// Per-game audio-format overrides, persisted next to the exe so a game whose hooked
// format was wrong/unrecoverable is auto-corrected on its next launch. Keyed by the
// game's image name (case-insensitive). Two writers: the operator's manual Override, and
// auto-learning a format the hook caught exactly at IAudioClient::Initialize (ground
// truth). A human-readable one-line-per-game text file:
//
//   # CoopAllTheThings per-game audio overrides
//   brotato.exe = 44100 2 32 float
//   snb.exe = 48000 2 16 pcm
#pragma once

#include <cstdint>
#include <map>
#include <string>

namespace coop
{

struct AudioFormatOverride
{
	std::uint32_t rate = 0;
	std::uint32_t channels = 0;
	std::uint32_t bits = 0;
	std::uint32_t format_tag = 0; // WAVE_FORMAT_PCM (1) / WAVE_FORMAT_IEEE_FLOAT (3)

	[[nodiscard]] bool valid() const
	{
		return rate != 0 && channels != 0 && bits != 0;
	}
	bool operator==(const AudioFormatOverride& o) const
	{
		return rate == o.rate && channels == o.channels && bits == o.bits && format_tag == o.format_tag;
	}
	bool operator!=(const AudioFormatOverride& o) const
	{
		return !(*this == o);
	}
};

class AudioOverrideStore
{
public:
	// `path` empty -> default (exe_dir/coop_audio_overrides.ini). Does not load yet.
	explicit AudioOverrideStore(std::wstring path = {});

	void load(); // (re)read the file; missing file is fine (empty store)

	// Look up an override by image name (case-insensitive, basename). False if none.
	[[nodiscard]] bool find(const std::wstring& image_name, AudioFormatOverride& out) const;

	// Store image_name -> fmt and persist immediately. Sets *differed = true when an
	// existing entry for that game differed from `fmt` (caller warns the operator).
	void set(const std::wstring& image_name, const AudioFormatOverride& fmt, bool* differed = nullptr);

	[[nodiscard]] const std::wstring& path() const
	{
		return path_;
	}

private:
	static std::wstring key_of(const std::wstring& image_name); // lowercased basename
	void save() const;

	std::wstring path_;
	std::map<std::wstring, AudioFormatOverride> map_;
};

} // namespace coop