From 16f68c16b469aab10ef468a41e3f219afbcea6d1 Mon Sep 17 00:00:00 2001
From: Simon Symeonidis <lethaljellybean@gmail.com>
Date: Sat, 24 Apr 2021 14:44:42 -0400
Subject: [PATCH] Add log contents in the info dialog

---
 source/app/log.cpp            | 24 ++++++++++++++++++++----
 source/app/log.h              |  1 +
 source/build/main.cpp         |  2 ++
 source/dialogs/infodialog.cpp | 13 +++++++++++--
 4 files changed, 34 insertions(+), 6 deletions(-)

diff --git a/source/app/log.cpp b/source/app/log.cpp
index 424f57de..5b915cc0 100644
--- a/source/app/log.cpp
+++ b/source/app/log.cpp
@@ -22,23 +22,40 @@
 #include <fstream>
 #include <sstream>
 #include <iostream>
+#include <mutex>
 
 namespace Log {
 // destructor should close the file when main exits
 // note: might not capture critical errors, but this should be a good
 // enought start...
 std::ofstream logFile(Paths::getLogPath().string(),
-                      std::ofstream::out);
+                      std::ofstream::app);
+
+// since Log::Output will capture anything that is coming in from
+// qDebug and friends, we might intercept messages asynchronously and
+// may result in data races around logFile
+std::mutex logFileMutex;
+
+std::string logContents() {
+    std::ifstream file(Paths::getLogPath().string());
+    std::cout << std::string(Paths::getLogPath().string()) << std::endl;
+    std::stringstream ss;
+    ss << file.rdbuf();
+    return ss.str();
+}
 
 void Output(QtMsgType type, const QMessageLogContext &context, const QString &msg)
 {
+    // Since this intercepts
+    std::lock_guard lock(logFileMutex);
+
     QByteArray localMsg = msg.toLocal8Bit();
     const char *file = context.file ? context.file : "";
     const char *function = context.function ? context.function : "";
 
     std::string timestamp;
     {
-        char output[128] = {0};
+        char output[64] = {0};
         const auto now = std::time(0);
         const auto *tmp = localtime(&now);
         strftime(output, sizeof(output), "%Y/%m/%dT%H:%M:%S", tmp);
@@ -49,7 +66,6 @@ void Output(QtMsgType type, const QMessageLogContext &context, const QString &ms
                      std::ostream& ofile,
                      std::ostream& oterminal)-> void
     {
-        // std::format when? :(
         ofile
             << timestamp << " "
             << label << ": "
@@ -72,7 +88,7 @@ void Output(QtMsgType type, const QMessageLogContext &context, const QString &ms
         logFn("debug", logFile, std::cerr);
         break;
     case QtInfoMsg:
-        logFn("debug", logFile, std::cerr);
+        logFn("info", logFile, std::cout);
         break;
     case QtWarningMsg:
         logFn("warning", logFile, std::cerr);
diff --git a/source/app/log.h b/source/app/log.h
index 3eb6b897..f67e83a4 100644
--- a/source/app/log.h
+++ b/source/app/log.h
@@ -21,6 +21,7 @@
 #include <QtGlobal>
 
 namespace Log {
+std::string logContents();
 void Output(QtMsgType type, const QMessageLogContext &context, const QString &msg);
 }
 #endif
diff --git a/source/build/main.cpp b/source/build/main.cpp
index 79e97768..83efa9f0 100644
--- a/source/build/main.cpp
+++ b/source/build/main.cpp
@@ -131,6 +131,8 @@ class Application : public QApplication
 
 int main(int argc, char *argv[])
 {
+    // This sets up our custom logging mechanism, that can print and
+    // save into a text file for future debugging
     qInstallMessageHandler(Log::Output);
 
     // Register handlers for unhandled exceptions and segmentation faults.
diff --git a/source/dialogs/infodialog.cpp b/source/dialogs/infodialog.cpp
index 9583932f..9e674ad4 100644
--- a/source/dialogs/infodialog.cpp
+++ b/source/dialogs/infodialog.cpp
@@ -19,6 +19,7 @@
 #include "ui_infodialog.h"
 
 #include <app/appinfo.h>
+#include <app/log.h>
 
 #include <QClipboard>
 
@@ -47,9 +48,17 @@ void InfoDialog::setInfo()
         QString(QObject::tr("You can grab development binaries here:\n"
                             "  https://github.com/powertab/powertabeditor/actions"));
 
-    const auto message = QString("%1\n\n%2").arg(
+    const auto contents = QString::fromStdString(Log::logContents());
+
+    const auto message = QString(
+        "%1\n\n"
+        "%2\n\n"
+        "===============================\n"
+        "Logs:\n%3"
+    ).arg(
         qname,
-        developmentBinaryLocation
+        developmentBinaryLocation,
+        contents
     );
 
     ui->appInfo->setText(message);