Docker Compose bot + Google Api

LaDOSE.Src/LaDOSE.Service/Interface/ISheetsWriter.cs

@@ -0,0 +1,26 @@
+using System.Threading;
+using System.Threading.Tasks;
+using LaDOSE.Entity;
+
+namespace LaDOSE.Business.Interface
+{
+    /// <summary>
+    /// Writes tabular data into a Google Spreadsheet. Startup picks one implementation from
+    /// GoogleSheets:Writer, so nothing above this interface knows how Google is reached.
+    ///
+    /// Implementations must be idempotent: writing the same request twice leaves the same
+    /// spreadsheet. They must also leave tabs they were not asked about completely alone —
+    /// the spreadsheet holds hand-made summaries and charts, and deletion is irreversible
+    /// through the API.
+    /// </summary>
+    public interface ISheetsWriter
+    {
+        /// <summary>Reported to the UI so the panel can say what it is talking to.</summary>
+        string Name { get; }
+
+        /// <summary>False when credentials are missing, so the API can answer 503 with a message.</summary>
+        bool IsConfigured { get; }
+
+        Task<SheetExportResult> WriteTablesAsync(SheetExportRequest request, CancellationToken ct = default);
+    }
+}