import { ref } from 'vue'

// Owns the loading/error lifecycle shared by most Pinia stores. `run`
// flips loading on, clears error, runs `fn`, captures any throw into error
// (swallowed so callers can read `store.error`), and always resets loading.
// Returns fn's resolved value on success, or undefined if it threw.
//
// `errorAs` matches each store's existing convention so migrations don't
// change what `store.error` holds: 'raw' keeps the thrown object (the
// ApiError, with .status/.body), 'message' keeps just the string.
export function useAsyncAction({ errorAs = 'raw' } = {}) {
  const loading = ref(false)
  const error = ref(null)

  async function run(fn) {
    loading.value = true
    error.value = null
    try {
      return await fn()
    } catch (e) {
      error.value = errorAs === 'message' ? (e?.message ?? String(e)) : e
    } finally {
      loading.value = false
    }
  }

  return { loading, error, run }
}