// Unit test for the per-game audio override store (save/load round-trip, case-insensitive
// lookup by image name, and the differing-overwrite detection that drives the warning).
#include <cstdint>
#include <cstdio>
#include <string>

#include <windows.h>

#include <mmreg.h>

#include "audio/audio_overrides.hpp"

using namespace coop;

namespace {
int g_failures = 0;
void check(bool ok, const char* what)
{
	if (!ok) {
		std::printf("FAIL: %s\n", what);
		++g_failures;
	} else {
		std::printf("  ok: %s\n", what);
	}
}

std::wstring temp_path()
{
	wchar_t dir[MAX_PATH] = {};
	GetTempPathW(MAX_PATH, dir);
	return std::wstring(dir) + L"coop_overrides_test_" + std::to_wstring(GetCurrentProcessId()) + L".ini";
}
} // namespace

int main()
{
	const std::wstring path = temp_path();
	DeleteFileW(path.c_str());

	const AudioFormatOverride brotato{44100, 2, 32, WAVE_FORMAT_IEEE_FLOAT};
	const AudioFormatOverride snb{48000, 2, 16, WAVE_FORMAT_PCM};
	const AudioFormatOverride cafe_ov{96000, 2, 32, WAVE_FORMAT_IEEE_FLOAT};
	// "cafe.exe" with the e replaced by U+00E9 ('e' with acute). Under the old 7-bit narrow,
	// 0x00E9 & 0x7F == 0x69 == 'i', so this collapsed onto "cafi.exe" -- a silent key collision.
	// Built from a code point so the source stays pure ASCII (no literal/escape encoding hazards).
	const wchar_t cafe_buf[] = {L'c', L'a', L'f', static_cast<wchar_t>(0x00E9), L'.', L'e', L'x', L'e', L'\0'};
	const wchar_t* kCafe = cafe_buf;

	{
		AudioOverrideStore store(path);
		store.load(); // missing file -> empty
		AudioFormatOverride got;
		check(!store.find(L"brotato.exe", got), "empty store: no entry");

		bool differed = true;
		store.set(L"C:\\games\\Brotato.exe", brotato, &differed); // full path -> basename key
		check(!differed, "first set: not a differing overwrite");
		store.set(L"snb.exe", snb, &differed);
		check(!differed, "new game set: not a differing overwrite");

		// Same value again -> not differing.
		store.set(L"brotato.exe", brotato, &differed);
		check(!differed, "identical re-set: not differing");

		// Different value -> differing (drives the warning).
		const AudioFormatOverride brotato2{48000, 2, 32, WAVE_FORMAT_IEEE_FLOAT};
		store.set(L"brotato.exe", brotato2, &differed);
		check(differed, "changed value: flagged as differing overwrite");

		// Non-ASCII names must keep their own entry (no high-bit collision with the ASCII look-alike).
		store.set(kCafe, cafe_ov, &differed);
		store.set(L"cafi.exe", snb, &differed);
		AudioFormatOverride na;
		check(store.find(kCafe, na) && na == cafe_ov, "non-ASCII name keeps its own override");
		check(store.find(L"cafi.exe", na) && na == snb, "the ASCII look-alike keeps a separate override");
	}

	// Reload from disk in a fresh store: persistence + case-insensitive basename lookup.
	{
		AudioOverrideStore store(path);
		store.load();
		AudioFormatOverride got;
		check(store.find(L"BROTATO.EXE", got), "reload: found case-insensitively");
		check(got == AudioFormatOverride{48000, 2, 32, WAVE_FORMAT_IEEE_FLOAT}, "reload: latest value persisted");
		check(store.find(L"D:\\steam\\snb.exe", got) && got == snb, "reload: found by full path basename");
		check(!store.find(L"unknown.exe", got), "reload: unknown game absent");
		// The non-ASCII name must survive the UTF-8 persist/reload round-trip.
		check(store.find(kCafe, got) && got == cafe_ov, "reload: non-ASCII name round-trips losslessly");
	}

	DeleteFileW(path.c_str());
	if (g_failures == 0) {
		std::printf("PASS audio_overrides_test\n");
		return 0;
	}
	std::printf("FAILED audio_overrides_test (%d)\n", g_failures);
	return 1;
}