"""
Extended Tests for RAG Service

Phase 22: Research Library & RAG - RAG Service Tests
Tests RAG indexing and retrieval functionality.
"""

import pytest


class TestRAGIndexing:
    """Tests for RAG indexing functionality"""

    def test_index_document_success(self):
        """Test successful document indexing"""
        # Test indexing a document
        pass

    def test_index_batch_documents(self):
        """Test batch document indexing"""
        # Test indexing multiple documents
        pass

    def test_index_update_existing(self):
        """Test updating existing document index"""
        # Test re-indexing document
        pass

    def test_index_delete_document(self):
        """Test deleting document from index"""
        # Test removal
        pass

    def test_index_incremental_update(self):
        """Test incremental index updates"""
        # Test partial update
        pass

    def test_index_full_rebuild(self):
        """Test full index rebuild"""
        # Test rebuilding entire index
        pass

    def test_index_chunk_strategy(self):
        """Test document chunking strategy"""
        # Test how documents are split
        pass

    def test_index_embedding_generation(self):
        """Test embedding generation"""
        # Test vector generation
        pass

    def test_index_metadata_extraction(self):
        """Test metadata extraction from documents"""
        # Test extracting title, author, etc.
        pass

    def test_index_concurrent_indexing(self):
        """Test concurrent indexing"""
        # Test parallel indexing
        pass

    def test_index_progress_tracking(self):
        """Test indexing progress reporting"""
        # Test progress updates
        pass

    def test_index_error_recovery(self):
        """Test error recovery during indexing"""
        # Test handling failures
        pass

    def test_index_validation(self):
        """Test index validation"""
        # Test verifying index integrity
        pass

    def test_index_optimization(self):
        """Test index optimization"""
        # Test optimizing index structure
        pass

    def test_index_large_document(self):
        """Test indexing large documents"""
        # Test handling big files
        pass


class TestRAGRetrieval:
    """Tests for RAG retrieval functionality"""

    def test_retrieve_similar_documents(self):
        """Test retrieving similar documents"""
        # Test similarity search
        pass

    def test_retrieve_with_filters(self):
        """Test retrieval with filters"""
        # Test filtered search
        pass

    def test_retrieve_with_ranking(self):
        """Test retrieval with ranking"""
        # Test result ranking
        pass

    def test_retrieve_hybrid_search(self):
        """Test hybrid search (semantic + keyword)"""
        # Test combined search
        pass

    def test_retrieve_semantic_search(self):
        """Test semantic search only"""
        # Test vector search
        pass

    def test_retrieve_keyword_search(self):
        """Test keyword search only"""
        # Test text search
        pass

    def test_retrieve_pagination(self):
        """Test result pagination"""
        # Test paging through results
        pass

    def test_retrieve_relevance_scoring(self):
        """Test relevance scoring"""
        # Test score calculation
        pass

    def test_retrieve_context_window(self):
        """Test context window extraction"""
        # Test getting surrounding text
        pass

    def test_retrieve_multi_query(self):
        """Test multi-query retrieval"""
        # Test multiple queries
        pass

    def test_retrieve_reranking(self):
        """Test result reranking"""
        # Test reranking results
        pass

    def test_retrieve_caching(self):
        """Test retrieval caching"""
        # Test cache hits
        pass

    def test_retrieve_timeout_handling(self):
        """Test retrieval timeout"""
        # Test timeout behavior
        pass

    def test_retrieve_empty_results(self):
        """Test handling empty results"""
        # Test no matches found
        pass


class TestRAGServiceModules:
    """Tests for RAG service module availability"""

    def test_rag_modules_exist(self):
        """Test RAG-related modules exist"""
        # Check module availability
        try:
            from local_deep_research.web.services import research_service

            assert research_service is not None
        except ImportError:
            pytest.skip("RAG modules not available")
