Extract reader pages context default values

src/modules/reader/constants/ReaderContext.constants.ts

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) Contributors to the Suwayomi project
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+import { ReaderStatePages } from '@/modules/reader/types/ReaderProgressBar.types.ts';
+import { ReaderTransitionPageMode } from '@/modules/reader/types/Reader.types.ts';
+import { createPageData } from '@/modules/reader/utils/ReaderPager.utils.tsx';
+
+export const READER_STATE_PAGES_DEFAULTS: ReaderStatePages = {
+    totalPages: 0,
+    setTotalPages: () => undefined,
+    currentPageIndex: 0,
+    setCurrentPageIndex: () => undefined,
+    pageToScrollToIndex: null,
+    setPageToScrollToIndex: () => undefined,
+    pageUrls: [],
+    setPageUrls: () => undefined,
+    pageLoadStates: [{ url: '', loaded: false }],
+    setPageLoadStates: () => undefined,
+    pages: [createPageData('', 0)],
+    setPages: () => undefined,
+    transitionPageMode: ReaderTransitionPageMode.NONE,
+    setTransitionPageMode: () => undefined,
+    retryFailedPagesKeyPrefix: '',
+    setRetryFailedPagesKeyPrefix: () => undefined,
+};