project_layout_metadata_provider.hpp

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#pragma once
 
#include <cstddef>
#include <filesystem>
#include <map>
#include <set>
#include <string>
#include <utility>
#include <vector>
 
#include "gsl/pointers"
 
#include "porytiles/domain/services/layout_metadata_provider.hpp"
#include "porytiles/infra/models/project_layout_metadata.hpp"
#include "porytiles/utilities/result/chainable_result.hpp"
#include "porytiles/utilities/text/text_formatter.hpp"
#include "porytiles/xcut/diagnostics/user_diagnostics.hpp"
 
namespace porytiles {
 
class ProjectLayoutMetadataProvider : public LayoutMetadataProvider {
  public:
    ProjectLayoutMetadataProvider(
        std::filesystem::path project_root,
        gsl::not_null<const TextFormatter *> format,
        gsl::not_null<const UserDiagnostics *> diag)
        : project_root_{std::move(project_root)}, format_{format}, diag_{diag}
    {
    }
 
    [[nodiscard]] bool exists(const std::string &layout_name_or_id) const override;
 
    [[nodiscard]] ChainableResult<std::size_t> width(const std::string &layout_name_or_id) const override;
 
    [[nodiscard]] ChainableResult<std::size_t> height(const std::string &layout_name_or_id) const override;
 
    [[nodiscard]] ChainableResult<std::string> primary_tileset(const std::string &layout_name_or_id) const override;
 
    [[nodiscard]] ChainableResult<std::string> secondary_tileset(const std::string &layout_name_or_id) const override;
 
    [[nodiscard]] ChainableResult<std::set<std::string>> layout_names() const override;
 
    [[nodiscard]] ChainableResult<std::set<std::string>> layout_ids() const override;
 
    [[nodiscard]] ChainableResult<std::string> layouts_table_label() const;
 
    [[nodiscard]] ChainableResult<std::filesystem::path> border_filepath(const std::string &layout_name_or_id) const;
 
    [[nodiscard]] ChainableResult<std::filesystem::path> blockdata_filepath(const std::string &layout_name_or_id) const;
 
    void invalidate_metadata_cache() const;
 
  private:
    std::filesystem::path project_root_;
    const TextFormatter *format_;
    const UserDiagnostics *diag_;
 
    // Lazy-loaded cache for parsed layout data (mutable for const methods)
    mutable bool layouts_parsed_{false};
    mutable std::string layouts_table_label_;
    mutable std::vector<ProjectLayoutMetadata> layout_entries_;
    mutable std::map<std::string, std::size_t> layout_index_;
};
 
} // namespace porytiles