// Copyright (c) Epic Games Tools
// Licensed under the MIT license (https://opensource.org/license/mit/)

internal String8
lnk_make_linker_compile3(Arena *arena, COFF_MachineType machine)
{
  return cv_make_comp3(arena,
                       0,
                       CV_Language_LINK,
                       cv_arch_from_coff_machine(machine),
                       /* ver_fe_major */ 0,
                       /* ver_fe_minor */ 0,
                       /* ver_fe_build */ 0,
                       /* ver_feqfe    */ 0,
                       /* ver_major    */ 14,
                       /* ver_minor    */ 36,
                       /* ver_build    */ 32537,
                       /* ver_qfe      */ 0,
                       str8_lit(BUILD_TITLE));
}

internal String8
lnk_make_debug_s(Arena *arena, String8List symbols)
{
  Temp scratch = scratch_begin(&arena, 1);

  cv_patch_symbol_tree_offsets(symbols, sizeof(CV_Signature), CV_SymbolAlign);

  CV_DebugS   debug_s           = { .data_list[CV_C13SubSectionIdxKind_Symbols] = symbols };
  String8List debug_s_data_list = cv_data_from_debug_s_c13(scratch.arena, &debug_s, 1);
  String8     debug_s_data      = str8_list_join(arena, &debug_s_data_list, 0);

  scratch_end(scratch);
  return debug_s_data;
}

internal String8
lnk_make_linker_debug_symbols(Arena *arena, COFF_MachineType machine)
{
  Temp scratch = scratch_begin(&arena, 1);

  String8List symbols = {0};
  str8_list_push(scratch.arena, &symbols, cv_make_symbol(scratch.arena, CV_SymKind_COMPILE3, lnk_make_linker_compile3(scratch.arena, machine)));
  String8 debug_symbols = lnk_make_debug_s(arena, symbols);

  scratch_end(scratch);
  return debug_symbols;
}

internal String8
lnk_make_dll_import_debug_symbols(Arena *arena, COFF_MachineType machine, String8 dll_name)
{
  Temp scratch = scratch_begin(&arena,1);

  String8List symbols = {0};
  str8_list_push(scratch.arena, &symbols, cv_make_symbol(scratch.arena, CV_SymKind_OBJNAME, cv_make_obj_name(scratch.arena, dll_name, 0)));
  str8_list_push(scratch.arena, &symbols, cv_make_symbol(scratch.arena, CV_SymKind_COMPILE3, lnk_make_linker_compile3(scratch.arena, machine)));

  // TODO: add thunks

  // serialize symbols
  String8 debug_symbols = lnk_make_debug_s(arena, symbols);

  scratch_end(scratch);
  return debug_symbols;
}