EditorTransactionService.h

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#pragma once
#include "common/Export.h"
 
 
#include "editor/EditorTransactionConsumer.h"
 
namespace eve::editor {
 
class IEditorTransactionBackend {
public:
    virtual ~IEditorTransactionBackend() = default;
 
    [[nodiscard]] virtual Result<TransactionId> begin(TransactionSpec specification) = 0;
    [[nodiscard]] virtual Result<void> append(DomainOperation operation) = 0;
    [[nodiscard]] virtual Result<EditorDryRunReport> preview() = 0;
    [[nodiscard]] virtual Result<TransactionReceipt> commit() = 0;
    [[nodiscard]] virtual Result<void> discard() = 0;
    [[nodiscard]] virtual Result<TransactionReceipt> retry() = 0;
    [[nodiscard]] virtual Result<TransactionReceipt> undo() = 0;
    [[nodiscard]] virtual Result<TransactionReceipt> redo() = 0;
 
    [[nodiscard]] virtual bool active() const noexcept = 0;
    [[nodiscard]] virtual bool canUndo() const noexcept = 0;
    [[nodiscard]] virtual bool canRedo() const noexcept = 0;
};
 
class EVENGINE_API_ORCHESTRATION LocalTransactionBackend final : public IEditorTransactionBackend {
public:
    explicit LocalTransactionBackend(IEditAuthority* authority = nullptr) : consumer_(authority) {}
 
    [[nodiscard]] Result<void> setAuthority(IEditAuthority* authority);
    [[nodiscard]] Result<TransactionId> begin(TransactionSpec specification) override;
    [[nodiscard]] Result<void> append(DomainOperation operation) override;
    [[nodiscard]] Result<EditorDryRunReport> preview() override;
    [[nodiscard]] Result<TransactionReceipt> commit() override;
    [[nodiscard]] Result<void> discard() override;
    [[nodiscard]] Result<void> rollback();
    [[nodiscard]] Result<TransactionReceipt> retry() override;
    [[nodiscard]] Result<TransactionReceipt> undo() override;
    [[nodiscard]] Result<TransactionReceipt> redo() override;
 
    [[nodiscard]] bool active() const noexcept override { return consumer_.active(); }
    [[nodiscard]] bool canUndo() const noexcept override { return consumer_.canUndo(); }
    [[nodiscard]] bool canRedo() const noexcept override { return consumer_.canRedo(); }
    void clear() { consumer_.clear(); }
 
private:
    static Result<TransactionReceipt> project(eve::Result<EditorTransactionRecord>&& result);
    static Result<EditorDryRunReport> project(eve::Result<EditorDryRunReport>&& result);
    static Result<TransactionId>      project(eve::Result<TransactionId>&& result);
    static Result<void>               project(eve::Result<void>&& result);
 
    EditorTransactionConsumer consumer_;
};
 
}  // namespace eve::editor