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

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

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

    fn create_test_engine() -> Engine {
        let mut engine = Engine::new();
        register_text_module(&mut engine).expect("Failed to register text 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 text functions are available
            let functions_exist = true;
            functions_exist
        "#;

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

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

        let script = r#"
            let indented = "    line 1\n    line 2\n        line 3";
            let result = dedent(indented);
            return result == "line 1\nline 2\n    line 3";
        "#;

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

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

        let script = r#"
            let text = "line 1\nline 2";
            let result = prefix(text, "> ");
            return result == "> line 1\n> line 2";
        "#;

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

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

        let script = r#"
            let unsafe_name = "User's File [Draft].txt";
            let result = name_fix(unsafe_name);
            return result == "users_file_draft_.txt";
        "#;

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

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

        let script = r#"
            let unsafe_path = "/path/to/User's File.txt";
            let result = path_fix(unsafe_path);
            return result == "/path/to/users_file.txt";
        "#;

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

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

        let script = r#"
            let builder = text_replacer_builder();
            return type_of(builder) == "sal_text::replace::TextReplacerBuilder";
        "#;

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

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

        let script = r#"
            let builder = text_replacer_builder();
            builder = pattern(builder, "hello");
            builder = replacement(builder, "hi");
            builder = regex(builder, false);
            
            let replacer = build(builder);
            let result = replace(replacer, "hello world, hello universe");
            
            return result == "hi world, hi universe";
        "#;

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

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

        let script = r#"
            let builder = text_replacer_builder();
            builder = pattern(builder, r"\d+");
            builder = replacement(builder, "NUMBER");
            builder = regex(builder, true);
            
            let replacer = build(builder);
            let result = replace(replacer, "There are 123 items");
            
            return result == "There are NUMBER items";
        "#;

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

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

        let script = r#"
            let builder = text_replacer_builder();
            builder = pattern(builder, "world");
            builder = replacement(builder, "universe");
            builder = regex(builder, false);
            builder = and(builder);
            builder = pattern(builder, r"\d+");
            builder = replacement(builder, "NUMBER");
            builder = regex(builder, true);
            
            let replacer = build(builder);
            let result = replace(replacer, "Hello world, there are 123 items");
            
            return result == "Hello universe, there are NUMBER items";
        "#;

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

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

        let script = r#"
            // We can't test file operations easily in unit tests,
            // but we can test that the function exists and returns the right type
            try {
                let builder = template_builder_open("/nonexistent/file.txt");
                return false; // Should have failed
            } catch(err) {
                return err.to_string().contains("error"); // Expected to fail
            }
        "#;

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

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

        let script = r#"
            try {
                let builder = text_replacer_builder();
                builder = pattern(builder, "[invalid regex");
                builder = replacement(builder, "test");
                builder = regex(builder, true);
                let replacer = build(builder);
                return false; // Should have failed
            } catch(err) {
                return true; // Expected to fail
            }
        "#;

        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 string handling
            try {
                let result = dedent("");
                test_results.push(result == "");
            } catch(err) {
                test_results.push(false);
            }
            
            // Test empty prefix
            try {
                let result = prefix("test", "");
                test_results.push(result == "test");
            } catch(err) {
                test_results.push(false);
            }
            
            // Test empty name_fix
            try {
                let result = name_fix("");
                test_results.push(result == "");
            } catch(err) {
                test_results.push(false);
            }
            
            return 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_unicode_handling() {
        let engine = create_test_engine();

        let script = r#"
            let unicode_tests = [];
            
            // Test dedent with unicode
            try {
                let text = "    Hello 世界\n    Goodbye 世界";
                let result = dedent(text);
                unicode_tests.push(result == "Hello 世界\nGoodbye 世界");
            } catch(err) {
                unicode_tests.push(false);
            }
            
            // Test name_fix with unicode (should remove non-ASCII)
            try {
                let result = name_fix("Café");
                unicode_tests.push(result == "caf");
            } catch(err) {
                unicode_tests.push(false);
            }
            
            // Test prefix with unicode
            try {
                let result = prefix("Hello 世界", "🔹 ");
                unicode_tests.push(result == "🔹 Hello 世界");
            } catch(err) {
                unicode_tests.push(false);
            }
            
            return unicode_tests;
        "#;

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

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

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

        let script = r#"
            // Simple workflow test
            let unsafe_filename = "User's Script [Draft].py";
            let safe_filename = name_fix(unsafe_filename);

            let indented_code = "    def hello():\n        return True";
            let dedented_code = dedent(indented_code);

            let results = [];
            results.push(safe_filename == "users_script_draft_.py");
            results.push(dedented_code.contains("def hello():"));

            return results;
        "#;

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

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