node_repository.h

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// BSD 3-Clause License
// Copyright (c) 2021-2025, 🍀☀🌕🌥 🌊
// See the LICENSE file in the project root for full license information.
 
#pragma once
 
#include "kcenon/pacs/client/remote_node.h"
 
#include <kcenon/common/patterns/result.h>
 
#include <memory>
#include <optional>
#include <string>
#include <string_view>
#include <vector>
 
#ifdef PACS_WITH_DATABASE_SYSTEM
 
#include "kcenon/pacs/storage/base_repository.h"
 
namespace kcenon::pacs::storage {
 
class node_repository
    : public base_repository<client::remote_node, std::string> {
public:
    explicit node_repository(std::shared_ptr<pacs_database_adapter> db);
    ~node_repository() override = default;
 
    node_repository(const node_repository&) = delete;
    auto operator=(const node_repository&) -> node_repository& = delete;
    node_repository(node_repository&&) noexcept = default;
    auto operator=(node_repository&&) noexcept -> node_repository& = default;
 
    // =========================================================================
    // Domain-Specific Operations
    // =========================================================================
 
    [[nodiscard]] auto find_by_pk(int64_t pk) -> result_type;
 
    [[nodiscard]] auto find_all_nodes() -> list_result_type;
 
    [[nodiscard]] auto find_by_status(client::node_status status)
        -> list_result_type;
 
    // =========================================================================
    // Status Updates
    // =========================================================================
 
    [[nodiscard]] auto update_status(
        std::string_view node_id,
        client::node_status status,
        std::string_view error_message = "") -> VoidResult;
 
    [[nodiscard]] auto update_last_verified(std::string_view node_id)
        -> VoidResult;
 
protected:
    // =========================================================================
    // base_repository overrides
    // =========================================================================
 
    [[nodiscard]] auto map_row_to_entity(const database_row& row) const
        -> client::remote_node override;
 
    [[nodiscard]] auto entity_to_row(const client::remote_node& entity) const
        -> std::map<std::string, database_value> override;
 
    [[nodiscard]] auto get_pk(const client::remote_node& entity) const
        -> std::string override;
 
    [[nodiscard]] auto has_pk(const client::remote_node& entity) const
        -> bool override;
 
    [[nodiscard]] auto select_columns() const
        -> std::vector<std::string> override;
 
private:
    [[nodiscard]] auto parse_timestamp(const std::string& str) const
        -> std::chrono::system_clock::time_point;
 
    [[nodiscard]] auto format_timestamp(
        std::chrono::system_clock::time_point tp) const -> std::string;
};
 
}  // namespace kcenon::pacs::storage
 
#else  // !PACS_WITH_DATABASE_SYSTEM
 
// Legacy interface for builds without database_system
struct sqlite3;
 
namespace kcenon::pacs::storage {
 
template <typename T>
using Result = kcenon::common::Result<T>;
 
using VoidResult = kcenon::common::VoidResult;
 
class node_repository {
public:
    explicit node_repository(sqlite3* db);
    ~node_repository();
 
    node_repository(const node_repository&) = delete;
    auto operator=(const node_repository&) -> node_repository& = delete;
    node_repository(node_repository&&) noexcept;
    auto operator=(node_repository&&) noexcept -> node_repository&;
 
    [[nodiscard]] auto upsert(const client::remote_node& node) -> Result<int64_t>;
    [[nodiscard]] auto find_by_id(std::string_view node_id) const
        -> std::optional<client::remote_node>;
    [[nodiscard]] auto find_by_pk(int64_t pk) const
        -> std::optional<client::remote_node>;
    [[nodiscard]] auto find_all() const -> std::vector<client::remote_node>;
    [[nodiscard]] auto find_by_status(client::node_status status) const
        -> std::vector<client::remote_node>;
    [[nodiscard]] auto remove(std::string_view node_id) -> VoidResult;
    [[nodiscard]] auto exists(std::string_view node_id) const -> bool;
    [[nodiscard]] auto count() const -> size_t;
 
    [[nodiscard]] auto update_status(
        std::string_view node_id,
        client::node_status status,
        std::string_view error_message = "") -> VoidResult;
    [[nodiscard]] auto update_last_verified(std::string_view node_id)
        -> VoidResult;
 
    [[nodiscard]] auto is_valid() const noexcept -> bool;
 
private:
    [[nodiscard]] auto parse_row(void* stmt) const -> client::remote_node;
 
    sqlite3* db_{nullptr};
};
 
}  // namespace kcenon::pacs::storage
 
#endif  // PACS_WITH_DATABASE_SYSTEM