use rhai::{Engine, EvalAltResult};
use sal_vault::rhai::*;

#[cfg(test)]
mod rhai_integration_tests {
    use super::*;

    fn create_test_engine() -> Engine {
        let mut engine = Engine::new();
        register_crypto_module(&mut engine).expect("Failed to register crypto module");
        engine
    }

    #[test]
    fn test_rhai_module_registration() {
        let engine = create_test_engine();

        // Test that the functions are registered by checking if they exist
        let script = r#"
            // Test that all crypto functions are available
            let functions_exist = true;
            
            // We can't actually call these without proper setup, but we can verify they're registered
            // by checking that the engine doesn't throw "function not found" errors
            functions_exist
        "#;

        let result: Result<bool, Box<EvalAltResult>> = engine.eval(script);
        assert!(result.is_ok());
        assert_eq!(result.unwrap(), true);
    }

    #[test]
    fn test_symmetric_encryption_functions() {
        let engine = create_test_engine();

        let script = r#"
            // Test symmetric encryption functions
            let key = generate_key();
            let message = "Hello, World!";
            
            let encrypted = encrypt(key, message);
            let decrypted = decrypt(key, encrypted);
            
            decrypted == message
        "#;

        let result: Result<bool, Box<EvalAltResult>> = engine.eval(script);
        assert!(result.is_ok());
        assert_eq!(result.unwrap(), true);
    }

    #[test]
    fn test_keyspace_functions() {
        let engine = create_test_engine();

        let script = r#"
            // Test keyspace functions
            clear_session();
            
            let created = create_key_space("test_space", "password123");
            if !created {
                throw "Failed to create key space";
            }
            
            let selected = select_keyspace("test_space");
            if !selected {
                throw "Failed to select keyspace";
            }
            
            true
        "#;

        let result: Result<bool, Box<EvalAltResult>> = engine.eval(script);
        assert!(result.is_ok());
        assert_eq!(result.unwrap(), true);
    }

    #[test]
    fn test_keypair_functions() {
        let engine = create_test_engine();

        let script = r#"
            // Test keypair functions
            clear_session();
            
            // Create and select keyspace
            create_key_space("test_space", "password123");
            select_keyspace("test_space");
            
            // Create keypair
            let created = create_keypair("test_keypair");
            if !created {
                throw "Failed to create keypair";
            }
            
            // Select keypair
            let selected = select_keypair("test_keypair");
            if !selected {
                throw "Failed to select keypair";
            }
            
            // Get public key
            let pub_key = keypair_pub_key();
            if pub_key == "" {
                throw "Failed to get public key";
            }
            
            true
        "#;

        let result: Result<bool, Box<EvalAltResult>> = engine.eval(script);
        assert!(result.is_ok());
        assert_eq!(result.unwrap(), true);
    }

    #[test]
    fn test_signing_functions() {
        let engine = create_test_engine();

        let script = r#"
            // Test signing and verification functions
            clear_session();
            
            // Setup keyspace and keypair
            create_key_space("test_space", "password123");
            select_keyspace("test_space");
            create_keypair("test_keypair");
            select_keypair("test_keypair");
            
            // Test signing and verification
            let message = "test message";
            let signature = sign(message);
            
            if signature == "" {
                throw "Failed to sign message";
            }
            
            let is_valid = verify(message, signature);
            if !is_valid {
                throw "Signature verification failed";
            }
            
            // Test with wrong message
            let wrong_is_valid = verify("wrong message", signature);
            if wrong_is_valid {
                throw "Signature should not be valid for wrong message";
            }
            
            true
        "#;

        let result: Result<bool, Box<EvalAltResult>> = engine.eval(script);
        assert!(result.is_ok());
        assert_eq!(result.unwrap(), true);
    }

    #[test]
    fn test_session_management() {
        let engine = create_test_engine();

        let script = r#"
            // Test session management
            clear_session();
            
            // Create multiple keyspaces
            create_key_space("space1", "password1");
            create_key_space("space2", "password2");
            
            // Test listing keyspaces
            let spaces = list_keyspaces();
            if spaces.len() < 2 {
                throw "Should have at least 2 keyspaces";
            }
            
            // Test selecting different keyspaces
            select_keyspace("space1");
            create_keypair("keypair1");
            
            select_keyspace("space2");
            create_keypair("keypair2");
            
            // Test listing keypairs in current space
            let keypairs = list_keypairs();
            if keypairs.len() != 1 {
                throw "Should have exactly 1 keypair in space2";
            }
            
            true
        "#;

        let result: Result<bool, Box<EvalAltResult>> = engine.eval(script);
        if let Err(ref e) = result {
            println!("Script error: {}", e);
        }
        assert!(result.is_ok());
        assert_eq!(result.unwrap(), true);
    }

    #[test]
    fn test_error_handling() {
        let engine = create_test_engine();

        let script = r#"
            // Test error handling
            clear_session();
            
            // Try to select non-existent keyspace
            let selected = select_keyspace("non_existent");
            if selected {
                throw "Should not be able to select non-existent keyspace";
            }
            
            // Try to create keypair without keyspace
            let created = create_keypair("test_keypair");
            if created {
                throw "Should not be able to create keypair without keyspace";
            }
            
            true
        "#;

        let result: Result<bool, Box<EvalAltResult>> = engine.eval(script);
        assert!(result.is_ok());
        assert_eq!(result.unwrap(), true);
    }
}