/* global defineEventHandler, createError, readBody */

import { database } from "../utils/database";
import Snowflake from "../utils/snowflake";
import { client } from "~/utils/types/database";

const clientKeys = [
  "name",
  "address",
  "phone",
  "email",
];

export function checkIsClient(
  value: any,
  required = true,
): value is Partial<Omit<client, "id">> {
  const errors = new Map<string, string>();

  if (typeof value !== "object") {
    throw createError({
      statusCode: 400,
      message: "Invalid body",
    });
  }

  if (!(typeof value.name === "string" || value.name === null || (!required && value.name === undefined))) errors.set("name", "is not string or null");
  if (!(typeof value.address === "string" || value.address === null || (!required && value.address === undefined))) errors.set("address", "is not string or null");
  if (!(typeof value.phone === "string" || value.phone === null || (!required && value.phone === undefined))) errors.set("phone", "is not string or null");
  if (!(typeof value.email === "string" || value.email === null || (!required && value.email === undefined))) errors.set("email", "is not string or null");

  for (const i in value)
    if (!clientKeys.includes(i)) errors.set(i, `excessive property`);

  if (errors.size !== 0) {
    let message = "Invalid Parameters: ";
    for (const i in errors)
      message += i + ", ";
    message = message.slice(0, -2);
    throw createError({
      statusCode: 400,
      message,
      data: {
        errors: Object.fromEntries(errors),
      },
    });
  }

  return true;
}

export default defineEventHandler(async (e) => {
  const body = await readBody(e);
  const id = new Snowflake().toString();

  if (!checkIsClient(body)) return; // checkIsClient already throws an detailed error

  await database.query(
    "INSERT INTO `clients` VALUES (?, ?, ?, ?, ?)",
    [id, body.name, body.address, body.phone, body.email],
  );

  // FIXME: data may be turncated in the database
  //        either throw an error when data is too large or
  //        reply with turncated data
  return { id, ...body };
});