using System.Collections.Generic;
using Minesweeper.Core;

namespace Minesweeper.Presentation.ReadModels
{
    public sealed class GameReadModel : IGameReadModel
    {
        private readonly IBoardService boardService;
        private readonly IGameSettingsService settingsService;
        private readonly IGameStateService gameStateService;

        public GameReadModel(IBoardService boardService, IGameSettingsService settingsService, IGameStateService gameStateService)
        {
            this.boardService = boardService;
            this.settingsService = settingsService;
            this.gameStateService = gameStateService;
        }

        public GameState State => gameStateService.Current;
        public int Width => boardService.Width > 0 ? boardService.Width : settingsService.SizeX;
        public int Height => boardService.Height > 0 ? boardService.Height : settingsService.SizeY;
        public int MinesCount => boardService.MinesCount > 0 ? boardService.MinesCount : settingsService.MinesCount;
        public int FlaggedCellsCount => CountFlaggedCells();
        public int RemainingMinesCount => MinesCount - FlaggedCellsCount;

        public bool TryGetCell(int x, int y, out BoardCellData cell)
        {
            return boardService.TryGetCell(x, y, out cell);
        }

        public IReadOnlyList<BoardCellData> GetCells()
        {
            return boardService.GetCells();
        }

        private int CountFlaggedCells()
        {
            var cells = boardService.GetCells();
            var count = 0;
            for (var i = 0; i < cells.Count; i++)
            {
                if (cells[i].IsFlagged)
                {
                    count++;
                }
            }

            return count;
        }
    }
}