import { Request, Response, NextFunction } from "express";
import { z } from "zod";
import { db, resourceMtlsCertificates, resources } from "@server/db";
import { asc, eq } from "drizzle-orm";
import response from "@server/lib/response";
import HttpCode from "@server/types/HttpCode";
import createHttpError from "http-errors";
import logger from "@server/logger";
import { fromError } from "zod-validation-error";
import { OpenAPITags, registry } from "@server/openApi";

const listResourceMtlsCertificatesParamsSchema = z.strictObject({
    resourceId: z.coerce.number().int().positive()
});

function queryResourceMtlsCertificates(resourceId: number) {
    return db
        .select({
            mtlsCertificateId: resourceMtlsCertificates.mtlsCertificateId,
            resourceId: resourceMtlsCertificates.resourceId,
            name: resourceMtlsCertificates.name,
            subject: resourceMtlsCertificates.subject,
            issuer: resourceMtlsCertificates.issuer,
            serialNumber: resourceMtlsCertificates.serialNumber,
            fingerprint: resourceMtlsCertificates.fingerprint,
            notBefore: resourceMtlsCertificates.notBefore,
            notAfter: resourceMtlsCertificates.notAfter,
            createdAt: resourceMtlsCertificates.createdAt
        })
        .from(resourceMtlsCertificates)
        .where(eq(resourceMtlsCertificates.resourceId, resourceId))
        .orderBy(asc(resourceMtlsCertificates.mtlsCertificateId));
}

export type ListResourceMtlsCertificatesResponse = {
    certificates: Awaited<ReturnType<typeof queryResourceMtlsCertificates>>;
};

const description = "List the trusted CA certificates for a resource's mTLS.";

registry.registerPath({
    method: "get",
    path: "/resource/{resourceId}/mtls/certificates",
    description,
    tags: [OpenAPITags.PublicResourceLegacy],
    request: {
        params: listResourceMtlsCertificatesParamsSchema
    },
    responses: {}
});

registry.registerPath({
    method: "get",
    path: "/public-resource/{resourceId}/mtls/certificates",
    description,
    tags: [OpenAPITags.PublicResource],
    request: {
        params: listResourceMtlsCertificatesParamsSchema
    },
    responses: {}
});

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

        const [resource] = await db
            .select({ resourceId: resources.resourceId })
            .from(resources)
            .where(eq(resources.resourceId, resourceId))
            .limit(1);

        if (!resource) {
            return next(
                createHttpError(
                    HttpCode.NOT_FOUND,
                    `Resource with ID ${resourceId} not found`
                )
            );
        }

        const certificates = await queryResourceMtlsCertificates(resourceId);

        return response<ListResourceMtlsCertificatesResponse>(res, {
            data: { certificates },
            success: true,
            error: false,
            message: "CA certificates retrieved successfully",
            status: HttpCode.OK
        });
    } catch (error) {
        logger.error(error);
        return next(
            createHttpError(HttpCode.INTERNAL_SERVER_ERROR, "An error occurred")
        );
    }
}