#pragma once

#include <robin_hood.h>
#include <cstdio>
#include <cstring>
#include <filesystem>
#include <glm/glm.hpp>
#include <string>
#include <string_view>

namespace Utils {

enum IoMode {
	Read,
	WriteTruncate,
	WriteAppend,
};

FILE* OpenCstdioFile(const std::filesystem::path& path, IoMode mode, bool binary = false);
FILE* OpenCstdioFile(const char* path, IoMode mode, bool binary = false);

std::string ReadFileAsString(const std::filesystem::path& path);

constexpr float Abs(float v) noexcept {
	return v < 0.0f ? -v : v;
}

bool InRangeInclusive(int n, int lower, int upper);
bool LineContains(glm::ivec2 p1, glm::ivec2 p2, glm::ivec2 candidate);

bool IsColinear(glm::ivec2 p1, glm::ivec2 p2);

template <class T>
void HashCombine(std::size_t& seed, const T& v) {
	seed ^= std::hash<T>{}(v) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
}

std::string MakeRandomNumberedName(const char* tag);

} // namespace Utils

struct StringHash {
	using is_transparent = void;

	std::size_t operator()(const std::string& key) const { return robin_hood::hash_bytes(key.c_str(), key.size()); }
	std::size_t operator()(std::string_view key) const { return robin_hood::hash_bytes(key.data(), key.size()); }
	std::size_t operator()(const char* key) const { return robin_hood::hash_bytes(key, std::strlen(key)); }
};

struct StringEqual {
	using is_transparent = int;

	bool operator()(std::string_view lhs, const std::string& rhs) const {
		const std::string_view view = rhs;
		return lhs == view;
	}

	bool operator()(const char* lhs, const std::string& rhs) const {
		return std::strcmp(lhs, rhs.c_str()) == 0;
	}

	bool operator()(const std::string& lhs, const std::string& rhs) const {
		return lhs == rhs;
	}
};