1 import { FormBuilder, FormControl, FormGroup, ValidatorFn } from '@angular/forms'
2 import { Injectable } from '@angular/core'
3 import { FormReactiveErrors, FormReactiveValidationMessages } from '@app/shared/forms/form-reactive'
5 export type BuildFormValidator = {
6 VALIDATORS: ValidatorFn[],
7 MESSAGES: { [ name: string ]: string }
9 export type BuildFormArgument = {
10 [ id: string ]: BuildFormValidator | BuildFormArgument
12 export type BuildFormDefaultValues = {
13 [ name: string ]: string | string[] | BuildFormDefaultValues
17 export class FormValidatorService {
20 private formBuilder: FormBuilder
23 buildForm (obj: BuildFormArgument, defaultValues: BuildFormDefaultValues = {}) {
24 const formErrors: FormReactiveErrors = {}
25 const validationMessages: FormReactiveValidationMessages = {}
26 const group: { [key: string]: any } = {}
28 for (const name of Object.keys(obj)) {
31 const field = obj[name]
32 if (this.isRecursiveField(field)) {
33 const result = this.buildForm(field as BuildFormArgument, defaultValues[name] as BuildFormDefaultValues)
34 group[name] = result.form
35 formErrors[name] = result.formErrors
36 validationMessages[name] = result.validationMessages
41 if (field && field.MESSAGES) validationMessages[name] = field.MESSAGES as { [ name: string ]: string }
43 const defaultValue = defaultValues[name] || ''
45 if (field && field.VALIDATORS) group[name] = [ defaultValue, field.VALIDATORS ]
46 else group[name] = [ defaultValue ]
49 const form = this.formBuilder.group(group)
50 return { form, formErrors, validationMessages }
55 formErrors: FormReactiveErrors,
56 validationMessages: FormReactiveValidationMessages,
57 obj: BuildFormArgument,
58 defaultValues: BuildFormDefaultValues = {}
60 for (const name of Object.keys(obj)) {
63 const field = obj[name]
64 if (this.isRecursiveField(field)) {
67 formErrors[name] as FormReactiveErrors,
68 validationMessages[name] as FormReactiveValidationMessages,
69 obj[name] as BuildFormArgument,
70 defaultValues[name] as BuildFormDefaultValues
75 if (field && field.MESSAGES) validationMessages[name] = field.MESSAGES as { [ name: string ]: string }
77 const defaultValue = defaultValues[name] || ''
79 if (field && field.VALIDATORS) form.addControl(name, new FormControl(defaultValue, field.VALIDATORS as ValidatorFn[]))
80 else form.addControl(name, new FormControl(defaultValue))
84 private isRecursiveField (field: any) {
85 return field && typeof field === 'object' && !field.MESSAGES && !field.VALIDATORS