Handle async validators

4 files changed, 44 insertions, 18 deletions

diff --git a/client/src/app/shared/form-validators/form-validator.model.ts b/client/src/app/shared/form-validators/form-validator.model.ts
index 6f2472ccd..31c253b9b 100644
--- a/client/src/app/shared/form-validators/form-validator.model.ts
+++ b/client/src/app/shared/form-validators/form-validator.model.ts
@@ -1,7 +1,9 @@
-import { ValidatorFn } from '@angular/forms'
+import { AsyncValidatorFn, ValidatorFn } from '@angular/forms'
 
 export type BuildFormValidator = {
   VALIDATORS: ValidatorFn[]
+  ASYNC_VALIDATORS?: AsyncValidatorFn[]
+
   MESSAGES: { [ name: string ]: string }
 }
 
diff --git a/client/src/app/shared/shared-forms/form-reactive.ts b/client/src/app/shared/shared-forms/form-reactive.ts
index 30b59c141..07a12c6f6 100644
--- a/client/src/app/shared/shared-forms/form-reactive.ts
+++ b/client/src/app/shared/shared-forms/form-reactive.ts
@@ -1,4 +1,6 @@
+
 import { FormGroup } from '@angular/forms'
+import { wait } from '@root-helpers/utils'
 import { BuildFormArgument, BuildFormDefaultValues } from '../form-validators/form-validator.model'
 import { FormValidatorService } from './form-validator.service'
 
@@ -22,30 +24,42 @@ export abstract class FormReactive {
     this.formErrors = formErrors
     this.validationMessages = validationMessages
 
-    this.form.valueChanges.subscribe(() => this.onValueChanged(this.form, this.formErrors, this.validationMessages, false))
+    this.form.statusChanges.subscribe(async status => {
+      // FIXME: remove when https://github.com/angular/angular/issues/41519 is fixed
+      await this.waitPendingCheck()
+
+      this.onStatusChanged(this.form, this.formErrors, this.validationMessages)
+    })
   }
 
-  protected forceCheck () {
-    return this.onValueChanged(this.form, this.formErrors, this.validationMessages, true)
+  protected async waitPendingCheck () {
+    if (this.form.status !== 'PENDING') return
+
+    // FIXME: the following line does not work: https://github.com/angular/angular/issues/41519
+    // return firstValueFrom(this.form.statusChanges.pipe(filter(status => status !== 'PENDING')))
+    // So we have to fallback to active wait :/
+
+    do {
+      await wait(10)
+    } while (this.form.status === 'PENDING')
   }
 
-  protected check () {
-    return this.onValueChanged(this.form, this.formErrors, this.validationMessages, false)
+  protected forceCheck () {
+    this.onStatusChanged(this.form, this.formErrors, this.validationMessages, false)
   }
 
-  private onValueChanged (
+  private onStatusChanged (
     form: FormGroup,
     formErrors: FormReactiveErrors,
     validationMessages: FormReactiveValidationMessages,
-    forceCheck = false
+    onlyDirty = true
   ) {
     for (const field of Object.keys(formErrors)) {
       if (formErrors[field] && typeof formErrors[field] === 'object') {
-        this.onValueChanged(
+        this.onStatusChanged(
           form.controls[field] as FormGroup,
           formErrors[field] as FormReactiveErrors,
-          validationMessages[field] as FormReactiveValidationMessages,
-          forceCheck
+          validationMessages[field] as FormReactiveValidationMessages
         )
         continue
       }
@@ -56,8 +70,7 @@ export abstract class FormReactive {
 
       if (control.dirty) this.formChanged = true
 
-      if (forceCheck) control.updateValueAndValidity({ emitEvent: false })
-      if (!control || !control.dirty || !control.enabled || control.valid) continue
+      if (!control || (onlyDirty && !control.dirty) || !control.enabled || !control.errors) continue
 
       const staticMessages = validationMessages[field]
       for (const key of Object.keys(control.errors)) {
@@ -65,11 +78,10 @@ export abstract class FormReactive {
 
         // Try to find error message in static validation messages first
         // Then check if the validator returns a string that is the error
-        if (typeof formErrorValue === 'boolean') formErrors[field] += staticMessages[key] + ' '
+        if (staticMessages[key]) formErrors[field] += staticMessages[key] + ' '
         else if (typeof formErrorValue === 'string') formErrors[field] += control.errors[key]
         else throw new Error('Form error value of ' + field + ' is invalid')
       }
     }
   }
-
 }
diff --git a/client/src/app/shared/shared-forms/form-validator.service.ts b/client/src/app/shared/shared-forms/form-validator.service.ts
index 055fbb2d9..0fe50ac9b 100644
--- a/client/src/app/shared/shared-forms/form-validator.service.ts
+++ b/client/src/app/shared/shared-forms/form-validator.service.ts
@@ -1,5 +1,5 @@
 import { Injectable } from '@angular/core'
-import { FormBuilder, FormControl, FormGroup, ValidatorFn } from '@angular/forms'
+import { AsyncValidatorFn, FormArray, FormBuilder, FormControl, FormGroup, ValidatorFn } from '@angular/forms'
 import { BuildFormArgument, BuildFormDefaultValues } from '../form-validators/form-validator.model'
 import { FormReactiveErrors, FormReactiveValidationMessages } from './form-reactive'
 
@@ -68,11 +68,23 @@ export class FormValidatorService {
 
       form.addControl(
         name,
-        new FormControl(defaultValue, field?.VALIDATORS as ValidatorFn[])
+        new FormControl(defaultValue, field?.VALIDATORS as ValidatorFn[], field?.ASYNC_VALIDATORS as AsyncValidatorFn[])
       )
     }
   }
 
+  updateTreeValidity (group: FormGroup | FormArray): void {
+    for (const key of Object.keys(group.controls)) {
+      const abstractControl = group.controls[key] as FormControl
+
+      if (abstractControl instanceof FormGroup || abstractControl instanceof FormArray) {
+        this.updateTreeValidity(abstractControl)
+      } else {
+        abstractControl.updateValueAndValidity({ emitEvent: false })
+      }
+    }
+  }
+
   private isRecursiveField (field: any) {
     return field && typeof field === 'object' && !field.MESSAGES && !field.VALIDATORS
   }
diff --git a/client/src/app/shared/shared-user-subscription/remote-subscribe.component.ts b/client/src/app/shared/shared-user-subscription/remote-subscribe.component.ts
index a951134eb..369692715 100644
--- a/client/src/app/shared/shared-user-subscription/remote-subscribe.component.ts
+++ b/client/src/app/shared/shared-user-subscription/remote-subscribe.component.ts
@@ -27,7 +27,7 @@ export class RemoteSubscribeComponent extends FormReactive implements OnInit {
   }
 
   onValidKey () {
-    this.check()
+    this.forceCheck()
     if (!this.form.valid) return
 
     this.formValidated()