import { UserListResponse, UserPayload, UserResponse } from "@/types/user";

const API_URL = process.env.NEXT_PUBLIC_API_URL || "http://localhost:8080";

async function fetchWithAuth(url: string, token: string, options: RequestInit = {}) {
    const headers = {
        "Content-Type": "application/json",
        "Authorization": `Bearer ${token}`,
        ...options.headers,
    };

    const response = await fetch(`${API_URL}${url}`, {
        ...options,
        headers,
    });

    if (!response.ok) {
        const errorData = await response.json().catch(() => ({}));
        throw new Error(errorData.message || "API request failed");
    }

    // For 204 No Content
    if (response.status === 204) {
        return null;
    }

    return response.json();
}

export const userService = {
    async getUsers(token: string, page: number = 1, per_page: number = 20, soft: string = ""): Promise<UserListResponse> {
        const queryParams = new URLSearchParams({
            page: page.toString(),
            per_page: per_page.toString(),
        });
        if (soft) {
            queryParams.append("soft", soft);
        }
        return fetchWithAuth(`/api/v1/admin/users?${queryParams.toString()}`, token);
    },

    async getUser(token: string, id: number): Promise<UserResponse> {
        return fetchWithAuth(`/api/v1/admin/users/${id}`, token);
    },

    async updateUser(token: string, id: number, data: UserPayload): Promise<UserResponse> {
        return fetchWithAuth(`/api/v1/admin/users/${id}`, token, {
            method: "PUT",
            body: JSON.stringify(data),
        });
    },

    async deleteUser(token: string, id: number): Promise<void> {
        return fetchWithAuth(`/api/v1/admin/users/${id}`, token, {
            method: "DELETE",
        });
    },

    async restoreUser(token: string, id: number): Promise<UserResponse> {
        return fetchWithAuth(`/api/v1/admin/users/${id}/restore`, token, {
            method: "POST",
        });
    },
};