start with doc store

.gitignore

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+.vs/
+*.o
+*.swp
+~*
+*~
+.idea/
+cmake-build-debug/
+cmake-build-debugandtest/
+cmake-build-release/
+*.stackdump
+*.coredump
+compile_commands.json
+/build*
+/result*
+.clangd
+.cache
+
+.DS_Store
+.AppleDouble
+.LSOverride
+
+CMakeLists.txt.user*
+CMakeCache.txt
+
+*.tox
+imgui.ini

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.24 FATAL_ERROR)
+
+# cmake setup begin
+project(solanaceae_crdtnotes)
+
+if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+	set(SOLANACEAE_CRDTNOTES_STANDALONE ON)
+	# why the f do i need this >:(
+	set(NOT_SOLANACEAE_CRDTNOTES_STANDALONE OFF)
+else()
+	set(SOLANACEAE_CRDTNOTES_STANDALONE OFF)
+	set(NOT_SOLANACEAE_CRDTNOTES_STANDALONE ON)
+endif()
+message("II SOLANACEAE_CRDTNOTES_STANDALONE " ${SOLANACEAE_CRDTNOTES_STANDALONE})
+
+if (SOLANACEAE_CRDTNOTES_STANDALONE)
+	set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
+	# defaulting to debug mode, if not specified
+	if(NOT CMAKE_BUILD_TYPE)
+		set(CMAKE_BUILD_TYPE "Debug")
+	endif()
+
+	# setup my vim ycm :D
+	set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+	# more paths
+	set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib")
+	set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
+	set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
+endif()
+
+# external libs
+add_subdirectory(./external) # before increasing warn levels, sad :(
+
+if (SOLANACEAE_CRDTNOTES_STANDALONE)
+	set(CMAKE_CXX_EXTENSIONS OFF)
+
+	# bump up warning levels appropriately for clang, gcc & msvc
+	if (${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU" OR ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
+		add_compile_options(
+			-Wall -Wextra # Reasonable and standard
+			-Wpedantic # Warn if non-standard C++ is used
+			-Wunused # Warn on anything being unused
+			#-Wconversion # Warn on type conversions that may lose data
+			#-Wsign-conversion # Warn on sign conversions
+			-Wshadow # Warn if a variable declaration shadows one from a parent context
+		)
+
+		if (NOT WIN32)
+			#link_libraries(-fsanitize=address,undefined)
+			#link_libraries(-fsanitize=undefined)
+		endif()
+	elseif (${CMAKE_CXX_COMPILER_ID} STREQUAL "MSVC")
+		if (CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
+			string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
+		else()
+			set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")
+		endif()
+	endif()
+
+endif()
+
+# cmake setup end
+
+add_subdirectory(./src)
+

external/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.24 FATAL_ERROR)
+
+include(FetchContent)
+
+if (NOT TARGET crdt_version3)
+	FetchContent_Declare(crdt_version3
+		GIT_REPOSITORY https://github.com/Green-Sky/green_crdt.git
+		GIT_TAG master
+	)
+	FetchContent_MakeAvailable(crdt_version3)
+endif()
+

src/CMakeLists.txt

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+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

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+#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

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+#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);
+};
+