Output English loc as fallback for keys unlocalized in secondary lang…

…uages (#1454)

ImperatorToCK3/ImperatorToCK3.csproj

@@ -32,7 +32,7 @@
     <PackageReference Include="Magick.NET-Q16-AnyCPU" Version="13.2.0" />
     <PackageReference Include="NAudio" Version="2.1.0" />
     <PackageReference Include="NAudio.Vorbis" Version="1.5.0" />
-    <PackageReference Include="PGCG.commonItems" Version="8.1.6" />
+    <PackageReference Include="PGCG.commonItems" Version="8.2.0" />
     <PackageReference Include="PGCG.commonItems.SourceGenerators" Version="1.0.3" />
     <PackageReference Include="SixLabors.ImageSharp" Version="3.0.1" />
   </ItemGroup>

ImperatorToCK3/Outputter/LocalizationOutputter.cs

@@ -1,4 +1,5 @@
 using commonItems;
+using commonItems.Localization;
 using commonItems.Mods;
 using ImperatorToCK3.CK3;
 using System.Collections.Generic;
@@ -67,5 +68,52 @@ public static void OutputLocalization(ModFilesystem irModFS, string outputName,
 				}
 			}
 		}
+
+		OutputFallbackLockForMissingSecondaryLanguageLoc(baseLocDir, ck3World.ModFS);
+	}
+
+	private static void OutputFallbackLockForMissingSecondaryLanguageLoc(string baseLocDir, ModFilesystem ck3ModFS) {
+		var primaryLanguage = ConverterGlobals.PrimaryLanguage;
+		var secondaryLanguages = ConverterGlobals.SecondaryLanguages;
+
+		var ck3LocDB = new LocDB(primaryLanguage, secondaryLanguages);
+		ck3LocDB.ScrapeLocalizations(ck3ModFS);
+
+		var languageToLocLinesDict = new Dictionary<string, List<string>>();
+		foreach (var language in secondaryLanguages) {
+			languageToLocLinesDict[language] = new List<string>();
+		}
+
+		foreach (var locBlock in ck3LocDB) {
+			if (!locBlock.HasLocForLanguage(primaryLanguage)) {
+				continue;
+			}
+
+			foreach (var secondaryLanguage in secondaryLanguages) {
+				if (locBlock.HasLocForLanguage(secondaryLanguage)) {
+					continue;
+				}
+
+				languageToLocLinesDict[secondaryLanguage].Add(locBlock.GetYmlLocLineForLanguage(primaryLanguage));
+			}
+		}
+
+		foreach (var language in secondaryLanguages) {
+			var linesToOutput = languageToLocLinesDict[language];
+			if (linesToOutput.Count == 0) {
+				continue;
+			}
+
+			Logger.Debug($"Outputting {linesToOutput.Count} fallback loc lines for {language}...");
+
+			var locFilePath = Path.Combine(baseLocDir, $"{language}/irtock3_fallback_loc_l_{language}.yml");
+			using var locFileStream = File.OpenWrite(locFilePath);
+			using var locWriter = new StreamWriter(locFileStream, System.Text.Encoding.UTF8);
+
+			locWriter.WriteLine($"l_{language}:");
+			foreach (var line in linesToOutput) {
+				locWriter.WriteLine(line);
+			}
+		}
 	}
 }