const API_URL = typeof window !== 'undefined'
  ? (process.env.NEXT_PUBLIC_API_URL || 'http://localhost:3001')
  : (process.env.API_URL || 'http://localhost:3001');

export interface Worker {
  id: string;
  name: string;
  presenceDays: number;
}

export interface Settings {
  id: number;
  totalPoints: number;
  totalDays: number;
}

export const workersAPI = {
  async getAll(): Promise<Worker[]> {
    const response = await fetch(`${API_URL}/workers`);
    if (!response.ok) throw new Error('Failed to fetch workers');
    return response.json();
  },

  async create(worker: Omit<Worker, 'id'>): Promise<Worker> {
    const response = await fetch(`${API_URL}/workers`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(worker),
    });
    if (!response.ok) throw new Error('Failed to create worker');
    return response.json();
  },

  async update(id: string, worker: Partial<Worker>): Promise<Worker> {
    const response = await fetch(`${API_URL}/workers/${id}`, {
      method: 'PATCH',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(worker),
    });
    if (!response.ok) throw new Error('Failed to update worker');
    return response.json();
  },

  async delete(id: string): Promise<void> {
    const response = await fetch(`${API_URL}/workers/${id}`, {
      method: 'DELETE',
    });
    if (!response.ok) throw new Error('Failed to delete worker');
  },

  async resetAllPresences(): Promise<void> {
    const workers = await this.getAll();
    await Promise.all(
      workers.map(worker =>
        this.update(worker.id, { presenceDays: 0 })
      )
    );
  },
};

export const settingsAPI = {
  async get(): Promise<Settings> {
    const response = await fetch(`${API_URL}/settings`);
    if (!response.ok) throw new Error('Failed to fetch settings');
    return response.json();
  },

  async update(settings: Partial<Settings>): Promise<Settings> {
    const response = await fetch(`${API_URL}/settings`, {
      method: 'PATCH',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(settings),
    });
    if (!response.ok) throw new Error('Failed to update settings');
    return response.json();
  },
};