checkboxed-list-input.ts
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checkboxed-list-input.ts
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	import { is, predicates } from "@sealcode/ts-predicates";
	import { Context } from "koa";
	import { tempstream } from "tempstream";
	import { getRequiredClass, inputWrapper } from "../../utils/input-wrapper";
	import { ChekboxedListField } from "../fields/field";
	import { FormDataValue } from "../form";
	import { FormFieldControl } from "./controls";

	export class CheckboxedListInput extends FormFieldControl {
	constructor(
	public field: ChekboxedListField<boolean>,
	public options: { label: string } = { label: field.name }
	) {
	super([field]);
	}

	async render(ctx: Context, data: Record<string, FormDataValue>) {
	const { parsed: pickedValues } = await this.field.getValue(ctx, data);
	if (!is(pickedValues, predicates.array(predicates.string))) {
	throw new Error("picked values is not an array of strings");
	}
	const [options, isVisible] = await Promise.all([
	this.field.generateOptions(ctx),
	this.field.isVisible(ctx),
	]);

	const { name, required } = this.field;

	return tempstream/* HTML */ `${isVisible
	? Object.entries(options).map(([value, text]) =>
	inputWrapper(
	[name, getRequiredClass(required)],
	/* HTML */ `
	<input
	type="checkbox"
	id="${name}.${value}"
	name="${name}.${value}"
	${pickedValues.includes(value) ? "checked" : ""}
	/>
	<label for="${name}.${value}">${text}</label>
	`
	)
	)
	: ""}`;
	}
	}