fosrl.pangolin/server/routers/user/listUsers.ts

import { Request, Response, NextFunction } from 'express';
import { z } from 'zod';
import { db } from '@server/db';
import { roles, userOrgs, users } from '@server/db/schema';
import response from "@server/utils/response";
import HttpCode from '@server/types/HttpCode';
import createHttpError from 'http-errors';
import { sql } from 'drizzle-orm';
import { ActionsEnum, checkUserActionPermission } from '@server/auth/actions';
import logger from '@server/logger';

const listUsersParamsSchema = z.object({
    orgId: z.string().optional().transform(Number).pipe(z.number().int().positive()),
});

const listUsersSchema = z.object({
    limit: z.string().optional().transform(Number).pipe(z.number().int().positive().default(10)),
    offset: z.string().optional().transform(Number).pipe(z.number().int().nonnegative().default(0)),
});

export async function listUsers(req: Request, res: Response, next: NextFunction): Promise<any> {
    try {
        const parsedQuery = listUsersSchema.safeParse(req.query);
        if (!parsedQuery.success) {
            return next(
                createHttpError(
                    HttpCode.BAD_REQUEST,
                    parsedQuery.error.errors.map(e => e.message).join(', ')
                )
            );
        }
        const { limit, offset } = parsedQuery.data;

        const parsedParams = listUsersParamsSchema.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 users
        const hasPermission = await checkUserActionPermission(ActionsEnum.listUsers, req);
        if (!hasPermission) {
            return next(createHttpError(HttpCode.FORBIDDEN, 'User does not have permission to perform this action'));
        }

        // Query to join users, userOrgs, and roles tables
        const usersWithRoles = await db
            .select({
                id: users.id,
                email: users.email,
                emailVerified: users.emailVerified,
                dateCreated: users.dateCreated,
                orgId: userOrgs.orgId,
                roleId: userOrgs.roleId,
                roleName: roles.name,
            })
            .from(users)
            .leftJoin(userOrgs, sql`${users.id} = ${userOrgs.userId}`)
            .leftJoin(roles, sql`${userOrgs.roleId} = ${roles.roleId}`)
            .where(sql`${userOrgs.orgId} = ${orgId}`)
            .limit(limit)
            .offset(offset);

        // Count total users
        const [{ count }] = await db
            .select({ count: sql<number>`count(*)` })
            .from(users);

        return response(res, {
            data: {
                users: usersWithRoles,
                pagination: {
                    total: count,
                    limit,
                    offset,
                },
            },
            success: true,
            error: false,
            message: "Users retrieved successfully",
            status: HttpCode.OK,
        });
    } catch (error) {
        logger.error(error);
        return next(createHttpError(HttpCode.INTERNAL_SERVER_ERROR, "An error occurred..."));
    }
}