Added method to reverse order and statistic method.

src/discipline/Sport.cpp

@@ -1,10 +1,18 @@
 
 #include "Sport.h"
+
+// categories
 #include <set>
+
+// sorting and filtering
 #include <map>
 #include <algorithm>
 #include <regex>
 
+// float to string formatting
+#include <iostream>
+#include <iomanip>
+
 #include <QJsonObject>
 #include <QJsonArray>
 #include <QJsonValueRef>
@@ -164,7 +172,6 @@ QJsonArray Sport::getCompetitorsByCategory(QString category) {
  * @brief Sport::getCompetitorsWithMedal Filters all competitors, who have at least one medal. These objects are different from getCompetitorsByCategory !!!
  * @return All competitors, who won at least one medal. Structure of one competitor: {code, name, noc, medals{ME_GOLD, ME_SILVER, ME_BRONZE}}
  */
-
 QJsonArray Sport::getCompetitorsWithMedal() {
     map<QString, QJsonObject> competitors;
 
@@ -334,3 +341,83 @@ void Sport::sortCompetitors(QJsonArray &competitors, function<bool (const QJsonV
     sort_heap(competitors.begin(), competitors.end(), compare);
 }
 
+/**
+ * @brief Sport::reverseOrder Reverses the order of the competitors.
+ * @param competitors The competitors of one category.
+ */
+void Sport::reverseOrder(QJsonArray &competitors) {
+    int iterations = competitors.size() / 2; // automatically rounds down
+
+    for (int i = 0; i < iterations; i++) {
+        QJsonObject temp = competitors[i].toObject();
+        competitors[i] = competitors[competitors.size() - 1 - i].toObject();
+        competitors[competitors.size() - 1 - i] = temp;
+    }
+}
+
+/**
+ * @brief Sport::addRelativeToFirst Adds a relative value to the result of all competitors. Relative to the first competitor in the QJsonArray.
+ * Stores the statistic in obj->results->stat for each competitor.
+ * @param competitors The competitors of one category.
+ */
+void Sport::addRelativeToFirst(QJsonArray &competitors) {
+    if (competitors.isEmpty()) return;
+
+    QJsonObject reference = competitors[0].toObject();
+
+    // validate competitors
+    if (!reference.contains("results")) return;
+
+    QString refVal = reference["results"].toObject()["mark"].toString();
+
+    for (int i = 0; i < competitors.size(); i++) {
+        QJsonObject competitor = competitors[i].toObject();
+        QJsonObject results = competitor["results"].toObject();
+
+        if (results.contains("stat")) results.remove("stat");
+
+        // format relative float value to string with 2 digits after decimal point and sign
+        stringstream sstream;
+        sstream << fixed << setprecision(2) << calcRelativeStat(refVal, results["mark"].toString());
+        QString stat(sstream.str().c_str());
+        stat.append("%");
+        if (stat.at(0).isNumber()) stat = QString("+").append(stat);
+
+        results.insert("stat", stat);
+
+        competitor.remove("results");
+        competitor.insert("results", results);
+
+        competitors.replace(i, competitor);
+    }
+
+}
+
+/**
+ * @brief Sport::calcRelativeStat Calculates the relative deviation of val from ref in percent.
+ * @param ref The reference value.
+ * @param val The value to calculate the deviation from.
+ * @return The deviation from ref to val in percent.
+ */
+float Sport::calcRelativeStat(QString ref, QString val) {
+    // check if the value is not a time
+    if (!ref.contains(":") && !val.contains(":")) {
+        float fRef = ref.toFloat();
+
+        if (fRef == 0) return 0.0;
+        return ((val.toFloat() * 100)/ fRef) - 100;
+    }
+
+    regex r("\\d+");
+    smatch mref, mval;
+    string sref = ref.toUtf8().constData();
+    string sval = val.toUtf8().constData();
+
+    regex_search(sref, mref, r);
+    regex_search(sval, mval, r);
+
+    float timeRef = stof(mref.str(1)) * 60 * 100 + stof(mref.str(2)) * 100 + stof(mref.str(3));
+    float timeVal = stof(mval.str(1)) * 60 * 100 + stof(mval.str(2)) * 100 + stof(mval.str(3));
+
+    return ((timeVal * 100) / timeRef) - 100;
+}

src/discipline/Sport.h

@@ -33,6 +33,10 @@ public:
     void sortByName(QJsonArray &competitors);
     void sortByCountry(QJsonArray &competitors);
     void sortByResult(QJsonArray &competitors);
+    void reverseOrder(QJsonArray &competitors);
+
+    // statistic function(s)
+    void addRelativeToFirst(QJsonArray &competitors);
 
     void setDiscipline(QJsonObject discipline) {
         this->discipline = QJsonObject(discipline);
@@ -80,6 +84,8 @@ private:
     bool validateDiscipline();
     QJsonObject createCompetitorWithMedals(QJsonObject medalComp);
 
+    float calcRelativeStat(QString ref, QString val);
+
 };