import type { APIContext } from "astro";
import { getSessionUser, userAllowedToChat, createChatMessage } from "../../db";
import { Prisma } from "@prisma/client";

export async function post({ request, cookies }: APIContext) {
    const response: { ok: boolean; reason?: string } = {
        ok: true,
    };
    try {
        const sessId = cookies.get("session").value!;
        const user = (await getSessionUser(sessId))!;

        const formData = await request.formData();
        const chatId = formData.get("chatId");
        const message = formData.get("message");
        if (chatId === null || message === null) {
            throw new Error("Не предоставлены данные отправки сообщения");
        }

        const userAllowed = await userAllowedToChat(user.id, chatId.toString());
        if (!userAllowed) {
            throw new Error("Нет доступа к чату");
        }

        await createChatMessage(chatId.toString(), user.id, message.toString());

        response.ok = true;
    } catch (e: any) {
        response.ok = false;
        if (e instanceof Prisma.PrismaClientKnownRequestError) {
            response.reason = `Неизвестная ошибка базы данных. Код ${e.code}`;
        } else if (e instanceof Error) {
            response.reason = e.message.trim();
        } else {
            response.reason = e.toString().trim();
        }
    }

    return {
        body: JSON.stringify(response),
    };
}