PCRB webassembly

MesaFabApproval.API/Controllers/MRBController.cs

@@ -15,10 +15,14 @@ public class MRBController : ControllerBase {
     private readonly IMRBService _mrbService;
     private readonly IMonInWorkerClient _monInClient;
 
+    private readonly string _mrbAttachmentPath;
+
     public MRBController(ILogger<MRBController> logger, IMRBService mrbService, IMonInWorkerClient monInClient) {
         _logger = logger ?? throw new ArgumentNullException("ILogger not injected");
         _mrbService = mrbService ?? throw new ArgumentNullException("IMRBService not injected");
         _monInClient = monInClient ?? throw new ArgumentNullException("IMonInWorkerClient not injected");
+        _mrbAttachmentPath = Environment.GetEnvironmentVariable("FabApprovalMrbAttachmentPath") ??
+            throw new ArgumentNullException("FabApprovalMrbAttachmentPath environment variable not found");
     }
 
     [HttpPost]
@@ -692,6 +696,64 @@ public class MRBController : ControllerBase {
         }
     }
 
+    [AllowAnonymous]
+    [HttpGet]
+    [Route("mrb/actions/csvFile")]
+    public async Task<IActionResult> GetMRBActionsCsvFile(int mrbNumber) {
+        DateTime start = DateTime.Now;
+        bool isArgumentError = false;
+        bool isInternalError = false;
+        string errorMessage = "";
+
+        try {
+            _logger.LogInformation("Attempting to get MRB actions CSC file");
+
+            if (!(await _mrbService.MRBNumberIsValid(mrbNumber)))
+                throw new ArgumentException($"{mrbNumber} is not a valid MRB#");
+
+            string path = $"{_mrbAttachmentPath}\\{mrbNumber}\\mrb{mrbNumber}Actions.csv";
+
+            await _mrbService.ConvertActionsToCsvFile(mrbNumber, path);
+
+            byte[] fs = System.IO.File.ReadAllBytes(path);
+
+            const string defaultContentType = "application/octet-stream";
+
+            FileExtensionContentTypeProvider contentTypeProvider = new FileExtensionContentTypeProvider();
+
+            if (!contentTypeProvider.TryGetContentType(path, out string? contentType)) {
+                contentType = defaultContentType;
+            }
+
+            return new FileContentResult(fs, contentType) {
+                FileDownloadName = $"mrb{mrbNumber}Actions.csv"
+            };
+        } catch (ArgumentException ex) {
+            isArgumentError = true;
+            errorMessage = ex.Message;
+            return BadRequest(errorMessage);
+        } catch (Exception ex) {
+            isInternalError = true;
+            errorMessage = $"Cannot get MRB actions CSC file, because {ex.Message}";
+            return Problem(errorMessage);
+        } finally {
+            string metricName = "GetMRBActionsCSVFile";
+            DateTime end = DateTime.Now;
+            double millisecondsDiff = (end - start).TotalMilliseconds;
+            _monInClient.PostAverage(metricName + "Latency", millisecondsDiff);
+
+            if (isArgumentError) {
+                _logger.LogWarning(errorMessage);
+                _monInClient.PostStatus(metricName, StatusValue.Ok);
+            } else if (isInternalError) {
+                _logger.LogError(errorMessage);
+                _monInClient.PostStatus(metricName, StatusValue.Critical);
+            } else {
+                _monInClient.PostStatus(metricName, StatusValue.Ok);
+            }
+        }
+    }
+
     [HttpDelete]
     [Route("mrb/attach")]
     public async Task<IActionResult> DeleteMRBAttachment(MRBAttachment attachment) {