/**
 * Defines which type of content a Step returns.
 * Add an entry here when you define a step
 */
export type StepReturnTypes = {
  FILE_OR_URL_IMPORT: string // String content of the file/url
  TARGET_MY_COLLECTION: number // folderPath
}

/**
 * Defines what the data structure of a step
 */
export type Step<T extends keyof StepReturnTypes> = {
  name: T
  caption?: string
}

/**
 * The return output value of an individual step
 */
export type StepReturnType<T> = T extends Step<infer U>
  ? StepReturnTypes[U]
  : never

/**
 * Defines the value of the output list generated by a step
 */
export type StepsOutputList<T> = {
  [K in keyof T]: StepReturnType<T[K]>
}

/** Use this function to define a step */
export const step = <T extends keyof StepReturnTypes>(
  stepName: T,
  caption?: string
) =>
  <Step<T>>{
    name: stepName,
    caption,
  }