I hyper-focued on refactoring again

- I put a cool-sounding "we are number one" remix on repeat and straight
  up grinded the entire repository to a better state until 03:09 AM. I
  guess I have something wrong in my brain that makes me do this shit

1 files changed, 550 insertions, 0 deletions

diff --git a/game/client/gui/play_menu.cc b/game/client/gui/play_menu.cc
new file mode 100644
index 0000000..922dd4e
--- /dev/null
+++ b/game/client/gui/play_menu.cc
@@ -0,0 +1,550 @@
+#include "client/pch.hh"
+
+#include "client/gui/play_menu.hh"
+
+#include "core/config/boolean.hh"
+#include "core/io/config_map.hh"
+#include "core/math/constexpr.hh"
+#include "core/utils/string.hh"
+
+#include "shared/protocol.hh"
+
+#include "client/gui/bother.hh"
+#include "client/gui/gui_screen.hh"
+#include "client/gui/language.hh"
+#include "client/io/glfw.hh"
+
+#include "client/game.hh"
+#include "client/globals.hh"
+#include "client/session.hh"
+
+constexpr static ImGuiWindowFlags WINDOW_FLAGS = ImGuiWindowFlags_NoBackground | ImGuiWindowFlags_NoDecoration;
+constexpr static const char* DEFAULT_SERVER_NAME = "Voxelius Server";
+constexpr static const char* SERVERS_TXT = "servers.txt";
+constexpr static const char* WARNING_TOAST = "[!]";
+
+constexpr static std::size_t MAX_SERVER_ITEM_NAME = 24;
+
+enum class item_status : unsigned int {
+    UNKNOWN = 0x0000U,
+    PINGING = 0x0001U,
+    REACHED = 0x0002U,
+    FAILURE = 0x0003U,
+};
+
+struct ServerStatusItem final {
+    std::string name;
+    std::string password;
+    std::string hostname;
+    std::uint16_t port;
+
+    // Things pulled from bother events
+    std::uint32_t protocol_version;
+    std::uint16_t num_players;
+    std::uint16_t max_players;
+    std::string motd;
+
+    // Unique identifier that monotonically
+    // grows with each new server added and
+    // doesn't reset with each server removed
+    unsigned int identity;
+
+    item_status status;
+};
+
+static std::string str_tab_servers;
+
+static std::string str_join;
+static std::string str_connect;
+static std::string str_add;
+static std::string str_edit;
+static std::string str_remove;
+static std::string str_refresh;
+
+static std::string str_status_init;
+static std::string str_status_ping;
+static std::string str_status_fail;
+
+static std::string str_outdated_client;
+static std::string str_outdated_server;
+
+static std::string input_itemname;
+static std::string input_hostname;
+static std::string input_password;
+
+static unsigned int next_identity;
+static std::deque<ServerStatusItem*> servers_deque;
+static ServerStatusItem* selected_server;
+static bool editing_server;
+static bool adding_server;
+static bool needs_focus;
+
+static void parse_hostname(ServerStatusItem* item, const std::string& hostname)
+{
+    auto parts = utils::split(hostname, ":");
+
+    if(!parts[0].empty()) {
+        item->hostname = parts[0];
+    } else {
+        item->hostname = std::string("localhost");
+    }
+
+    if(parts.size() >= 2) {
+        item->port = math::clamp<std::uint16_t>(strtoul(parts[1].c_str(), nullptr, 10), 1024, UINT16_MAX);
+    } else {
+        item->port = protocol::PORT;
+    }
+}
+
+static void add_new_server(void)
+{
+    auto item = new ServerStatusItem();
+    item->port = protocol::PORT;
+    item->protocol_version = protocol::VERSION;
+    item->max_players = UINT16_MAX;
+    item->num_players = UINT16_MAX;
+    item->identity = next_identity;
+    item->status = item_status::UNKNOWN;
+
+    next_identity += 1U;
+
+    input_itemname = DEFAULT_SERVER_NAME;
+    input_hostname = std::string();
+    input_password = std::string();
+
+    servers_deque.push_back(item);
+    selected_server = item;
+    editing_server = true;
+    adding_server = true;
+    needs_focus = true;
+}
+
+static void edit_selected_server(void)
+{
+    input_itemname = selected_server->name;
+
+    if(selected_server->port != protocol::PORT) {
+        input_hostname = std::format("{}:{}", selected_server->hostname, selected_server->port);
+    } else {
+        input_hostname = selected_server->hostname;
+    }
+
+    input_password = selected_server->password;
+
+    editing_server = true;
+    needs_focus = true;
+}
+
+static void remove_selected_server(void)
+{
+    gui::bother::cancel(selected_server->identity);
+
+    for(auto it = servers_deque.cbegin(); it != servers_deque.cend(); ++it) {
+        if(selected_server == (*it)) {
+            delete selected_server;
+            selected_server = nullptr;
+            servers_deque.erase(it);
+            return;
+        }
+    }
+}
+
+static void join_selected_server(void)
+{
+    if(!session::peer) {
+        session::connect(selected_server->hostname.c_str(), selected_server->port, selected_server->password.c_str());
+    }
+}
+
+static void on_glfw_key(const io::GlfwKeyEvent& event)
+{
+    if((event.key == GLFW_KEY_ESCAPE) && (event.action == GLFW_PRESS)) {
+        if(globals::gui_screen == GUI_PLAY_MENU) {
+            if(editing_server) {
+                if(adding_server) {
+                    remove_selected_server();
+                } else {
+                    input_itemname.clear();
+                    input_hostname.clear();
+                    input_password.clear();
+                    editing_server = false;
+                    adding_server = false;
+                    return;
+                }
+            }
+
+            globals::gui_screen = GUI_MAIN_MENU;
+            selected_server = nullptr;
+            return;
+        }
+    }
+}
+
+static void on_language_set(const gui::LanguageSetEvent& event)
+{
+    str_tab_servers = gui::language::resolve_gui("play_menu.tab.servers");
+
+    str_join = gui::language::resolve_gui("play_menu.join");
+    str_connect = gui::language::resolve_gui("play_menu.connect");
+    str_add = gui::language::resolve_gui("play_menu.add");
+    str_edit = gui::language::resolve_gui("play_menu.edit");
+    str_remove = gui::language::resolve_gui("play_menu.remove");
+    str_refresh = gui::language::resolve_gui("play_menu.refresh");
+
+    str_status_init = gui::language::resolve("play_menu.status.init");
+    str_status_ping = gui::language::resolve("play_menu.status.ping");
+    str_status_fail = gui::language::resolve("play_menu.status.fail");
+
+    str_outdated_client = gui::language::resolve("play_menu.outdated_client");
+    str_outdated_server = gui::language::resolve("play_menu.outdated_server");
+}
+
+static void on_bother_response(const gui::BotherResponseEvent& event)
+{
+    for(auto item : servers_deque) {
+        if(item->identity == event.identity) {
+            if(event.is_server_unreachable) {
+                item->protocol_version = 0U;
+                item->num_players = UINT16_MAX;
+                item->max_players = UINT16_MAX;
+                item->motd = str_status_fail;
+                item->status = item_status::FAILURE;
+            } else {
+                item->protocol_version = event.protocol_version;
+                item->num_players = event.num_players;
+                item->max_players = event.max_players;
+                item->motd = event.motd;
+                item->status = item_status::REACHED;
+            }
+
+            break;
+        }
+    }
+}
+
+static void layout_server_item(ServerStatusItem* item)
+{
+    // Preserve the cursor at which we draw stuff
+    const ImVec2& cursor = ImGui::GetCursorScreenPos();
+    const ImVec2& padding = ImGui::GetStyle().FramePadding;
+    const ImVec2& spacing = ImGui::GetStyle().ItemSpacing;
+
+    const float item_width = ImGui::GetContentRegionAvail().x;
+    const float line_height = ImGui::GetTextLineHeightWithSpacing();
+    const std::string sid = std::format("###play_menu.servers.{}", static_cast<void*>(item));
+    if(ImGui::Selectable(sid.c_str(), (item == selected_server), 0, ImVec2(0.0, 2.0f * (line_height + padding.y + spacing.y)))) {
+        selected_server = item;
+        editing_server = false;
+    }
+
+    if(ImGui::IsItemHovered() && ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left)) {
+        // Double clicked - join the selected server
+        join_selected_server();
+    }
+
+    ImDrawList* draw_list = ImGui::GetWindowDrawList();
+
+    if(item == selected_server) {
+        const ImVec2 start = ImVec2(cursor.x, cursor.y);
+        const ImVec2 end = ImVec2(start.x + item_width, start.y + 2.0f * (line_height + padding.y + spacing.y));
+        draw_list->AddRect(start, end, ImGui::GetColorU32(ImGuiCol_Text), 0.0f, 0, globals::gui_scale);
+    }
+
+    const ImVec2 name_pos = ImVec2(cursor.x + padding.x + 0.5f * spacing.x, cursor.y + padding.y);
+    draw_list->AddText(name_pos, ImGui::GetColorU32(ImGuiCol_Text), item->name.c_str(), item->name.c_str() + item->name.size());
+
+    if(item->status == item_status::REACHED) {
+        auto stats = std::format("{}/{}", item->num_players, item->max_players);
+        auto stats_width = ImGui::CalcTextSize(stats.c_str(), stats.c_str() + stats.size()).x;
+        auto stats_pos = ImVec2(cursor.x + item_width - stats_width - padding.x, cursor.y + padding.y);
+        draw_list->AddText(stats_pos, ImGui::GetColorU32(ImGuiCol_TextDisabled), stats.c_str(), stats.c_str() + stats.size());
+
+        if(item->protocol_version != protocol::VERSION) {
+            auto warning_size = ImGui::CalcTextSize(WARNING_TOAST);
+            auto warning_pos = ImVec2(stats_pos.x - warning_size.x - padding.x - 4.0f * globals::gui_scale, cursor.y + padding.y);
+            auto warning_end = ImVec2(warning_pos.x + warning_size.x, warning_pos.y + warning_size.y);
+            draw_list->AddText(warning_pos, ImGui::GetColorU32(ImGuiCol_DragDropTarget), WARNING_TOAST);
+
+            if(ImGui::IsMouseHoveringRect(warning_pos, warning_end)) {
+                ImGui::BeginTooltip();
+
+                if(item->protocol_version < protocol::VERSION) {
+                    ImGui::TextUnformatted(str_outdated_server.c_str(), str_outdated_server.c_str() + str_outdated_server.size());
+                } else {
+                    ImGui::TextUnformatted(str_outdated_client.c_str(), str_outdated_client.c_str() + str_outdated_client.size());
+                }
+
+                ImGui::EndTooltip();
+            }
+        }
+    }
+
+    ImU32 motd_color = {};
+    const std::string* motd_text;
+
+    switch(item->status) {
+        case item_status::UNKNOWN:
+            motd_color = ImGui::GetColorU32(ImGuiCol_TextDisabled);
+            motd_text = &str_status_init;
+            break;
+        case item_status::PINGING:
+            motd_color = ImGui::GetColorU32(ImGuiCol_TextDisabled);
+            motd_text = &str_status_ping;
+            break;
+        case item_status::REACHED:
+            motd_color = ImGui::GetColorU32(ImGuiCol_TextDisabled);
+            motd_text = &item->motd;
+            break;
+        default:
+            motd_color = ImGui::GetColorU32(ImGuiCol_PlotLinesHovered);
+            motd_text = &str_status_fail;
+            break;
+    }
+
+    const ImVec2 motd_pos = ImVec2(cursor.x + padding.x + 0.5f * spacing.x, cursor.y + padding.y + line_height);
+    draw_list->AddText(motd_pos, motd_color, motd_text->c_str(), motd_text->c_str() + motd_text->size());
+}
+
+static void layout_server_edit(ServerStatusItem* item)
+{
+    if(needs_focus) {
+        ImGui::SetKeyboardFocusHere();
+        needs_focus = false;
+    }
+
+    ImGui::SetNextItemWidth(-0.25f * ImGui::GetContentRegionAvail().x);
+    ImGui::InputText("###play_menu.servers.edit_itemname", &input_itemname);
+    ImGui::SameLine();
+
+    const bool ignore_input = utils::is_whitespace(input_itemname) || input_hostname.empty();
+
+    ImGui::BeginDisabled(ignore_input);
+
+    if(ImGui::Button("OK###play_menu.servers.submit_input", ImVec2(-1.0f, 0.0f))
+        || (!ignore_input && ImGui::IsKeyPressed(ImGuiKey_Enter))) {
+        parse_hostname(item, input_hostname);
+        item->password = input_password;
+        item->name = input_itemname.substr(0, MAX_SERVER_ITEM_NAME);
+        item->status = item_status::UNKNOWN;
+        editing_server = false;
+        adding_server = false;
+
+        input_itemname.clear();
+        input_hostname.clear();
+
+        gui::bother::cancel(item->identity);
+    }
+
+    ImGui::EndDisabled();
+
+    ImGuiInputTextFlags hostname_flags = ImGuiInputTextFlags_CharsNoBlank;
+
+    if(client_game::streamer_mode.get_value()) {
+        // Hide server hostname to avoid things like
+        // followers flooding the server that is streamed online
+        hostname_flags |= ImGuiInputTextFlags_Password;
+    }
+
+    ImGui::SetNextItemWidth(-0.50f * ImGui::GetContentRegionAvail().x);
+    ImGui::InputText("###play_menu.servers.edit_hostname", &input_hostname, hostname_flags);
+    ImGui::SameLine();
+
+    ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
+    ImGui::InputText("###play_menu.servers.edit_password", &input_password, ImGuiInputTextFlags_Password);
+}
+
+static void layout_servers(void)
+{
+    if(ImGui::BeginListBox("###play_menu.servers.listbox", ImVec2(-1.0f, -1.0f))) {
+        for(ServerStatusItem* item : servers_deque) {
+            if(editing_server && item == selected_server) {
+                layout_server_edit(item);
+            } else {
+                layout_server_item(item);
+            }
+        }
+
+        ImGui::EndListBox();
+    }
+}
+
+static void layout_servers_buttons(void)
+{
+    auto avail_width = ImGui::GetContentRegionAvail().x;
+
+    // Can only join when selected and not editing
+    ImGui::BeginDisabled(!selected_server || editing_server);
+
+    if(ImGui::Button(str_join.c_str(), ImVec2(-0.50f * avail_width, 0.0f))) {
+        join_selected_server();
+    }
+
+    ImGui::EndDisabled();
+    ImGui::SameLine();
+
+    // Can only connect directly when not editing anything
+    ImGui::BeginDisabled(editing_server);
+
+    if(ImGui::Button(str_connect.c_str(), ImVec2(-1.00f, 0.0f))) {
+        globals::gui_screen = GUI_DIRECT_CONNECTION;
+    }
+
+    ImGui::EndDisabled();
+
+    // Can only add when not editing anything
+    ImGui::BeginDisabled(editing_server);
+
+    if(ImGui::Button(str_add.c_str(), ImVec2(-0.75f * avail_width, 0.0f))) {
+        add_new_server();
+    }
+
+    ImGui::EndDisabled();
+    ImGui::SameLine();
+
+    // Can only edit when selected and not editing
+    ImGui::BeginDisabled(!selected_server || editing_server);
+
+    if(ImGui::Button(str_edit.c_str(), ImVec2(-0.50f * avail_width, 0.0f))) {
+        edit_selected_server();
+    }
+
+    ImGui::EndDisabled();
+    ImGui::SameLine();
+
+    // Can only remove when selected and not editing
+    ImGui::BeginDisabled(!selected_server || editing_server);
+
+    if(ImGui::Button(str_remove.c_str(), ImVec2(-0.25f * avail_width, 0.0f))) {
+        remove_selected_server();
+    }
+
+    ImGui::EndDisabled();
+    ImGui::SameLine();
+
+    if(ImGui::Button(str_refresh.c_str(), ImVec2(-1.0f, 0.0f))) {
+        for(ServerStatusItem* item : servers_deque) {
+            if(item->status != item_status::PINGING) {
+                if(!editing_server || item != selected_server) {
+                    item->status = item_status::UNKNOWN;
+                    gui::bother::cancel(item->identity);
+                }
+            }
+        }
+    }
+}
+
+void gui::play_menu::init(void)
+{
+    if(auto file = PHYSFS_openRead(SERVERS_TXT)) {
+        auto source = std::string(PHYSFS_fileLength(file), char(0x00));
+        PHYSFS_readBytes(file, source.data(), source.size());
+        PHYSFS_close(file);
+
+        auto stream = std::istringstream(source);
+        auto line = std::string();
+
+        while(std::getline(stream, line)) {
+            auto parts = utils::split(line, "%");
+
+            auto item = new ServerStatusItem();
+            item->port = protocol::PORT;
+            item->protocol_version = protocol::VERSION;
+            item->max_players = UINT16_MAX;
+            item->num_players = UINT16_MAX;
+            item->identity = next_identity;
+            item->status = item_status::UNKNOWN;
+
+            next_identity += 1U;
+
+            parse_hostname(item, parts[0]);
+
+            if(parts.size() >= 2) {
+                item->password = parts[1];
+            } else {
+                item->password = std::string();
+            }
+
+            if(parts.size() >= 3) {
+                item->name = parts[2].substr(0, MAX_SERVER_ITEM_NAME);
+            } else {
+                item->name = DEFAULT_SERVER_NAME;
+            }
+
+            servers_deque.push_back(item);
+        }
+    }
+
+    globals::dispatcher.sink<io::GlfwKeyEvent>().connect<&on_glfw_key>();
+    globals::dispatcher.sink<LanguageSetEvent>().connect<&on_language_set>();
+    globals::dispatcher.sink<BotherResponseEvent>().connect<&on_bother_response>();
+}
+
+void gui::play_menu::shutdown(void)
+{
+    std::ostringstream stream;
+
+    for(const auto item : servers_deque) {
+        stream << std::format("{}:{}%{}%{}", item->hostname, item->port, item->password, item->name) << std::endl;
+    }
+
+    if(auto file = PHYSFS_openWrite(SERVERS_TXT)) {
+        auto source = stream.str();
+        PHYSFS_writeBytes(file, source.data(), source.size());
+        PHYSFS_close(file);
+    }
+
+    for(auto item : servers_deque)
+        delete item;
+    servers_deque.clear();
+}
+
+void gui::play_menu::layout(void)
+{
+    const auto viewport = ImGui::GetMainViewport();
+    const auto window_start = ImVec2(viewport->Size.x * 0.05f, viewport->Size.y * 0.05f);
+    const auto window_size = ImVec2(viewport->Size.x * 0.90f, viewport->Size.y * 0.90f);
+
+    ImGui::SetNextWindowPos(window_start);
+    ImGui::SetNextWindowSize(window_size);
+
+    if(ImGui::Begin("###play_menu", nullptr, WINDOW_FLAGS)) {
+        ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(3.0f * globals::gui_scale, 3.0f * globals::gui_scale));
+
+        if(ImGui::BeginTabBar("###play_menu.tabs", ImGuiTabBarFlags_FittingPolicyResizeDown)) {
+            if(ImGui::TabItemButton("<<")) {
+                globals::gui_screen = GUI_MAIN_MENU;
+                selected_server = nullptr;
+                editing_server = false;
+            }
+
+            if(ImGui::BeginTabItem(str_tab_servers.c_str())) {
+                if(ImGui::BeginChild("###play_menu.servers.child", ImVec2(0.0f, -2.0f * ImGui::GetFrameHeightWithSpacing()))) {
+                    layout_servers();
+                }
+
+                ImGui::EndChild();
+
+                layout_servers_buttons();
+
+                ImGui::EndTabItem();
+            }
+
+            ImGui::EndTabBar();
+        }
+
+        ImGui::PopStyleVar();
+    }
+
+    ImGui::End();
+}
+
+void gui::play_menu::update_late(void)
+{
+    for(auto item : servers_deque) {
+        if(item->status == item_status::UNKNOWN) {
+            gui::bother::ping(item->identity, item->hostname.c_str(), item->port);
+            item->status = item_status::PINGING;
+            continue;
+        }
+    }
+}