import apiService from './api.service'
import { store } from '@/store'
import { MigrateLogEntry, SetupStatusDto } from '@/proxy/setup/models'

export const getSetupStatus = () =>
  apiService.fetchData<SetupStatusDto>({
    method: 'GET',
    url: '/api/setup/application-status',
  })

export const getMigrateUrl = (): string => {
  const base = import.meta.env.VITE_API_URL ?? ''
  return `${base}/api/setup/migrate`
}

export const streamSetupMigrate = async (
  onLog: (entry: MigrateLogEntry) => void,
  onDone: () => void,
  onError: (err: unknown) => void,
): Promise<void> => {
  const token = store.getState().auth.session.token
  const url = getMigrateUrl()
  try {
    const response = await fetch(url, {
      method: 'POST',
      headers: {
        ...(token ? { Authorization: `Bearer ${token}` } : {}),
        Accept: 'text/event-stream',
      },
    })
    if (!response.ok) {
      onError(new Error(`HTTP ${response.status}`))
      return
    }
    const reader = response.body?.getReader()
    if (!reader) {
      onError(new Error('No response body'))
      return
    }
    const decoder = new TextDecoder()
    let buffer = ''
    while (true) {
      const { done, value } = await reader.read()
      if (done) break
      buffer += decoder.decode(value, { stream: true })
      const lines = buffer.split('\n')
      buffer = lines.pop() ?? ''
      for (const line of lines) {
        if (line.startsWith('data: ')) {
          try {
            const data = JSON.parse(line.slice(6)) as MigrateLogEntry
            onLog(data)
          } catch { /* parse hatası, atla */ }
        }
      }
    }
    onDone()
  } catch (err) {
    onError(err)
  }
}