start with doc store

src/CMakeLists.txt

@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.24 FATAL_ERROR)
+
+add_library(solanaceae_crdtnotes
+	./solanaceae/crdtnotes/crdtnotes.hpp
+	./solanaceae/crdtnotes/crdtnotes.cpp
+)
+target_include_directories(solanaceae_crdtnotes PUBLIC .)
+target_compile_features(solanaceae_crdtnotes PUBLIC cxx_std_17)
+target_link_libraries(solanaceae_crdtnotes PUBLIC
+	crdt_version3
+	#solanaceae_util
+)
+
+########################################
+

src/solanaceae/crdtnotes/crdtnotes.cpp

@@ -0,0 +1,39 @@
+#include "./crdtnotes.hpp"
+
+CRDTNotes::CRDTNotes(void) {
+}
+
+CRDTNotes::~CRDTNotes(void) {
+}
+
+std::vector<CRDTNotes::DocID> CRDTNotes::getDocList(void) {
+	std::vector<CRDTNotes::DocID> list;
+	for (const auto& [id, doc] : _docs) {
+		list.push_back(id);
+	}
+	return list;
+}
+
+const CRDTNotes::Doc* CRDTNotes::getDoc(const DocID& id) const {
+	auto res = _docs.find(id);
+	return res != _docs.cend() ? &(res->second) : nullptr;
+}
+
+CRDTNotes::Doc* CRDTNotes::getDoc(const DocID& id) {
+	auto res = _docs.find(id);
+	return res != _docs.cend() ? &(res->second) : nullptr;
+}
+
+CRDTNotes::Doc* CRDTNotes::addDoc(const CRDTAgent& self_agent, const DocID& id) {
+	if (_docs.count(id)) {
+		// error exists
+		// noop?
+		return nullptr;
+	}
+
+	// create and set local_actor
+	auto& doc = _docs[id];
+	doc.local_actor = self_agent;
+	return &doc;
+}
+

src/solanaceae/crdtnotes/crdtnotes.hpp

@@ -0,0 +1,50 @@
+#pragma once
+
+#include <green_crdt/v3/text_document.hpp>
+
+#include <array>
+#include <cstdint>
+#include <functional>
+#include <unordered_map>
+
+using ID32 = std::array<uint8_t, 32>;
+
+template<>
+struct std::hash<ID32> {
+	std::size_t operator()(ID32 const& s) const noexcept {
+		static_assert(sizeof(size_t) == 8);
+		// TODO: maybe shuffle the indices a bit
+		return
+			(static_cast<size_t>(s[0]) << 8*0) |
+			(static_cast<size_t>(s[1]) << 8*1) |
+			(static_cast<size_t>(s[2]) << 8*2) |
+			(static_cast<size_t>(s[3]) << 8*3) |
+			(static_cast<size_t>(s[4]) << 8*4) |
+			(static_cast<size_t>(s[5]) << 8*5) |
+			(static_cast<size_t>(s[6]) << 8*6) |
+			(static_cast<size_t>(s[7]) << 8*7)
+		;
+	}
+};
+
+class CRDTNotes {
+	using CRDTAgent = ID32;
+	using DocID = ID32;
+	using Doc = GreenCRDT::V3::TextDocument<CRDTAgent>;
+
+	// TODO: add metadata to docs
+	std::unordered_map<DocID, Doc> _docs;
+
+	public:
+		// config?
+		CRDTNotes(void);
+		~CRDTNotes(void);
+
+		std::vector<DocID> getDocList(void);
+
+		const Doc* getDoc(const DocID& id) const;
+		Doc* getDoc(const DocID& id);
+
+		Doc* addDoc(const CRDTAgent& self_agent, const DocID& doc);
+};
+