fix + random doc id

src/solanaceae/crdtnotes/crdtnotes.cpp

@@ -1,6 +1,8 @@
 #include "./crdtnotes.hpp"
 
 CRDTNotes::CRDTNotes(void) {
+	_rng.seed(std::random_device{}());
+	_rng.discard(707);
 }
 
 CRDTNotes::~CRDTNotes(void) {
@@ -37,3 +39,13 @@ CRDTNotes::Doc* CRDTNotes::addDoc(const CRDTAgent& self_agent, const DocID& id)
 	return &doc;
 }
 
+CRDTNotes::Doc* CRDTNotes::addDoc(const CRDTAgent& self_agent) {
+	DocID new_id;
+	for (auto& it : new_id) {
+		// TODO: this discards alot
+		it = static_cast<uint8_t>(_rng());
+	}
+
+	return addDoc(self_agent, new_id);
+}
+

src/solanaceae/crdtnotes/crdtnotes.hpp

@@ -6,6 +6,7 @@
 #include <cstdint>
 #include <functional>
 #include <unordered_map>
+#include <random>
 
 using ID32 = std::array<uint8_t, 32>;
 
@@ -36,6 +37,7 @@ class CRDTNotes {
 	private:
 		// TODO: add metadata to docs
 		std::unordered_map<DocID, Doc> _docs;
+		std::default_random_engine _rng;
 
 	public:
 
@@ -49,5 +51,8 @@ class CRDTNotes {
 		Doc* getDoc(const DocID& id);
 
 		Doc* addDoc(const CRDTAgent& self_agent, const DocID& doc);
+
+		// new doc with random id
+		Doc* addDoc(const CRDTAgent& self_agent);
 };
 

src/solanaceae/crdtnotes_imgui/crdtnotes_imgui.cpp

@@ -39,7 +39,7 @@ namespace detail {
 	std::string to_hex(const Container& data) {
 		std::string res;
 		for (const uint8_t it : data) {
-			res += nib_to_hex(it << 4);
+			res += nib_to_hex(it >> 4);
 			res += nib_to_hex(it & 0x0f);
 		}
 		return res;
@@ -74,9 +74,7 @@ float CRDTNotesImGui::render(void) {
 
 						_notes.addDoc(
 							// tox id (id from self)
-							self_agent_id,
-							// random 32bytes?
-							{}
+							self_agent_id
 						);
 
 						// and open the doc