Process book records correctly

Records.cs

@@ -71,7 +71,7 @@ namespace Txt2Bib.Records
 
         public override string ToString()
         {
-            return $"@{Type}{{{Author[0][..5]}_{Year},\n" +
+            return $"@{Type}{{{Author[0][..5].Replace(". ", "_")}_{Year},\n" +
                 $"\tauthor = \"{string.Join(" and ", Author)}\",\n" +
                 $"\ttitle = {{{Title}}},\n" +
                 $"\tjournal = \"{Journal}\",\n" +
@@ -88,7 +88,8 @@ namespace Txt2Bib.Records
     public record class BookBib : IBib
     {
         public string Type { get; init; } = "book";
-        public string[] Author { get; set; } = { "Gianni e Pinotto" };
+        public string[] Author { get; set; } = Array.Empty<string>();
+        public string[] Editor { get; set; } = Array.Empty<string>();
         public string Title { get; set; } = "";
         public ushort Year { get; set; } = 1950;
         public string Publisher { get; set; } = "";
@@ -104,7 +105,15 @@ namespace Txt2Bib.Records
                 var s = a.Split(' ');
                 return $"{s[1]} {s[0]}";
             };
-            Author = entryLines[1].Split(',').Select(a => rearrange(a)).ToArray();
+            var auths = entryLines[1];
+            if (auths.Contains("eds"))
+            {
+                Editor = auths.Replace("(eds.)", "").Split(',').Select(a => rearrange(a)).ToArray();
+            }
+            else
+            {
+                Author = auths.Split(',').Select(a => rearrange(a)).ToArray();
+            }
             Year = ushort.Parse(entryLines[2]);
             Title = entryLines[3];
             Place = entryLines[4];
@@ -126,13 +135,28 @@ namespace Txt2Bib.Records
 
         public override string ToString()
         {
-            return $"@{Type}{{{Author[0][..5]}_{Year},\n" +
+            var label = "";
-                $"\tauthor = \"{string.Join(" and ", Author)}\",\n" +
+            var authString = "";
+
+            if (Author.Length != 0)
+            {
+                label = Author[0][..5].Replace(". ", "");
+                authString = $"\tauthor = \"{string.Join(" and ", Author)}\",\n";
+            }
+            else
+            {
+                label = Editor[0][..5].Replace(". ", "");
+                authString = $"\teditor = \"{string.Join(" and ", Editor)}\",\n";
+            }
+
+            return $"@{Type}{{{label}_{Year},\n" +
+                authString +
                 $"\ttitle = {{{Title}}},\n" +
                 $"\tpublisher = \"{Publisher}\",\n" +
                 $"\taddress = \"{Place}\",\n" +
                 $"\tyear = \"{Year}\",\n" +
                 $"\turl = \"{Url}\",\n" +
+                $"\tdoi = \"{Doi}\",\n" +
                 "}\n";
         }
     }

Text2Bib.cs

@@ -77,8 +77,7 @@ namespace Txt2Bib
 
             if (!IsValidEntry(type)) throw new Exception($"Invalid entry type '{type}'");
 
-            string citation = "";
+            string citation;
-
             try
             {
                 citation = type switch