import { Request, Response, NextFunction } from "express";
import { z } from "zod";
import { db } from "@server/db";
import { sites } from "@server/db/schema";
import { eq, and } from "drizzle-orm";
import response from "@server/utils/response";
import HttpCode from "@server/types/HttpCode";
import createHttpError from "http-errors";
import logger from "@server/logger";
import stoi from "@server/utils/stoi";
import { fromError } from "zod-validation-error";

const getSiteSchema = z.object({
    siteId: z
        .string()
        .optional()
        .transform(stoi)
        .pipe(z.number().int().positive().optional())
        .optional(),
    niceId: z.string().optional(),
    orgId: z.string().optional(),
});

export type GetSiteResponse = {
    siteId: number;
    name: string;
    subdomain: string;
    subnet: string;
};

export async function getSite(
    req: Request,
    res: Response,
    next: NextFunction
): Promise<any> {
    try {
        const parsedParams = getSiteSchema.safeParse(req.params);
        if (!parsedParams.success) {
            return next(
                createHttpError(
                    HttpCode.BAD_REQUEST,
                    fromError(parsedParams.error).toString()
                )
            );
        }

        const { siteId, niceId, orgId } = parsedParams.data;

        let site;
        if (siteId) {
            site = await db
                .select()
                .from(sites)
                .where(eq(sites.siteId, siteId))
                .limit(1);
        } else if (niceId && orgId) {
            site = await db
                .select()
                .from(sites)
                .where(and(eq(sites.niceId, niceId), eq(sites.orgId, orgId)))
                .limit(1);
        }

        if (!site) {
            return next(createHttpError(HttpCode.NOT_FOUND, "Site not found"));
        }

        if (site.length === 0) {
            return next(
                createHttpError(
                    HttpCode.NOT_FOUND,
                    `Site with ID ${siteId} not found`
                )
            );
        }

        return response(res, {
            data: {
                siteId: site[0].siteId,
                niceId: site[0].niceId,
                name: site[0].name,
                subnet: site[0].subnet,
            },
            success: true,
            error: false,
            message: "Site retrieved successfully",
            status: HttpCode.OK,
        });
    } catch (error) {
        logger.error("Error from getSite: ", error);
        return next(
            createHttpError(HttpCode.INTERNAL_SERVER_ERROR, "An error occurred")
        );
    }
}