import { DatabaseError, ErrorBase, InputError } from "@/errors";
import Logger from "@/lib/logger";
import { ChannelEntity } from "@/modules/entities/Channel";
import type { FastifyInstance } from "fastify";
import z from "zod/v3";

export default async function ChannelGet(fastify: FastifyInstance) {
  const logger = new Logger("Endpoint | channel/get");

  fastify.post("/", async (req, res) => {
    res.header("Content-Type", "application/json");

    if ("error" in req.token)
      return res.code(400).send(req.token);
    
    const bodySchema = z.object({
      id: z.string().length(10),
    });

    const result = bodySchema.safeParse(req.body);

    if (!result.success) {
      return res.code(400).send(InputError(result.error.issues));
    }

    try {
      const channelRepo = fastify.orm.em.getRepository(ChannelEntity);

      const findResult = await channelRepo.find({
        id: result.data.id,
      });

      if (findResult[0] === undefined) {
        return res.code(400).send(ErrorBase({
          bad: "client",
          code: "channel_not_found",
          message: "対象のチャンネルが見つかりませんでした。",
        }));
      }

      return res.send({
        success: true,
        channel: findResult[0],
      });
    } catch (err) {
      logger.error("Database Error:", err);
      
      return res.code(500).send(DatabaseError());
    }
  });
}