Move JSON helpers to lib

lib/utils/json-helpers.cpp

@@ -0,0 +1,60 @@
+#include "json-helpers.hpp"
+
+#include <nlohmann/json.hpp>
+#include <QJsonDocument>
+
+namespace advss {
+
+QString FormatJsonString(std::string s)
+{
+	return FormatJsonString(QString::fromStdString(s));
+}
+
+QString FormatJsonString(QString json)
+{
+	QJsonDocument doc = QJsonDocument::fromJson(json.toUtf8());
+	if (doc.isNull()) {
+		return "";
+	}
+	return QString::fromUtf8(doc.toJson(QJsonDocument::Indented));
+}
+
+bool MatchJson(const std::string &json1, const std::string &json2,
+	       const RegexConfig &regex)
+{
+	auto j1 = FormatJsonString(json1).toStdString();
+	auto j2 = FormatJsonString(json2).toStdString();
+
+	if (j1.empty()) {
+		j1 = json1;
+	}
+	if (j2.empty()) {
+		j2 = json2;
+	}
+
+	if (regex.Enabled()) {
+		return regex.Matches(j1, j2);
+	}
+	return j1 == j2;
+}
+
+std::optional<std::string> GetJsonField(const std::string &jsonStr,
+					const std::string &fieldToExtract)
+{
+	try {
+		nlohmann::json json = nlohmann::json::parse(jsonStr);
+		auto it = json.find(fieldToExtract);
+		if (it == json.end()) {
+			return {};
+		}
+		if (it->is_string()) {
+			return it->get<std::string>();
+		}
+		return it->dump();
+	} catch (const nlohmann::json::exception &) {
+		return {};
+	}
+	return {};
+}
+
+} // namespace advss