//! Rhai integration tests for Mycelium module
//!
//! These tests validate the Rhai wrapper functions and ensure proper
//! integration between Rust and Rhai for Mycelium operations.

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

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

    fn create_test_engine() -> Engine {
        let mut engine = Engine::new();
        register_mycelium_module(&mut engine).expect("Failed to register mycelium 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 mycelium functions are available
            let functions_exist = true;
            
            // We can't actually call these without a server, 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_mycelium_get_node_info_function_exists() {
        let engine = create_test_engine();

        // Test that mycelium_get_node_info function is registered
        let script = r#"
            // This will fail with connection error, but proves the function exists
            try {
                mycelium_get_node_info("http://localhost:99999");
                false; // Should not reach here
            } catch(err) {
                // Function exists but failed due to connection - this is expected
                return err.to_string().contains("Mycelium error");
            }
        "#;

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

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

        let script = r#"
            try {
                mycelium_list_peers("http://localhost:99999");
                return false;
            } catch(err) {
                return err.to_string().contains("Mycelium error");
            }
        "#;

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

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

        let script = r#"
            try {
                mycelium_add_peer("http://localhost:99999", "tcp://example.com:9651");
                return false;
            } catch(err) {
                return err.to_string().contains("Mycelium error");
            }
        "#;

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

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

        let script = r#"
            try {
                mycelium_remove_peer("http://localhost:99999", "peer_id");
                return false;
            } catch(err) {
                return err.to_string().contains("Mycelium error");
            }
        "#;

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

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

        let script = r#"
            try {
                mycelium_list_selected_routes("http://localhost:99999");
                return false;
            } catch(err) {
                return err.to_string().contains("Mycelium error");
            }
        "#;

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

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

        let script = r#"
            try {
                mycelium_list_fallback_routes("http://localhost:99999");
                return false;
            } catch(err) {
                return err.to_string().contains("Mycelium error");
            }
        "#;

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

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

        let script = r#"
            try {
                mycelium_send_message("http://localhost:99999", "destination", "topic", "message", -1);
                return false;
            } catch(err) {
                return err.to_string().contains("Mycelium error");
            }
        "#;

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

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

        let script = r#"
            try {
                mycelium_receive_messages("http://localhost:99999", "topic", 1);
                return false;
            } catch(err) {
                return err.to_string().contains("Mycelium error");
            }
        "#;

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

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

        // Test that functions handle parameter validation correctly
        let script = r#"
            let test_results = [];
            
            // Test empty API URL
            try {
                mycelium_get_node_info("");
                test_results.push(false);
            } catch(err) {
                test_results.push(true); // Expected to fail
            }
            
            // Test empty peer address
            try {
                mycelium_add_peer("http://localhost:8989", "");
                test_results.push(false);
            } catch(err) {
                test_results.push(true); // Expected to fail
            }
            
            // Test negative timeout handling
            try {
                mycelium_receive_messages("http://localhost:99999", "topic", -1);
                test_results.push(false);
            } catch(err) {
                // Should handle negative timeout gracefully
                test_results.push(err.to_string().contains("Mycelium error"));
            }
            
            test_results
        "#;

        let result: Result<rhai::Array, Box<EvalAltResult>> = engine.eval(script);
        assert!(result.is_ok());
        let results = result.unwrap();

        // All parameter validation tests should pass
        for (i, result) in results.iter().enumerate() {
            assert_eq!(
                result.as_bool().unwrap_or(false),
                true,
                "Parameter validation test {} failed",
                i
            );
        }
    }

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

        // Test that error messages are properly formatted
        let script = r#"
            try {
                mycelium_get_node_info("http://localhost:99999");
                return "";
            } catch(err) {
                let error_str = err.to_string();
                // Should contain "Mycelium error:" prefix
                if error_str.contains("Mycelium error:") {
                    return "correct_format";
                } else {
                    return error_str;
                }
            }
        "#;

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

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

        // Test different timeout parameter values
        let script = r#"
            let timeout_tests = [];
            
            // Test positive timeout
            try {
                mycelium_receive_messages("http://localhost:99999", "topic", 5);
                timeout_tests.push(false);
            } catch(err) {
                timeout_tests.push(err.to_string().contains("Mycelium error"));
            }
            
            // Test zero timeout
            try {
                mycelium_receive_messages("http://localhost:99999", "topic", 0);
                timeout_tests.push(false);
            } catch(err) {
                timeout_tests.push(err.to_string().contains("Mycelium error"));
            }
            
            // Test negative timeout (should be treated as no timeout)
            try {
                mycelium_receive_messages("http://localhost:99999", "topic", -1);
                timeout_tests.push(false);
            } catch(err) {
                timeout_tests.push(err.to_string().contains("Mycelium error"));
            }
            
            timeout_tests
        "#;

        let result: Result<rhai::Array, Box<EvalAltResult>> = engine.eval(script);
        assert!(result.is_ok());
        let results = result.unwrap();

        // All timeout tests should handle the connection error properly
        for (i, result) in results.iter().enumerate() {
            assert_eq!(
                result.as_bool().unwrap_or(false),
                true,
                "Timeout test {} failed",
                i
            );
        }
    }
}