import pytest
import json
import os

class TestUserManagement:
    """Test user management functionality."""
    
    def test_list_users(self, logged_in_client):
        """Test listing users."""
        response = logged_in_client.get('/users/')
        assert response.status_code == 200
        assert b'Usuarios del Sistema' in response.data
        # Check for existing users
        assert b'admin' in response.data
        assert b'user1' in response.data
        
    def test_create_user(self, logged_in_client, app):
        """Test creating a new user."""
        response = logged_in_client.post('/users/create', data={
            'nombre': 'Usuario de Prueba',
            'username': 'testuser',
            'email': 'test@example.com',
            'password': 'password123',
            'password_confirm': 'password123',
            'nivel': 1000,
            'idioma': 'es',
            'empresa': 'Empresa Test',
            'estado': 'activo',
            'fecha_caducidad': ''
        }, follow_redirects=True)
        
        assert response.status_code == 200
        
        # Check if user was created
        with app.app_context():
            users_path = os.path.join(app.config['STORAGE_PATH'], 'users', 'users.json')
            with open(users_path, 'r') as f:
                users = json.load(f)
                assert 'testuser' in users
                assert users['testuser']['nombre'] == 'Usuario de Prueba'
                assert users['testuser']['email'] == 'test@example.com'
                assert users['testuser']['nivel'] == 1000
                
    def test_edit_user(self, logged_in_client, app):
        """Test editing an existing user."""
        # First create a user to edit
        logged_in_client.post('/users/create', data={
            'nombre': 'Usuario para Editar',
            'username': 'edit_user',
            'email': 'edit@example.com',
            'password': 'password123',
            'password_confirm': 'password123',
            'nivel': 1000,
            'idioma': 'es',
            'empresa': 'Empresa Original',
            'estado': 'activo',
            'fecha_caducidad': ''
        }, follow_redirects=True)
        
        # Now edit the user
        response = logged_in_client.post('/users/edit/edit_user', data={
            'nombre': 'Usuario Editado',
            'email': 'edited@example.com',
            'password': '',  # Empty password means no change
            'password_confirm': '',
            'nivel': 5000,  # Changed level
            'idioma': 'en',  # Changed language
            'empresa': 'Empresa Modificada',
            'estado': 'activo',
            'fecha_caducidad': ''
        }, follow_redirects=True)
        
        assert response.status_code == 200
        
        # Verify changes
        with app.app_context():
            users_path = os.path.join(app.config['STORAGE_PATH'], 'users', 'users.json')
            with open(users_path, 'r') as f:
                users = json.load(f)
                assert 'edit_user' in users
                assert users['edit_user']['nombre'] == 'Usuario Editado'
                assert users['edit_user']['email'] == 'edited@example.com'
                assert users['edit_user']['nivel'] == 5000
                assert users['edit_user']['idioma'] == 'en'
                assert users['edit_user']['empresa'] == 'Empresa Modificada'
                
    def test_delete_user(self, logged_in_client, app):
        """Test deleting a user."""
        # First create a user to delete
        logged_in_client.post('/users/create', data={
            'nombre': 'Usuario para Eliminar',
            'username': 'delete_user',
            'email': 'delete@example.com',
            'password': 'password123',
            'password_confirm': 'password123',
            'nivel': 1000,
            'idioma': 'es',
            'empresa': 'Empresa Test',
            'estado': 'activo',
            'fecha_caducidad': ''
        }, follow_redirects=True)
        
        # Verify user was created
        with app.app_context():
            users_path = os.path.join(app.config['STORAGE_PATH'], 'users', 'users.json')
            with open(users_path, 'r') as f:
                users = json.load(f)
                assert 'delete_user' in users
        
        # Now delete the user
        response = logged_in_client.post('/users/delete/delete_user', follow_redirects=True)
        
        assert response.status_code == 200
        
        # Verify user was deleted
        with app.app_context():
            users_path = os.path.join(app.config['STORAGE_PATH'], 'users', 'users.json')
            with open(users_path, 'r') as f:
                users = json.load(f)
                assert 'delete_user' not in users
                
    def test_cannot_delete_admin(self, logged_in_client):
        """Test that admin user cannot be deleted."""
        response = logged_in_client.post('/users/delete/admin', follow_redirects=True)
        assert response.status_code == 200
        
        # Should see an error message
        assert b'No se puede eliminar' in response.data or b'no puede' in response.data