diff --git a/apps/reader/src/components/Reader.tsx b/apps/reader/src/components/Reader.tsx
index ae5364a0..52536f65 100644
--- a/apps/reader/src/components/Reader.tsx
+++ b/apps/reader/src/components/Reader.tsx
@@ -20,7 +20,6 @@ import { navbarState } from '@flow/reader/state'
 import { db } from '../db'
 import { handleFiles } from '../file'
 import {
-  hasSelection,
   useBackground,
   useColorScheme,
   useDisablePinchZooming,
@@ -28,6 +27,7 @@ import {
   useSync,
   useTranslation,
   useTypography,
+  useTouchEvent,
 } from '../hooks'
 import { BookTab, reader, useReaderSnapshot } from '../models'
 import { isTouchScreen } from '../platform'
@@ -336,49 +336,7 @@ function BookPane({ tab, onMouseDown }: BookPaneProps) {
 
   useEventListener(iframe, 'keydown', handleKeyDown(tab))
 
-  useEventListener(iframe, 'touchstart', (e) => {
-    const x0 = e.targetTouches[0]?.clientX ?? 0
-    const y0 = e.targetTouches[0]?.clientY ?? 0
-    const t0 = Date.now()
-
-    if (!iframe) return
-
-    // When selecting text with long tap, `touchend` is not fired,
-    // so instead of use `addEventlistener`, we should use `on*`
-    // to remove the previous listener.
-    iframe.ontouchend = function handleTouchEnd(e: TouchEvent) {
-      iframe.ontouchend = undefined
-      const selection = iframe.getSelection()
-      if (hasSelection(selection)) return
-
-      const x1 = e.changedTouches[0]?.clientX ?? 0
-      const y1 = e.changedTouches[0]?.clientY ?? 0
-      const t1 = Date.now()
-
-      const deltaX = x1 - x0
-      const deltaY = y1 - y0
-      const deltaT = t1 - t0
-
-      const absX = Math.abs(deltaX)
-      const absY = Math.abs(deltaY)
-
-      if (absX < 10) return
-
-      if (absY / absX > 2) {
-        if (deltaT > 100 || absX < 30) {
-          return
-        }
-      }
-
-      if (deltaX > 0) {
-        tab.prev()
-      }
-
-      if (deltaX < 0) {
-        tab.next()
-      }
-    }
-  })
+  useTouchEvent({iframe, tab});
 
   useDisablePinchZooming(iframe)
 
diff --git a/apps/reader/src/file.ts b/apps/reader/src/file.ts
index f4f73cc7..7117370d 100644
--- a/apps/reader/src/file.ts
+++ b/apps/reader/src/file.ts
@@ -87,7 +87,7 @@ async function toDataUrl(url: string) {
 }
 
 export async function fetchBook(url: string) {
-  const filename = /\/([^/]*\.epub)$/i.exec(url)?.[1] ?? ''
+  const filename = decodeURIComponent(/\/([^/]*\.epub)$/i.exec(url)?.[1] ?? '')
   const books = await db?.books.toArray()
   const book = books?.find((b) => b.name === filename)
 
diff --git a/apps/reader/src/hooks/index.ts b/apps/reader/src/hooks/index.ts
index a55e52ca..e52bf596 100644
--- a/apps/reader/src/hooks/index.ts
+++ b/apps/reader/src/hooks/index.ts
@@ -11,3 +11,4 @@ export * from './useMobile'
 export * from './useTextSelection'
 export * from './useTranslation'
 export * from './useTypography'
+export * from './useTouchEvent'
diff --git a/apps/reader/src/hooks/useTouchEvent.ts b/apps/reader/src/hooks/useTouchEvent.ts
new file mode 100644
index 00000000..098305fd
--- /dev/null
+++ b/apps/reader/src/hooks/useTouchEvent.ts
@@ -0,0 +1,75 @@
+import { useEventListener } from '@literal-ui/hooks'
+import { useCallback, useRef } from 'react'
+
+import { AsRef, BookTab } from '../models/reader'
+
+import { hasSelection } from './useTextSelection'
+
+export function useTouchEvent(props: {
+  iframe?: Window & AsRef
+  tab: BookTab
+}) {
+  const { iframe, tab } = props
+  const params = useRef({ x: -1, y: -1, t: 0, expired: false })
+
+  useEventListener(iframe, 'touchstart', (e) => {
+    const x0 = e.targetTouches[0]?.clientX ?? 0
+    const y0 = e.targetTouches[0]?.clientY ?? 0
+    const t0 = Date.now()
+
+    params.current = { x: x0, y: y0, t: t0, expired: false }
+
+    if (!iframe) return
+
+    // When selecting text with long tap, `touchend` is not fired,
+    // so instead of use `addEventlistener`, we should use `on*`
+    // to remove the previous listener.
+    iframe.ontouchend = handleTouchEnd
+  })
+
+  const handleTouchEnd = useCallback(
+    function (e: TouchEvent) {
+      if (!iframe) return
+      iframe.ontouchend = undefined
+      console.log('params:', params.current)
+      const selection = iframe.getSelection()
+
+      if (hasSelection(selection)) return
+      if (params.current.expired) return
+
+      params.current.expired = true
+
+      const x1 = e.changedTouches[0]?.clientX ?? 0
+      const y1 = e.changedTouches[0]?.clientY ?? 0
+      const t1 = Date.now()
+
+      const { x, y, t } = params.current
+
+      const deltaX = x1 - x
+      const deltaY = y1 - y
+      const deltaT = t1 - t
+
+      const absX = Math.abs(deltaX)
+      const absY = Math.abs(deltaY)
+
+      if (absX < 10) return
+
+      if (absY / absX > 2) {
+        if (deltaT > 100 || absX < 30) {
+          return
+        }
+      }
+
+      if (deltaX > 0) {
+        tab.prev()
+      }
+
+      if (deltaX < 0) {
+        tab.next()
+      }
+    },
+    [tab, iframe],
+  )
+
+  useEventListener(iframe, 'touchend', handleTouchEnd)
+}
diff --git a/apps/reader/src/models/reader.ts b/apps/reader/src/models/reader.ts
index b15c68e3..4380335e 100644
--- a/apps/reader/src/models/reader.ts
+++ b/apps/reader/src/models/reader.ts
@@ -74,7 +74,7 @@ class BaseTab {
 }
 
 // https://github.com/pmndrs/valtio/blob/92f3311f7f1a9fe2a22096cd30f9174b860488ed/src/vanilla.ts#L6
-type AsRef = { $$valtioRef: true }
+export type AsRef = { $$valtioRef: true }
 
 export class BookTab extends BaseTab {
   epub?: Book