Bug report changes (#7709)

* android: dump logcat to file
* Update .github/ISSUE_TEMPLATE/bug_report.md

Co-authored-by: Frans de Jonge <fransdejonge@gmail.com>

.github/ISSUE_TEMPLATE/bug_report.md

@@ -23,8 +23,8 @@ normally be found in the KOReader directory:
 * `.adds/koreader/` directory for Kobo
 * `applications/koreader/` directory for Pocketbook
 
-Android won't have a crash.log file because Google restricts what apps can log, so you'll need to obtain logs using `adb logcat KOReader:I ActivityManager:* AndroidRuntime:* DEBUG:* *:F`.
 
+Android logs are kept in memory. Please go to Help → Bug Report to save these logs to a file.
 
 Please try to include the relevant sections in your issue description.
 You can upload the whole `crash.log` file on GitHub by dragging and
@@ -33,7 +33,7 @@ dropping it onto this textbox.
 If you instead opt to inline it, please do so behind a spoiler tag:
 <details>
   <summary>crash.log</summary>
-  
+
 ```
 <Paste crash.log content here>
 ```

frontend/ui/elements/common_info_menu_table.lua

@@ -53,10 +53,26 @@ common_info.about = {
 common_info.report_bug = {
     text = _("Report a bug"),
     keep_menu_open = true,
-    callback = function()
+    callback_func = function()
+        local DataStorage = require("datastorage")
+        local log_path = string.format("%s/%s", DataStorage:getDataDir(), "crash.log")
+        local common_msg = T(_("Please report bugs to \nhttps://github.com/koreader/koreader/issues\n\nVersion:\n%1\n\nDetected device:\n%2"),
+            Version:getCurrentRevision(), Device:info())
+        local log_msg = T(_("Attach %1 to your bug report."), log_path)
+
+        if Device:isAndroid() then
+            local android = require("android")
+            android.dumpLogs(log_path)
+        end
+
+        local msg
+        if lfs.attributes(log_path, "mode") == "file" then
+            msg = string.format("%s\n\n%s", common_msg, log_msg)
+        else
+            msg = common_msg
+        end
         UIManager:show(InfoMessage:new{
-            text = T(_("Please report bugs to \nhttps://github.com/koreader/koreader/issues\n\nVersion:\n%1\n\nDetected device:\n%2"),
-                Version:getCurrentRevision(), Device:info()),
+            text = msg,
         })
     end
 }