import type { Dispatch, SetStateAction } from 'react'
import type { AiAgentMessage } from './aiAgentConversation'
import type { AppLocale } from './i18n'

export interface ToolInvocation {
  tool: string
  input?: string
}

export function updateMessage(
  setMessages: Dispatch<SetStateAction<AiAgentMessage[]>>,
  messageId: string,
  updater: (message: AiAgentMessage) => AiAgentMessage,
): void {
  setMessages((current) => current.map((message) => (message.id === messageId ? updater(message) : message)))
}

export function markReasoningDone(
  setMessages: Dispatch<SetStateAction<AiAgentMessage[]>>,
  messageId: string,
): void {
  updateMessage(setMessages, messageId, (message) => (
    message.reasoningDone ? message : { ...message, reasoningDone: true }
  ))
}

type ToolActionStatus = 'pending' | 'done' | 'error'

function parsedToolInput(input?: string): Record<string, unknown> {
  if (!input) return {}
  try {
    const parsed: unknown = JSON.parse(input)
    return typeof parsed === 'object' && parsed !== null && !Array.isArray(parsed)
      ? parsed as Record<string, unknown>
      : {}
  } catch {
    return {}
  }
}

function toolDetail(input?: string): string | undefined {
  const parsed = parsedToolInput(input)
  for (const key of ['purpose', 'query', 'url', 'path', 'file_path']) {
    const value = parsed[key]
    if (typeof value === 'string' && value.trim()) return value.trim()
  }
  return undefined
}

function chineseToolVerb(toolName: string, status: ToolActionStatus): string {
  const verbs: Record<string, [string, string, string]> = {
    magic_brush: ['正在执行', '已完成', '执行失败'],
    search_web: ['正在联网搜索', '已联网搜索', '联网搜索失败'],
    read_web_page: ['正在浏览网页', '已浏览网页', '网页浏览失败'],
    read_guanghu_url: ['正在读取光湖页面', '已读取光湖页面', '光湖页面读取失败'],
    search_notes: ['正在搜索知识库', '已搜索知识库', '知识库搜索失败'],
    get_vault_context: ['正在了解知识库', '已读取知识库概况', '知识库概况读取失败'],
    get_note: ['正在读取页面', '已读取页面', '页面读取失败'],
    open_note: ['正在打开页面', '已打开页面', '页面打开失败'],
    create_note: ['正在新建页面', '已新建页面', '页面新建失败'],
    edit_note: ['正在写入页面', '已写入页面', '页面写入失败'],
    delete_note: ['正在删除页面', '已删除页面', '页面删除失败'],
    get_fifth_domain_wake_route: ['正在读取第五域路径', '已读取第五域路径', '第五域路径读取失败'],
    get_current_time: ['正在校准当前时间', '已校准当前时间', '当前时间校准失败'],
    Bash: ['正在运行命令', '已运行命令', '命令运行失败'],
    Write: ['正在写入文件', '已写入文件', '文件写入失败'],
    Edit: ['正在编辑文件', '已编辑文件', '文件编辑失败'],
    Read: ['正在读取文件', '已读取文件', '文件读取失败'],
    Glob: ['正在查找文件', '已查找文件', '文件查找失败'],
    Grep: ['正在搜索内容', '已搜索内容', '内容搜索失败'],
  }
  const index = status === 'pending' ? 0 : status === 'done' ? 1 : 2
  return verbs[toolName]?.[index] ?? (status === 'pending' ? `正在调用 ${toolName}` : status === 'done' ? `已调用 ${toolName}` : `${toolName} 调用失败`)
}

export function formatToolLabel(
  toolName: string,
  input?: string,
  locale: AppLocale = 'en',
  status: ToolActionStatus = 'pending',
): string {
  if (locale.startsWith('zh')) {
    const detail = toolDetail(input)
    const verb = chineseToolVerb(toolName, status)
    return detail ? `${verb}：${detail}` : verb
  }
  if (toolName === 'Bash') {
    return 'Ran shell command'
  }
  if (toolName === 'Write') return 'Wrote file'
  if (toolName === 'Edit') return 'Edited file'
  return toolName
}

export function updateToolAction(
  message: AiAgentMessage,
  toolName: string,
  toolId: string,
  input?: string,
  locale: AppLocale = 'en',
): AiAgentMessage {
  const existing = message.actions.find((action) => action.toolId === toolId)
  if (existing) {
    return {
      ...message,
      actions: message.actions.map((action) => (
        action.toolId === toolId
          ? {
              ...action,
              input: input ?? action.input,
              label: formatToolLabel(toolName, input ?? action.input, locale),
            }
          : action
      )),
    }
  }

  return {
    ...message,
    actions: [
      ...message.actions,
      {
        tool: toolName,
        toolId,
        label: formatToolLabel(toolName, input, locale),
        status: 'pending' as const,
        input,
      },
    ],
  }
}