From 1620b73d018bc7c0c1afb3fac0a51ab9fe592f5b Mon Sep 17 00:00:00 2001
From: Gerhard Hoffmann <g.hoffmann@atb-online.eu>
Date: Tue, 22 Aug 2023 12:29:52 +0200
Subject: [PATCH] Added sameFilesInDirs(): check for two different directories
 if the contain the same files (comparison by name and by git-blob).

---
 utils.cpp | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 utils.h   |  3 ++
 2 files changed, 86 insertions(+)

diff --git a/utils.cpp b/utils.cpp
index 92bf620..1d3c7de 100644
--- a/utils.cpp
+++ b/utils.cpp
@@ -1,5 +1,6 @@
 #include "utils.h"
 #include "message_handler.h"
+#include "git/git_client.h"
 
 #include <QFile>
 #include <QTextStream>
@@ -86,3 +87,85 @@ QString Utils::rstrip(QString const &str) {
     }
     return "";
 }
+
+bool Utils::sameFilesInDirs(QDir const &dir1, QDir const &dir2,
+                            QStringList const &nameFilters) {
+    if (!dir1.exists()) {
+        printCriticalErrorMsg(dir1.dirName() + " DOES NOT EXIST");
+        return false;
+    }
+    if (!dir2.exists()) {
+        printCriticalErrorMsg(dir2.dirName() + " DOES NOT EXIST");
+        return false;
+    }
+    if (dir1.absolutePath() == dir2.absolutePath()) {
+        printCriticalErrorMsg(dir1.dirName() + " AND "+ dir2.dirName() + " HAVE SAME PATH");
+        return false;
+    }
+
+    // files, sorted by name
+    QFileInfoList const &lst1 = dir1.entryInfoList(nameFilters, QDir::Files, QDir::Name);
+    QFileInfoList const &lst2 = dir2.entryInfoList(nameFilters, QDir::Files, QDir::Name);
+
+    QStringList fileNameLst1{};
+    QStringList fileNameLst2{};
+    QListIterator<QFileInfo> i1(lst1);
+    while (i1.hasNext()) {
+        fileNameLst1 << i1.next().fileName();
+    }
+    QListIterator<QFileInfo> i2(lst2);
+    while (i2.hasNext()) {
+        fileNameLst2 << i2.next().fileName();
+    }
+
+    if (fileNameLst1.isEmpty()) {
+        qCritical() << "DIR1" << dir1.dirName() << " DOES NOT CONTAIN EXPECTED FILES";
+        return false;
+    }
+    if (fileNameLst2.isEmpty())  {
+        qCritical() << "DIR1" << dir2.dirName() << " DOES NOT CONTAIN EXPECTED FILES";
+        return false;
+    }
+    if (fileNameLst1 != fileNameLst2) {
+        printCriticalErrorMsg(dir1.dirName() + " AND " + dir2.dirName()
+                            + " DIFFER: [" + fileNameLst1.join(',') + "],["
+                            + fileNameLst2.join(',') + "]");
+        return false;
+    } else {
+        printInfoMsg(dir1.dirName() + " AND " + dir2.dirName()
+                    + " ARE EQUAL: [" + fileNameLst1.join(',') + "]");
+    }
+
+    QStringList gitBlobLst1{};
+    QStringList gitBlobLst2{};
+    QListIterator<QFileInfo> i3(lst1);
+    while (i3.hasNext()) {
+        gitBlobLst1 << GitClient::gitBlob(i3.next().fileName());
+    }
+    QListIterator<QFileInfo> i4(lst2);
+    while (i4.hasNext()) {
+        gitBlobLst2 << GitClient::gitBlob(i4.next().fileName());
+    }
+
+    if (gitBlobLst1.isEmpty()) {
+        qCritical() << "DIR1" << dir1.dirName() << " DOES NOT CONTAIN EXPECTED FILES";
+        return false;
+    }
+    if (gitBlobLst2.isEmpty())  {
+        qCritical() << "DIR1" << dir2.dirName() << " DOES NOT CONTAIN EXPECTED FILES";
+        return false;
+    }
+
+    if (gitBlobLst1 != gitBlobLst2) {
+        printCriticalErrorMsg(dir1.dirName() + " AND " + dir2.dirName()
+                            + " DIFFER: [" + gitBlobLst1.join(',') + "],["
+                            + gitBlobLst2.join(',') + "]");
+        return false;
+    } else {
+        printInfoMsg(dir1.dirName() + " AND " + dir2.dirName()
+                    + " CONTAIN SAME GIT-BLOBS FOR FILES: [" + fileNameLst1.join(',') + "]");
+
+    }
+
+    return true;
+}
diff --git a/utils.h b/utils.h
index 79f838b..7f16616 100644
--- a/utils.h
+++ b/utils.h
@@ -7,6 +7,7 @@
 #include <QFile>
 #include <QFileInfo>
 #include <QDateTime>
+#include <QDir>
 
 namespace Utils {
     int read1stLineOfFile(QString fileName);
@@ -16,6 +17,8 @@ namespace Utils {
     void printLineEditInfo(QStringList const &lines);
     QString getTariffLoadTime(QString fileName);
     QString rstrip(QString const &str);
+    bool sameFilesInDirs(QDir const &dir1, QDir const &dir2,
+                         QStringList const &nameFilters = {"*.json"});
 }
 
 #endif // UTILS_H_INCLUDED