1 files changed, 85 insertions, 0 deletions

diff --git a/src/config.cpp b/src/config.cpp
new file mode 100644
index 0000000..aec29a4
--- /dev/null
+++ b/src/config.cpp
@@ -0,0 +1,85 @@
+#include <filesystem>
+#include <vector>
+#include <fstream>
+#include <format>
+#include <utility>
+
+#include <ryml.hpp>
+#include <ryml_std.hpp>
+#include <mw/error.hpp>
+
+#include "config.hpp"
+
+namespace {
+
+mw::E<std::vector<char>> readFile(const std::filesystem::path& path)
+{
+    std::ifstream f(path, std::ios::binary);
+    std::vector<char> content;
+    content.reserve(102400);
+    content.assign(std::istreambuf_iterator<char>(f),
+                   std::istreambuf_iterator<char>());
+    if(f.bad() || f.fail())
+    {
+        return std::unexpected(mw::runtimeError(
+            std::format("Failed to read file {}", path.string())));
+    }
+
+    return content;
+}
+
+} // namespace
+
+mw::E<Configuration> Configuration::fromYaml(const std::filesystem::path& path)
+{
+    auto buffer = readFile(path);
+    if(!buffer.has_value())
+    {
+        return std::unexpected(buffer.error());
+    }
+
+    ryml::Tree tree = ryml::parse_in_place(ryml::to_substr(*buffer));
+    Configuration config;
+    if(tree["listen-address"].readable())
+    {
+        tree["listen-address"] >> config.listen_address;
+    }
+    if(tree["listen-port"].readable())
+    {
+        tree["listen-port"] >> config.listen_port;
+    }
+    if(tree["socket-user"].readable())
+    {
+        tree["socket-user"] >> config.socket_user;
+    }
+    if(tree["socket-group"].readable())
+    {
+        tree["socket-group"] >> config.socket_group;
+    }
+    if(tree["socket-permission"].readable())
+    {
+        tree["socket-permission"] >> config.socket_permission;
+    }
+    if(tree["base-url"].readable())
+    {
+        tree["base-url"] >> config.base_url;
+    }
+    if(tree["data-dir"].readable())
+    {
+        tree["data-dir"] >> config.data_dir;
+    }
+    if(tree["openid-url-prefix"].readable())
+    {
+        tree["openid-url-prefix"] >> config.openid_url_prefix;
+    }
+    if(tree["client-id"].readable())
+    {
+        tree["client-id"] >> config.client_id;
+    }
+    if(tree["client-secret"].readable())
+    {
+        tree["client-secret"] >> config.client_secret;
+    }
+
+    return mw::E<Configuration>{std::in_place, std::move(config)};
+}