#pragma once
#include "items/Item.h"
#include "quest/QuestJournal.h"
#include "LocationGameState.h"
#include "ISaveable.h"
#include "external/nlohmann/json.hpp"
#include <unordered_map>
#include <string>
#include <memory>
#include <vector>

namespace FRG {

// The tutorial is one linear sequence: each step shows its hint until the player
// performs the action, then moves on to the next step (GameState::completeTutorialStep).
// Values are saved; AdvanceDialogue..PickUpItem keep the numbers of the old Step0..Step4.
enum class TutorialStep {
	AdvanceDialogue,   // dorm: "click to advance the dialogue"
	RotateCamera,      // dorm
	Walk,              // dorm: tap the floor
	Zoom,              // dorm; interactive objects stay locked until this is done
	PickUpItem,        // dorm: take the phone or the journal
	EnterDarklands,    // uni_interior: press the darklands button (once the spell note is picked up)
	DarklandsHealth,   // uni_interior darklands: health bar hint, until the player walks
	DarklandsExplore,  // uni_interior darklands: no hint, until the ghost zone is reached
	DarklandsAttack,   // uni_interior darklands: attack hint, until an enemy is killed
	Completed          // no more hints; a new game starts here when the tutorial is disabled
};

struct StoredChatMessage {
	std::string text;
	bool incoming;
};

struct GameState : public ISaveable {
	static constexpr int kSchemaVersion = 5;

	// --- World ---
	// Campaign being played (see CampaignRegistry).
	std::string campaignId = "main";
	// Pure authoritative location data. Live Location/render/script instances are
	// private runtime storage in InternalGameServer and never enter GameState.
	std::unordered_map<std::string, LocationGameState> locations;
	// Players are campaign-level entities and remain stable across locations.
	PlayerStateMap players;
	std::string currentLocationName;
	bool isDarklands = false;
	bool isNight     = false;
	bool isDawn      = false;

	// --- Player resources ---
	Inventory inventory;
	//float playerHp    = 200.f;
	float playerMaxHp = 200.f;
	int   money       = 5500;

	// --- Script globals ---
	std::unordered_map<std::string, int>   globalInts;
	std::unordered_map<std::string, float> globalFloats;

	// --- Quest system ---
	Quest::QuestJournal questJournal;

	// --- Tutorial ---
	TutorialStep tutorialStep = TutorialStep::AdvanceDialogue;
	// Hints that run alongside the linear steps, until the tutorial is Completed.
	bool tutorialPhoneChatScreenOpened  = false;  // "open the messenger" hint is done
	bool tutorialJournalScreenOpened    = false;  // "open the journal" hint is done
	bool tutorialNeedOpenTaxiScreen     = false;  // "call a taxi" hint is showing
	bool tutorialTaxiHintDone           = false;  // a taxi was ordered; never show the hint again

	bool isTutorialActive() const { return tutorialStep != TutorialStep::Completed; }
	// Moves to the next step if `step` is the current one; returns whether it did.
	bool completeTutorialStep(TutorialStep step);

	CharacterState* findCharacter(
		const std::string& locationId, const std::string& characterId);
	const CharacterState* findCharacter(
		const std::string& locationId, const std::string& characterId) const;

	// --- Phone / chat ---
	bool        chatUnread[3]    = { true, true, true };
	std::string chatPreviewMsg[3];
	std::vector<StoredChatMessage> chatHistory[3];

	bool taxiIsCalled = false;

	void save(nlohmann::json& out) const override;
	void load(const nlohmann::json& in) override;
};

} // namespace FRG