import { defineStore } from "pinia";
import { TrigoGameFrontend } from "../utils/TrigoGameFrontend";
import type {
	Stone,
	BoardShape,
	Player,
	Move,
	Position,
	GameConfig,
	TerritoryResult
} from "../../../inc/trigo";

/**
 * Game Store State
 *
 * Refactored to use TrigoGameFrontend as the single source of truth
 */
export interface GameState {
	game: TrigoGameFrontend;
	config: GameConfig;
}

/**
 * Pinia store for game state management
 *
 * Now delegates all game logic to TrigoGameFrontend
 */
export const useGameStore = defineStore("game", {
	state: (): GameState => ({
		game: new TrigoGameFrontend({ x: 5, y: 5, z: 5 }),
		config: {
			boardShape: { x: 5, y: 5, z: 5 },
			allowUndo: true
		}
	}),

	getters: {
		// Board state
		board: (state): Stone[][][] => state.game.getBoard(),
		boardShape: (state): BoardShape => state.game.getShape(),

		// Current player
		currentPlayer: (state): Player => state.game.getCurrentPlayerString(),
		currentPlayerColor: (state): Player => state.game.getCurrentPlayerString(),
		opponentPlayer: (state): Player => state.game.getOpponentPlayer(),

		// Move history
		moveHistory: (state): Move[] => state.game.getMoveHistory(),
		moveCount: (state): number => state.game.getMoveCount(),
		currentMoveIndex: (state): number => state.game.getCurrentMoveIndex(),
		currentMoves: (state): Move[] => {
			const history = state.game.getMoveHistory();
			const currentIndex = state.game.getCurrentMoveIndex();
			return history.slice(0, currentIndex);
		},

		// Game status
		gameStatus: (state) => state.game.getStatus(),
		gameResult: (state) => state.game.getResult(),
		isGameActive: (state): boolean => state.game.isGameActive(),

		// Captured stones
		capturedStones: (state): { black: number; white: number } => {
			const counts = state.game.getCapturedCounts();
			return {
				black: counts.white, // Black captured white stones
				white: counts.black // White captured black stones
			};
		},

		// Pass tracking
		passCount: (state): number => state.game.getConsecutivePassCount(),

		// Undo/Redo capabilities
		canUndo: (state): boolean => {
			return state.config.allowUndo && state.game.canUndo();
		},
		canRedo: (state): boolean => {
			return state.config.allowUndo && state.game.canRedo();
		},

		// Position checks
		isValidPosition:
			(state) =>
			(x: number, y: number, z: number): boolean => {
				return state.game.isValidPosition(x, y, z);
			},
		isEmpty:
			(state) =>
			(x: number, y: number, z: number): boolean => {
				return state.game.isEmpty(x, y, z);
			},
		getStone:
			(state) =>
			(x: number, y: number, z: number): Stone => {
				return state.game.getStoneAt(x, y, z) as Stone;
			}
	},

	actions: {
		/**
		 * Initialize a new game
		 */
		initializeGame(boardShape: BoardShape = { x: 5, y: 5, z: 5 }): void {
			this.game = new TrigoGameFrontend(boardShape);
			this.config.boardShape = boardShape;
			this.saveToSessionStorage();
		},

		/**
		 * Start the game
		 */
		startGame(): void {
			this.game.startGame();
			this.saveToSessionStorage();
		},

		/**
		 * Make a move
		 */
		makeMove(
			x: number,
			y: number,
			z: number
		): { success: boolean; capturedPositions?: Position[] } {
			// Check if game is active
			if (!this.game.isGameActive()) {
				console.warn("Game is not active");
				return { success: false };
			}

			// Attempt to make the move
			const success = this.game.makeMove(x, y, z);

			if (success) {
				// Get captured positions from last step
				const lastStep = this.game.getLastStep();
				const capturedPositions = lastStep?.capturedPositions;

				// Save to storage
				this.saveToSessionStorage();

				return { success: true, capturedPositions };
			}

			return { success: false };
		},

		/**
		 * Pass turn
		 */
		pass(): boolean {
			if (!this.game.isGameActive()) {
				return false;
			}

			const success = this.game.pass();
			if (success) {
				this.saveToSessionStorage();
			}
			return success;
		},

		/**
		 * Resign/surrender
		 */
		resign(): boolean {
			if (!this.game.isGameActive()) {
				return false;
			}

			const success = this.game.surrender();
			if (success) {
				this.saveToSessionStorage();
			}
			return success;
		},

		/**
		 * Undo last move
		 */
		undoMove(): boolean {
			if (!this.canUndo) {
				return false;
			}

			const success = this.game.undoMove();
			if (success) {
				this.saveToSessionStorage();
			}
			return success;
		},

		/**
		 * Redo next move
		 */
		redoMove(): boolean {
			if (!this.canRedo) {
				return false;
			}

			const success = this.game.redoMove();
			if (success) {
				this.saveToSessionStorage();
			}
			return success;
		},

		/**
		 * Jump to specific move in history
		 */
		jumpToMove(index: number): boolean {
			const success = this.game.jumpToMove(index);
			if (success) {
				this.saveToSessionStorage();
			}
			return success;
		},

		/**
		 * Reset game to initial state
		 */
		resetGame(): void {
			this.game.reset();
			this.saveToSessionStorage();
		},

		/**
		 * Change board shape (only when game is idle)
		 */
		setBoardShape(shape: BoardShape): boolean {
			if (this.game.getStatus() !== "idle") {
				console.warn("Cannot change board shape while game is active");
				return false;
			}

			this.initializeGame(shape);
			return true;
		},

		/**
		 * Calculate territory
		 */
		computeTerritory(): TerritoryResult {
			return this.game.computeTerritory();
		},

		/**
		 * Get neighboring positions (6 directions in 3D)
		 */
		getNeighbors(x: number, y: number, z: number): Array<{ x: number; y: number; z: number }> {
			const neighbors = [
				{ x: x + 1, y, z },
				{ x: x - 1, y, z },
				{ x, y: y + 1, z },
				{ x, y: y - 1, z },
				{ x, y, z: z + 1 },
				{ x, y, z: z - 1 }
			];

			return neighbors.filter((pos) => this.isValidPosition(pos.x, pos.y, pos.z));
		},

		/**
		 * Save game state to session storage
		 */
		saveToSessionStorage(): void {
			try {
				this.game.saveToSessionStorage("trigoGameState");
			} catch (error) {
				console.error("Failed to save game state:", error);
			}
		},

		/**
		 * Load game state from session storage
		 */
		loadFromSessionStorage(): boolean {
			try {
				const success = this.game.loadFromSessionStorage("trigoGameState");
				if (success) {
					console.log("Game state restored from session storage");
				}
				return success;
			} catch (error) {
				console.error("Failed to load game state:", error);
				return false;
			}
		},

		/**
		 * Clear saved game state
		 */
		clearSessionStorage(): void {
			try {
				this.game.clearSessionStorage("trigoGameState");
			} catch (error) {
				console.error("Failed to clear session storage:", error);
			}
		}
	}
});