enhancement: add ability to set tax rate for individual items

[ajaysehwal]

Description

Relates to issue: ZEUS- #3053

Please enter a description and screenshots, if appropriate, of the work covered in this PR

Products with custom tax and Global tax

Products with only Global Tax

Products with flat prices

This pull request is categorized as a:

• [x] New feature
• [ ] Bug fix
• [x] Code refactor
• [ ] Configuration change
• [ ] Locales update
• [ ] Quality assurance
• [ ] Other

Checklist

• [x] I’ve run yarn run tsc and made sure my code compiles correctly
• [x] I’ve run yarn run lint and made sure my code didn’t contain any problematic patterns
• [x] I’ve run yarn run prettier and made sure my code is formatted correctly
• [x] I’ve run yarn run test and made sure all of the tests pass

Testing

If you modified or added a utility file, did you add new unit tests?

• [ ] No, I’m a fool
• [ ] Yes
• [x] N/A

I have tested this PR on the following platforms (please specify OS version and phone model/VM):

• [ ] Android
• [x] iOS

I have tested this PR with the following types of nodes (please specify node version and API version where appropriate):

• [ ] Embedded LND
• [ ] LND (REST)
• [ ] LND (Lightning Node Connect)
• [ ] Core Lightning (CLNRest)
• [ ] Nostr Wallet Connect
• [ ] LndHub

Locales

• [ ] I’ve added new locale text that requires translations
• [ ] I’m aware that new translations should be made on the ZEUS Transfix page and not directly to this repo

Third Party Dependencies and Packages

• [ ] Contributors will need to run yarn after this PR is merged in
• [ ] 3rd party dependencies have been modified:
  • verify that package.json and yarn.lock have been properly updated
  • verify that dependencies are installed for both iOS and Android platforms

Other:

• [ ] Changes were made that require an update to the README
• [ ] Changes were made that require an update to onboarding

[kaloudis]

If you have an order that only uses items that have the global tax, does it still display the % next to each item?

[ajaysehwal]

If you have an order that only uses items that have the global tax, does it still display the % next to each item?

Yeah, if you look at this screenshot, +20% is the global tax

[kaloudis]

If you have an order that only uses items that have the global tax, does it still display the % next to each item?

Yeah, if you look at this screenshot, +20% is the global tax

This screen shot has a mix of global and own tax items. What does it look like when you have an order with items that do not have their own tax (global tax only)?

[ajaysehwal]

If you have an order that only uses items that have the global tax, does it still display the % next to each item?

Yeah, if you look at this screenshot, +20% is the global tax

This screen shot has a mix of global and own tax items. What does it look like when you have an order with items that do not have their own tax (global tax only)?

so you mean if no one product has its own tax, then we show the global tax at once, not with all products

[kaloudis]

If you have an order that only uses items that have the global tax, does it still display the % next to each item?

Yeah, if you look at this screenshot, +20% is the global tax

This screen shot has a mix of global and own tax items. What does it look like when you have an order with items that do not have their own tax (global tax only)?

so you mean if no one product has its own tax, then we show the global tax at once, not with all products

Exactly.

[shubhamkmr04]

Tax calculation here doesn't look right it should be 100 sats + (~863 sats) + 900 sats = 1863 sats ($1.95)

[ajaysehwal]

[kaloudis]

Still waiting on a screenshot of an order with only the global tax rate

[ajaysehwal]

only the global tax rate

[ajaysehwal]

Hi @kaloudis, could you please review this PR now ?

[kaloudis]

@ajaysehwal rebase, don't do merge commits