1 files changed, 0 insertions, 211 deletions
diff --git a/app/javascript/mastodon/storage/modifier.js b/app/javascript/mastodon/storage/modifier.js
deleted file mode 100644
index 9fadabef4..000000000
--- a/app/javascript/mastodon/storage/modifier.js
+++ /dev/null
@@ -1,211 +0,0 @@
-import openDB from './db';
-
-const accountAssetKeys = ['avatar', 'avatar_static', 'header', 'header_static'];
-const storageMargin = 8388608;
-const storeLimit = 1024;
-
-// navigator.storage is not present on:
-// Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.100 Safari/537.36 Edge/16.16299
-// estimate method is not present on Chrome 57.0.2987.98 on Linux.
-export const storageFreeable = 'storage' in navigator && 'estimate' in navigator.storage;
-
-function openCache() {
-  // ServiceWorker and Cache API is not available on iOS 11
-  // https://webkit.org/status/#specification-service-workers
-  return self.caches ? caches.open('mastodon-system') : Promise.reject();
-}
-
-function printErrorIfAvailable(error) {
-  if (error) {
-    console.warn(error);
-  }
-}
-
-function put(name, objects, onupdate, oncreate) {
-  return openDB().then(db => (new Promise((resolve, reject) => {
-    const putTransaction = db.transaction(name, 'readwrite');
-    const putStore = putTransaction.objectStore(name);
-    const putIndex = putStore.index('id');
-
-    objects.forEach(object => {
-      putIndex.getKey(object.id).onsuccess = retrieval => {
-        function addObject() {
-          putStore.add(object);
-        }
-
-        function deleteObject() {
-          putStore.delete(retrieval.target.result).onsuccess = addObject;
-        }
-
-        if (retrieval.target.result) {
-          if (onupdate) {
-            onupdate(object, retrieval.target.result, putStore, deleteObject);
-          } else {
-            deleteObject();
-          }
-        } else {
-          if (oncreate) {
-            oncreate(object, addObject);
-          } else {
-            addObject();
-          }
-        }
-      };
-    });
-
-    putTransaction.oncomplete = () => {
-      const readTransaction = db.transaction(name, 'readonly');
-      const readStore = readTransaction.objectStore(name);
-      const count = readStore.count();
-
-      count.onsuccess = () => {
-        const excess = count.result - storeLimit;
-
-        if (excess > 0) {
-          const retrieval = readStore.getAll(null, excess);
-
-          retrieval.onsuccess = () => resolve(retrieval.result);
-          retrieval.onerror = reject;
-        } else {
-          resolve([]);
-        }
-      };
-
-      count.onerror = reject;
-    };
-
-    putTransaction.onerror = reject;
-  })).then(resolved => {
-    db.close();
-    return resolved;
-  }, error => {
-    db.close();
-    throw error;
-  }));
-}
-
-function evictAccountsByRecords(records) {
-  return openDB().then(db => {
-    const transaction = db.transaction(['accounts', 'statuses'], 'readwrite');
-    const accounts = transaction.objectStore('accounts');
-    const accountsIdIndex = accounts.index('id');
-    const accountsMovedIndex = accounts.index('moved');
-    const statuses = transaction.objectStore('statuses');
-    const statusesIndex = statuses.index('account');
-
-    function evict(toEvict) {
-      toEvict.forEach(record => {
-        openCache()
-          .then(cache => accountAssetKeys.forEach(key => cache.delete(records[key])))
-          .catch(printErrorIfAvailable);
-
-        accountsMovedIndex.getAll(record.id).onsuccess = ({ target }) => evict(target.result);
-
-        statusesIndex.getAll(record.id).onsuccess =
-          ({ target }) => evictStatusesByRecords(target.result);
-
-        accountsIdIndex.getKey(record.id).onsuccess =
-          ({ target }) => target.result && accounts.delete(target.result);
-      });
-    }
-
-    evict(records);
-
-    db.close();
-  }).catch(printErrorIfAvailable);
-}
-
-export function evictStatus(id) {
-  evictStatuses([id]);
-}
-
-export function evictStatuses(ids) {
-  return openDB().then(db => {
-    const transaction = db.transaction('statuses', 'readwrite');
-    const store = transaction.objectStore('statuses');
-    const idIndex = store.index('id');
-    const reblogIndex = store.index('reblog');
-
-    ids.forEach(id => {
-      reblogIndex.getAllKeys(id).onsuccess =
-        ({ target }) => target.result.forEach(reblogKey => store.delete(reblogKey));
-
-      idIndex.getKey(id).onsuccess =
-        ({ target }) => target.result && store.delete(target.result);
-    });
-
-    db.close();
-  }).catch(printErrorIfAvailable);
-}
-
-function evictStatusesByRecords(records) {
-  return evictStatuses(records.map(({ id }) => id));
-}
-
-export function putAccounts(records, avatarStatic) {
-  const avatarKey = avatarStatic ? 'avatar_static' : 'avatar';
-  const newURLs = [];
-
-  put('accounts', records, (newRecord, oldKey, store, oncomplete) => {
-    store.get(oldKey).onsuccess = ({ target }) => {
-      accountAssetKeys.forEach(key => {
-        const newURL = newRecord[key];
-        const oldURL = target.result[key];
-
-        if (newURL !== oldURL) {
-          openCache()
-            .then(cache => cache.delete(oldURL))
-            .catch(printErrorIfAvailable);
-        }
-      });
-
-      const newURL = newRecord[avatarKey];
-      const oldURL = target.result[avatarKey];
-
-      if (newURL !== oldURL) {
-        newURLs.push(newURL);
-      }
-
-      oncomplete();
-    };
-  }, (newRecord, oncomplete) => {
-    newURLs.push(newRecord[avatarKey]);
-    oncomplete();
-  }).then(records => Promise.all([
-    evictAccountsByRecords(records),
-    openCache().then(cache => cache.addAll(newURLs)),
-  ])).then(freeStorage, error => {
-    freeStorage();
-    throw error;
-  }).catch(printErrorIfAvailable);
-}
-
-export function putStatuses(records) {
-  put('statuses', records)
-    .then(evictStatusesByRecords)
-    .catch(printErrorIfAvailable);
-}
-
-export function freeStorage() {
-  return storageFreeable && navigator.storage.estimate().then(({ quota, usage }) => {
-    if (usage + storageMargin < quota) {
-      return null;
-    }
-
-    return openDB().then(db => new Promise((resolve, reject) => {
-      const retrieval = db.transaction('accounts', 'readonly').objectStore('accounts').getAll(null, 1);
-
-      retrieval.onsuccess = () => {
-        if (retrieval.result.length > 0) {
-          resolve(evictAccountsByRecords(retrieval.result).then(freeStorage));
-        } else {
-          resolve(caches.delete('mastodon-system'));
-        }
-      };
-
-      retrieval.onerror = reject;
-
-      db.close();
-    }));
-  });
-}