feat(medusa): Tax-inclusive pricing (#2131)

* add feature flag for tax inclusive pricing

* update db model for TIP

* add migration

* set featureflag column decorators

* remove unused prop

* update tests to reflect feature_flags as any array

* fix types

* reference key from featureFlag file

* use feature flag key in models

* fix copy paste mistake

* unify spelling

* Create gorgeous-experts-guess.md

* feat(medusa): create/update endpoints of currency/region/price-lists/shipping-options should allow to pass includes_tax

* test(integration): continue to add some integration test

* test(integration): continue to add some integration test

* test(unit): Fix region service tests

* fix(medusa): API unit tests flags management

* feat(medusa): Minor cleanup

* style(medusa): Fix typo

* fix(medusa): rebase

* feat(medusa): Replace old tag with the new one

* feat(medusa): revert flag

* feat(medusa): Cleanup

* feat(medusa): feedback

* feat(medusa): Rename currency retrieve method

* test(medudsa): fix unit tests

* chore(medusa): fix oas

* feat(medusa): ShippingMethod should include tax setting from parent option (#2021)

* feat(medusa): Shipping method should includes tax from parent options

* feat(medusa): Condition the includes tax flag to the availability of the feature and add some other tests

* test(integration): Move cart/order ff test in separate files

* fix: snapshots folder

* fix(integration): snapshots

* Create calm-baboons-sit.md

* test(integration): file naming

Co-authored-by: Carlos R. L. Rodrigues <rodrigolr@gmail.com>

* Feat/tax inclusive pricing extend price selection strategy (#2087)

* initial changes to price selection strategy including unit tests

* typing for tax calculation

* update types and remove region and currency from prices results

* fix casing

* include tax calculation in priceselectionstrategy

* integration tests for tax inclusive pricing price calculations

* fix build

* include tax inclusive considerations when calculating tax fields for variants

* include only "includes_tax" fields from currency and region joins

* test to see errors in pipelines

* conditionally join featureflagged fields

* add "includes_tax" to price list factory

* add tests for tax inclusive price list prices and currency prices

* fix unit tests

* refactor pricing array checks to expect arraycontaining

* undo error handler

* Feat/tax inclusive pricing flag on generated lineitems (#2108)

* include tax inclusive pricing flag on generated lineitems

* initial addition of tax inclusivity for lineitem service

* add generate test to ensure that includes_tax is set when returned from price selection strategy

* add integration test for generating lineitem including tax

* add test for negative tax inclusion

* add tests for mixed pricing

* add negative test for setting tax exclusivity

* restructure the setting of includes_tax on lineitems

* fix: update cwd to be correct in cart test

* feat(medusa): Line item totals calculations (#2123)

* feat(medusa): Update totals and tax calculation way to calculate the totals

* feat(medusa): remove region feetching from decorate total

* feat(medusa): cleanup

* test(medusa): fix tax calculation tests

* comment

* test(integration): cleanup

* test(integration): cleanup

* fix(medusa): return service missing await

* feat(medusa): cleanup

* feat(medusa): cleanup

* test(integration): fix data

* feat(medusa): improve tax calculation readability

* test(medusa): improve tax calculation structure case

Co-authored-by: Sebastian Rindom <skrindom@gmail.com>

* Feat(medusa): tax inclusive pricing in shipping method tax (#2125)

* initial implementation and test

* include tax inclusive calculations for getting shipping options

* remove inaccurate comment

* remove console log

* refactor how prices and taxes are set for shipping methods

* fix integration tests

* remove verbose flag

* fix integration tests

* remove console log

* format util

* use util in price service and tax strategy

* fix faulty integration test

* undo tax calculation strategy changes in favor or Carlos' pr

* undo changes to tax calculation strategy tests

* round tax amount

* feat(medusa): cleanup calculate tax amount utils and its usage (#2136)

* feat(medusa): Refund line totals calculation (#2139)

Rely on the update of the following pr https://github.com/medusajs/medusa/pull/2136

**WIP Missing integration tests**

**What**

Update the totals calculation on the refund line to include the notion of tax inclusive

**Test**

- Update and add new tests around the refund


Fixes CORE-482

* feat(medusa): Tax inclusive discounts calculations (#2137)

**What**

- Calculate line adjustments correctly taking into account the tax inclusivity
- fix totals getLineItemTotals by adjusting the sub total with the original tax amount instead of the tax amount when the unit price includes the taxes

**Tests**
- The tests create a cart with a percentage discount of 15%, the cart includes 2 items mixing the tax inclusive and validate the items on the result cart as well as the totals on each item. I ve based my calculation validation based on what we have done + some articles around discount apply on price without taxes to validate the output.,
FIXES CORE-477

* Chore: shipping methods tax inclusive total (#2130)

* chore: calculate tax inclusive shipping methods

* chore: additional tests and check undefined tax_rate (#2157)

* chore: additional tests and check undefined tax_rate

* fix: naming + correct price type check

* fix: remove price_includes_tax from type

* fix: remove price_includes_tax from type

Co-authored-by: Philip Korsholm <philip.korsholm@hotmail.com>
Co-authored-by: adrien2p <adrien.deperetti@gmail.com>
Co-authored-by: Carlos R. L. Rodrigues <rodrigolr@gmail.com>
Co-authored-by: Philip Korsholm <88927411+pKorsholm@users.noreply.github.com>
Co-authored-by: Sebastian Rindom <skrindom@gmail.com>
Co-authored-by: Carlos R. L. Rodrigues <37986729+carlos-r-l-rodrigues@users.noreply.github.com>

packages/medusa/src/services/__tests__/discount.js

@@ -1,5 +1,8 @@
 import { IdMap, MockManager, MockRepository } from "medusa-test-utils"
 import DiscountService from "../discount"
+import { FlagRouter } from "../../utils/flag-router"
+
+const featureFlagRouter = new FlagRouter({})
 
 describe("DiscountService", () => {
   describe("create", () => {
@@ -23,6 +26,7 @@ describe("DiscountService", () => {
       discountRepository,
       discountRuleRepository,
       regionService,
+      featureFlagRouter,
     })
 
     beforeEach(() => {
@@ -160,6 +164,7 @@ describe("DiscountService", () => {
     const discountService = new DiscountService({
       manager: MockManager,
       discountRepository,
+      featureFlagRouter,
     })
 
     beforeEach(() => {
@@ -203,6 +208,7 @@ describe("DiscountService", () => {
     const discountService = new DiscountService({
       manager: MockManager,
       discountRepository,
+      featureFlagRouter,
     })
 
     beforeEach(() => {
@@ -248,6 +254,7 @@ describe("DiscountService", () => {
       discountRepository,
       discountRuleRepository,
       regionService,
+      featureFlagRouter,
     })
 
     beforeEach(() => {
@@ -345,6 +352,7 @@ describe("DiscountService", () => {
       discountRepository,
       discountRuleRepository,
       regionService,
+      featureFlagRouter,
     })
 
     beforeEach(() => {
@@ -418,6 +426,7 @@ describe("DiscountService", () => {
       discountRepository,
       discountRuleRepository,
       regionService,
+      featureFlagRouter,
     })
 
     beforeEach(() => {
@@ -466,6 +475,7 @@ describe("DiscountService", () => {
       discountRepository,
       discountRuleRepository,
       regionService,
+      featureFlagRouter,
     })
 
     beforeEach(() => {
@@ -509,6 +519,7 @@ describe("DiscountService", () => {
     const discountService = new DiscountService({
       manager: MockManager,
       discountRepository,
+      featureFlagRouter,
     })
 
     beforeEach(() => {
@@ -588,6 +599,7 @@ describe("DiscountService", () => {
       manager: MockManager,
       discountRepository,
       totalsService,
+      featureFlagRouter,
     })
 
     beforeEach(() => {
@@ -763,6 +775,7 @@ describe("DiscountService", () => {
     beforeEach(async () => {
       discountService = new DiscountService({
         manager: MockManager,
+        featureFlagRouter,
       })
       const hasReachedLimitMock = jest.fn().mockImplementation(() => false)
       const isDisabledMock = jest.fn().mockImplementation(() => false)
@@ -892,7 +905,9 @@ describe("DiscountService", () => {
   })
 
   describe("hasReachedLimit", () => {
-    const discountService = new DiscountService({})
+    const discountService = new DiscountService({
+      featureFlagRouter,
+    })
 
     it("returns true if discount limit is reached", () => {
       const discount = {
@@ -936,7 +951,9 @@ describe("DiscountService", () => {
   })
 
   describe("isDisabled", () => {
-    const discountService = new DiscountService({})
+    const discountService = new DiscountService({
+      featureFlagRouter,
+    })
 
     it("returns false if discount not disabled", async () => {
       const discount = {
@@ -972,7 +989,9 @@ describe("DiscountService", () => {
   })
 
   describe("hasNotStarted", () => {
-    const discountService = new DiscountService({})
+    const discountService = new DiscountService({
+      featureFlagRouter,
+    })
 
     it("returns true if discount has a future starts_at date", async () => {
       const discount = {
@@ -1008,7 +1027,9 @@ describe("DiscountService", () => {
   })
 
   describe("hasExpired", () => {
-    const discountService = new DiscountService({})
+    const discountService = new DiscountService({
+      featureFlagRouter,
+    })
 
     it("returns false if discount has a future ends_at date", async () => {
       const discount = {
@@ -1068,6 +1089,7 @@ describe("DiscountService", () => {
 
     const discountService = new DiscountService({
       manager: MockManager,
+      featureFlagRouter,
     })
     discountService.retrieve = retrieveMock
 
@@ -1181,6 +1203,7 @@ describe("DiscountService", () => {
       manager: MockManager,
       discountConditionRepository,
       customerService,
+      featureFlagRouter,
     })
 
     it("returns false on undefined customer id", async () => {