From d592ee191e8aedc84c670e6d818fcf97c0bd7a92 Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Wed, 17 Jan 2018 13:32:13 +0100
Subject: Configuration creates missing items based on defaults

---
 lib/settings/configuration.h | 50 +++++++++++++++++++-------------------------
 1 file changed, 22 insertions(+), 28 deletions(-)

(limited to 'lib/settings/configuration.h')

diff --git a/lib/settings/configuration.h b/lib/settings/configuration.h
index 4fc614e..67ba7b1 100644
--- a/lib/settings/configuration.h
+++ b/lib/settings/configuration.h
@@ -9,26 +9,20 @@
 #ifndef CONFIGURATION_H
 #define CONFIGURATION_H
 
+#include <libconfig.h++>
 #include <optional>
 #include <string>
 #include <vector>
 
-namespace libconfig
-{
-class Config;
-class Setting;
-}
-
 class Configuration
 {
 public:
-    Configuration();
+    explicit Configuration(const std::string &path, const std::string &home);
     ~Configuration();
 
-    bool readUserConfiguration(const std::string &path);
+    bool read();
     bool parse(const std::string &contents);
-    bool writeUserConfiguration(const std::string &path);
-    bool writeIfNeeded();
+    bool writeIfNeeded(const std::string &path = std::string());
 
     bool parseDefaultConfiguration(const std::string &contents);
 
@@ -38,39 +32,39 @@ public:
     void resetValue(const char *path);
 
     template <typename T>
-    std::optional<T> value(const char *path) const;
+    std::optional<T> value(const char *path) const
+    {
+        // if setting doesn't exist, give back a nullopt
+        if(!m_userCfg->exists(path)) {
+            const_cast<Configuration *>(this)->resetValue(path);
+            return value<T>(path);
+        }
+
+        const libconfig::Setting &v = m_userCfg->lookup(path);
+        if constexpr(std::is_same_v<T, std::string>)
+            return std::optional<std::string>(castToString(v));
+        else
+            return std::optional<T>(static_cast<T>(v));
+    }
 
     template <typename T>
     bool setValue(std::string path, const T &val);
 
 private:
+    std::string castToString(const libconfig::Setting &v) const;
+
     bool changed = false;
+    std::string m_homePath;
     std::string m_userCfgPath;
     libconfig::Config *m_userCfg, *m_defaultCfg;
 };
 
 // replace ~ with home
-std::string &patchHome(std::string &path, const std::string &home);
+std::string patchHome(const std::string &path, const std::string &home);
 
 // instantiate functions
 // this needs to be done because the implementation is in the cpp file
 
-// Settings::value<>
-extern template std::optional<int> Configuration::value<int>(const char *path) const;
-extern template std::optional<unsigned int> Configuration::value<unsigned int>(const char *path) const;
-extern template std::optional<long> Configuration::value<long>(const char *path) const;
-extern template std::optional<unsigned long> Configuration::value<unsigned long>(const char *path) const;
-
-extern template std::optional<long long> Configuration::value<long long>(const char *path) const;
-extern template std::optional<unsigned long long> Configuration::value<unsigned long long>(const char *path) const;
-
-extern template std::optional<float> Configuration::value<float>(const char *path) const;
-extern template std::optional<double> Configuration::value<double>(const char *path) const;
-
-extern template std::optional<bool> Configuration::value<bool>(const char *path) const;
-
-extern template std::optional<std::string> Configuration::value<std::string>(const char *path) const;
-
 // Settings::setValue<>
 extern template bool Configuration::setValue<int>(std::string path, const int &val);
 extern template bool Configuration::setValue<unsigned int>(std::string path, const unsigned int &val);
-- 
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