patient_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/storage/patient_record.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 patient_repository : public base_repository<patient_record, int64_t> {
public:
    explicit patient_repository(std::shared_ptr<pacs_database_adapter> db);
    ~patient_repository() override = default;
 
    patient_repository(const patient_repository&) = delete;
    auto operator=(const patient_repository&) -> patient_repository& = delete;
    patient_repository(patient_repository&&) noexcept = default;
    auto operator=(patient_repository&&) noexcept -> patient_repository& = default;
 
    // =========================================================================
    // Domain-Specific Operations
    // =========================================================================
 
    [[nodiscard]] auto upsert_patient(std::string_view patient_id,
                                      std::string_view patient_name = "",
                                      std::string_view birth_date = "",
                                      std::string_view sex = "")
        -> Result<int64_t>;
 
    [[nodiscard]] auto upsert_patient(const patient_record& record)
        -> Result<int64_t>;
 
    [[nodiscard]] auto find_patient(std::string_view patient_id)
        -> std::optional<patient_record>;
 
    [[nodiscard]] auto find_patient_by_pk(int64_t pk)
        -> std::optional<patient_record>;
 
    [[nodiscard]] auto search_patients(const patient_query& query)
        -> Result<std::vector<patient_record>>;
 
    [[nodiscard]] auto delete_patient(std::string_view patient_id)
        -> VoidResult;
 
    [[nodiscard]] auto patient_count() -> Result<size_t>;
 
protected:
    // =========================================================================
    // base_repository overrides
    // =========================================================================
 
    [[nodiscard]] auto map_row_to_entity(const database_row& row) const
        -> patient_record override;
 
    [[nodiscard]] auto entity_to_row(const patient_record& entity) const
        -> std::map<std::string, database_value> override;
 
    [[nodiscard]] auto get_pk(const patient_record& entity) const
        -> int64_t override;
 
    [[nodiscard]] auto has_pk(const patient_record& entity) const
        -> bool override;
 
    [[nodiscard]] auto select_columns() const
        -> std::vector<std::string> override;
 
private:
    [[nodiscard]] static auto to_like_pattern(std::string_view pattern)
        -> std::string;
 
    [[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
 
struct sqlite3;
 
namespace kcenon::pacs::storage {
 
template <typename T>
using Result = kcenon::common::Result<T>;
 
using VoidResult = kcenon::common::VoidResult;
 
class patient_repository {
public:
    explicit patient_repository(sqlite3* db);
    ~patient_repository();
 
    patient_repository(const patient_repository&) = delete;
    auto operator=(const patient_repository&) -> patient_repository& = delete;
    patient_repository(patient_repository&&) noexcept;
    auto operator=(patient_repository&&) noexcept -> patient_repository&;
 
    [[nodiscard]] auto upsert_patient(std::string_view patient_id,
                                      std::string_view patient_name = "",
                                      std::string_view birth_date = "",
                                      std::string_view sex = "")
        -> Result<int64_t>;
    [[nodiscard]] auto upsert_patient(const patient_record& record)
        -> Result<int64_t>;
    [[nodiscard]] auto find_patient(std::string_view patient_id) const
        -> std::optional<patient_record>;
    [[nodiscard]] auto find_patient_by_pk(int64_t pk) const
        -> std::optional<patient_record>;
    [[nodiscard]] auto search_patients(const patient_query& query) const
        -> Result<std::vector<patient_record>>;
    [[nodiscard]] auto delete_patient(std::string_view patient_id)
        -> VoidResult;
    [[nodiscard]] auto patient_count() const -> Result<size_t>;
 
private:
    [[nodiscard]] auto parse_patient_row(void* stmt) const -> patient_record;
    [[nodiscard]] static auto to_like_pattern(std::string_view pattern)
        -> std::string;
 
    sqlite3* db_{nullptr};
};
 
}  // namespace kcenon::pacs::storage
 
#endif  // PACS_WITH_DATABASE_SYSTEM