Move output to context

70_Poetry/csharp/Context.cs

@@ -2,10 +2,86 @@ namespace Poetry;
 
 internal class Context
 {
+    private readonly IReadWrite _io;
+    private readonly IRandom _random;
+
+    public Context(IReadWrite io, IRandom random)
+    {
+        _io = io;
+        _random = random;
+    }
+
     public int I { get; set; }
     public int J { get; set; }
     public int K { get; set; }
     public int U { get; set; }
     public bool SkipComma { get; set; }
     public bool UseGroup2 { get; set; }
+    public bool ShouldIndent => U == 0 && J % 2 == 0;
+    public bool GroupNumberIsValid => J < 5;
+
+    public void WritePhrase()
+    {
+        Phrase.GetPhrase(this).Write(_io, this);
+    }
+
+    public void MaybeWriteComma()
+    {
+        if (!SkipComma && _random.NextFloat() <= 0.19F && U != 0)
+        {
+            _io.Write(",");
+            U = 2;
+        }
+        SkipComma = false;
+    }
+
+    public void WriteSpaceOrNewLine()
+    {
+        if (_random.NextFloat() <= 0.65F)
+        {
+            _io.Write(" ");
+            U += 1;
+        }
+        else
+        {
+            _io.WriteLine();
+            U = 0;
+        }
+    }
+
+    public void Update(IRandom random)
+    {
+        I = random.Next(1, 6);
+        J += 1;
+        K += 1;
+    }
+
+    public void MaybeIndent()
+    {
+        if (U == 0 && J % 2 == 0)
+        {
+            _io.Write("     ");
+        }
+    }
+    
+    public void ResetGroup(IReadWrite io)
+    {
+        J = 0;
+        io.WriteLine();
+    }
+
+    public bool MaybeCompleteStanza()
+    {
+        if (K > 20)
+        {
+            _io.WriteLine();
+            U = K = 0;
+            UseGroup2 = true;
+            return true;
+        }
+
+        return false;
+    }
+
+    public void SkipNextComma() => SkipComma = true;
 }