import { type Application, type RequestHandler, type Response, Router } from "express";
import { z } from "zod/v4";

import {
  MailItemParamsSchema,
  MailParamsSchema,
  SaveMailRequestSchema,
} from "../../../common/mail-configurations";
import type { MailConfigurationUseCases } from "../../application/mail-configuration.use-cases";
import { buildMailResponse } from "../../application/mail-configuration-response.builder";

function fail(response: Response, code: string) {
  response
    .status(code === "INVALID_REQUEST" ? 400 : code.endsWith("NOT_FOUND") ? 404 : 409)
    .json({ code, requestId: response.getHeader("x-request-id") });
}
export function registerMailRoutes(
  app: Application,
  useCases: MailConfigurationUseCases,
  authenticate: RequestHandler
) {
  const router = Router();
  router.get("/:companyId", (request, response, next) => {
    const params = MailParamsSchema.safeParse(request.params);
    if (!(params.success && z.strictObject({}).safeParse(request.query).success)) {
      fail(response, "INVALID_REQUEST");
      return;
    }
    useCases
      .get(params.data.companyId)
      .then((result) => {
        if (!result.isSuccess) {
          fail(response, result.error.code);
          return;
        }
        response.json({
          configurations: result.data.configurations.map((item) =>
            buildMailResponse(item, result.data)
          ),
        });
      })
      .catch(next);
  });
  for (const path of ["/:companyId", "/:companyId/:id/update"]) {
    router.post(path, (request, response, next) => {
      const params = (path.endsWith("update") ? MailItemParamsSchema : MailParamsSchema).safeParse(
        request.params
      );
      const body = SaveMailRequestSchema.safeParse(request.body);
      const actor = z
        .object({ userId: z.uuid() })
        .safeParse("session" in request ? request.session : undefined);
      if (
        !(
          params.success &&
          body.success &&
          actor.success &&
          z.strictObject({}).safeParse(request.query).success
        )
      ) {
        fail(response, "INVALID_REQUEST");
        return;
      }
      const id =
        "id" in params.data && typeof params.data.id === "string" ? params.data.id : undefined;
      useCases
        .save(params.data.companyId, id, body.data.values, actor.data.userId)
        .then((result) => {
          if (!result.isSuccess) {
            fail(response, result.error.code);
            return;
          }
          response.status(id ? 200 : 201).json({
            configuration: buildMailResponse(result.data.configuration, result.data.context),
          });
        })
        .catch(next);
    });
  }
  app.use("/api/mail-configurations", authenticate, router);
}