adding disponibilidade de dados

OpenCand.API/Repository/OpenCandRepository.cs

@@ -7,8 +7,11 @@ using OpenCand.Repository;
 namespace OpenCand.API.Repository
 {    public class OpenCandRepository : BaseRepository
     {
+        private readonly IConfiguration configuration;
+
         public OpenCandRepository(IConfiguration configuration, IMemoryCache? cache = null) : base(configuration, cache)
         {
+            this.configuration = configuration;
         }
 
         public async Task<OpenCandStats> GetOpenCandStatsAsync()
@@ -32,14 +35,48 @@ namespace OpenCand.API.Repository
             });
             
             return result ?? new OpenCandStats();
-        }
-
-        /// <summary>
-        /// Clears the cached OpenCand statistics, forcing a fresh fetch on the next call
-        /// </summary>
-        public void ClearStatsCache()
+        }        public async Task<DataAvailabilityStats> GetDataAvailabilityAsync()
         {
-            ClearCache(GenerateCacheKey("OpenCandStats"));
+            string cacheKey = GenerateCacheKey("DataAvailabilityStats");
+
+            var result = await GetOrSetCacheAsync(cacheKey, async () =>
+            {
+                using (var connection = new NpgsqlConnection(ConnectionString))
+                {
+                    var stats = new DataAvailabilityStats();
+
+                    // Get years for each data type separately
+                    var candidatosYears = await connection.QueryAsync<int>("SELECT DISTINCT ano FROM candidato_mapping ORDER BY ano DESC");
+                    var bemCandidatosYears = await connection.QueryAsync<int>("SELECT DISTINCT ano FROM bem_candidato ORDER BY ano DESC");
+                    var despesaCandidatosYears = await connection.QueryAsync<int>("SELECT DISTINCT ano FROM despesas_candidato ORDER BY ano DESC");
+                    var receitaCandidatosYears = await connection.QueryAsync<int>("SELECT DISTINCT ano FROM receitas_candidato ORDER BY ano DESC");
+                    var redeSocialCandidatosYears = await connection.QueryAsync<int>("SELECT DISTINCT ano FROM rede_social ORDER BY ano DESC");
+
+                    stats.Candidatos = candidatosYears.ToList();
+                    stats.BemCandidatos = bemCandidatosYears.ToList();
+                    stats.DespesaCandidatos = despesaCandidatosYears.ToList();
+                    stats.ReceitaCandidatos = receitaCandidatosYears.ToList();
+                    stats.RedeSocialCandidatos = redeSocialCandidatosYears.ToList();
+
+                    // Get all folders from appsetting `FotosSettings__BasePath`
+                    string basePath = configuration["FotosSettings:Path"] ?? string.Empty;
+                    if (string.IsNullOrEmpty(basePath))
+                        throw new InvalidOperationException("Base path for photos is not configured.");
+
+                    var directories = Directory.GetDirectories(basePath);
+                    if (directories.Any())
+                        stats.FotosCandidatos = directories
+                            .Select(dir => dir.Split(Path.DirectorySeparatorChar).Last().Split("_")[1].Replace("cand", ""))
+                            .Select(ano => Convert.ToInt32(ano))
+                            .Distinct()
+                            .OrderByDescending(ano => ano)
+                            .ToList();
+
+                    return stats;
+                }
+            });
+
+            return result ?? new DataAvailabilityStats();
         }
     }
 }