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

const listOrgsSchema = 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 listOrgs(req: Request, res: Response, next: NextFunction): Promise<any> {
    try {
        const parsedQuery = listOrgsSchema.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;

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

        // Use the userOrgs passed from the middleware
        const userOrgIds = req.userOrgIds;

        if (!userOrgIds || userOrgIds.length === 0) {
            return res.status(HttpCode.OK).send(
                response(res, {
                    data: {
                        organizations: [],
                        pagination: {
                            total: 0,
                            limit,
                            offset,
                        },
                    },
                    success: true,
                    error: false,
                    message: "No organizations found for the user",
                    status: HttpCode.OK,
                })
            );
        }

        const organizations = await db.select()
            .from(orgs)
            .where(inArray(orgs.orgId, userOrgIds))
            .limit(limit)
            .offset(offset);

        const totalCountResult = await db.select({ count: sql<number>`cast(count(*) as integer)` })
            .from(orgs)
            .where(inArray(orgs.orgId, userOrgIds));
        const totalCount = totalCountResult[0].count;

        // // Add the user's role for each organization
        // const organizationsWithRoles = organizations.map(org => ({
        //   ...org,
        //   userRole: req.userOrgRoleIds[org.orgId],
        // }));

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