// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
import { Module } from "@/interfaces";
import { sessionOptions } from "@/lib/session";
import { requestUser } from "@/utils/api";
import { createApprovalWorkflow, getApprovalWorkflowByFormIntaker, getApprovalWorkflows } from "@/utils/approval.workflows.be";
import { withIronSessionApiRoute } from "iron-session/next";
import type { NextApiRequest, NextApiResponse } from "next";

export default withIronSessionApiRoute(handler, sessionOptions);

interface PostRequestBody {
    examAuthor: string,
    examId: string,
    examName: string,
    examModule: Module,
}

async function handler(req: NextApiRequest, res: NextApiResponse) {
    if (req.method === "GET") return await get(req, res);
    if (req.method === "POST") return await post(req, res);
}

async function get(req: NextApiRequest, res: NextApiResponse) {
    const user = await requestUser(req, res);
    if (!user) return res.status(401).json({ ok: false });

    if (!["admin", "developer", "corporate", "mastercorporate"].includes(user.type)) {
        return res.status(403).json({ ok: false });
    }

    return res.status(200).json(await getApprovalWorkflows("active-workflows"));
}

async function post(req: NextApiRequest, res: NextApiResponse) {
    const user = await requestUser(req, res);
    if (!user) return res.status(401).json({ ok: false });

    if (!["admin", "developer", "corporate", "mastercorporate"].includes(user.type)) {
        return res.status(403).json({ ok: false });
    }

    const { examAuthor, examId, examModule } = req.body as PostRequestBody;

    if (examAuthor) {
        const configuredWorkflow = await getApprovalWorkflowByFormIntaker(examAuthor);
        if(configuredWorkflow) {
            configuredWorkflow.modules.push(examModule);
            configuredWorkflow.name = `${examId}`;
            configuredWorkflow.examId = examId;
            configuredWorkflow.startDate = Date.now();
    
            return res.status(201).json(await createApprovalWorkflow("active-workflows", configuredWorkflow));
        } else {
            return res.status(404).json("No configured workflow found for examAuthor.");
        }

    }


}