import {EventPostSchema} from "../schemas/eventPostSchema";

// Service responsible for sending event POST requests to the API.
// - Validates and coerces the outgoing payload using EventPostSchema
// - Logs validation errors (if any) and the final payload sent
// - Sends the request with CSRF token (if available) and returns parsed JSON response

const API_BASE = import.meta.env.VITE_API_BASE

function getCSRFToken() {
    const name = "csrftoken";
    const match = document.cookie.match(new RegExp('(^|;)\\s*' + name + '\\s*=\\s*([^;]+)'));
    return match ? match.pop() : null;
}

export default class EventService {
    constructor(base = API_BASE) {
        this.base = base;
    }

    async createEvent(rawPayload) {
        // Validate and coerce the outgoing payload
        const parsed = EventPostSchema.parse(rawPayload); // will throw if invalid
        console.log("EventService sending payload:", JSON.stringify(rawPayload, null, 2)); // Log here
        const res = await fetch(`${this.base}/event`, {
            method: "POST",
            headers: {
                "Content-Type": "application/json",
                // X-CSRFToken if using django session auth in browser
                ...(getCSRFToken() ? {"X-CSRFToken": getCSRFToken()} : {}),
            },
            credentials: "same-origin", // change to 'include' if cross-site cookies
            body: JSON.stringify(parsed),
        });

        if (!res.ok) {
            const text = await res.text();
            const err = new Error("Failed to create event");
            err.status = res.status;
            err.body = text;
            throw err;
        }

        return res.json();
    }
}