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1 | import { Injectable } from '@angular/core' | |
2 | import { AbstractControl, FormGroup } from '@angular/forms' | |
3 | import { wait } from '@root-helpers/utils' | |
4 | import { BuildFormArgument, BuildFormDefaultValues } from '../form-validators/form-validator.model' | |
5 | import { FormValidatorService } from './form-validator.service' | |
6 | ||
7 | export type FormReactiveErrors = { [ id: string ]: string | FormReactiveErrors } | |
8 | export type FormReactiveValidationMessages = { | |
9 | [ id: string ]: { [ name: string ]: string } | FormReactiveValidationMessages | |
10 | } | |
11 | ||
12 | @Injectable() | |
13 | export class FormReactiveService { | |
14 | ||
15 | constructor (private formValidatorService: FormValidatorService) { | |
16 | ||
17 | } | |
18 | ||
19 | buildForm (obj: BuildFormArgument, defaultValues: BuildFormDefaultValues = {}) { | |
20 | const { formErrors, validationMessages, form } = this.formValidatorService.buildForm(obj, defaultValues) | |
21 | ||
22 | form.statusChanges.subscribe(async () => { | |
23 | // FIXME: remove when https://github.com/angular/angular/issues/41519 is fixed | |
24 | await this.waitPendingCheck(form) | |
25 | ||
26 | this.onStatusChanged({ form, formErrors, validationMessages }) | |
27 | }) | |
28 | ||
29 | return { form, formErrors, validationMessages } | |
30 | } | |
31 | ||
32 | async waitPendingCheck (form: FormGroup) { | |
33 | if (form.status !== 'PENDING') return | |
34 | ||
35 | // FIXME: the following line does not work: https://github.com/angular/angular/issues/41519 | |
36 | // return firstValueFrom(form.statusChanges.pipe(filter(status => status !== 'PENDING'))) | |
37 | // So we have to fallback to active wait :/ | |
38 | ||
39 | do { | |
40 | await wait(10) | |
41 | } while (form.status === 'PENDING') | |
42 | } | |
43 | ||
44 | markAllAsDirty (controlsArg: { [ key: string ]: AbstractControl }) { | |
45 | const controls = controlsArg | |
46 | ||
47 | for (const key of Object.keys(controls)) { | |
48 | const control = controls[key] | |
49 | ||
50 | if (control instanceof FormGroup) { | |
51 | this.markAllAsDirty(control.controls) | |
52 | continue | |
53 | } | |
54 | ||
55 | control.markAsDirty() | |
56 | } | |
57 | } | |
58 | ||
59 | forceCheck (form: FormGroup, formErrors: any, validationMessages: FormReactiveValidationMessages) { | |
60 | this.onStatusChanged({ form, formErrors, validationMessages, onlyDirty: false }) | |
61 | } | |
62 | ||
63 | private onStatusChanged (options: { | |
64 | form: FormGroup | |
65 | formErrors: FormReactiveErrors | |
66 | validationMessages: FormReactiveValidationMessages | |
67 | onlyDirty?: boolean // default true | |
68 | }) { | |
69 | const { form, formErrors, validationMessages, onlyDirty = true } = options | |
70 | ||
71 | for (const field of Object.keys(formErrors)) { | |
72 | if (formErrors[field] && typeof formErrors[field] === 'object') { | |
73 | this.onStatusChanged({ | |
74 | form: form.controls[field] as FormGroup, | |
75 | formErrors: formErrors[field] as FormReactiveErrors, | |
76 | validationMessages: validationMessages[field] as FormReactiveValidationMessages, | |
77 | onlyDirty | |
78 | }) | |
79 | ||
80 | continue | |
81 | } | |
82 | ||
83 | // clear previous error message (if any) | |
84 | formErrors[field] = '' | |
85 | const control = form.get(field) | |
86 | ||
87 | if (!control || (onlyDirty && !control.dirty) || !control.enabled || !control.errors) continue | |
88 | ||
89 | const staticMessages = validationMessages[field] | |
90 | for (const key of Object.keys(control.errors)) { | |
91 | const formErrorValue = control.errors[key] | |
92 | ||
93 | // Try to find error message in static validation messages first | |
94 | // Then check if the validator returns a string that is the error | |
95 | if (staticMessages[key]) formErrors[field] += staticMessages[key] + ' ' | |
96 | else if (typeof formErrorValue === 'string') formErrors[field] += control.errors[key] | |
97 | else throw new Error('Form error value of ' + field + ' is invalid') | |
98 | } | |
99 | } | |
100 | } | |
101 | } |