starting scene expansion

Ficdown.Parser.Tests/BlockHandlerTests.cs

@@ -1,29 +1,6 @@
 namespace Ficdown.Parser.Tests
 {
-    using System;
-    using System.Collections.Generic;
-    using System.Text;
-    using Engine;
-    using Model.Parser;
-    using Model.Story;
-    using ServiceStack.Text;
-    using TestStories;
-    using Xunit;
-
     public class BlockHandlerTests
     {
-        [Fact]
-        public void GoodTestStoryShouldParse()
-        {
-            var lines = Encoding.UTF8.GetString(Resources.the_robot_king).Split(new[] {'\r', '\n'});
-            var handler = new BlockHandler();
-            IEnumerable<Block> blocks = null;
-            Story story = null;
-            Assert.DoesNotThrow(() => blocks = handler.ExtractBlocks(lines));
-            Assert.DoesNotThrow(() => story = handler.ParseBlocks(blocks));
-            Assert.NotNull(story);
-
-            Console.WriteLine(story.Dump());
-        }
     }
 }

Ficdown.Parser.Tests/IntegrationTests.cs

@@ -1,12 +1,21 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
+namespace Ficdown.Parser.Tests
+{
+    using System;
     using System.Text;
-using System.Threading.Tasks;
+    using ServiceStack.Text;
+    using TestStories;
+    using Xunit;
 
-namespace Ficdown.Parser.Tests
+    public class IntegrationTests
     {
-    class IntegrationTests
+        [Fact]
+        public void CanParseValidStoryFile()
         {
+            var parser = new FicdownParser();
+            var storyText = Encoding.UTF8.GetString(Resources.the_robot_king);
+            var story = parser.ParseStory(storyText);
+            Assert.NotNull(story);
+            Console.WriteLine(story.Dump());
+        }
     }
 }

Ficdown.Parser/Engine/BlockHandler.cs

@@ -74,12 +74,7 @@
 
             if (!story.Scenes.ContainsKey(storyTarget))
                 throw new FormatException(string.Format("Story targets non-existent scene: {0}", storyTarget));
-            story.FirstScene =
-                story.Scenes[storyTarget].SingleOrDefault(
-                    s => s.Conditions == null || s.Conditions.All(c => c.StartsWith("!")));
-            if (story.FirstScene == null)
-                throw new FormatException(string.Format("Story targets scene with no unconditional definition: {0}",
-                    storyTarget));
+            story.FirstScene = storyTarget;
 
             return story;
         }

Ficdown.Parser/Engine/SceneLinker.cs

@@ -1,13 +1,18 @@
 namespace Ficdown.Parser.Engine
 {
     using System.Collections.Generic;
+    using System.Linq;
     using System.Text.RegularExpressions;
     using Model.Story;
+    using Model.Story.Extensions;
 
     public class SceneLinker : ISceneLinker
     {
+
         public void ExpandScenes(Story story)
         {
+            VerifySanity(story);
+
             var newScenes = new Dictionary<string, IList<Scene>>();
             foreach(var key in story.Scenes.Keys)
             {
@@ -15,14 +20,72 @@
                 foreach (var scene in story.Scenes[key])
                 {
                     var anchors = RegexLib.Anchors.Matches(scene.Description);
+                    // get a list of all unique condition combinations from the anchors
+                    var uniques = new List<IList<string>>();
                     foreach (Match anchor in anchors)
                     {
                         string target;
                         IList<string> conditions, toggles;
                         Utilities.ParseHref(anchor.Groups["href"].Value, out target, out conditions, out toggles);
+                        if (conditions != null)
+                        {
+                            // union with the conditions required to reach this scene, if any
+                            if (scene.Conditions != null)
+                            {
+                                conditions = conditions.Union(scene.Conditions).ToList();
+                                if (conditions.Count == scene.Conditions.Count)
+                                    continue; //WARN this anchor will never resolve false
+                            }
+
+                            AddUnique(uniques, conditions);
+                        }
+                    }
+                    // resolve the current scene
+                    newScenes[key].Add(ResolveScene(scene, anchors));
+                    // resolve the uniques
+                    foreach (var unique in uniques)
+                    {
+                        var uscene = scene.Clone();
+                        uscene.Conditions = unique;
+                        newScenes[key].Add(ResolveScene(uscene, anchors));
                     }
                 }
             }
+            story.Scenes = newScenes;
+        }
+
+        private void AddUnique(IList<IList<string>> uniques, IList<string> conditions)
+        {
+            // ignore this combo if there's a contradiction
+            if (conditions.Where(c => !c.StartsWith("!"))
+                .Any(c => conditions.Contains(string.Format("!{0}", c))))
+                return; // WARN this anchor will never resolve true
+
+            // make sure this is actually unique
+            if (uniques.Any(u => u.Intersect(conditions).Count() == conditions.Count)) return;
+
+            uniques.Add(conditions);
+
+            // we need to treat this unioned with all other existing uniques as another potential unique
+            var existing = new List<IList<string>>(uniques);
+            foreach (var old in existing)
+            {
+                AddUnique(uniques, old.Union(conditions).ToList());
+            }
+        }
+
+        private Scene ResolveScene(Scene scene, MatchCollection anchors)
+        {
+            foreach (Match anchor in anchors)
+            {
+                var satisfied = Utilities.ConditionsSatisfied(anchor.Groups["conditions"].Value, scene.Conditions);
+            }
+            return scene;
+        }
+
+        private void VerifySanity(Story story)
+        {
+            
         }
     }
 }

Ficdown.Parser/Engine/Utilities.cs

@@ -47,5 +47,10 @@
             }
             else throw new FormatException(string.Format("Invalid href: {0}", href));
         }
+
+        public static bool ConditionsSatisfied(string cquery, IList<string> conditions)
+        {
+            return false;
+        }
     }
 }

Ficdown.Parser/FicDownParser.cs

@@ -1,6 +1,5 @@
 namespace Ficdown.Parser
 {
-    using System.IO;
     using Engine;
     using Model.Story;
 
@@ -21,11 +20,13 @@
             set { _sceneLinker = value; }
         }
 
-        public Story ParseStory(string storyFilePath)
+        public Story ParseStory(string storyText)
         {
-            var lines = File.ReadAllLines(storyFilePath);
+            var lines = storyText.Split('\n');
             var blocks = BlockHandler.ExtractBlocks(lines);
-            return BlockHandler.ParseBlocks(blocks);
+            var story = BlockHandler.ParseBlocks(blocks);
+            SceneLinker.ExpandScenes(story);
+            return story;
         }
     }
 }

Ficdown.Parser/Model/Story/Extensions/SceneExtensions.cs

@@ -10,7 +10,7 @@
             {
                 Name = scene.Name,
                 Description = scene.Description,
-                Conditions = new List<string>(scene.Conditions)
+                Conditions = scene.Conditions == null ? null : new List<string>(scene.Conditions)
             };
         }
     }

Ficdown.Parser/Model/Story/Story.cs

@@ -6,7 +6,7 @@
     {
         public string Name { get; set; }
         public string Description { get; set; }
-        public Scene FirstScene { get; set; }
+        public string FirstScene { get; set; }
         public IDictionary<string, IList<Action>> States { get; set; }
         public IDictionary<string, IList<Scene>> Scenes { get; set; }
     }