type BackendLocal = {
  type: 'local'
  key: string
  path: string
}

type BackendSFTP = {
  type: 'sftp'
  key: string
  path: string
  password?: string
}

type BackendREST = {
  type: 'rest'
  key: string
  path: string
  user?: string
  password?: string
}

type BackendS3 = {
  type: 's3'
  key: string
  path: string
  aws_access_key_id: string
  aws_secret_access_key: string
}

type BackendB2 = {
  type: 'b2'
  key: string
  path: string
  b2_account_id: string
  b2_account_key: string
}

type BackendAzure = {
  type: 'azure'
  key: string
  path: string
  azure_account_name: string
  azure_account_key: string
}

type BackendGS = {
  type: 'gs'
  key: string
  path: string
  google_project_id: string
  google_application_credentials: string
}

export type Backend =
  | BackendAzure
  | BackendB2
  | BackendGS
  | BackendLocal
  | BackendREST
  | BackendS3
  | BackendSFTP

export type Backends = { [name: string]: Backend }

export type Location = {
  from: string
  to: string | string[]
}

export type Locations = { [name: string]: Location }

export type Config = {
  locations: Locations
  backends: Backends
}

export type Flags = { [arg: string]: any }