#include "EditorContext.h"

#include <algorithm>
#include <utility>

namespace XCEngine::UI::Editor::App {

namespace {

constexpr std::size_t kMaxConsoleEntries = 256u;

std::string ResolveViewportStatusMessage(
    const UIEditorShellInteractionResult& result) {
    if (result.viewportInputFrame.captureStarted) {
        return "Viewport capture started.";
    }
    if (result.viewportInputFrame.captureEnded) {
        return "Viewport capture ended.";
    }
    if (result.viewportInputFrame.focusGained) {
        return "Viewport focused.";
    }
    if (result.viewportInputFrame.focusLost) {
        return "Viewport focus lost.";
    }
    if (result.viewportInputFrame.pointerPressedInside) {
        return "Viewport pointer down.";
    }
    if (result.viewportInputFrame.pointerReleasedInside) {
        return "Viewport pointer up.";
    }
    if (result.viewportInputFrame.pointerMoved) {
        return "Viewport pointer move.";
    }
    if (result.viewportInputFrame.wheelDelta != 0.0f) {
        return "Viewport wheel.";
    }

    return {};
}

} // namespace

void EditorContext::SetReadyStatus() {
    SetStatus("Ready", "Old editor shell baseline loaded.");
}

void EditorContext::SetStatus(
    std::string status,
    std::string message) {
    if (m_lastStatus != status || m_lastMessage != message) {
        AppendConsoleEntry(status, message);
    }
    m_lastStatus = std::move(status);
    m_lastMessage = std::move(message);
}

void EditorContext::UpdateStatusFromShellResult(
    const UIEditorWorkspaceController& workspaceController,
    const UIEditorShellInteractionResult& result) {
    (void)workspaceController;

    if (result.commandDispatched) {
        SetStatus(
            std::string(GetUIEditorCommandDispatchStatusName(result.commandDispatchResult.status)),
            result.commandDispatchResult.message.empty()
                ? result.commandDispatchResult.displayName
                : result.commandDispatchResult.message);
        return;
    }

    if (result.workspaceResult.dockHostResult.layoutChanged) {
        SetStatus("Layout", result.workspaceResult.dockHostResult.layoutResult.message);
        return;
    }

    if (result.workspaceResult.dockHostResult.commandExecuted) {
        SetStatus("Workspace", result.workspaceResult.dockHostResult.commandResult.message);
        return;
    }

    if (!result.viewportPanelId.empty()) {
        std::string message = ResolveViewportStatusMessage(result);
        if (!message.empty()) {
            SetStatus(result.viewportPanelId, std::move(message));
        }
        return;
    }

    if (!result.menuMutation.changed) {
        return;
    }

    if (!result.itemId.empty() && !result.menuMutation.openedPopupId.empty()) {
        SetStatus("Menu", result.itemId + " opened child popup.");
    } else if (!result.menuId.empty() && !result.menuMutation.openedPopupId.empty()) {
        SetStatus("Menu", result.menuId + " opened.");
    } else {
        SetStatus("Menu", "Popup chain dismissed.");
    }
}

void EditorContext::AppendConsoleEntry(
    std::string channel,
    std::string message) {
    EditorConsoleEntry entry = {};
    entry.channel = std::move(channel);
    entry.message = std::move(message);
    m_session.consoleEntries.push_back(std::move(entry));
    if (m_session.consoleEntries.size() > kMaxConsoleEntries) {
        m_session.consoleEntries.erase(m_session.consoleEntries.begin());
    }
}

} // namespace XCEngine::UI::Editor::App