import type { GiteaComment } from '../../gitea/api'
import type { KanbanWebviewPanel } from '../KanbanPanel'
import { listIssueComments, postIssueComment } from '../../gitea/api'
import { systemCommentText } from '../../gitea/issueComment'
import { logger } from '../../logging/logger'
import { resolveRepoCtx, toast } from './handoffFlow'

export interface IssueChatComment {
  id: number
  author: string
  authorName?: string
  avatarUrl?: string
  createdAt: string
  body: string
  systemText?: string
}

function toChat(comment: GiteaComment): IssueChatComment {
  const systemText = systemCommentText(comment.body)
  return {
    id: comment.id,
    author: comment.user?.login ?? '未知',
    authorName: comment.user?.full_name || undefined,
    avatarUrl: comment.user?.avatar_url || undefined,
    createdAt: comment.created_at,
    body: comment.body,
    ...(systemText ? { systemText } : {}),
  }
}

async function pushComments(panel: KanbanWebviewPanel, issueNumber: number): Promise<void> {
  const ctx = await resolveRepoCtx(panel)
  if (!ctx)
    return
  const comments = await listIssueComments({
    host: ctx.host,
    token: ctx.token,
    owner: ctx.owner,
    repo: ctx.repo,
    index: issueNumber,
  })
  panel.postMessage({
    type: 'issue/comments-result',
    issueNumber,
    comments: comments.map(toChat),
  })
}

export async function handleIssueComments(panel: KanbanWebviewPanel, issueNumber: number): Promise<void> {
  try {
    await pushComments(panel, issueNumber)
  }
  catch (err) {
    const message = err instanceof Error ? err.message : String(err)
    logger.add({ level: 'error', source: 'panel', message: `读取工单 #${issueNumber} 评论失败`, details: message })
    panel.postMessage({ type: 'issue/comments-result', issueNumber, comments: [], error: message })
  }
}

export async function handleIssueCommentPost(panel: KanbanWebviewPanel, issueNumber: number, body: string): Promise<void> {
  const text = body.trim()
  if (!text)
    return
  const ctx = await resolveRepoCtx(panel)
  if (!ctx)
    return
  try {
    await postIssueComment({
      host: ctx.host,
      token: ctx.token,
      owner: ctx.owner,
      repo: ctx.repo,
      index: issueNumber,
      body: text,
    })
    await pushComments(panel, issueNumber)
  }
  catch (err) {
    const message = err instanceof Error ? err.message : String(err)
    logger.add({ level: 'error', source: 'panel', message: `发表工单 #${issueNumber} 评论失败`, details: message })
    toast(panel, 'error', `评论没发出去：${message}`)
  }
}