#ifndef INTERPRETER_DEFINE_VARIABLE_STATEMENT_NODE_HPP
#define INTERPRETER_DEFINE_VARIABLE_STATEMENT_NODE_HPP

#include <memory>
#include <string>
#include <utility>

#include "ExpressionNode.hpp"
#include "Interpreter.hpp"
#include "Interpreter/StatementNode.hpp"
// Include for unified runtime Exception
#include "Interpreter/Interpreter.hpp"
#include "Symbols/SymbolContainer.hpp"
#include "Symbols/SymbolFactory.hpp"

namespace Interpreter {

class DeclareVariableStatementNode : public StatementNode {
    std::string                     variableName_;
    Symbols::Variables::Type        variableType_;
    std::unique_ptr<ExpressionNode> expression_;
    std::string                     ns;


  public:
    DeclareVariableStatementNode(std::string name, const std::string & ns, Symbols::Variables::Type type,
                                 std::unique_ptr<ExpressionNode> expr, const std::string & file_name, int file_line,
                                 size_t line_column) :
        StatementNode(file_name, file_line, line_column),
        variableName_(std::move(name)),
        variableType_(type),
        expression_(std::move(expr)),
        ns(ns) {}

    void interpret(Interpreter & interpreter) const override {
        try {
            Symbols::Value value = expression_->evaluate(interpreter);
            if (Symbols::SymbolContainer::instance()->exists(variableName_)) {
                throw Exception("Variable already declared: " + variableName_, filename_, line_, column_);
            }
            if (value.getType() != variableType_) {
                using namespace Symbols::Variables;
                std::string expected = TypeToString(variableType_);
                std::string actual   = TypeToString(value.getType());
                throw Exception(
                    "Type mismatch for variable '" + variableName_ +
                    "': expected '" + expected + "' but got '" + actual + "'",
                    filename_, line_, column_);
            }
            const auto variable = Symbols::SymbolFactory::createVariable(variableName_, value, ns, variableType_);
            Symbols::SymbolContainer::instance()->add(variable);
        } catch (const Exception &) {
            throw;
        } catch (const std::exception &e) {
            throw Exception(e.what(), filename_, line_, column_);
        }
    }

    std::string toString() const override {
        return std::string("variable name: " + variableName_ +
                           " type: " + Symbols::Variables::TypeToString(variableType_));
    }
};

}  // namespace Interpreter

#endif  // INTERPRETER_DEFINE_VARIABLE_STATEMENT_NODE_HPP