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1 | import { Injectable } from '@angular/core' | |
2 | import { AsyncValidatorFn, FormArray, FormBuilder, FormControl, FormGroup, ValidatorFn } from '@angular/forms' | |
3 | import { objectKeysTyped } from '@shared/core-utils' | |
4 | import { BuildFormArgument, BuildFormDefaultValues } from '../form-validators/form-validator.model' | |
5 | import { FormReactiveErrors, FormReactiveValidationMessages } from './form-reactive.service' | |
6 | ||
7 | @Injectable() | |
8 | export class FormValidatorService { | |
9 | ||
10 | constructor ( | |
11 | private formBuilder: FormBuilder | |
12 | ) {} | |
13 | ||
14 | buildForm (obj: BuildFormArgument, defaultValues: BuildFormDefaultValues = {}) { | |
15 | const formErrors: FormReactiveErrors = {} | |
16 | const validationMessages: FormReactiveValidationMessages = {} | |
17 | const group: { [key: string]: any } = {} | |
18 | ||
19 | for (const name of Object.keys(obj)) { | |
20 | formErrors[name] = '' | |
21 | ||
22 | const field = obj[name] | |
23 | if (this.isRecursiveField(field)) { | |
24 | const result = this.buildForm(field as BuildFormArgument, defaultValues[name] as BuildFormDefaultValues) | |
25 | group[name] = result.form | |
26 | formErrors[name] = result.formErrors | |
27 | validationMessages[name] = result.validationMessages | |
28 | ||
29 | continue | |
30 | } | |
31 | ||
32 | if (field?.MESSAGES) validationMessages[name] = field.MESSAGES as { [ name: string ]: string } | |
33 | ||
34 | const defaultValue = defaultValues[name] ?? '' | |
35 | ||
36 | if (field?.VALIDATORS) group[name] = [ defaultValue, field.VALIDATORS ] | |
37 | else group[name] = [ defaultValue ] | |
38 | } | |
39 | ||
40 | const form = this.formBuilder.group(group) | |
41 | return { form, formErrors, validationMessages } | |
42 | } | |
43 | ||
44 | updateFormGroup ( | |
45 | form: FormGroup, | |
46 | formErrors: FormReactiveErrors, | |
47 | validationMessages: FormReactiveValidationMessages, | |
48 | obj: BuildFormArgument, | |
49 | defaultValues: BuildFormDefaultValues = {} | |
50 | ) { | |
51 | for (const name of objectKeysTyped(obj)) { | |
52 | formErrors[name] = '' | |
53 | ||
54 | const field = obj[name] | |
55 | if (this.isRecursiveField(field)) { | |
56 | this.updateFormGroup( | |
57 | // FIXME: typings | |
58 | (form as any)[name], | |
59 | formErrors[name] as FormReactiveErrors, | |
60 | validationMessages[name] as FormReactiveValidationMessages, | |
61 | obj[name] as BuildFormArgument, | |
62 | defaultValues[name] as BuildFormDefaultValues | |
63 | ) | |
64 | continue | |
65 | } | |
66 | ||
67 | if (field?.MESSAGES) validationMessages[name] = field.MESSAGES as { [ name: string ]: string } | |
68 | ||
69 | const defaultValue = defaultValues[name] || '' | |
70 | ||
71 | form.addControl( | |
72 | name + '', | |
73 | new FormControl(defaultValue, field?.VALIDATORS as ValidatorFn[], field?.ASYNC_VALIDATORS as AsyncValidatorFn[]) | |
74 | ) | |
75 | } | |
76 | } | |
77 | ||
78 | updateTreeValidity (group: FormGroup | FormArray): void { | |
79 | for (const key of Object.keys(group.controls)) { | |
80 | // FIXME: typings | |
81 | const abstractControl = (group.controls as any)[key] as FormControl | |
82 | ||
83 | if (abstractControl instanceof FormGroup || abstractControl instanceof FormArray) { | |
84 | this.updateTreeValidity(abstractControl) | |
85 | } else { | |
86 | abstractControl.updateValueAndValidity({ emitEvent: false }) | |
87 | } | |
88 | } | |
89 | } | |
90 | ||
91 | private isRecursiveField (field: any) { | |
92 | return field && typeof field === 'object' && !field.MESSAGES && !field.VALIDATORS | |
93 | } | |
94 | } |