Add splash screen on web and desktop

[vladamx]

Details

Since startup on web and desktop is not instant we want to avoid having long blank screen while app is starting up. This is especially visible when resources are not cached and network is slow.

Instead, we want to show a splash screen similar to the native mobile experience we already have.

The idea is to show the splash after specified minimum display time(avoids junk) and then wait for React to mount the root element with content, which will replace the splash screen with app content.

Open questions: @roryabraham

1. Do we transpile and minify inline script that is needed inside index.html?
2. Should we use webpack plugin to inline the script for us and have the script in the separate file? https://www.npmjs.com/package/html-inline-script-webpack-plugin
3. Minimum display time is open for discussion. I put 1.5 second.

UI Responsivness Preview:

https://user-images.githubusercontent.com/11381171/199226252-021c21eb-7587-428e-b97d-895e1ba87a80.mov

Fixed Issues

$ https://github.com/Expensify/App/issues/12234 $ https://github.com/Expensify/App/issues/12234#issuecomment-1295189707

QA / Tests

1. Open the application on web or desktop
2. Verify that splash screen appears for 1.5s and no blank screen is visible

• [x] Verify that no errors appear in the JS console

PR Review Checklist

PR Author Checklist

• [x] I linked the correct issue in the ### Fixed Issues section above
• [x] I wrote clear testing steps that cover the changes made in this PR
  • [x] I added steps for local testing in the Tests section
  • [x] I added steps for Staging and/or Production testing in the QA steps section
  • [x] I added steps to cover failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
  • [x] I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
• [x] I included screenshots or videos for tests on all platforms
• [x] I ran the tests on all platforms & verified they passed on:
  • [x] iOS / native
  • [x] Android / native
  • [x] iOS / Safari
  • [x] Android / Chrome
  • [x] MacOS / Chrome
  • [x] MacOS / Desktop
• [x] I verified there are no console errors (if there's a console error not related to the PR, report it or open an issue for it to be fixed)
• [x] I followed proper code patterns (see Reviewing the code)
  • [x] I verified that any callback methods that were added or modified are named for what the method does and never what callback they handle (i.e. toggleReport and not onIconClick)
  • [x] I verified that comments were added to code that is not self explanatory
  • [x] I verified that any new or modified comments were clear, correct English, and explained "why" the code was doing something instead of only explaining "what" the code was doing.
  • [x] I verified any copy / text shown in the product was added in all src/languages/* files
  • [x] I verified any copy / text that was added to the app is correct English and approved by marketing by adding the Waiting for Copy label for a copy review on the original GH to get the correct copy.
  • [x] I verified proper file naming conventions were followed for any new files or renamed files. All non-platform specific files are named after what they export and are not named "index.js". All platform-specific files are named for the platform the code supports as outlined in the README.
  • [x] I verified the JSDocs style guidelines (in STYLE.md) were followed
• [x] If a new code pattern is added I verified it was agreed to be used by multiple Expensify engineers
• [x] I followed the guidelines as stated in the Review Guidelines
• [x] I tested other components that can be impacted by my changes (i.e. if the PR modifies a shared library or component like Avatar, I verified the components using Avatar are working as expected)
• [x] I verified all code is DRY (the PR doesn't include any logic written more than once, with the exception of tests)
• [x] I verified any variables that can be defined as constants (ie. in CONST.js or at the top of the file that uses the constant) are defined as such
• [x] If a new component is created I verified that:
  • [x] A similar component doesn't exist in the codebase
  • [x] All props are defined accurately and each prop has a /** comment above it */
  • [x] The file is named correctly
  • [x] The component has a clear name that is non-ambiguous and the purpose of the component can be inferred from the name alone
  • [x] The only data being stored in the state is data necessary for rendering and nothing else
  • [x] For Class Components, any internal methods passed to components event handlers are bound to this properly so there are no scoping issues (i.e. for onClick={this.submit} the method this.submit should be bound to this in the constructor)
  • [x] Any internal methods bound to this are necessary to be bound (i.e. avoid this.submit = this.submit.bind(this); if this.submit is never passed to a component event handler like onClick)
  • [x] All JSX used for rendering exists in the render method
  • [x] The component has the minimum amount of code necessary for its purpose, and it is broken down into smaller components in order to separate concerns and functions
• [x] If a new CSS style is added I verified that:
  • [x] A similar style doesn't already exist
  • [x] The style can't be created with an existing StyleUtils function (i.e. StyleUtils.getBackgroundAndBorderStyle(themeColors.componentBG)
• [x] If the PR modifies a generic component, I tested and verified that those changes do not break usages of that component in the rest of the App (i.e. if a shared library or component like Avatar is modified, I verified that Avatar is working as expected in all cases)
• [x] If the PR modifies a component related to any of the existing Storybook stories, I tested and verified all stories for that component are still working as expected.
• [x] I have checked off every checkbox in the PR author checklist, including those that don't apply to this PR.

PR Reviewer Checklist

The reviewer will copy/paste it into a new comment and complete it after the author checklist is completed

• [ ] I have verified the author checklist is complete (all boxes are checked off).
• [ ] I verified the correct issue is linked in the ### Fixed Issues section above
• [ ] I verified testing steps are clear and they cover the changes made in this PR
  • [ ] I verified the steps for local testing are in the Tests section
  • [ ] I verified the steps for Staging and/or Production testing are in the QA steps section
  • [ ] I verified the steps cover any possible failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
  • [ ] I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
• [ ] I checked that screenshots or videos are included for tests on all platforms
• [ ] I included screenshots or videos for tests on all platforms
• [ ] I verified tests pass on all platforms & I tested again on:
  • [ ] iOS / native
  • [ ] Android / native
  • [ ] iOS / Safari
  • [ ] Android / Chrome
  • [ ] MacOS / Chrome
  • [ ] MacOS / Desktop
• [ ] If there are any errors in the console that are unrelated to this PR, I either fixed them (preferred) or linked to where I reported them in Slack
• [ ] I verified proper code patterns were followed (see Reviewing the code)
  • [ ] I verified that any callback methods that were added or modified are named for what the method does and never what callback they handle (i.e. toggleReport and not onIconClick).
  • [ ] I verified that comments were added to code that is not self explanatory
  • [ ] I verified that any new or modified comments were clear, correct English, and explained "why" the code was doing something instead of only explaining "what" the code was doing.
  • [ ] I verified any copy / text shown in the product was added in all src/languages/* files
  • [ ] I verified any copy / text that was added to the app is correct English and approved by marketing by adding the Waiting for Copy label for a copy review on the original GH to get the correct copy.
  • [ ] I verified proper file naming conventions were followed for any new files or renamed files. All non-platform specific files are named after what they export and are not named "index.js". All platform-specific files are named for the platform the code supports as outlined in the README.
  • [ ] I verified the JSDocs style guidelines (in STYLE.md) were followed
• [ ] If a new code pattern is added I verified it was agreed to be used by multiple Expensify engineers
• [ ] I verified that this PR follows the guidelines as stated in the Review Guidelines
• [ ] I verified other components that can be impacted by these changes have been tested, and I retested again (i.e. if the PR modifies a shared library or component like Avatar, I verified the components using Avatar have been tested & I retested again)
• [ ] I verified all code is DRY (the PR doesn't include any logic written more than once, with the exception of tests)
• [ ] I verified any variables that can be defined as constants (ie. in CONST.js or at the top of the file that uses the constant) are defined as such
• [ ] If a new component is created I verified that:
  • [ ] A similar component doesn't exist in the codebase
  • [ ] All props are defined accurately and each prop has a /** comment above it */
  • [ ] The file is named correctly
  • [ ] The component has a clear name that is non-ambiguous and the purpose of the component can be inferred from the name alone
  • [ ] The only data being stored in the state is data necessary for rendering and nothing else
  • [ ] For Class Components, any internal methods passed to components event handlers are bound to this properly so there are no scoping issues (i.e. for onClick={this.submit} the method this.submit should be bound to this in the constructor)
  • [ ] Any internal methods bound to this are necessary to be bound (i.e. avoid this.submit = this.submit.bind(this); if this.submit is never passed to a component event handler like onClick)
  • [ ] All JSX used for rendering exists in the render method
  • [ ] The component has the minimum amount of code necessary for its purpose, and it is broken down into smaller components in order to separate concerns and functions
• [ ] If a new CSS style is added I verified that:
  • [ ] A similar style doesn't already exist
  • [ ] The style can't be created with an existing StyleUtils function (i.e. StyleUtils.getBackgroundAndBorderStyle(themeColors.componentBG)
• [ ] If the PR modifies a generic component, I tested and verified that those changes do not break usages of that component in the rest of the App (i.e. if a shared library or component like Avatar is modified, I verified that Avatar is working as expected in all cases)
• [ ] If the PR modifies a component related to any of the existing Storybook stories, I tested and verified all stories for that component are still working as expected.
• [ ] I have checked off every checkbox in the PR reviewer checklist, including those that don't apply to this PR.

Screenshots

Web

https://user-images.githubusercontent.com/11381171/199225953-a7b427a8-8321-4414-96a4-fa32888248f9.mov

Mobile Web - Chrome

https://user-images.githubusercontent.com/11381171/199227411-77b4afc9-a3e9-4fcc-bb12-9b4c7d65c3d6.mov

Mobile Web - Safari

https://user-images.githubusercontent.com/11381171/199227363-4b4aabb3-1a1a-47d8-9e98-666ac6f48eaa.mov

Desktop

https://user-images.githubusercontent.com/11381171/199227711-4964ab64-1d55-4261-bfef-3a1c0e7171da.mov

iOS

Not affected

Android

Not affected

[roryabraham]

@vladamx @rushatgabhane What do you think? Should we just leave this as-is or implement https://www.npmjs.com/package/html-inline-script-webpack-plugin and https://www.npmjs.com/package/html-inline-css-webpack-plugin ?

[rushatgabhane]

https://github.com/Expensify/App/issues/12234#issuecomment-1303976097

replied in issue to implement webpack-plugin

[vladamx]

@roryabraham Updated.

This is the inlined output

[rushatgabhane]

@vladamx can you please help me trigger the splash screen

I tried

1. npm run desktop
2. cmd + r and cmd + shift + r to reload

https://user-images.githubusercontent.com/29673073/200691223-af9776a2-f83f-41dd-8520-01af9246850e.mov

[vladamx]

@rushatgabhane Hm, I've just tested again and it seems to work fine on my side. Can you restart the server and if it persists can you provide some logs from the console or network tab if any?

https://user-images.githubusercontent.com/11381171/200693144-43391b75-f30f-45bb-8049-3499cde4b606.mov

[vladamx]

@roryabraham Updated

[roryabraham]

All yours @rushatgabhane

[vladamx]

Updated. Svg had its own sizing i needed to overwrite with higher specificity selector

[OSBotify]

:hand: This PR was not deployed to staging yet because QA is ongoing. It will be automatically deployed to staging after the next production release.

[OSBotify]

🚀 Deployed to staging by @roryabraham in version: 1.2.28-0 🚀

platform	result
🤖 android 🤖	success ✅
🖥 desktop 🖥	success ✅
🍎 iOS 🍎	failure ❌
🕸 web 🕸	success ✅

[OSBotify]

🚀 Deployed to staging by @roryabraham in version: 1.2.28-0 🚀

platform	result
🤖 android 🤖	success ✅
🖥 desktop 🖥	success ✅
🍎 iOS 🍎	success ✅
🕸 web 🕸	success ✅

[roryabraham]

Just coming full circle here, this PR caused a regression. It worked on dev but not staging and production. We could have prevented this regression by locally testing staging and production builds. We generally don't do that on all PRs, but it's usually a good idea when changing code in the web or desktop directories.

[OSBotify]

🚀 Deployed to production by @roryabraham in version: 1.2.28-2 🚀

platform	result
🤖 android 🤖	success ✅
🖥 desktop 🖥	success ✅
🍎 iOS 🍎	success ✅
🕸 web 🕸	success ✅