XCEngine/new_editor/app/Features/Project/ProjectBrowserModel.h

#pragma once

#include <XCEditor/Collections/UIEditorTreeView.h>

#include <XCEngine/UI/Types.h>

#include <cstdint>
#include <filesystem>
#include <optional>
#include <string>
#include <string_view>
#include <vector>

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

class ProjectBrowserModel {
public:
    enum class ItemKind : std::uint8_t {
        Folder = 0,
        Scene,
        Model,
        Material,
        Texture,
        Script,
        File
    };

    struct BreadcrumbSegment {
        std::string label = {};
        std::string targetFolderId = {};
        bool current = false;
    };

    struct FolderEntry {
        std::string itemId = {};
        std::filesystem::path absolutePath = {};
        std::string label = {};
    };

    struct AssetEntry {
        std::string itemId = {};
        std::filesystem::path absolutePath = {};
        std::string displayName = {};
        std::string nameWithExtension = {};
        std::string extensionLower = {};
        ItemKind kind = ItemKind::File;
        bool directory = false;
        bool canOpen = false;
        bool canPreview = false;
    };

    void Initialize(const std::filesystem::path& repoRoot);
    void SetFolderIcon(const ::XCEngine::UI::UITextureHandle& icon);
    void Refresh();

    bool Empty() const;
    std::filesystem::path GetProjectRootPath() const;
    const std::filesystem::path& GetAssetsRootPath() const;
    const std::vector<FolderEntry>& GetFolderEntries() const;
    const std::vector<Widgets::UIEditorTreeViewItem>& GetTreeItems() const;
    const std::vector<AssetEntry>& GetAssetEntries() const;
    const std::string& GetCurrentFolderId() const;
    bool IsAssetsRoot(std::string_view itemId) const;

    const FolderEntry* FindFolderEntry(std::string_view itemId) const;
    const AssetEntry* FindAssetEntry(std::string_view itemId) const;
    std::optional<std::filesystem::path> ResolveItemAbsolutePath(
        std::string_view itemId) const;
    std::string BuildProjectRelativePath(std::string_view itemId) const;
    bool NavigateToFolder(std::string_view itemId);
    bool CreateFolder(
        std::string_view parentFolderId,
        std::string_view requestedName,
        std::string* createdFolderId = nullptr);
    bool CreateMaterial(
        std::string_view parentFolderId,
        std::string_view requestedName,
        std::string* createdItemId = nullptr);
    bool RenameItem(
        std::string_view itemId,
        std::string_view newName,
        std::string* renamedItemId = nullptr);
    bool DeleteItem(std::string_view itemId);
    bool CanMoveItemToFolder(
        std::string_view itemId,
        std::string_view targetFolderId) const;
    bool MoveItemToFolder(
        std::string_view itemId,
        std::string_view targetFolderId,
        std::string* movedItemId = nullptr);
    std::optional<std::string> GetParentFolderId(std::string_view itemId) const;
    bool CanReparentFolder(std::string_view sourceFolderId, std::string_view targetParentId) const;
    bool ReparentFolder(
        std::string_view sourceFolderId,
        std::string_view targetParentId,
        std::string* movedFolderId = nullptr);
    bool MoveFolderToRoot(
        std::string_view sourceFolderId,
        std::string* movedFolderId = nullptr);
    std::vector<BreadcrumbSegment> BuildBreadcrumbSegments() const;
    std::vector<std::string> CollectCurrentFolderAncestorIds() const;
    std::vector<std::string> BuildAncestorFolderIds(std::string_view itemId) const;

private:
    void RefreshFolderTree();
    void RefreshAssetList();
    void EnsureValidCurrentFolder();

    std::filesystem::path m_assetsRootPath = {};
    std::vector<FolderEntry> m_folderEntries = {};
    std::vector<Widgets::UIEditorTreeViewItem> m_treeItems = {};
    std::vector<AssetEntry> m_assetEntries = {};
    ::XCEngine::UI::UITextureHandle m_folderIcon = {};
    std::string m_currentFolderId = {};
};

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