[issue #139] client lookup and stats api

Plugins/Web/StatsWeb/API/StatsController.cs

@@ -0,0 +1,69 @@
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using SharedLibraryCore;
+using SharedLibraryCore.Dtos;
+using SharedLibraryCore.Interfaces;
+using Stats.Dtos;
+using System;
+using System.Threading.Tasks;
+
+namespace StatsWeb.API
+{
+    [ApiController]
+    [Route("api/stats")]
+    public class StatsController : ControllerBase
+    {
+        private readonly ILogger _logger;
+        private readonly IResourceQueryHelper<StatsInfoRequest, StatsInfoResult> _statsQueryHelper;
+
+        public StatsController(ILogger logger, IResourceQueryHelper<StatsInfoRequest, StatsInfoResult> statsQueryHelper)
+        {
+            _statsQueryHelper = statsQueryHelper;
+            _logger = logger;
+        }
+
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status400BadRequest)]
+        [ProducesResponseType(StatusCodes.Status500InternalServerError)]
+        [HttpGet("{clientId}")]
+        public async Task<IActionResult> ClientStats(int clientId)
+        {
+            if (clientId < 1 || !ModelState.IsValid)
+            {
+                return BadRequest(new ErrorResponse
+                {
+                    Messages = new[] { $"Client Id must be between 1 and {int.MaxValue}" }
+                });
+
+            }
+
+            var request = new StatsInfoRequest()
+            {
+                ClientId = clientId
+            };
+
+            try
+            {
+                var result = await _statsQueryHelper.QueryResource(request);
+
+                if (result.RetrievedResultCount == 0)
+                {
+                    return NotFound();
+                }
+
+                return Ok(result.Results);
+            }
+
+            catch (Exception e)
+            {
+                _logger.WriteWarning($"Could not get client stats for client id {clientId}");
+                _logger.WriteDebug(e.GetExceptionInfo());
+
+                return StatusCode(StatusCodes.Status500InternalServerError, new ErrorResponse
+                {
+                    Messages = new[] { e.Message }
+                });
+            }
+        }
+    }
+}