const API_BASE_URL =
    import.meta.env.VITE_API_BASE_URL || "http://localhost:8080/api";

async function request(path, options = {}) {
    const response = await fetch(`${API_BASE_URL}${path}`, {
        headers: {
            "Content-Type": "application/json",
            ...(options.headers || {}),
        },
        ...options,
    });

    if (!response.ok) {
        let message = `Request failed with status ${response.status}`;

        try {
            const data = await response.json();
            message = data.message || message;
        } catch {
            try {
                const text = await response.text();
                if (text) {
                    message = text;
                }
            } catch {
                // ignore
            }
        }

        throw new Error(message);
    }

    if (response.status === 204) {
        return null;
    }

    return response.json();
}

export function getHealth() {
    return request("/health");
}

export function getDashboardStats() {
    return request("/dashboard");
}

export function getUsers() {
    return request("/users");
}

export function getApprovers() {
    return request("/approvers");
}

export function getEquipment() {
    return request("/equipment");
}

export function getRooms() {
    return request("/rooms");
}

export function searchRooms(payload) {
    return request("/rooms/search", {
        method: "POST",
        body: JSON.stringify(payload),
    });
}

export function createReservation(payload) {
    return request("/reservations", {
        method: "POST",
        body: JSON.stringify(payload),
    });
}

export function loginUser(payload) {
    return request("/auth/login", {
        method: "POST",
        body: JSON.stringify(payload),
    });
}

export function registerUser(payload) {
    return request("/auth/register", {
        method: "POST",
        body: JSON.stringify(payload),
    });
}

export function getReservation(id) {
    return request(`/reservations/${id}`);
}

export function getPendingReservations() {
    return request("/reservations/pending");
}

export function approveReservation(payload) {
    return request("/approvals", {
        method: "POST",
        body: JSON.stringify(payload),
    });
}

export function getRoomUtilizationReport() {
    return request("/reports/room-utilization");
}

export function getEquipmentDemandReport() {
    return request("/reports/equipment-demand");
}