import { formatWithPrettier } from "../utils/prettier.js";

const defaults = {
	postimport: `
         import { Fields } from "@sealcode/sealgen";
         import type {FormDataValue} from "@sealcode/sealgen";`,
	get_fields: `()=>(<const>{ password: new Fields.Password(true) })`,
	get_controls: `
	(fields: ReturnType<typeof getFields>)=>[new Controls.SimpleInput(fields.password, {
			label: "Password:",
			type: "password",
})]`,
	validate_method: `async validateValues(
		ctx: Context,
		data: Record<string, FormDataValue>
	): Promise<{ valid: boolean; error: string }> {
		// just a silly example, please remove this with better logic
		const { parsed: email } = await this.fields.email.getParsedValue(ctx, data);
		const { parsed: password } = await this.fields.password.getParsedValue(ctx, data);
		// eslint-disable-next-line @typescript-eslint/consistent-type-assertions
		if ((password || "").length > ((email as string) || "").length) {
			return { valid: false, error: "Password cannot be longer than email" };
		} else {
			return { valid: true, error: "" };
		}
	}`,
	onsubmit: `	async onSubmit() {
		//noop
		return;
	}`,
	can_access: `	// eslint-disable-next-line @typescript-eslint/no-unused-vars
        async canAccess(_: Context) {
	    	return { canAccess: true, message: "" };
	    }`,
	render: `async render(ctx: Context, data: FormData, show_field_errors: boolean) {
	return html({ctx, title: "Form", description: "", css_clumps: ["admin-forms"], body: await super.render(ctx, data, show_field_errors)});
	}`,
	get_initial_values: "",
	other_methods: "",
	success_message: "Success!",
};

export async function formTemplate(
	action_name: string,
	_params: Partial<typeof defaults> = defaults
): Promise<string> {
	const params = { ...defaults, ..._params };
	const content = `import type { Context } from "koa";
import type { FormData } from "@sealcode/sealgen";
import { Form,  Controls } from "@sealcode/sealgen";
import html from "src/back/html.js";

${params.postimport}

export const actionName = "${action_name}";

const getFields = ${params.get_fields};

export default new (class ${action_name}Form extends Form<ReturnType<typeof getFields>, void> {
	defaultSuccessMessage = "Formularz wypełniony poprawnie";
    getFields = getFields;

    getControls = ${params.get_controls};

   ${params.other_methods}

   ${params.get_initial_values}

   ${params.onsubmit}

   ${params.can_access}

   ${params.render}
})();
`;
	return formatWithPrettier(content);
}