import { WebClient } from '@slack/web-api'

export default defineEventHandler(async (event) => {
  const config = useRuntimeConfig()
  
  if (!config.slackBotToken) {
    return {
      success: false,
      error: 'Slack bot token not configured'
    }
  }

  const client = new WebClient(config.slackBotToken)

  try {
    // Test basic API access
    const authTest = await client.auth.test()
    console.log('Auth test result:', authTest)

    // Test if admin API is available
    let adminApiAvailable = false
    let adminError = null
    
    try {
      // Try to call admin.users.list to test admin API access
      await client.admin.users.list({ limit: 1 })
      adminApiAvailable = true
    } catch (error: any) {
      adminError = error.data?.error || error.message
      console.log('Admin API test failed:', adminError)
    }

    // Test channel access if channel ID is configured
    let channelAccess = false
    let channelError = null
    
    if (config.slackVettingChannelId) {
      try {
        const channelInfo = await client.conversations.info({
          channel: config.slackVettingChannelId
        })
        channelAccess = !!channelInfo.channel
      } catch (error: any) {
        channelError = error.data?.error || error.message
      }
    }

    return {
      success: true,
      botInfo: {
        user: authTest.user,
        team: authTest.team,
        url: authTest.url
      },
      adminApiAvailable,
      adminError: adminApiAvailable ? null : adminError,
      channelAccess,
      channelError: channelAccess ? null : channelError,
      channelId: config.slackVettingChannelId || 'Not configured'
    }

  } catch (error: any) {
    return {
      success: false,
      error: error.data?.error || error.message || 'Unknown error'
    }
  }
})