Move to expo and react-navigation (#288)

* WIP - adding expo

* WIP - adding expo 2

* Fix tsc

* Finish adding expo

* Disable the 'require cycle' warning

* Tweak plist

* Modify some dependency versions to make expo happy

* Fix icon fill

* Get Web compiling for expo

* 1.7

* Switch to react-navigation in expo2 (#287)

* WIP Switch to react-navigation

* WIP Switch to react-navigation 2

* WIP Switch to react-navigation 3

* Convert all screens to react navigation

* Update BottomBar for react navigation

* Update mobile menu to be react-native drawer

* Fixes to drawer and bottombar

* Factor out some helpers

* Replace the navigation model with react-navigation

* Restructure the shell folder and fix the header positioning

* Restore the error boundary

* Fix tsc

* Implement not-found page

* Remove react-native-gesture-handler (no longer used)

* Handle notifee card presses

* Handle all navigations from the state layer

* Fix drawer behaviors

* Fix two linking issues

* Switch to our react-native-progress fork to fix an svg rendering issue

* Get Web working with react-navigation

* Refactor routes and navigation for a bit more clarity

* Remove dead code

* Rework Web shell to left/right nav to make this easier

* Fix ViewHeader for desktop web

* Hide profileheader back btn on desktop web

* Move the compose button to the left nav

* Implement reply prompt in threads for desktop web

* Composer refactors

* Factor out all platform-specific text input behaviors from the composer

* Small fix

* Update the web build to use tiptap for the composer

* Tune up the mention autocomplete dropdown

* Simplify the default avatar and banner

* Fixes to link cards in web composer

* Fix dropdowns on web

* Tweak load latest on desktop

* Add web beta message and feedback link

* Fix up links in desktop web

1 files changed, 77 insertions, 0 deletions

diff --git a/src/lib/routes/helpers.ts b/src/lib/routes/helpers.ts
new file mode 100644
index 000000000..be76b9669
--- /dev/null
+++ b/src/lib/routes/helpers.ts
@@ -0,0 +1,77 @@
+import {State, RouteParams} from './types'
+
+export function getCurrentRoute(state: State) {
+  let node = state.routes[state.index || 0]
+  while (node.state?.routes && typeof node.state?.index === 'number') {
+    node = node.state?.routes[node.state?.index]
+  }
+  return node
+}
+
+export function isStateAtTabRoot(state: State | undefined) {
+  if (!state) {
+    // NOTE
+    // if state is not defined it's because init is occuring
+    // and therefore we can safely assume we're at root
+    // -prf
+    return true
+  }
+  const currentRoute = getCurrentRoute(state)
+  return (
+    isTab(currentRoute.name, 'Home') ||
+    isTab(currentRoute.name, 'Search') ||
+    isTab(currentRoute.name, 'Notifications')
+  )
+}
+
+export function isTab(current: string, route: string) {
+  // NOTE
+  // our tab routes can be variously referenced by 3 different names
+  // this helper deals with that weirdness
+  // -prf
+  return (
+    current === route ||
+    current === `${route}Tab` ||
+    current === `${route}Inner`
+  )
+}
+
+export enum TabState {
+  InsideAtRoot,
+  Inside,
+  Outside,
+}
+export function getTabState(state: State | undefined, tab: string): TabState {
+  if (!state) {
+    return TabState.Outside
+  }
+  const currentRoute = getCurrentRoute(state)
+  if (isTab(currentRoute.name, tab)) {
+    return TabState.InsideAtRoot
+  } else if (isTab(state.routes[state.index || 0].name, tab)) {
+    return TabState.Inside
+  }
+  return TabState.Outside
+}
+
+export function buildStateObject(
+  stack: string,
+  route: string,
+  params: RouteParams,
+) {
+  if (stack === 'Flat') {
+    return {
+      routes: [{name: route, params}],
+    }
+  }
+  return {
+    routes: [
+      {
+        name: stack,
+        state: {
+          routes: [{name: route, params}],
+        },
+      },
+    ],
+  }
+}