Service Validations (#3532)

* Adds presence, absence validators, adds errors and tests

* Refactor validator definitions, adds acceptance, exclusion

* Return real validation error message via GraphQL

* Adds inclusion validation

* Adds `in` option for acceptance

* Adds format and length validation

* Adds numericality validation

* Comments and usage examples for each validator

* Adds allowNull, allowUndefined, allowEmptyString options to presence validator

* Reorganize tests

* Adds validateUniqueness()

* Tests for validateUniqueness()

* Rewrite mock to more generic style

* No need to import PrismaClient to mock in tests

* TYPESCRIPT

* Type typo

* Make all validators accept unknown types and worry about them inside each one

* Comment typos

* Adds validateWith() for custom validation function

* Adds `model` as first argument of validateUniqueness, pass new instance of PrismaClient to callback function

* validateWith takes no arguments but function

* Humanize field names in error messages

* Reverse order of field name and value

* Don't modify field name case, just use what they gave us

* Adds email, positive and negative validators

* Tweak email validation, add tests

* Removes humanize-string

* Add $self and $scope to validateUniqueness()

* Refactors errors, allows for substitutions in error messages

* Use mustache syntax for error message interpolation

* Make options object just options, move booleans to argument list

* Update syntax to make label optional

* Remove unused argument

* Overload validateUniqueness() so that we can pass optional third parameter with message

* Rename "directive" -> "recipe"

* Adds RedwoodError, extend ServiceValidationError, allow RedwoodErrors through GraphQL

* Fix check for allow list (must be instanceof)

* Switch string interpolation to ${} to match dbAuth

Co-authored-by: Rob Cameron <rob.cameron@fastmail.com>
Co-authored-by: David Price <thedavid@thedavidprice.com>

packages/api/src/errors.ts

@@ -0,0 +1,6 @@
+export class RedwoodError extends Error {
+  constructor(message: string) {
+    super(message)
+    this.name = 'RedwoodError'
+  }
+}

packages/api/src/index.ts

@@ -1,6 +1,9 @@
 export * from './auth'
+export * from './errors'
 export * from './functions/dbAuth/DbAuthHandler'
 export { dbAuthSession } from './functions/dbAuth/shared'
+export * from './validations/validations'
+export * from './validations/errors'
 
 // @NOTE: use require, to avoid messing around with tsconfig and nested output dirs
 const packageJson = require('../package.json')