import { Context } from "koa";
import { FormControlContext } from "../controls/form-control.js";
import { SimpleInput, SimpleInputOptions } from "../controls/simple-input.js";
import { FormDataValue } from "../form-types.js";
import { FieldParseResult } from "./field.js";
import { SimpleFormField } from "./simple-form-field.js";

export class DateField<Required extends boolean> extends SimpleFormField<
	Required,
	SimpleInput,
	Date
> {
	constructor(required: Required) {
		super(required, "date");
	}

	public getEmptyValue(): Date {
		return new Date("1970-01-01 00:00");
	}

	async parse(
		ctx: Context,
		raw_value: FormDataValue
	): Promise<FieldParseResult<Date>> {
		return {
			error: null,
			parsable: true,
			parsed_value: new Date(raw_value as string),
		};
	}

	getControl(): SimpleInput<SimpleInputOptions> {
		return new SimpleInput(this, {
			label: this.label || this.name,
			type: this.type,
		});
	}

	async getSealiousCreateValue(
		fctx: FormControlContext
	): Promise<string | null> {
		const { parsed } = await this.getParsedValue(
			fctx.ctx,
			fctx.data.raw_values
		);
		if (!parsed) {
			return null;
		}
		return `${parsed.getFullYear()}-${(parsed.getMonth() + 1)
			.toString()
			.padStart(2, "0")}-${parsed.getDate().toString().padStart(2, "0")}`;
	}
}