import { Proposal, User } from '../types';
import { getApiBaseUrl } from '../config';

export const apiService = {
  async fetchProposals(): Promise<Proposal[]> {
    const apiUrl = getApiBaseUrl();
    if (!apiUrl) return [];

    try {
      const response = await fetch(`${apiUrl}/proposals`);
      if (!response.ok) throw new Error('Network response was not ok');
      const data = await response.json();
      return Array.isArray(data) ? data : [];
    } catch (error) {
      console.error('Error fetching proposals:', error);
      return [];
    }
  },

  async saveProposal(proposal: Proposal): Promise<boolean> {
    const apiUrl = getApiBaseUrl();
    if (!apiUrl) return false;

    try {
      console.log('[API Debug] Saving proposal:', { id: proposal.id, status: proposal.status, title: proposal.title });

      const response = await fetch(`${apiUrl}/proposals`, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(proposal)
      });

      const responseData = await response.json();
      console.log('[API Debug] Save response:', responseData);

      if (!response.ok) {
        console.error('[API Debug] Save failed:', responseData);
        throw new Error('Failed to save proposal');
      }
      return true;
    } catch (error) {
      console.error('Error saving proposal:', error);
      return false;
    }
  },



  async getSettings(): Promise<any> {
    const apiUrl = getApiBaseUrl();
    if (!apiUrl) return null;

    try {
      const response = await fetch(`${apiUrl}/settings`);
      if (!response.ok) throw new Error('Network response was not ok');
      const data = await response.json();
      return data;
    } catch (error) {
      console.error('Error fetching settings:', error);
      return null;
    }
  },

  async saveSetting(key: string, value: any): Promise<boolean> {
    const apiUrl = getApiBaseUrl();
    if (!apiUrl) return false;

    try {
      const response = await fetch(`${apiUrl}/settings`, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ key, value })
      });

      if (!response.ok) throw new Error('Failed to save setting');
      return true;
    } catch (error) {
      console.error('Error saving setting:', error);
      return false;
    }
  },

  // User CRUD operations
  async fetchUsers(): Promise<User[]> {
    const apiUrl = getApiBaseUrl();
    if (!apiUrl) return [];

    try {
      const response = await fetch(`${apiUrl}/users`);
      if (!response.ok) throw new Error('Network response was not ok');
      const data = await response.json();
      return Array.isArray(data) ? data : [];
    } catch (error) {
      console.error('Error fetching users:', error);
      return [];
    }
  },

  async loginUser(email: string, password: string): Promise<User | null> {
    const apiUrl = getApiBaseUrl();
    if (!apiUrl) return null;

    try {
      const response = await fetch(`${apiUrl}/users/login`, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ email, password })
      });

      if (!response.ok) {
        const error = await response.json();
        console.error('Login failed:', error);
        return null;
      }

      const data = await response.json();
      return data.user || null;
    } catch (error) {
      console.error('Error logging in:', error);
      return null;
    }
  },

  async saveUser(user: User): Promise<boolean> {
    const apiUrl = getApiBaseUrl();
    if (!apiUrl) return false;

    try {
      const response = await fetch(`${apiUrl}/users`, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(user)
      });

      if (!response.ok) throw new Error('Failed to save user');
      return true;
    } catch (error) {
      console.error('Error saving user:', error);
      return false;
    }
  },

  async deleteUser(userId: string): Promise<boolean> {
    const apiUrl = getApiBaseUrl();
    if (!apiUrl) return false;

    try {
      const response = await fetch(`${apiUrl}/users/${userId}`, {
        method: 'DELETE'
      });

      if (!response.ok) throw new Error('Failed to delete user');
      return true;
    } catch (error) {
      console.error('Error deleting user:', error);
      return false;
    }
  }
};