namespace Ficdown.Parser.Parser { using System; using System.Collections.Generic; using System.Linq; using System.Text; using Model.Parser; using Model.Player; using Model.Story; internal class StateResolver : IStateResolver { private static readonly Random _random = new Random((int) DateTime.Now.Ticks); private readonly IDictionary _pageNames; private readonly HashSet _usedNames; private Story _story; public StateResolver() { _pageNames = new Dictionary(); _usedNames = new HashSet(); } public ResolvedStory Resolve(IEnumerable pages, Story story) { _story = story; return new ResolvedStory { Name = story.Name, Description = story.Description, FirstPage = GetPageNameForHash(pages.Single(p => p.Id.Equals(Guid.Empty)).CompressedHash), Pages = pages.Select( page => new ResolvedPage { Name = GetPageNameForHash(page.CompressedHash), Content = ResolveDescription(page), ActiveToggles = GetStateDictionary(page).Where(t => t.Value).Select(t => t.Key) }).ToList() }; } private string ResolveAnchor(string blockName, int lineNumber, Anchor anchor, IDictionary playerState, string targetHash) { var text = anchor.Text; if (anchor.Href.Conditions != null) { var satisfied = Utilities.GetInstance(blockName, lineNumber).ConditionsMet(playerState, anchor.Href.Conditions); var alts = Utilities.GetInstance(blockName, lineNumber).ParseConditionalText(anchor); var replace = alts[satisfied]; text = RegexLib.EscapeChar.Replace(replace, string.Empty); } return !string.IsNullOrEmpty(text) && !string.IsNullOrEmpty(targetHash) ? string.Format("[{0}](/{1})", text, GetPageNameForHash(targetHash)) : text; } private string ResolveDescription(PageState page) { var resolved = new StringBuilder(); if(!string.IsNullOrEmpty(page.Scene.Name)) resolved.AppendFormat("## {0}\n\n", page.Scene.Name); var firstToggleCounter = 0; for (var i = 0; i < page.State.ActionsToShow.Count; i++) { if (page.State.ActionsToShow[i]) { var actionTuple = _story.Actions.Single(a => a.Value.Id == i + 1); var actionAnchors = Utilities.GetInstance(page.Scene.Name, page.Scene.LineNumber).ParseAnchors(actionTuple.Value.RawDescription); var anchorDict = GetStateDictionary(page); if ( actionAnchors.Any( a => a.Href.Conditions != null && a.Href.Conditions.ContainsKey(actionTuple.Key))) { if (page.State.ActionFirstToggles[firstToggleCounter++]) { anchorDict[actionTuple.Key] = false; } } resolved.AppendFormat("{0}\n\n", actionAnchors.Aggregate(actionTuple.Value.Description, (current, anchor) => current.Replace(anchor.Original, ResolveAnchor(page.Scene.Name, page.Scene.LineNumber, anchor, anchorDict, page.Links.ContainsKey(anchor.Original) ? page.Links[anchor.Original] : null)))); } } var anchors = Utilities.GetInstance(page.Scene.Name, page.Scene.LineNumber).ParseAnchors(page.Scene.RawDescription); var stateDict = GetStateDictionary(page); var text = RegexLib.EmptyListItem.Replace( anchors.Aggregate(page.Scene.Description, (current, anchor) => current.Replace(anchor.Original, ResolveAnchor(page.Scene.Name, page.Scene.LineNumber, anchor, stateDict, page.Links.ContainsKey(anchor.Original) ? page.Links[anchor.Original] : null))), string.Empty); var seen = page.State.ScenesSeen[page.Scene.Id - 1]; resolved.Append(!seen ? RegexLib.BlockQuoteToken.Replace(text, string.Empty) : RegexLib.BlockQuotes.Replace(text, string.Empty)); return resolved.ToString(); } public static IDictionary GetStateDictionary(PageState page) { return page.StateMatrix.Where(matrix => page.State.PlayerState[matrix.Value]) .ToDictionary(m => m.Key, m => true); } private string GetPageNameForHash(string hash) { if (!_pageNames.ContainsKey(hash)) { string name; do { name = RandomString(8); } while (_usedNames.Contains(name)); _pageNames.Add(hash, name); _usedNames.Add(name); } return _pageNames[hash]; } private string RandomString(int size) { var builder = new StringBuilder(); for (int i = 0; i < size; i++) { char ch = Convert.ToChar(Convert.ToInt32(Math.Floor(26*_random.NextDouble() + 65))); builder.Append(ch); } return builder.ToString(); } } }