Merge pull request 'Major changes in package acquisition' (#4) from refactor/packageAcquisition into dev

Reviewed-on: #4

src/Pacserver.Tests/checkForNewerStuffTest.cs

@@ -22,8 +22,8 @@ public class checkForNewerStuffTest {
         utils.readPacmanConfig();
 
         // Act
-        utils.getEveryPackageNameAndVersionViaFolderName("/tmp/before_update.txt");
-        utils.getEveryPackageNameAndVersionViaFolderName("/tmp/after_update.txt");
+        utils.getEveryPackageNameAndVersion("before", "/tmp/packages_before.txt");
+        utils.getEveryPackageNameAndVersion("after", "/tmp/packages_after.txt");
 
         // Assert
         File.Exists("/tmp/before_update.txt").Should().BeTrue();
@@ -35,7 +35,7 @@ public class checkForNewerStuffTest {
         // Arrange
         PacserverUtils utils = new PacserverUtils();
         utils.readPacmanConfig();
-        utils.getEveryPackageNameAndVersionViaFolderName("/tmp/before_update.txt");
+        utils.getEveryPackageNameAndVersion("before", "/tmp/packages_before.txt");
 
         // Act
         List<String> packageList = utils.packageNamesAndVersion;
@@ -52,7 +52,7 @@ public class checkForNewerStuffTest {
         utils.pacmanDatabaseDirectory = "/tmp/";
 
         // Act
-        Action act = () => utils.getEveryPackageNameAndVersionViaFolderName("/tmp/before_update.txt");
+        Action act = () => utils.getEveryPackageNameAndVersion("before", "/tmp/packages_before.txt");
 
         // Assert
         act.Should().Throw<Exception>().WithMessage("How did you execute this without any packages?");

src/Pacserver/Pacserver.cs

@@ -37,16 +37,49 @@ public class PacserverUtils {
     }
 
     public List<String> packageNamesAndVersion = new List<String>();
-    public void getEveryPackageNameAndVersionViaFolderName(string filePath) {
-        string[] directories = Directory.GetDirectories(pacmanDatabaseDirectory + "local/");
-        foreach (string directory in directories) {
-            packageNamesAndVersion.Add(new DirectoryInfo(directory).Name);
+    public void getEveryPackageNameAndVersion(string mode, string filePath) {
+        Regex regex = new Regex(@".+\.pkg\.tar\.zst$");
+
+        if (Directory.Exists(pacmanCacheDirectory)) {
+            if (Directory.GetFiles(pacmanCacheDirectory) is not null) {
+                packageNamesAndVersion = Directory.GetFiles(pacmanCacheDirectory).Where(file => regex.IsMatch(file)).ToList();
+            } else {
+                Console.WriteLine("No packages found in pacman cache");
+            }
+        } else {
+            Console.WriteLine("No pacman cache directory found");
         }
 
-        if (packageNamesAndVersion.Capacity > 0) {
-            File.WriteAllLines(filePath, packageNamesAndVersion);
-        } else {
-            throw new Exception("How did you execute this without any packages?");
+        switch (mode) {
+            case "before":
+                writePackageNamesAndVersionToFile(filePath);
+                break;
+            case "after":
+                writePackageNamesAndVersionToFile(filePath);
+                break;
+            default:
+                throw new ArgumentException("No valid mode was given. Valid modes are before and after");
+        }
+    }
+
+    public void writePackageNamesAndVersionToFile(string filePath) {
+        if (!File.Exists(filePath)) {
+            using (File.Open(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite)) {
+                using (StreamWriter sw = new StreamWriter(filePath)) {
+                    foreach (string package in packageNamesAndVersion) {
+                        sw.WriteLine(package);
+                    }
+                }
+            }
+        } else if (File.Exists(filePath)) {
+            File.Delete(filePath);
+            using (File.Open(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite)) {
+                using (var sw = new StreamWriter(filePath)) {
+                    foreach (string package in packageNamesAndVersion) {
+                        sw.WriteLine(package);
+                    }
+                }
+            }
         }
     }
 
@@ -85,8 +118,9 @@ public class PacserverUtils {
                 }
             }
         } else if (File.Exists(filePath)) {
-            using (File.Open(filePath, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite)) {
-                using (var sw = new StreamWriter(filePath, true)) {
+            File.Delete(filePath);
+            using (File.Open(filePath, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite)) {
+                using (var sw = new StreamWriter(filePath)) {
                     sw.WriteLine(database + " " + File.GetLastAccessTime(database));
                 }
             }

src/Pacserver/Program.cs

@@ -19,14 +19,14 @@ public class Program {
                 break;
             case "packagesBefore":
                 utils.readPacmanConfig();
-                utils.getEveryPackageNameAndVersionViaFolderName("/tmp/before_update.txt");
+                utils.getEveryPackageNameAndVersion("before", "/tmp/packages_before.txt");
                 break;
             case "packagesAfter":
                 utils.readPacmanConfig();
-                utils.getEveryPackageNameAndVersionViaFolderName("/tmp/after_update.txt");
+                utils.getEveryPackageNameAndVersion("after", "/tmp/packages_after.txt");
                 break;
             case "diffPackages":
-                utils.diff("/tmp/before_update.txt", "/tmp/after_update.txt");
+                utils.diff("/tmp/packages_before.txt", "/tmp/packages_after.txt");
                 string packages = string.Join("\n", utils.diffOfPackagesOrDatabases);
                 Console.WriteLine(packages);
                 break;
@@ -49,6 +49,12 @@ public class Program {
                 string filteredDatabases = string.Join("\n", utils.databasesToTransfer);
                 Console.WriteLine(filteredDatabases);
                 break;
+            case "getEveryPackageInCache":
+                utils.readPacmanConfig();
+                utils.getEveryPackageNameAndVersion("before", "/tmp/packages_before.txt");
+                string allPackages = string.Join("\n", utils.packageNamesAndVersion);
+                Console.WriteLine(allPackages);
+                break;
             default:
                 Console.ForegroundColor = ConsoleColor.Red;
                 Console.WriteLine(args[0] + " is not a recognized option.");