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import { AbstractControl, ValidatorFn, Validators } from '@angular/forms'
import { BuildFormValidator } from './form-validator.model'
export function validateHost (value: string) {
// Thanks to http://stackoverflow.com/a/106223
const HOST_REGEXP = new RegExp(
'^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9-]*[a-zA-Z0-9]).)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9-]*[A-Za-z0-9])$'
)
return HOST_REGEXP.test(value)
}
export function validateHandle (value: string) {
if (!value) return false
return value.includes('@')
}
const validHosts: ValidatorFn = (control: AbstractControl) => {
if (!control.value) return null
const errors = []
const hosts = splitAndGetNotEmpty(control.value)
for (const host of hosts) {
if (validateHost(host) === false) {
errors.push($localize`${host} is not valid`)
}
}
// valid
if (errors.length === 0) return null
return {
validHosts: {
reason: 'invalid',
value: errors.join('. ') + '.'
}
}
}
const validHostsOrHandles: ValidatorFn = (control: AbstractControl) => {
if (!control.value) return null
const errors = []
const lines = splitAndGetNotEmpty(control.value)
for (const line of lines) {
if (validateHost(line) === false && validateHandle(line) === false) {
errors.push($localize`${line} is not valid`)
}
}
// valid
if (errors.length === 0) return null
return {
validHostsOrHandles: {
reason: 'invalid',
value: errors.join('. ') + '.'
}
}
}
// ---------------------------------------------------------------------------
export function splitAndGetNotEmpty (value: string) {
return value
.split('\n')
.filter(line => line && line.length !== 0) // Eject empty hosts
}
export const unique: ValidatorFn = (control: AbstractControl) => {
if (!control.value) return null
const hosts = splitAndGetNotEmpty(control.value)
if (hosts.every((host: string) => hosts.indexOf(host) === hosts.lastIndexOf(host))) {
return null
}
return {
unique: {
reason: 'invalid'
}
}
}
export const UNIQUE_HOSTS_VALIDATOR: BuildFormValidator = {
VALIDATORS: [ Validators.required, validHosts, unique ],
MESSAGES: {
required: $localize`Domain is required.`,
validHosts: $localize`Hosts entered are invalid.`,
unique: $localize`Hosts entered contain duplicates.`
}
}
export const UNIQUE_HOSTS_OR_HANDLE_VALIDATOR: BuildFormValidator = {
VALIDATORS: [ Validators.required, validHostsOrHandles, unique ],
MESSAGES: {
required: $localize`Domain is required.`,
validHostsOrHandles: $localize`Hosts or handles are invalid.`,
unique: $localize`Hosts or handles contain duplicates.`
}
}
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