@[__display__](__id__)"
                displayTransform={(_id, display) => `@${display}`}
              />
            </MentionsInput>
          </div>

          <div className="flex items-center justify-between border-t border-divider-subtle px-3 py-2">
            <div className="system-xs-regular text-text-tertiary">
              使用 @ 提及团队成员
            </div>
            <button
              onClick={handleSubmit}
              disabled={!content.trim() || isSubmitting}
              className={classNames(
                'flex items-center gap-1 rounded-lg px-3 py-1.5 text-sm font-medium transition-colors',
                content.trim() && !isSubmitting
                  ? 'bg-util-colors-blue-blue-600 text-white hover:bg-util-colors-blue-blue-700'
                  : 'cursor-not-allowed bg-components-button-tertiary-bg text-components-button-tertiary-text',
              )}
            >
              <RiSendPlane2Line className="h-4 w-4" />
              {isSubmitting ? '发送中...' : '发送'}
            </button>
          </div>
        </div>

        {/* 评论列表 */}
        <div className="space-y-3">
          {comments.length === 0
            ? (
              <div className="py-8 text-center">
                <p className="system-sm-regular text-text-quaternary">
                  暂无评论，快来发表第一条评论吧！
                </p>
              </div>
            )
            : (
              comments.map(comment => (
                <div
                  key={comment.id}
                  className="rounded-lg border border-components-panel-border bg-components-panel-bg p-3"
                >
                  <div className="mb-2 flex items-start justify-between">
                    <div className="flex items-center gap-2">
                      {/* 头像 */}
                      {comment.account_avatar
                        ? (
                          <img
                            src={comment.account_avatar}
                            alt={comment.account_name}
                            className="h-6 w-6 rounded-full"
                          />
                        )
                        : (
                          <div className="flex h-6 w-6 items-center justify-center rounded-full bg-util-colors-blue-blue-100">
                            <RiUser3Line className="h-3.5 w-3.5 text-util-colors-blue-blue-600" />
                          </div>
                        )}

                      {/* 名称和时间 */}
                      <div>
                        <div className="system-sm-semibold text-text-primary">
                          {comment.account_name}
                        </div>
                        <div className="system-xs-regular text-text-quaternary">
                          {formatDistanceToNow(new Date(comment.created_at))}
                        </div>
                      </div>
                    </div>

                    {/* 删除按钮 */}
                    <button
                      onClick={() => handleDelete(comment.id)}
                      className="flex h-6 w-6 items-center justify-center rounded hover:bg-state-destructive-hover"
                      title="删除"
                    >
                      <RiDeleteBinLine className="h-3.5 w-3.5 text-text-tertiary hover:text-text-destructive" />
                    </button>
                  </div>

                  {/* 评论内容 */}
                  <div className="system-sm-regular whitespace-pre-wrap break-words text-text-secondary">
                    {comment.content}
                  </div>
                </div>
              ))
            )}
        </div>
      </div>
    </div>
  )
}

export default SegmentComments