import { createReviewStorage } from "./services/review-storage.js";
import { handleReview } from "./routes/reviews.js";
import { createContactService } from "./services/contact-service.js";
import { createContactEmailService } from "./services/contact-email.js";
import { handleContact } from "./routes/contact.js";
import { createServer } from "node:http";
import { fileURLToPath, pathToFileURL } from "node:url";
import { packages } from "../shared/packages.js";
import {
    BookingError,
    createBookingService,
} from "./services/booking-service.js";
import { createCsvStorage } from "./services/csv-storage.js";
import { createEmailService } from "./services/email-service.js";
import { handleBooking, json } from "./routes/bookings.js";
import { handleContactForm } from "./routes/contact-form.js";
import { createContactFormService } from "./services/contact-form-service.js";
import { createContactFormStorage } from "./services/contact-form-storage.js";
import { createContactFormEmailService } from "./services/contact-form-email.js";

export function createApp({
    catalog = packages,
    storage = createCsvStorage(
        fileURLToPath(new URL("./data/bookings.csv", import.meta.url)),
    ),
    reviewStorage = createReviewStorage(
        fileURLToPath(new URL("./data/reviews.csv", import.meta.url)),
    ),
    details,
    sendConfirmation,
    sendContact,
    contactFormStorage = createContactFormStorage(
        fileURLToPath(new URL("./data/contact-requests.csv", import.meta.url)),
    ),
    sendContactForm,
    advisorContactStorage = createContactFormStorage(
        fileURLToPath(new URL("./data/advisor-contacts.csv", import.meta.url)),
        [
            "createdAt",
            "email",
            "advisorId",
            "reason",
            "simulationAccepted",
            "consent",
        ],
    ),
} = {}) {
    const ids = new Set();
    for (const entry of catalog) {
        if (
            !entry ||
            typeof entry.id !== "string" ||
            !/^[a-z0-9]+(?:-[a-z0-9]+)*$/.test(entry.id) ||
            entry.id.length > 80 ||
            ids.has(entry.id) ||
            typeof entry.name !== "string" ||
            !entry.name.trim() ||
            typeof entry.summary !== "string" ||
            !entry.summary.trim()
        ) {
            throw new Error(
                "Paketdaten erfüllen den Vertrag in src/shared/packages.js nicht.",
            );
        }
        ids.add(entry.id);
    }
    const service = createBookingService({
        storage,
        details,
        packages: catalog,
        sendConfirmation: sendConfirmation ?? createEmailService(),
    });
    const contact = createContactService({
        storage,
        requestStorage: advisorContactStorage,
        sendContact: sendContact ?? createContactEmailService(),
    });
    // Registriert den separaten Kontaktformular-Service mit eigener CSV und Mailpit-Versand.
    const contactForm = createContactFormService({
        storage: contactFormStorage,
        sendContactForm: sendContactForm ?? createContactFormEmailService(),
    });
    return createServer(async (request, response) => {
        const path = new URL(request.url, "http://localhost").pathname;
        if (path === "/api/reviews") {
            return handleReview(request, response, storage, reviewStorage);
        }
        // Leitet die Ernährungsseite an ihren eigenen Kontaktformular-Endpunkt.
        if (path === "/api/nutrition-contact") {
            return handleContactForm(request, response, contactForm);
        }
        if (path === "/api/contact" || path === "/api/contact/validate") {
            return handleContact(
                request,
                response,
                contact,
                path.endsWith("/validate"),
            );
        }
        if (path === "/api/angebote" && request.method === "GET") {
            return json(response, 200, {
                packages: catalog.map(({ id, name, summary }) => ({
                    id,
                    name,
                    summary,
                })),
            });
        }
        if (path === "/api/packages" && request.method === "GET") {
            return json(
                response,
                200,
                catalog.map(({ name, summary, ...entry }) => ({
                    ...entry,
                    title: name,
                    description: summary,
                })),
            );
        }
        if (path.startsWith("/api/packages/") && request.method === "GET") {
            try {
                return json(
                    response,
                    200,
                    service.getPackage(path.slice("/api/packages/".length)),
                );
            } catch (error) {
                if (!(error instanceof BookingError)) throw error;
                return json(response, error.status, {
                    error: {
                        code: error.code,
                        message: error.message,
                        fields: error.fields,
                    },
                });
            }
        }
        if (path === "/api/bookings" || path === "/api/bookings/preview") {
            if (request.method !== "POST") {
                response.setHeader("Allow", "POST");
                return json(response, 405, {
                    error: {
                        code: "METHOD_NOT_ALLOWED",
                        message: "Bitte POST verwenden.",
                    },
                });
            }
            return handleBooking(request, response, service, {
                preview: path.endsWith("/preview"),
            });
        }
        // Ausschließlich API; keine Auslieferung von CSV oder Serverdateien.
        return json(response, 404, {
            error: { code: "NOT_FOUND", message: "Adresse nicht gefunden." },
        });
    });
}

if (
    process.argv[1] &&
    import.meta.url === pathToFileURL(process.argv[1]).href
) {
    const port = Number(process.env.PORT || 3000);
    const server = createApp();
    server.listen(port, process.env.HOST || "127.0.0.1", () => {
        console.log(`Buchungs-API auf Port ${port}`);
    });
}