1 files changed, 96 insertions, 0 deletions

diff --git a/src/helpers/validation-helpers.ts b/src/helpers/validation-helpers.ts
new file mode 100644
index 000000000..23c297443
--- /dev/null
+++ b/src/helpers/validation-helpers.ts
@@ -0,0 +1,96 @@
+import { defineMessages } from 'react-intl';
+import isEmail from 'validator/lib/isEmail';
+
+const messages = defineMessages({
+  required: {
+    id: 'validation.required',
+    defaultMessage: '{field} is required',
+  },
+  email: {
+    id: 'validation.email',
+    defaultMessage: '{field} is not valid',
+  },
+  url: {
+    id: 'validation.url',
+    defaultMessage: '{field} is not a valid URL',
+  },
+  minLength: {
+    id: 'validation.minLength',
+    defaultMessage: '{field} should be at least {length} characters long',
+  },
+  oneRequired: {
+    id: 'validation.oneRequired',
+    defaultMessage: 'At least one is required',
+  },
+});
+
+export function required({ field }) {
+  const isValid = field.value.trim() !== '';
+  return [
+    isValid,
+    (window as any).ferdi.intl.formatMessage(messages.required, {
+      field: field.label,
+    }),
+  ];
+}
+
+export function email({ field }) {
+  const value = field.value.trim();
+  const isValid = isEmail(value);
+  return [
+    isValid,
+    (window as any).ferdi.intl.formatMessage(messages.email, {
+      field: field.label,
+    }),
+  ];
+}
+
+export function url({ field }) {
+  const value = field.value.trim();
+  let isValid = false;
+
+  isValid =
+    value !== ''
+      ? Boolean(
+          // eslint-disable-next-line unicorn/better-regex
+          /(^|[\s.:;?\-\]<(])(https?:\/\/[-\w;/?:@&=+$|_.!~*|'()[\]%#,☺]+[\w/#](\(\))?)(?=$|[\s',|().:;?\-[\]>)])/i.test(
+            value,
+          ),
+        )
+      : true;
+
+  return [
+    isValid,
+    (window as any).ferdi.intl.formatMessage(messages.url, {
+      field: field.label,
+    }),
+  ];
+}
+
+export function minLength(length: number) {
+  return ({ field }) => {
+    let isValid = true;
+    if (field.touched) {
+      isValid = field.value.length >= length;
+    }
+    return [
+      isValid,
+      (window as any).ferdi.intl.formatMessage(messages.minLength, {
+        field: field.label,
+        length,
+      }),
+    ];
+  };
+}
+
+export function oneRequired(targets: string[]) {
+  return ({ field, form }) => {
+    const invalidFields = targets.filter(target => form.$(target).value === '');
+    return [
+      targets.length !== invalidFields.length,
+      (window as any).ferdi.intl.formatMessage(messages.required, {
+        field: field.label,
+      }),
+    ];
+  };
+}