import { Request, Response, NextFunction } from 'express';
import { z } from 'zod';
import { db } from '@server/db';
import { resources } from '@server/db/schema';
import { eq } from 'drizzle-orm';
import response from "@server/utils/response";
import HttpCode from '@server/types/HttpCode';
import createHttpError from 'http-errors';

// Define Zod schema for request parameters validation
const updateResourceParamsSchema = z.object({
  resourceId: z.string().uuid()
});

// Define Zod schema for request body validation
const updateResourceBodySchema = z.object({
  name: z.string().min(1).max(255).optional(),
  subdomain: z.string().min(1).max(255).optional(),
}).refine(data => Object.keys(data).length > 0, {
  message: "At least one field must be provided for update"
});

export async function updateResource(req: Request, res: Response, next: NextFunction): Promise<any> {
  try {
    // Validate request parameters
    const parsedParams = updateResourceParamsSchema.safeParse(req.params);
    if (!parsedParams.success) {
      return next(
        createHttpError(
          HttpCode.BAD_REQUEST,
          parsedParams.error.errors.map(e => e.message).join(', ')
        )
      );
    }

    // Validate request body
    const parsedBody = updateResourceBodySchema.safeParse(req.body);
    if (!parsedBody.success) {
      return next(
        createHttpError(
          HttpCode.BAD_REQUEST,
          parsedBody.error.errors.map(e => e.message).join(', ')
        )
      );
    }

    const { resourceId } = parsedParams.data;
    const updateData = parsedBody.data;

    // Update the resource in the database
    const updatedResource = await db.update(resources)
      .set(updateData)
      .where(eq(resources.resourceId, resourceId))
      .returning();

    if (updatedResource.length === 0) {
      return next(
        createHttpError(
          HttpCode.NOT_FOUND,
          `Resource with ID ${resourceId} not found`
        )
      );
    }

    return res.status(HttpCode.OK).send(
      response(res, {
        data: updatedResource[0],
        success: true,
        error: false,
        message: "Resource updated successfully",
        status: HttpCode.OK,
      })
    );
  } catch (error) {
    next(error);
  }
}