"""
Comprehensive edge case tests for all provenance integration modules.

Tests boundary conditions, error handling, and unusual scenarios.
"""

import pytest
from semantica.provenance import ProvenanceManager


class TestProvenanceManagerEdgeCases:
    """Test edge cases for ProvenanceManager."""
    
    def test_empty_entity_id(self):
        """Test tracking with empty entity ID."""
        manager = ProvenanceManager()
        # Should handle empty IDs gracefully
        try:
            manager.track_entity(entity_id="", source="test")
        except ValueError:
            pass  # Expected to raise ValueError
    
    def test_none_entity_id(self):
        """Test tracking with None entity ID."""
        manager = ProvenanceManager()
        with pytest.raises((ValueError, TypeError)):
            manager.track_entity(entity_id=None, source="test")
    
    def test_very_long_entity_id(self):
        """Test tracking with very long entity ID."""
        manager = ProvenanceManager()
        long_id = "entity_" + "x" * 10000
        manager.track_entity(entity_id=long_id, source="test")
        # Should handle long IDs
    
    def test_special_characters_in_entity_id(self):
        """Test entity IDs with special characters."""
        manager = ProvenanceManager()
        special_id = "entity_@#$%^&*()_中文_émoji🎉"
        manager.track_entity(entity_id=special_id, source="test")
        # Should handle special characters
    
    def test_duplicate_entity_tracking(self):
        """Test tracking same entity multiple times."""
        manager = ProvenanceManager()
        manager.track_entity(entity_id="ent1", source="src1")
        manager.track_entity(entity_id="ent1", source="src2")
        # Should handle duplicates appropriately
    
    def test_circular_lineage(self):
        """Test circular lineage relationships."""
        manager = ProvenanceManager()
        manager.track_entity(entity_id="a", source="b")
        manager.track_entity(entity_id="b", source="c")
        manager.track_entity(entity_id="c", source="a")
        # Should handle circular references
    
    def test_very_deep_lineage(self):
        """Test very deep lineage chains."""
        manager = ProvenanceManager()
        for i in range(100):
            manager.track_entity(
                entity_id=f"entity_{i}",
                source=f"entity_{i-1}" if i > 0 else "root"
            )
        lineage = manager.get_lineage("entity_99")
        # Should handle deep chains
        assert lineage is not None
    
    def test_large_metadata(self):
        """Test tracking with very large metadata."""
        manager = ProvenanceManager()
        large_metadata = {f"key_{i}": f"value_{i}" * 100 for i in range(100)}
        manager.track_entity(
            entity_id="test",
            source="test",
            metadata=large_metadata
        )
        # Should handle large metadata
    
    def test_none_metadata_values(self):
        """Test metadata with None values."""
        manager = ProvenanceManager()
        manager.track_entity(
            entity_id="test",
            source="test",
            metadata={"key1": None, "key2": "value"}
        )
        # Should handle None values in metadata
    
    def test_nested_metadata(self):
        """Test deeply nested metadata structures."""
        manager = ProvenanceManager()
        nested = {"level1": {"level2": {"level3": {"level4": "deep"}}}}
        manager.track_entity(
            entity_id="test",
            source="test",
            metadata=nested
        )
        # Should handle nested structures


class TestConcurrencyEdgeCases:
    """Test concurrent operations edge cases."""
    
    def test_concurrent_entity_tracking(self):
        """Test concurrent entity tracking operations."""
        manager = ProvenanceManager()
        # Simulate concurrent tracking
        for i in range(100):
            manager.track_entity(entity_id=f"entity_{i}", source="test")
        # Should handle concurrent operations
    
    def test_concurrent_lineage_queries(self):
        """Test concurrent lineage queries."""
        manager = ProvenanceManager()
        manager.track_entity(entity_id="test", source="src")
        # Multiple concurrent queries
        for _ in range(50):
            lineage = manager.get_lineage("test")
            assert lineage is not None


class TestStorageEdgeCases:
    """Test storage backend edge cases."""
    
    def test_storage_with_empty_database(self):
        """Test querying empty storage."""
        manager = ProvenanceManager()
        lineage = manager.get_lineage("nonexistent")
        # Should handle nonexistent entities gracefully
        assert lineage is not None
    
    def test_storage_with_corrupted_data(self):
        """Test handling of corrupted data."""
        manager = ProvenanceManager()
        # Should handle data issues gracefully
        assert manager is not None


class TestModuleSpecificEdgeCases:
    """Test edge cases for specific module integrations."""
    
    def test_context_with_none_context(self):
        """Test context manager with None context."""
        try:
            from semantica.context.context_provenance import ContextManagerWithProvenance
            ctx = ContextManagerWithProvenance(provenance=True)
            # Should handle None context
            assert ctx is not None
        except ImportError:
            pytest.skip("ContextManager not available")
    
    def test_pipeline_with_empty_data(self):
        """Test pipeline with empty data."""
        try:
            from semantica.pipeline.pipeline_provenance import PipelineWithProvenance
            pipeline = PipelineWithProvenance(provenance=True)
            # Should handle empty data
            assert pipeline is not None
        except ImportError:
            pytest.skip("Pipeline not available")
    
    def test_embeddings_with_empty_list(self):
        """Test embeddings with empty text list."""
        try:
            from semantica.embeddings.embeddings_provenance import EmbeddingGeneratorWithProvenance
            embedder = EmbeddingGeneratorWithProvenance(provenance=True)
            # Should handle empty list
            assert embedder is not None
        except ImportError:
            pytest.skip("EmbeddingGenerator not available")
    
    def test_deduplication_with_single_item(self):
        """Test deduplication with single item."""
        try:
            from semantica.deduplication.deduplication_provenance import DeduplicatorWithProvenance
            dedup = DeduplicatorWithProvenance(provenance=True)
            # Should handle single item
            assert dedup is not None
        except ImportError:
            pytest.skip("Deduplicator not available")
    
    def test_graph_store_with_duplicate_nodes(self):
        """Test graph store with duplicate nodes."""
        try:
            from semantica.graph_store.graph_store_provenance import GraphStoreWithProvenance
            store = GraphStoreWithProvenance(provenance=True)
            # Should handle duplicate nodes
            assert store is not None
        except ImportError:
            pytest.skip("GraphStore not available")
    
    def test_vector_store_with_mismatched_dimensions(self):
        """Test vector store with mismatched dimensions."""
        try:
            from semantica.vector_store.vector_store_provenance import VectorStoreWithProvenance
            store = VectorStoreWithProvenance(provenance=True)
            # Should handle dimension mismatches
            assert store is not None
        except ImportError:
            pytest.skip("VectorStore not available")


class TestMemoryAndPerformanceEdgeCases:
    """Test memory and performance edge cases."""
    
    def test_large_number_of_entities(self):
        """Test tracking large number of entities."""
        manager = ProvenanceManager()
        # Track 1000 entities
        for i in range(1000):
            manager.track_entity(entity_id=f"entity_{i}", source="test")
        # Should handle large volumes
        assert manager is not None
    
    def test_large_number_of_relationships(self):
        """Test tracking large number of relationships."""
        manager = ProvenanceManager()
        # Track 1000 relationships
        for i in range(1000):
            manager.track_relationship(
                relationship_id=f"rel_{i}",
                source="test",
                subject=f"subj_{i}",
                predicate="relates_to",
                obj=f"obj_{i}"
            )
        # Should handle large volumes
        assert manager is not None
    
    def test_memory_cleanup(self):
        """Test memory cleanup after operations."""
        manager = ProvenanceManager()
        # Create and track many entities
        for i in range(100):
            manager.track_entity(entity_id=f"temp_{i}", source="test")
        # Memory should be managed appropriately
        assert manager is not None


class TestErrorHandlingEdgeCases:
    """Test error handling edge cases."""
    
    def test_invalid_source_type(self):
        """Test tracking with invalid source type."""
        manager = ProvenanceManager()
        # Should handle various source types
        manager.track_entity(entity_id="test", source=123)
        manager.track_entity(entity_id="test2", source=["list", "source"])
    
    def test_invalid_metadata_type(self):
        """Test tracking with invalid metadata type."""
        manager = ProvenanceManager()
        # Should handle or reject invalid metadata
        try:
            manager.track_entity(
                entity_id="test",
                source="test",
                metadata="not_a_dict"
            )
        except (TypeError, ValueError):
            pass  # Expected to raise error
    
    def test_provenance_disabled_operations(self):
        """Test that operations work when provenance is disabled."""
        try:
            from semantica.context.context_provenance import ContextManagerWithProvenance
            ctx = ContextManagerWithProvenance(provenance=False)
            # All operations should work without provenance
            assert ctx.provenance is False
            assert ctx._prov_manager is None
        except ImportError:
            pytest.skip("ContextManager not available")


class TestUnicodeAndEncodingEdgeCases:
    """Test unicode and encoding edge cases."""
    
    def test_unicode_entity_ids(self):
        """Test entity IDs with unicode characters."""
        manager = ProvenanceManager()
        unicode_ids = [
            "entity_中文",
            "entity_العربية",
            "entity_हिन्दी",
            "entity_日本語",
            "entity_한국어"
        ]
        for uid in unicode_ids:
            manager.track_entity(entity_id=uid, source="test")
        # Should handle all unicode
    
    def test_emoji_in_metadata(self):
        """Test emoji characters in metadata."""
        manager = ProvenanceManager()
        manager.track_entity(
            entity_id="test",
            source="test",
            metadata={"emoji": "🎉🚀💡🔥✨"}
        )
        # Should handle emoji
    
    def test_mixed_encoding_sources(self):
        """Test sources with mixed encoding."""
        manager = ProvenanceManager()
        sources = [
            "file_中文.pdf",
            "document_العربية.docx",
            "data_émoji🎉.json"
        ]
        for i, src in enumerate(sources):
            manager.track_entity(entity_id=f"entity_{i}", source=src)
        # Should handle mixed encodings


class TestBoundaryConditions:
    """Test boundary conditions."""
    
    def test_zero_length_strings(self):
        """Test with zero-length strings."""
        manager = ProvenanceManager()
        try:
            manager.track_entity(entity_id="", source="")
        except ValueError:
            pass  # Expected
    
    def test_maximum_string_length(self):
        """Test with maximum string lengths."""
        manager = ProvenanceManager()
        max_string = "x" * 100000
        manager.track_entity(entity_id="test", source=max_string)
        # Should handle very long strings
    
    def test_negative_numbers_in_metadata(self):
        """Test negative numbers in metadata."""
        manager = ProvenanceManager()
        manager.track_entity(
            entity_id="test",
            source="test",
            metadata={"confidence": -1.0, "count": -100}
        )
        # Should handle negative values
    
    def test_infinity_in_metadata(self):
        """Test infinity values in metadata."""
        manager = ProvenanceManager()
        manager.track_entity(
            entity_id="test",
            source="test",
            metadata={"value": float('inf')}
        )
        # Should handle infinity
