import { Request, Response, NextFunction } from 'express';
import { z } from 'zod';
import { db } from '@server/db';
import { roles, userSites, sites, roleSites } from '@server/db/schema';
import response from "@server/utils/response";
import HttpCode from '@server/types/HttpCode';
import createHttpError from 'http-errors';
import fetch from 'node-fetch';
import { ActionsEnum, checkUserActionPermission } from '@server/auth/actions';
import logger from '@server/logger';
import { eq, and } from 'drizzle-orm';
import { getUniqueName } from '@server/db/names';

const API_BASE_URL = "http://localhost:3000";

const createSiteParamsSchema = z.object({
    orgId: z.string()
});

// Define Zod schema for request body validation
const createSiteSchema = z.object({
    name: z.string().min(1).max(255),
    subdomain: z.string().min(1).max(255).optional(),
    pubKey: z.string().optional(),
    subnet: z.string().optional(),
});

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

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

        const { name, subdomain, pubKey, subnet } = parsedBody.data;

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

        const { orgId } = parsedParams.data;

        // Check if the user has permission to list sites
        const hasPermission = await checkUserActionPermission(ActionsEnum.createSite, req);
        if (!hasPermission) {
            return next(createHttpError(HttpCode.FORBIDDEN, 'User does not have permission perform this action'));
        }

        if (!req.userOrgRoleId) {
            return next(createHttpError(HttpCode.FORBIDDEN, 'User does not have a role'));
        }

        const niceId = await getUniqueName(orgId);

        // TODO: pick a subnet

        // Create new site in the database
        const [newSite] = await db.insert(sites).values({
            orgId,
            name,
            niceId,
            pubKey,
            subnet,
        }).returning();
        // find the superuser roleId and also add the resource to the superuser role
        const superuserRole = await db.select()
        .from(roles)
        .where(and(eq(roles.isSuperuserRole, true), eq(roles.orgId, orgId)))
        .limit(1);

        if (superuserRole.length === 0) {
            return next(
                createHttpError(
                    HttpCode.NOT_FOUND,
                    `Superuser role not found`
                )
            );
        }

        await db.insert(roleSites).values({
            roleId: superuserRole[0].roleId,
            siteId: newSite.siteId,
        });

        if (req.userOrgRoleId != superuserRole[0].roleId) {
            // make sure the user can access the site
            db.insert(userSites).values({
                userId: req.user?.userId!,
                siteId: newSite.siteId,
            });
        }

        return response(res, {
            data: {
                name: newSite.name,
                niceId: newSite.niceId,
                siteId: newSite.siteId,
                orgId: newSite.orgId,
                // subdomain: newSite.subdomain,
                // subnet: newSite.subnet,
            },
            success: true,
            error: false,
            message: "Site created successfully",
            status: HttpCode.CREATED,
        });
    } catch (error) {
        throw error;
        return next(createHttpError(HttpCode.INTERNAL_SERVER_ERROR, "An error occurred..."));
    }
}


async function addPeer(peer: string) {
    try {
        const response = await fetch(`${API_BASE_URL}/peer`, {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
            },
            body: JSON.stringify(peer),
        });

        if (!response.ok) {
            throw new Error(`HTTP error! status: ${response.status}`);
        }

        const data: any = await response.json();
        logger.info('Peer added successfully:', data.status);
        return data;
    } catch (error: any) {
        throw error;
    }
}