drop sketch of useOptimisticUpdates

app/composables/useOptimisticUpdates.js

@@ -1,81 +0,0 @@
-export default function useOptimisticUpdates(action) {
-  // old (to pass to other hooks)
-  //   update: character, list, options
-  //   delete: character, list, options
-  //   create: list, options
-
-  // temp (update until settled)
-  //   create: character, list
-
-  // new (to update)
-  //   update: character, list, options
-  //   delete: list, options
-  //   create: options
-
-  // error (to rollback)
-  //   update: character, list, options
-  //   delete: character, list, options
-  //   create: list, options
-
-  // success (to re-update with correct id)
-  //   create: character, list
-
-  // onMutate
-  //   getOld
-  //   create new
-  //   update caches
-  //   cancel queries
-  //   return old and new for hooks
-
-  // onSettled
-  //   invalidate list, options queries
-  //   if newCharacter || delete: invalidate character query
-
-  // onError
-  //   if newList: rollback list, options
-  //   if newCharacter: rollback character
-
-  // onSuccess
-  //   if create: reupdate list
-
-  function getOld(id = null) {
-    // save current for rollback
-    const oldList = queryCache.getQueryData(characterListQuery.key)
-    const oldOptions = queryCache.getQueryData(characterOptionsQuery.key)
-
-    if (id) {
-      const index = _findIndex(oldList, { id })
-
-      if (index >= 0) {
-        const oldCharacter = oldList[index]
-
-        return { oldCharacter, oldList, oldOptions }
-      } else {
-        return { oldList, oldOptions }
-      }
-  }
-
-
-
-  function onSettled({ newCharacter }) {
-    if (newCharacter) {
-      queryCache.invalidateQueries({ key: characterListQuery.key })
-      queryCache.invalidateQueries({ key: characterByIdQuery(id).key })
-    }
-  }
-
-  function onError({ oldCharacter, oldCharacterList, oldOptions, newCharacterList }) {
-    // before applying the rollback, check if the values in the cache are the same
-    //    in case the cache was updated by another mutation or query
-    if (newCharacterList === queryCache.getQueryData(characterListQuery.key)) {
-      queryCache.setQueryData(characterListQuery.key, oldCharacterList)
-      queryCache.setQueryData(characterOptionsQuery.key, oldOptions)
-      queryCache.setQueryData(characterByIdQuery(id).key, oldCharacter)
-    }
-  }
-
-  function onSuccess() {
-    // only create
-
-  }
-}