import { FastifyRequest, FastifyReply, FastifyInstance } from 'fastify';
import { publicLinkService } from '../../modules/publiclinks.service';
import dayjs from 'dayjs'; // Falls nicht installiert: npm install dayjs

export default async function publiclinksNonAuthenticatedRoutes(server: FastifyInstance) {
    server.get("/workflows/context/:token", async (req, reply) => {
        const { token } = req.params as { token: string };
        const pin = req.headers['x-public-pin'] as string | undefined;

        try {
            const context = await publicLinkService.getLinkContext(server, token, pin);
            return reply.send(context);
        } catch (error: any) {
            if (error.message === "Link_NotFound") return reply.code(404).send({ error: "Link nicht gefunden" });
            if (error.message === "Pin_Required") return reply.code(401).send({ error: "PIN erforderlich", requirePin: true });
            if (error.message === "Pin_Invalid") return reply.code(403).send({ error: "PIN falsch", requirePin: true });

            server.log.error(error);
            return reply.code(500).send({ error: "Interner Server Fehler" });
        }
    });

    server.post("/workflows/submit/:token", async (req, reply) => {
        const { token } = req.params as { token: string };
        const pin = req.headers['x-public-pin'] as string | undefined;

        // Payload vom Frontend (enthält nun 'quantity' statt 'startDate/endDate')
        const body = req.body as any;

        try {
            /**
             * TRANSFORMATION
             * Wenn das Backend weiterhin Zeiträume erwartet, bauen wir diese hier:
             * Wir nehmen 'jetzt' als Ende und rechnen die 'quantity' (Stunden) zurück.
             */
            const quantity = parseFloat(body.quantity) || 0;
            const payload = {
                ...body,
                // Wir generieren Start/Ende, damit der Service kompatibel bleibt
                endDate: new Date(),
                startDate: dayjs().subtract(quantity, 'hour').toDate()
            };

            // Service aufrufen
            const result = await publicLinkService.submitFormData(server, token, payload, pin);

            return reply.code(201).send(result);

        } catch (error: any) {
            server.log.error(error);

            if (error.message === "Link_NotFound") return reply.code(404).send({ error: "Link ungültig" });
            if (error.message === "Pin_Required") return reply.code(401).send({ error: "PIN erforderlich" });
            if (error.message === "Pin_Invalid") return reply.code(403).send({ error: "PIN ist falsch" });
            if (error.message === "Profile_Missing") return reply.code(400).send({ error: "Profil fehlt" });

            return reply.code(500).send({
                error: "Fehler beim Speichern",
                details: error.message
            });
        }
    });
}