implement issue ID prefix algorithm

tests now require the actual abbreviated first words in the issue ID

Author: arnemertz

src/domain/CMakeLists.txt

@@ -7,5 +7,6 @@ target_link_libraries(domain
     PRIVATE
     project_warnings
     project_options
+    CONAN_PKG::range-v3
     )
 target_include_directories(domain PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>)

src/domain/application_service.cpp

@@ -1,9 +1,26 @@
 #include "application_service.hpp"
 
+#include <range/v3/view.hpp>
+#include <range/v3/range/conversion.hpp>
+#include <string>
+
 using namespace fix::domain;
+using namespace std::literals;
+namespace rv = ranges::views;
 
 std::string application_service::create(std::string_view title, std::string_view description) { // NOLINT
-  (void) title;
   (void) description;
-  return "thi-is-a-new-0000000";
+
+  // clang-format off
+  const auto id_prefix = title
+      | rv::split(' ')
+      | rv::take(4)
+      | rv::transform([](auto&& word) {
+        return word | rv::take(3) | rv::transform([](char c){ return std::tolower(c); });
+      })
+      | rv::join('-')
+      | ranges::to<std::string>;
+  // clang-format on
+
+  return id_prefix + "-0000000"s;
 }

src/fix_cli/app.cpp

@@ -51,7 +51,7 @@ int app::run_command(std::string const& command) {
 
   if (command == "create"sv) {
     domain::application_service application_service;
-    const auto issue_id = application_service.create("", "");
+    const auto issue_id = application_service.create("this is a new issue", "");
     out << fmt::format("Issue created: {}\n", issue_id);
     return EXIT_SUCCESS;
   }

test/domain/application_service_test.cpp

@@ -2,9 +2,17 @@
 
 #include "application_service.hpp"
 
+#include <string>
+#include <tuple>
+using namespace std::literals;
+
 using fix::domain::application_service;
 
 TEST_CASE("Create issue returns issue ID") {
   application_service application_service;
-  CHECK_THAT(application_service.create("this is a new issue", "some text"), Catch::Matches("thi-is-a-new-[0-9a-f]{7}"));
+  auto const& [title, description, id_prefix]
+      = GENERATE(std::tuple("this is a new issue", "some text", "thi-is-a-new"),
+                 std::tuple("My first issue in Fix", "Dorem Fixum dolor sit amet", "my-fir-iss-in"));
+  auto const id_pattern = id_prefix + "-[0-9a-f]{7}"s;
+  CHECK_THAT(application_service.create(title, description), Catch::Matches(id_pattern));
 }