//! Integration Tests: Complete Substrate Workflow
//!
//! These tests verify the end-to-end functionality of the cognitive substrate,
//! from pattern storage through querying and retrieval.

#[cfg(test)]
mod substrate_tests {
    // Note: These imports will be available once crates are implemented
    // use exo_core::{Pattern, Query, SubstrateConfig};
    // use exo_backend_classical::ClassicalBackend;
    // use exo_manifold::ManifoldEngine;

    /// Test: Complete substrate workflow
    ///
    /// Steps:
    /// 1. Initialize substrate with classical backend
    /// 2. Store multiple patterns with embeddings
    /// 3. Query with similarity search
    /// 4. Verify results match expected patterns
    #[tokio::test]
    #[ignore] // Remove this when crates are implemented
    async fn test_substrate_store_and_retrieve() {
        // TODO: Implement once exo-core and exo-backend-classical exist

        // Expected API usage:
        // let config = SubstrateConfig::default();
        // let backend = ClassicalBackend::new(config).unwrap();
        // let substrate = SubstrateInstance::new(backend);

        // // Store patterns
        // let pattern1 = Pattern {
        //     embedding: vec![1.0, 0.0, 0.0, 0.0],
        //     metadata: Metadata::new(),
        //     timestamp: SubstrateTime::now(),
        //     antecedents: vec![],
        // };
        //
        // let id1 = substrate.store(pattern1.clone()).await.unwrap();
        //
        // let pattern2 = Pattern {
        //     embedding: vec![0.9, 0.1, 0.0, 0.0],
        //     metadata: Metadata::new(),
        //     timestamp: SubstrateTime::now(),
        //     antecedents: vec![],
        // };
        //
        // let id2 = substrate.store(pattern2.clone()).await.unwrap();
        //
        // // Query
        // let query = Query::from_embedding(vec![1.0, 0.0, 0.0, 0.0]);
        // let results = substrate.search(query, 2).await.unwrap();
        //
        // // Verify
        // assert_eq!(results.len(), 2);
        // assert_eq!(results[0].id, id1); // Closest match
        // assert!(results[0].score > results[1].score);

        panic!("Implement this test once exo-core crate exists");
    }

    /// Test: Manifold deformation (continuous learning)
    ///
    /// Verifies that the learned manifold can be deformed to incorporate
    /// new patterns without explicit insert operations.
    #[tokio::test]
    #[ignore]
    async fn test_manifold_deformation() {
        // TODO: Implement once exo-manifold exists

        // Expected API:
        // let manifold = ManifoldEngine::new(config);
        //
        // // Initial query should find nothing
        // let query = Tensor::from_floats(&[0.5, 0.5, 0.0, 0.0]);
        // let before = manifold.retrieve(query.clone(), 1);
        // assert!(before.is_empty());
        //
        // // Deform manifold with new pattern
        // let pattern = Pattern { embedding: vec![0.5, 0.5, 0.0, 0.0], ... };
        // manifold.deform(pattern, salience=1.0);
        //
        // // Now query should find the pattern
        // let after = manifold.retrieve(query, 1);
        // assert_eq!(after.len(), 1);

        panic!("Implement this test once exo-manifold crate exists");
    }

    /// Test: Strategic forgetting
    ///
    /// Verifies that low-salience patterns decay over time.
    #[tokio::test]
    #[ignore]
    async fn test_strategic_forgetting() {
        // TODO: Implement once exo-manifold exists

        // Expected behavior:
        // 1. Store high-salience and low-salience patterns
        // 2. Trigger forgetting
        // 3. Verify low-salience patterns are forgotten
        // 4. Verify high-salience patterns remain

        panic!("Implement this test once exo-manifold crate exists");
    }

    /// Test: Batch operations and performance
    ///
    /// Verifies substrate can handle bulk operations efficiently.
    #[tokio::test]
    #[ignore]
    async fn test_bulk_operations() {
        // TODO: Implement performance test

        // Expected:
        // - Store 10,000 patterns
        // - Batch query 1,000 times
        // - Verify latency < 10ms per query (classical backend)

        panic!("Implement this test once exo-core crate exists");
    }

    /// Test: Filter-based queries
    ///
    /// Verifies metadata filtering during similarity search.
    #[tokio::test]
    #[ignore]
    async fn test_filtered_search() {
        // TODO: Implement once exo-core exists

        // Expected:
        // - Store patterns with different metadata tags
        // - Query with metadata filter
        // - Verify only matching patterns returned

        panic!("Implement this test once exo-core crate exists");
    }
}