1 files changed, 135 insertions, 0 deletions
diff --git a/packages/aml-backoffice-ui/src/handlers/forms.ts b/packages/aml-backoffice-ui/src/handlers/forms.ts
new file mode 100644
index 000000000..2c90a69ed
--- /dev/null
+++ b/packages/aml-backoffice-ui/src/handlers/forms.ts
@@ -0,0 +1,135 @@
+import { TranslatedString } from "@gnu-taler/taler-util";
+import { InputText } from "./InputText.js";
+import { InputDate } from "./InputDate.js";
+import { InputInteger } from "./InputInteger.js";
+import { h as create, Fragment, VNode } from "preact";
+import { InputChoiceStacked } from "./InputChoiceStacked.js";
+import { InputArray } from "./InputArray.js";
+import { InputSelectMultiple } from "./InputSelectMultiple.js";
+import { InputTextArea } from "./InputTextArea.js";
+import { InputFile } from "./InputFile.js";
+import { Caption } from "./Caption.js";
+import { Group } from "./Group.js";
+import { InputSelectOne } from "./InputSelectOne.js";
+import { FormProvider } from "./FormProvider.js";
+import { InputLine } from "./InputLine.js";
+import { InputAmount } from "./InputAmount.js";
+import { InputChoiceHorizontal } from "./InputChoiceHorizontal.js";
+
+export type DoubleColumnForm = Array<DoubleColumnFormSection | undefined>;
+
+export type DoubleColumnFormSection = {
+  title: TranslatedString;
+  description?: TranslatedString;
+  fields: UIFormField[];
+};
+
+/**
+ * Constrain the type with the ui props
+ */
+type FieldType<T extends object = any, K extends keyof T = any> = {
+  group: Parameters<typeof Group>[0];
+  caption: Parameters<typeof Caption>[0];
+  array: Parameters<typeof InputArray<T, K>>[0];
+  file: Parameters<typeof InputFile<T, K>>[0];
+  selectOne: Parameters<typeof InputSelectOne<T, K>>[0];
+  selectMultiple: Parameters<typeof InputSelectMultiple<T, K>>[0];
+  text: Parameters<typeof InputText<T, K>>[0];
+  textArea: Parameters<typeof InputTextArea<T, K>>[0];
+  choiceStacked: Parameters<typeof InputChoiceStacked<T, K>>[0];
+  choiceHorizontal: Parameters<typeof InputChoiceHorizontal<T, K>>[0];
+  date: Parameters<typeof InputDate<T, K>>[0];
+  integer: Parameters<typeof InputInteger<T, K>>[0];
+  amount: Parameters<typeof InputAmount<T, K>>[0];
+};
+
+/**
+ * List all the form fields so typescript can type-check the form instance
+ */
+export type UIFormField =
+  | { type: "group"; props: FieldType["group"] }
+  | { type: "caption"; props: FieldType["caption"] }
+  | { type: "array"; props: FieldType["array"] }
+  | { type: "file"; props: FieldType["file"] }
+  | { type: "amount"; props: FieldType["amount"] }
+  | { type: "selectOne"; props: FieldType["selectOne"] }
+  | { type: "selectMultiple"; props: FieldType["selectMultiple"] }
+  | { type: "text"; props: FieldType["text"] }
+  | { type: "textArea"; props: FieldType["textArea"] }
+  | { type: "choiceStacked"; props: FieldType["choiceStacked"] }
+  | { type: "choiceHorizontal"; props: FieldType["choiceHorizontal"] }
+  | { type: "integer"; props: FieldType["integer"] }
+  | { type: "date"; props: FieldType["date"] };
+
+type FieldComponentFunction<key extends keyof FieldType> = (
+  props: FieldType[key],
+) => VNode;
+
+type UIFormFieldMap = {
+  [key in keyof FieldType]: FieldComponentFunction<key>;
+};
+
+/**
+ * Maps input type with component implementation
+ */
+const UIFormConfiguration: UIFormFieldMap = {
+  group: Group,
+  caption: Caption,
+  //@ts-ignore
+  array: InputArray,
+  text: InputText,
+  //@ts-ignore
+  file: InputFile,
+  textArea: InputTextArea,
+  //@ts-ignore
+  date: InputDate,
+  //@ts-ignore
+  choiceStacked: InputChoiceStacked,
+  //@ts-ignore
+  choiceHorizontal: InputChoiceHorizontal,
+  integer: InputInteger,
+  //@ts-ignore
+  selectOne: InputSelectOne,
+  //@ts-ignore
+  selectMultiple: InputSelectMultiple,
+  //@ts-ignore
+  amount: InputAmount,
+};
+
+export function RenderAllFieldsByUiConfig({
+  fields,
+}: {
+  fields: UIFormField[];
+}): VNode {
+  return create(
+    Fragment,
+    {},
+    fields.map((field, i) => {
+      const Component = UIFormConfiguration[
+        field.type
+      ] as FieldComponentFunction<any>;
+      return Component(field.props);
+    }),
+  );
+}
+
+type FormSet<T extends object> = {
+  Provider: typeof FormProvider<T>;
+  InputLine: <K extends keyof T>() => typeof InputLine<T, K>;
+  InputChoiceHorizontal: <K extends keyof T>() => typeof InputChoiceHorizontal<
+    T,
+    K
+  >;
+};
+export function createNewForm<T extends object>() {
+  const res: FormSet<T> = {
+    Provider: FormProvider,
+    InputLine: () => InputLine,
+    InputChoiceHorizontal: () => InputChoiceHorizontal,
+  };
+  return {
+    Provider: res.Provider,
+    InputLine: res.InputLine(),
+    InputChoiceHorizontal: res.InputChoiceHorizontal(),
+  };
+}