add download option to log view

docs/release-notes.md

@@ -13,6 +13,7 @@
   * Improved translations. Thanks to ChulkyBow (added Ukrainian)!
 
 * For the web UI:
+  * Added log download option.
   * Fixed log parser not correctly handling multiple mods having the exact same name.
 
 ## 3.13.2

src/SMAPI.Web/Controllers/LogParserController.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Linq;
+using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using StardewModdingAPI.Toolkit.Utilities;
@@ -39,24 +40,42 @@ namespace StardewModdingAPI.Web.Controllers
         ***/
         /// <summary>Render the log parser UI.</summary>
         /// <param name="id">The stored file ID.</param>
-        /// <param name="raw">Whether to display the raw unparsed log.</param>
+        /// <param name="format">How to render the log view.</param>
         /// <param name="renew">Whether to reset the log expiry.</param>
         [HttpGet]
         [Route("log")]
         [Route("log/{id}")]
-        public async Task<ViewResult> Index(string id = null, bool raw = false, bool renew = false)
+        public async Task<ActionResult> Index(string id = null, LogViewFormat format = LogViewFormat.Default, bool renew = false)
         {
             // fresh page
             if (string.IsNullOrWhiteSpace(id))
                 return this.View("Index", this.GetModel(id));
 
-            // log page
+            // fetch log
             StoredFileInfo file = await this.Storage.GetAsync(id, renew);
-            ParsedLog log = file.Success
-                ? new LogParser().Parse(file.Content)
-                : new ParsedLog { IsValid = false, Error = file.Error };
 
-            return this.View("Index", this.GetModel(id, uploadWarning: file.Warning, expiry: file.Expiry).SetResult(log, raw));
+            // render view
+            switch (format)
+            {
+                case LogViewFormat.Default:
+                case LogViewFormat.RawView:
+                    {
+                        ParsedLog log = file.Success
+                            ? new LogParser().Parse(file.Content)
+                            : new ParsedLog { IsValid = false, Error = file.Error };
+
+                        return this.View("Index", this.GetModel(id, uploadWarning: file.Warning, expiry: file.Expiry).SetResult(log, showRaw: format == LogViewFormat.RawView));
+                    }
+
+                case LogViewFormat.RawDownload:
+                    {
+                        string content = file.Error ?? file.Content;
+                        return this.File(Encoding.UTF8.GetBytes(content), "plain/text", $"SMAPI log ({id}).txt");
+                    }
+
+                default:
+                    throw new InvalidOperationException($"Unknown log view format '{format}'.");
+            }
         }
 
         /***

src/SMAPI.Web/ViewModels/LogViewFormat.cs

@@ -0,0 +1,15 @@
+namespace StardewModdingAPI.Web.ViewModels
+{
+    /// <summary>How a log file should be displayed.</summary>
+    public enum LogViewFormat
+    {
+        /// <summary>Render a parsed log and metadata.</summary>
+        Default,
+
+        /// <summary>Render a raw log with parsed metadata.</summary>
+        RawView,
+
+        /// <summary>Render directly as a text file.</summary>
+        RawDownload
+    }
+}

src/SMAPI.Web/Views/LogParser/Index.cshtml

@@ -2,6 +2,7 @@
 @using StardewModdingAPI.Toolkit.Utilities
 @using StardewModdingAPI.Web.Framework
 @using StardewModdingAPI.Web.Framework.LogParsing.Models
+@using StardewModdingAPI.Web.ViewModels
 @model StardewModdingAPI.Web.ViewModels.LogParserModel
 
 @{
@@ -338,14 +339,24 @@ else if (Model.ParsedLog?.IsValid == true)
                     }
                 }
             </table>
-
-            <small><a href="@this.Url.PlainAction("Index", "LogParser", new { id = Model.PasteID, raw = true })">view raw log</a></small>
         }
         else
         {
             <pre v-pre>@Model.ParsedLog.RawText</pre>
-            <small><a href="@this.Url.PlainAction("Index", "LogParser", new { id = Model.PasteID })">view parsed log</a></small>
         }
+
+        <small>
+            @if (Model.ShowRaw)
+            {
+                <a href="@this.Url.PlainAction("Index", "LogParser", new { id = Model.PasteID })">view parsed log</a>
+            }
+            else
+            {
+                <a href="@this.Url.PlainAction("Index", "LogParser", new { id = Model.PasteID, format = LogViewFormat.RawView })">view raw log</a>
+            }
+            
+            | <a href="@this.Url.PlainAction("Index", "LogParser", new { id = Model.PasteID, format = LogViewFormat.RawDownload })" download>download</a>
+        </small>
     </div>
 }
 else if (Model.ParsedLog?.IsValid == false)