#pragma once

#ifndef JAK_COMPILER_H
#define JAK_COMPILER_H

#include <functional>
#include "common/type_system/TypeSystem.h"
#include "Env.h"
#include "goalc/listener/Listener.h"
#include "common/goos/Interpreter.h"
#include "goalc/compiler/IR.h"
#include "goalc/debugger/Debugger.h"
#include "CompilerSettings.h"

enum MathMode { MATH_INT, MATH_BINT, MATH_FLOAT, MATH_INVALID };

class Compiler {
 public:
  Compiler();
  ~Compiler();
  void execute_repl();
  goos::Interpreter& get_goos() { return m_goos; }
  FileEnv* compile_object_file(const std::string& name, goos::Object code, bool allow_emit);
  std::unique_ptr<FunctionEnv> compile_top_level_function(const std::string& name,
                                                          const goos::Object& code,
                                                          Env* env);
  Val* compile(const goos::Object& code, Env* env);
  Val* compile_error_guard(const goos::Object& code, Env* env);
  void throw_compile_error(const goos::Object& o, const std::string& err);
  void ice(const std::string& err);
  None* get_none() { return m_none.get(); }

  std::vector<std::string> run_test_from_file(const std::string& source_code);
  std::vector<std::string> run_test_from_string(const std::string& src);
  std::vector<std::string> run_test_no_load(const std::string& source_code);
  void shutdown_target();
  void enable_throw_on_redefines() { m_throw_on_define_extern_redefinition = true; }
  Debugger& get_debugger() { return m_debugger; }

  void poke_target() { m_listener.send_poke(); }

  bool connect_to_target();

 private:
  void init_logger();
  void init_settings();
  bool try_getting_macro_from_goos(const goos::Object& macro_name, goos::Object* dest);
  Val* compile_goos_macro(const goos::Object& o,
                          const goos::Object& macro_obj,
                          const goos::Object& rest,
                          Env* env);
  Val* compile_pair(const goos::Object& code, Env* env);
  Val* compile_integer(const goos::Object& code, Env* env);
  Val* compile_integer(s64 value, Env* env);
  Val* compile_float(const goos::Object& code, Env* env);
  Val* compile_float(float value, Env* env, int seg);
  Val* compile_symbol(const goos::Object& form, Env* env);
  Val* compile_string(const goos::Object& form, Env* env);
  Val* compile_string(const std::string& str, Env* env, int seg = MAIN_SEGMENT);
  Val* compile_get_symbol_value(const std::string& name, Env* env);
  Val* compile_function_or_method_call(const goos::Object& form, Env* env);

  Val* get_field_of_structure(const StructureType* type,
                              Val* object,
                              const std::string& field_name,
                              Env* env);

  SymbolVal* compile_get_sym_obj(const std::string& name, Env* env);
  void color_object_file(FileEnv* env);
  std::vector<u8> codegen_object_file(FileEnv* env);

  void for_each_in_list(const goos::Object& list,
                        const std::function<void(const goos::Object&)>& f);

  goos::Arguments get_va(const goos::Object& form, const goos::Object& rest);
  void va_check(
      const goos::Object& form,
      const goos::Arguments& args,
      const std::vector<MatchParam<goos::ObjectType>>& unnamed,
      const std::unordered_map<std::string, std::pair<bool, MatchParam<goos::ObjectType>>>& named);
  std::string as_string(const goos::Object& o);
  std::string symbol_string(const goos::Object& o);
  std::string quoted_sym_as_string(const goos::Object& o);
  bool is_quoted_sym(const goos::Object& o);
  bool is_basic(const TypeSpec& ts);
  bool is_structure(const TypeSpec& ts);
  const goos::Object& pair_car(const goos::Object& o);
  const goos::Object& pair_cdr(const goos::Object& o);
  void expect_empty_list(const goos::Object& o);
  void typecheck(const goos::Object& form,
                 const TypeSpec& expected,
                 const TypeSpec& actual,
                 const std::string& error_message = "");

  TypeSpec parse_typespec(const goos::Object& src);
  bool is_local_symbol(const goos::Object& obj, Env* env);
  emitter::RegKind get_preferred_reg_kind(const TypeSpec& ts);
  Val* compile_real_function_call(const goos::Object& form,
                                  RegVal* function,
                                  const std::vector<RegVal*>& args,
                                  Env* env,
                                  const std::string& method_type_name = "");

  bool try_getting_constant_integer(const goos::Object& in, int64_t* out, Env* env);
  float try_getting_constant_float(const goos::Object& in, float* out, Env* env);

  TypeSystem m_ts;
  std::unique_ptr<GlobalEnv> m_global_env = nullptr;
  std::unique_ptr<None> m_none = nullptr;
  bool m_want_exit = false;
  listener::Listener m_listener;
  Debugger m_debugger;
  goos::Interpreter m_goos;
  std::unordered_map<std::string, TypeSpec> m_symbol_types;
  std::unordered_map<std::shared_ptr<goos::SymbolObject>, goos::Object> m_global_constants;
  std::unordered_map<std::shared_ptr<goos::SymbolObject>, LambdaVal*> m_inlineable_functions;
  CompilerSettings m_settings;
  bool m_throw_on_define_extern_redefinition = false;
  MathMode get_math_mode(const TypeSpec& ts);
  bool is_number(const TypeSpec& ts);
  bool is_float(const TypeSpec& ts);
  bool is_integer(const TypeSpec& ts);
  bool is_binteger(const TypeSpec& ts);
  bool is_singed_integer_or_binteger(const TypeSpec& ts);
  Val* number_to_integer(Val* in, Env* env);
  Val* number_to_float(Val* in, Env* env);
  Val* number_to_binteger(Val* in, Env* env);
  Val* to_math_type(Val* in, MathMode mode, Env* env);
  bool is_none(Val* in);

  Val* compile_variable_shift(const RegVal* in, const RegVal* sa, Env* env, IntegerMathKind kind);

  Val* compile_format_string(const goos::Object& form,
                             Env* env,
                             const std::string& fmt_template,
                             std::vector<RegVal*> args,
                             const std::string& out_stream = "#t");
  void generate_field_description(const goos::Object& form,
                                  StructureType* type,
                                  Env* env,
                                  RegVal* reg,
                                  const Field& f);
  Val* generate_inspector_for_type(const goos::Object& form, Env* env, Type* type);
  RegVal* compile_get_method_of_type(const TypeSpec& type,
                                     const std::string& method_name,
                                     Env* env);
  RegVal* compile_get_method_of_object(RegVal* object, const std::string& method_name, Env* env);
  Val* compile_define_constant(const goos::Object& form,
                               const goos::Object& rest,
                               Env* env,
                               bool goos,
                               bool goal);

  Val* compile_new_static_structure_or_basic(const goos::Object& form,
                                             const TypeSpec& type,
                                             const goos::Object& field_defs,
                                             Env* env);

 public:
  // Atoms

  // Block
  Val* compile_begin(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_top_level(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_block(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_return_from(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_label(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_goto(const goos::Object& form, const goos::Object& rest, Env* env);

  // CompilerControl
  Val* compile_seval(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_exit(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_asm_file(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_listen_to_target(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_reset_target(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_poke(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_gs(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_set_config(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_in_package(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_build_dgo(const goos::Object& form, const goos::Object& rest, Env* env);

  // ControlFlow
  Condition compile_condition(const goos::Object& condition, Env* env, bool invert);
  Val* compile_condition_as_bool(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_when_goto(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_cond(const goos::Object& form, const goos::Object& rest, Env* env);

  // Define
  Val* compile_define(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_define_extern(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_set(const goos::Object& form, const goos::Object& rest, Env* env);

  // Debug
  Val* compile_dbg(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_dbs(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_break(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_cont(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_dump_all(const goos::Object& form, const goos::Object& rest, Env* env);

  // Macro
  Val* compile_gscond(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_quote(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_defglobalconstant(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_defconstant(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_mlet(const goos::Object& form, const goos::Object& rest, Env* env);

  // Math
  Val* compile_add(const goos::Object& form, const goos::Object& rest, Env* env);

  Val* compile_sub(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_mul(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_div(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_shlv(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_sarv(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_shrv(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_mod(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_logxor(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_lognot(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_logand(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_logior(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_pointer_add(const goos::Object& form, const goos::Object& rest, Env* env);

  // Function
  Val* compile_lambda(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_inline(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_declare(const goos::Object& form, const goos::Object& rest, Env* env);

  // Type
  Val* compile_deftype(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_defmethod(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_deref(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_the_as(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_the(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_print_type(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_new(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_car(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_cdr(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_method(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_addr_of(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_declare_type(const goos::Object& form, const goos::Object& rest, Env* env);
  Val* compile_none(const goos::Object& form, const goos::Object& rest, Env* env);
};

#endif  // JAK_COMPILER_H