#!/usr/bin/env python3
"""
Integration Test Example for AWS Cloud Foundations Inventory Scripts

This demonstrates how to use moto for AWS service mocking in inventory script testing.
This follows the KISS principle - simple, focused tests that validate core functionality.

**Test Strategy:**
- Use moto to mock AWS services (no real AWS calls)
- Test individual functions in isolation
- Focus on core logic validation
- Demonstrate integration testing patterns

**Markers:**
- @pytest.mark.integration: Integration tests using moto
- @pytest.mark.aws_service: AWS service-specific tests
- @pytest.mark.inventory: Inventory collection tests
"""

import boto3
import pytest
from moto import mock_aws

# Test Markers
pytestmark = [pytest.mark.integration, pytest.mark.aws_service, pytest.mark.inventory]


class TestEC2IntegrationWithMoto:
    """
    Integration tests for EC2-related inventory scripts using moto.

    These tests demonstrate how to mock AWS EC2 service for testing
    inventory collection without requiring real AWS credentials.
    """

    @mock_aws
    def test_ec2_describe_instances_with_mocked_service(self):
        """
        Test EC2 instance discovery with mocked EC2 service.

        This test demonstrates:
        - Moto EC2 service mocking
        - Instance creation and discovery
        - Basic inventory collection patterns
        """
        # Create mock EC2 client
        ec2_client = boto3.client("ec2", region_name="ap-southeast-2")

        # Create test instances
        response = ec2_client.run_instances(
            ImageId="ami-12345678",
            MinCount=2,
            MaxCount=2,
            InstanceType="t2.micro",
            TagSpecifications=[
                {
                    "ResourceType": "instance",
                    "Tags": [
                        {"Key": "Environment", "Value": "test"},
                        {"Key": "Project", "Value": "inventory-testing"},
                    ],
                }
            ],
        )

        # Test instance discovery
        instances_response = ec2_client.describe_instances()
        reservations = instances_response["Reservations"]

        # Validate results
        assert len(reservations) == 1, "Should have one reservation"
        instances = reservations[0]["Instances"]
        assert len(instances) == 2, "Should have two instances"

        # Validate instance properties
        for instance in instances:
            assert instance["InstanceType"] == "t2.micro"
            assert instance["State"]["Name"] == "running"

            # Check tags
            tags = {tag["Key"]: tag["Value"] for tag in instance.get("Tags", [])}
            assert tags["Environment"] == "test"
            assert tags["Project"] == "inventory-testing"

    @mock_aws
    def test_vpc_discovery_with_moto(self):
        """
        Test VPC discovery with mocked EC2 service.

        Demonstrates VPC and subnet inventory collection patterns.
        """
        ec2_client = boto3.client("ec2", region_name="ap-southeast-6")

        # Create test VPC
        vpc_response = ec2_client.create_vpc(CidrBlock="10.0.0.0/16")
        vpc_id = vpc_response["Vpc"]["VpcId"]

        # Tag the VPC
        ec2_client.create_tags(
            Resources=[vpc_id], Tags=[{"Key": "Name", "Value": "test-vpc"}, {"Key": "Environment", "Value": "testing"}]
        )

        # Create test subnet
        subnet_response = ec2_client.create_subnet(VpcId=vpc_id, CidrBlock="10.0.1.0/24")
        subnet_id = subnet_response["Subnet"]["SubnetId"]

        # Test VPC discovery
        vpcs_response = ec2_client.describe_vpcs()
        vpcs = vpcs_response["Vpcs"]

        # Validate VPC discovery
        test_vpc = next((vpc for vpc in vpcs if vpc["VpcId"] == vpc_id), None)
        assert test_vpc is not None, "Test VPC should be discovered"
        assert test_vpc["CidrBlock"] == "10.0.0.0/16"

        # Test subnet discovery
        subnets_response = ec2_client.describe_subnets(Filters=[{"Name": "vpc-id", "Values": [vpc_id]}])
        subnets = subnets_response["Subnets"]

        assert len(subnets) == 1, "Should find one subnet"
        assert subnets[0]["SubnetId"] == subnet_id
        assert subnets[0]["CidrBlock"] == "10.0.1.0/24"


class TestOrganizationsIntegrationWithMoto:
    """
    Integration tests for AWS Organizations functionality using moto.

    These tests demonstrate testing patterns for organization structure
    discovery and policy management.
    """

    @mock_aws
    def test_organizations_basic_structure(self):
        """
        Test basic AWS Organizations structure discovery.

        Note: moto's Organizations support is limited, but this demonstrates
        the testing pattern for when more features become available.
        """
        org_client = boto3.client("organizations", region_name="ap-southeast-2")

        try:
            # Attempt to create organization (may not be fully supported in moto)
            response = org_client.create_organization(FeatureSet="ALL")

            # Test root discovery
            roots_response = org_client.list_roots()
            roots = roots_response["Roots"]

            assert len(roots) >= 1, "Should have at least one root"

        except Exception as e:
            # Expected - moto has limited Organizations support
            # This demonstrates the test structure for when support improves
            pytest.skip(f"Moto Organizations support limited: {e}")


class TestIAMIntegrationWithMoto:
    """
    Integration tests for IAM-related inventory scripts using moto.

    Demonstrates testing patterns for IAM role and policy discovery.
    """

    @mock_aws
    def test_iam_role_discovery(self):
        """
        Test IAM role discovery with mocked IAM service.

        This demonstrates testing patterns for IAM inventory collection.
        """
        iam_client = boto3.client("iam", region_name="ap-southeast-2")

        # Create test role
        import json

        assume_role_policy = {
            "Version": "2012-10-17",
            "Statement": [
                {"Effect": "Allow", "Principal": {"Service": "ec2.amazonaws.com"}, "Action": "sts:AssumeRole"}
            ],
        }

        iam_client.create_role(
            RoleName="test-inventory-role",
            AssumeRolePolicyDocument=json.dumps(assume_role_policy),
            Description="Test role for inventory testing",
            Tags=[{"Key": "Environment", "Value": "test"}, {"Key": "Purpose", "Value": "inventory-testing"}],
        )

        # Test role discovery
        roles_response = iam_client.list_roles()
        roles = roles_response["Roles"]

        # Find test role
        test_role = next((role for role in roles if role["RoleName"] == "test-inventory-role"), None)

        assert test_role is not None, "Test role should be discovered"
        assert test_role["Description"] == "Test role for inventory testing"

    @mock_aws
    def test_iam_policy_discovery(self):
        """
        Test IAM managed policy discovery patterns.
        """
        iam_client = boto3.client("iam", region_name="ap-southeast-2")

        # Create test policy
        import json

        policy_document = {
            "Version": "2012-10-17",
            "Statement": [{"Effect": "Allow", "Action": "s3:GetObject", "Resource": "arn:aws:s3:::test-bucket/*"}],
        }

        policy_response = iam_client.create_policy(
            PolicyName="test-inventory-policy",
            PolicyDocument=json.dumps(policy_document),
            Description="Test policy for inventory testing",
        )

        policy_arn = policy_response["Policy"]["Arn"]

        # Test policy discovery
        policies_response = iam_client.list_policies(Scope="Local")
        policies = policies_response["Policies"]

        # Find test policy
        test_policy = next((policy for policy in policies if policy["Arn"] == policy_arn), None)

        assert test_policy is not None, "Test policy should be discovered"
        assert test_policy["PolicyName"] == "test-inventory-policy"


class TestArgumentParsingValidation:
    """
    Unit tests for CLI argument parsing validation.

    These tests validate argument parsing logic without requiring AWS services.
    """

    def test_common_argument_patterns(self):
        """
        Test common argument parsing patterns used across inventory scripts.

        This demonstrates testing CLI argument parsing in isolation.
        """
        # Test data for common argument patterns
        test_cases = [
            {
                "args": ["--profile", "test-profile", "--verbose"],
                "expected_profile": "test-profile",
                "expected_verbose": True,
            },
            {
                "args": ["--region", "ap-southeast-6", "--output", "json"],
                "expected_region": "ap-southeast-6",
                "expected_output": "json",
            },
        ]

        # This would normally test actual argument parsing functions
        # For now, demonstrates the testing pattern
        for case in test_cases:
            # Mock argument parsing would go here
            assert isinstance(case["args"], list)
            assert len(case["args"]) >= 2


if __name__ == "__main__":
    # Allow running individual test file
    pytest.main([__file__, "-v"])
