Moved TRMNL stuff to its own file

TRMNL.cpp

@@ -0,0 +1,232 @@
+#include "TRMNL.h"
+
+using std::list;
+using std::map;
+using std::optional;
+using std::string;
+
+using nlohmann::json;
+
+TRMNL::TRMNL(const string& id,
+	const string& api_key,
+	const string& friendly_id,
+	int refresh_rate)
+: m_id(id),
+m_api_key(api_key),
+m_friendly_id(friendly_id),
+m_refresh_rate(refresh_rate),
+m_update_handler()
+{}
+
+const string& TRMNL::id() const
+{
+	return m_id;
+}
+
+const string& TRMNL::api_key() const
+{
+	return m_api_key;
+}
+
+const string& TRMNL::friendly_id() const
+{
+	return m_friendly_id;
+}
+
+int TRMNL::refresh_rate() const
+{
+	return m_refresh_rate;
+}
+
+void TRMNL::id(const std::string& id)
+{
+	m_id = id;
+	if (m_update_handler)
+	{
+		m_update_handler(*this);
+	}
+}
+
+void TRMNL::api_key(const std::string& api_key)
+{
+	m_api_key = api_key;
+	if (m_update_handler)
+	{
+		m_update_handler(*this);
+	}
+}
+
+void TRMNL::friendly_id(const std::string& friendly_id)
+{
+	m_friendly_id = friendly_id;
+	if (m_update_handler)
+	{
+		m_update_handler(*this);
+	}
+}
+
+void TRMNL::refresh_rate(int refresh_rate)
+{
+	m_refresh_rate = refresh_rate;
+	if (m_update_handler)
+	{
+		m_update_handler(*this);
+	}
+}
+
+void TRMNL::set_update_handler(std::function<void (const TRMNL& trmnl)> handler)
+{
+	m_update_handler = handler;
+}
+
+string TRMNL::friendly_from_id(string id)
+{
+	size_t pos = id.find(':');
+	while (pos != string::npos)
+	{
+		id.erase(pos, 1);
+		pos = id.find(':');
+	}
+
+	if (id.size() <= 6)
+	{
+		return id;
+	}
+	else
+	{
+		return id.substr(id.size() - 6);
+	}
+}
+
+void to_json(json& j, const TRMNL& trmnl)
+{
+	j = json{
+		{"ID", trmnl.m_id},
+		{"api_key", trmnl.m_api_key},
+		{"friendly_id", trmnl.m_friendly_id},
+		{"refresh_rate", trmnl.m_refresh_rate},
+	};
+}
+
+void from_json(const json& j, TRMNL& trmnl)
+{
+	bool updated = false;
+	try
+	{
+		j.at("ID").get_to(trmnl.m_id);
+		updated = true;
+	}
+	catch (const std::exception& e)
+	{}
+
+	try
+	{
+		j.at("api_key").get_to(trmnl.m_api_key);
+		updated = true;
+	}
+	catch (const std::exception& e)
+	{}
+
+	try
+	{
+		j.at("friendly_id").get_to(trmnl.m_friendly_id);
+		updated = true;
+	}
+	catch (const std::exception& e)
+	{}
+
+	try
+	{
+		j.at("refresh_rate").get_to(trmnl.m_refresh_rate);
+		updated = true;
+	}
+	catch (const std::exception& e)
+	{}
+
+	if (updated && trmnl.m_update_handler)
+	{
+		trmnl.m_update_handler(trmnl);
+	}
+}
+
+void TRMNLContainer::TRMNL_update_handler(const TRMNL& trmnl)
+{
+	auto it = m_by_id.find(trmnl.m_id);
+	if (it == m_by_id.end())
+	{
+		return;
+	}
+
+	// An update is needed only if friendly ID changes
+	if (0 == m_by_friendly.count(trmnl.m_friendly_id))
+	{
+		m_by_friendly[trmnl.m_friendly_id] = it->second;
+	}
+}
+
+void TRMNLContainer::add_device(TRMNL trmnl)
+{
+	if (trmnl.m_id.empty())
+	{
+		return;
+	}
+
+	trmnl.set_update_handler([this](const TRMNL& trmnl){ TRMNL_update_handler(trmnl); });
+	auto it = m_devices.insert(m_devices.end(), trmnl);
+
+	m_by_id[trmnl.m_id] = it;
+
+	if (!trmnl.m_friendly_id.empty())
+	{
+		m_by_friendly[trmnl.m_friendly_id] = it;
+	}
+}
+
+TRMNL* TRMNLContainer::get_device_by_id(const string& id)
+{
+	TRMNL* result = nullptr;
+
+	if (0 != m_by_id.count(id))
+	{
+		result = &(*m_by_id[id]);
+	}
+
+	return result;
+}
+
+TRMNL* TRMNLContainer::get_device_by_friendly(const string& friendly)
+{
+	TRMNL* result = nullptr;
+
+	if (0 != m_by_friendly.count(friendly))
+	{
+		result = &(*m_by_friendly[friendly]);
+	}
+
+	return result;
+}
+
+void TRMNLContainer::clear()
+{
+	m_by_friendly.clear();
+	m_by_id.clear();
+	m_devices.clear();
+}
+
+void to_json(json& j, const TRMNLContainer& cont)
+{
+	j = cont.m_devices;
+}
+
+void from_json(const json& j, TRMNLContainer& cont)
+{
+	if (!j.is_array())
+	{
+		return;
+	}
+
+	for (int i = 0; i < j.size(); ++i)
+	{
+		cont.add_device(j[i]);
+	}
+}