From 4b243574657f9054f1b915b0102997a038fc0925 Mon Sep 17 00:00:00 2001
From: Chris <github@nsaas.io>
Date: Mon, 24 Jan 2022 17:33:39 -0700
Subject: [PATCH] move log to standard location

---
 README.md                       | 10 ++++++----
 src/MinEdLauncher/Extensions.fs | 26 ++++++++++++++++++--------
 src/MinEdLauncher/Log.fs        |  2 +-
 3 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/README.md b/README.md
index 8155838..70d3a8b 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ accounts on both Windows and Linux.
     * [Multi-Account]
         * [Frontier account via Steam or Epic]
         * [Epic account via Steam]
-    * [Logs]
+    * [Troubleshooting]
     * [Cache]
 * [Build]
     * [Release Artifacts]    
@@ -228,8 +228,10 @@ In order to authenticate with an Epic account:
    to include the `-auth_password=code` argument. `steam://rungameid/359320// -auth_password=code` The two trailing slashes are important. Then just
    edit this shortcut with the new exchange code each time instead of changing your Steam launch options.
 
-### Logs
-Debug logging is placed in the file `logs/min-ed-launcher.log`
+### Troubleshooting
+Debug logging is placed in the standard log location for your operating system:
+* Windows - `%LOCALAPPDATA%\min-ed-launcher\min-ed-launcher.log`
+* Linux - `$XDG_STATE_HOME/min-ed-launcher/min-ed-launcher.log` (`~/.local/state` if `$XDG_STATE_HOME` isn't set)
 
 ### Cache
 When updating your game files, the launcher downloads updates into a temporary directory. You may delete these files at any time.
@@ -275,7 +277,7 @@ specifically targets Windows and won't publish on a non-Windows machine.
 [Multi-Account]: #multi-account
 [Frontier account via Steam or Epic]: #frontier-account-via-steam-or-epic
 [Epic account via Steam]: #epic-account-via-steam
-[Logs]: #logs
+[Troubleshooting]: #troubleshooting
 [Cache]: #cache
 [Build]: #build
 [Release Artifacts]: #release-artifacts
diff --git a/src/MinEdLauncher/Extensions.fs b/src/MinEdLauncher/Extensions.fs
index bd7bcfb..db50c55 100644
--- a/src/MinEdLauncher/Extensions.fs
+++ b/src/MinEdLauncher/Extensions.fs
@@ -471,6 +471,16 @@ module Environment =
     
     [<Literal>]
     let private AppFolderName = "min-ed-launcher"
+    let private home = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile)
+    let private xdgDir var fallback =
+        let xdgPath = Environment.GetEnvironmentVariable($"XDG_%s{var}")
+        if String.IsNullOrEmpty(xdgPath) then
+            Path.Combine(fallback, AppFolderName)
+        else
+            Path.Combine(xdgPath, AppFolderName)
+    let private localAppData subDir =
+        let appData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)
+        Path.Combine(appData, AppFolderName, subDir)
     
     let configDir =
         let specialFolder =
@@ -484,13 +494,13 @@ module Environment =
         
     let cacheDir =
         if RuntimeInformation.IsOSPlatform(OSPlatform.Windows) then
-            let appData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)
-            Path.Combine(appData, AppFolderName, "cache")
+            localAppData "cache"
         else
-            let xdgCacheHome = Environment.GetEnvironmentVariable("XDG_CACHE_HOME")
-            if String.IsNullOrEmpty(xdgCacheHome) then
-                let home = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile)
-                Path.Combine(home, ".cache", AppFolderName)
-            else
-                Path.Combine(xdgCacheHome, AppFolderName)
+            xdgDir "CACHE_HOME" (Path.Combine(home, ".cache"))
+                
+    let logDir =
+        if RuntimeInformation.IsOSPlatform(OSPlatform.Windows) then
+            localAppData ""
+        else
+            xdgDir "STATE_HOME" (Path.Combine(home, ".local", "state"))
         
\ No newline at end of file
diff --git a/src/MinEdLauncher/Log.fs b/src/MinEdLauncher/Log.fs
index 3f25124..84c88be 100644
--- a/src/MinEdLauncher/Log.fs
+++ b/src/MinEdLauncher/Log.fs
@@ -52,7 +52,7 @@ type LoggerSinkConfiguration with
         let formatter = EpicScrubber(MessageTemplateTextFormatter("{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] {Message:lj}{NewLine}{Exception}", null))
         this.File(formatter = formatter, path=path, restrictedToMinimumLevel=restrictedToMinimumLevel)
 
-let logPath = Path.Combine("logs/min-ed-launcher.log")
+let private logPath = Path.Combine(Environment.logDir, "min-ed-launcher.log")
 let logger =
   let consoleLevel =
 #if DEBUG