feat(database,windows): add support for Realtime Database to windows

.github/workflows/windows.yaml

@@ -56,7 +56,7 @@ jobs:
       - name: "Build Windows (Release)"
         run: cd tests && flutter build windows --release
       - name: Start Firebase Emulator and run tests
-        run: cd ./.github/workflows/scripts && firebase emulators:exec --project flutterfire-e2e-tests "cd ../../../tests && flutter test .\integration_test\e2e_test.dart -d windows"
+        run: cd ./.github/workflows/scripts && firebase emulators:exec --project flutterfire-e2e-tests "cd ../../../tests && flutter test .\integration_test\e2e_test.dart -d windows --verbose"
 
 # We cannot run the tests but we can still try to build the app because of https://github.com/flutter/flutter/issues/79213
   windows-firestore:

packages/firebase_core/firebase_core/windows/CMakeLists.txt

@@ -122,7 +122,7 @@ add_subdirectory(${FIREBASE_CPP_SDK_DIR} bin/ EXCLUDE_FROM_ALL)
 target_include_directories(${PLUGIN_NAME} INTERFACE
   "${FIREBASE_CPP_SDK_DIR}/include")
 
-set(FIREBASE_RELEASE_PATH_LIBS firebase_app firebase_auth firebase_remote_config firebase_storage firebase_firestore)
+set(FIREBASE_RELEASE_PATH_LIBS firebase_app firebase_auth firebase_remote_config firebase_storage firebase_firestore firebase_database)
 foreach(firebase_lib IN ITEMS ${FIREBASE_RELEASE_PATH_LIBS})
     get_target_property(firebase_lib_path ${firebase_lib} IMPORTED_LOCATION)
     string(REPLACE "Debug" "Release" firebase_lib_release_path ${firebase_lib_path})

packages/firebase_database/firebase_database/pubspec.yaml

@@ -39,5 +39,7 @@ flutter:
         pluginClass: FLTFirebaseDatabasePlugin
       macos:
         pluginClass: FLTFirebaseDatabasePlugin
+      windows:
+        pluginClass: FirebaseDatabasePluginCApi
       web:
         default_package: firebase_database_web

packages/firebase_database/firebase_database/windows/CMakeLists.txt

@@ -0,0 +1,60 @@
+cmake_minimum_required(VERSION 3.14)
+
+set(PROJECT_NAME "flutterfire_database")
+project(${PROJECT_NAME} LANGUAGES CXX)
+
+set(PLUGIN_NAME "firebase_database_plugin")
+
+list(APPEND PLUGIN_SOURCES
+  "firebase_database_plugin.cpp"
+  "firebase_database_plugin.h"
+  "messages.g.cpp"
+  "messages.g.h"
+)
+
+# Read version from pubspec.yaml
+file(STRINGS "../pubspec.yaml" pubspec_content)
+foreach(line ${pubspec_content})
+  string(FIND ${line} "version: " has_version)
+
+  if("${has_version}" STREQUAL "0")
+    string(FIND ${line} ": " version_start_pos)
+    math(EXPR version_start_pos "${version_start_pos} + 2")
+    string(LENGTH ${line} version_end_pos)
+    math(EXPR len "${version_end_pos} - ${version_start_pos}")
+    string(SUBSTRING ${line} ${version_start_pos} ${len} PLUGIN_VERSION)
+    break()
+  endif()
+endforeach(line)
+
+configure_file(plugin_version.h.in ${CMAKE_BINARY_DIR}/generated/firebase_database/plugin_version.h)
+include_directories(${CMAKE_BINARY_DIR}/generated/)
+
+add_library(${PLUGIN_NAME} STATIC
+  "include/firebase_database/firebase_database_plugin_c_api.h"
+  "firebase_database_plugin_c_api.cpp"
+  ${PLUGIN_SOURCES}
+  ${CMAKE_BINARY_DIR}/generated/firebase_database/plugin_version.h
+)
+
+apply_standard_settings(${PLUGIN_NAME})
+
+set_target_properties(${PLUGIN_NAME} PROPERTIES
+  CXX_VISIBILITY_PRESET hidden)
+target_compile_definitions(${PLUGIN_NAME} PUBLIC FLUTTER_PLUGIN_IMPL)
+target_compile_definitions(${PLUGIN_NAME} PRIVATE -DINTERNAL_EXPERIMENTAL=1)
+
+set(MSVC_RUNTIME_MODE MD)
+set(firebase_libs firebase_core_plugin firebase_database)
+set(ADDITIONAL_LIBS advapi32 ws2_32 crypt32 rpcrt4 ole32 shell32 Bcrypt.lib DbgHelp.lib)
+set(RTDB_ADDITIONAL_LIBS iphlpapi psapi userenv)
+target_link_libraries(${PLUGIN_NAME} PRIVATE "${firebase_libs}" "${ADDITIONAL_LIBS}" "${RTDB_ADDITIONAL_LIBS}")
+
+target_include_directories(${PLUGIN_NAME} INTERFACE
+  "${CMAKE_CURRENT_SOURCE_DIR}/include")
+target_link_libraries(${PLUGIN_NAME} PRIVATE flutter flutter_wrapper_plugin)
+
+set(firebase_database_bundled_libraries
+  ""
+  PARENT_SCOPE
+)