feat: implement SyncService for filtering and logging asset releases

Services/SyncService.cs

@@ -1,6 +1,53 @@
+using System.Security.Cryptography.X509Certificates;
+using System.Text.RegularExpressions;
+using Microsoft.Extensions.Logging;
+
 namespace ForgejoReleaseSync.Services;
 
-public class SyncService
+public class SyncService(
+    AppConfig config,
+    RepositoryConfig repositoryConfig,
+    GithubService githubService,
+    ILogger<SyncService> logger)
 {
-    
+    private readonly AppConfig _appConfig = config;
+    private readonly GithubService _githubService = githubService;
+
+    public async Task Sync()
+    {
+        logger.LogInformation("Starting Sync Service");
+        logger.LogInformation($"loaded {repositoryConfig.Repositories.Count} repositories");
+        foreach (var repo in repositoryConfig.Repositories)
+        {
+            var repoOwner = repo.GithubUrl.Split('/')[^2]; 
+            var repoName = repo.GithubUrl.Split('/').Last();
+            
+            var includeRegex = new Regex(repo.IncludeAssetsRegex);
+            var excludeRegex = new Regex(repo.ExcludeAssetsRegex);
+            
+            var releases = await _githubService.FetchRepoReleasesAsync(repoOwner, repoName);
+            
+            var lastRelease = releases.LastOrDefault(r => r.Prerelease == false);
+            if (lastRelease is null)
+                continue;
+            
+            var acceptableAssets = lastRelease.Assets
+                .Where(asset =>
+                    includeRegex.IsMatch(asset.Name) &&
+                    !excludeRegex.IsMatch(asset.Name))
+                .ToArray();
+
+            logger.LogInformation(
+                    "Repo {Owner}/{Name}: release: {ReleaseName} has {ReleaseCount} assets with matching assets",
+                    repoOwner,
+                    repoName, 
+                lastRelease.Name,
+                acceptableAssets.Length);
+
+            foreach (var acceptableAsset in acceptableAssets)
+            {
+                logger.LogInformation(acceptableAsset.Name);
+            }
+        }
+    }
 }