const BASE = "/api";

async function request(path, options = {}) {
  const res = await fetch(`${BASE}${path}`, {
    headers: { "Content-Type": "application/json" },
    ...options
  });
  if (!res.ok) {
    let message = `Fehler ${res.status}`;
    try {
      const body = await res.json();
      if (body.error) message = body.error;
    } catch (_) {
      /* ignore */
    }
    throw new Error(message);
  }
  if (res.status === 204) return null;
  return res.json();
}

export const api = {
  people: {
    list: () => request("/people"),
    create: (data) => request("/people", { method: "POST", body: JSON.stringify(data) }),
    update: (id, data) =>
      request(`/people/${id}`, { method: "PUT", body: JSON.stringify(data) }),
    remove: (id) => request(`/people/${id}`, { method: "DELETE" })
  },
  projects: {
    list: () => request("/projects"),
    create: (data) => request("/projects", { method: "POST", body: JSON.stringify(data) }),
    update: (id, data) =>
      request(`/projects/${id}`, { method: "PUT", body: JSON.stringify(data) }),
    remove: (id) => request(`/projects/${id}`, { method: "DELETE" })
  },
  tasks: {
    list: () => request("/tasks"),
    create: (data) => request("/tasks", { method: "POST", body: JSON.stringify(data) }),
    update: (id, data) =>
      request(`/tasks/${id}`, { method: "PUT", body: JSON.stringify(data) }),
    remove: (id) => request(`/tasks/${id}`, { method: "DELETE" })
  },
  absences: {
    list: () => request("/absences"),
    create: (data) => request("/absences", { method: "POST", body: JSON.stringify(data) }),
    remove: (id) => request(`/absences/${id}`, { method: "DELETE" })
  },
  capacity: {
    get: (from, to) => request(`/capacity?from=${from}&to=${to}`)
  }
};