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import { FormBuilder, FormControl, FormGroup, ValidatorFn } from '@angular/forms'
import { Injectable } from '@angular/core'
import { FormReactiveErrors, FormReactiveValidationMessages } from '@app/shared/forms/form-reactive'
import { I18n } from '@ngx-translate/i18n-polyfill'
export type BuildFormValidator = {
VALIDATORS: ValidatorFn[],
MESSAGES: { [ name: string ]: string }
}
export type BuildFormArgument = {
[ id: string ]: BuildFormValidator
}
export type BuildFormDefaultValues = {
[ name: string ]: string | string[]
}
@Injectable()
export class FormValidatorService {
constructor (
private formBuilder: FormBuilder,
private i18n: I18n
) {}
buildForm (obj: BuildFormArgument, defaultValues: BuildFormDefaultValues = {}) {
const formErrors: FormReactiveErrors = {}
const validationMessages: FormReactiveValidationMessages = {}
const group: { [key: string]: any } = {}
for (const name of Object.keys(obj)) {
formErrors[name] = ''
const field = obj[name]
if (field && field.MESSAGES) validationMessages[name] = field.MESSAGES
const defaultValue = defaultValues[name] || ''
if (field && field.VALIDATORS) group[name] = [ defaultValue, field.VALIDATORS ]
else group[name] = [ defaultValue ]
}
const form = this.formBuilder.group(group)
return { form, formErrors, validationMessages }
}
updateForm (
form: FormGroup,
formErrors: FormReactiveErrors,
validationMessages: FormReactiveValidationMessages,
obj: BuildFormArgument,
defaultValues: BuildFormDefaultValues = {}
) {
for (const name of Object.keys(obj)) {
formErrors[name] = ''
const field = obj[name]
if (field && field.MESSAGES) validationMessages[name] = field.MESSAGES
const defaultValue = defaultValues[name] || ''
if (field && field.VALIDATORS) form.addControl(name, new FormControl(defaultValue, field.VALIDATORS))
else form.addControl(name, new FormControl(defaultValue))
}
}
}
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