// Copyright Contributors to the DNF5 project.
// Copyright Contributors to the libdnf project.
// SPDX-License-Identifier: LGPL-2.1-or-later
//
// This file is part of libdnf: https://github.com/rpm-software-management/libdnf/
//
// Libdnf is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 2.1 of the License, or
// (at your option) any later version.
//
// Libdnf is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with libdnf.  If not, see <https://www.gnu.org/licenses/>.

#ifndef LIBDNF5_BASE_GOAL_ELEMENTS_HPP
#define LIBDNF5_BASE_GOAL_ELEMENTS_HPP


#include "libdnf5/advisory/advisory_query.hpp"
#include "libdnf5/comps/group/package.hpp"
#include "libdnf5/conf/config_main.hpp"
#include "libdnf5/defs.h"
#include "libdnf5/rpm/nevra.hpp"

#include <cstdint>


namespace libdnf5 {


/// Define a type of a broken solver rule
enum class ProblemRules {
    RULE_DISTUPGRADE = 1,
    RULE_INFARCH,
    RULE_UPDATE,
    RULE_JOB,
    RULE_JOB_UNSUPPORTED,
    RULE_JOB_NOTHING_PROVIDES_DEP,
    RULE_JOB_UNKNOWN_PACKAGE,
    RULE_JOB_PROVIDED_BY_SYSTEM,
    RULE_PKG,
    RULE_BEST_1,
    RULE_BEST_2,
    RULE_PKG_NOT_INSTALLABLE_1,
    RULE_PKG_NOT_INSTALLABLE_2,
    RULE_PKG_NOT_INSTALLABLE_3,
    RULE_PKG_NOT_INSTALLABLE_4,
    RULE_PKG_NOTHING_PROVIDES_DEP,
    RULE_PKG_SAME_NAME,
    RULE_PKG_CONFLICTS,
    RULE_PKG_OBSOLETES,
    RULE_PKG_INSTALLED_OBSOLETES,
    RULE_PKG_IMPLICIT_OBSOLETES,
    RULE_PKG_REQUIRES,
    RULE_PKG_SELF_CONFLICT,
    RULE_YUMOBS,
    RULE_UNKNOWN,
    RULE_PKG_REMOVAL_OF_PROTECTED,
    RULE_PKG_REMOVAL_OF_RUNNING_KERNEL,
    RULE_MODULE_DISTUPGRADE,
    RULE_MODULE_INFARCH,
    RULE_MODULE_UPDATE,
    RULE_MODULE_JOB,
    RULE_MODULE_JOB_UNSUPPORTED,
    RULE_MODULE_JOB_NOTHING_PROVIDES_DEP,
    RULE_MODULE_JOB_UNKNOWN_PACKAGE,
    RULE_MODULE_JOB_PROVIDED_BY_SYSTEM,
    RULE_MODULE_PKG,
    RULE_MODULE_BEST_1,
    RULE_MODULE_BEST_2,
    RULE_MODULE_PKG_NOT_INSTALLABLE_1,
    RULE_MODULE_PKG_NOT_INSTALLABLE_2,
    RULE_MODULE_PKG_NOT_INSTALLABLE_3,
    RULE_MODULE_PKG_NOT_INSTALLABLE_4,
    RULE_MODULE_PKG_NOTHING_PROVIDES_DEP,
    RULE_MODULE_PKG_SAME_NAME,
    RULE_MODULE_PKG_CONFLICTS,
    RULE_MODULE_PKG_OBSOLETES,
    RULE_MODULE_PKG_INSTALLED_OBSOLETES,
    RULE_MODULE_PKG_IMPLICIT_OBSOLETES,
    RULE_MODULE_PKG_REQUIRES,
    RULE_MODULE_PKG_SELF_CONFLICT,
    RULE_MODULE_YUMOBS,
    RULE_MODULE_UNKNOWN,
    RULE_PKG_INSTALLED_CONFLICTS,
    RULE_PKG_INSTALLED_REQUIRES,
};

/// Define a type of information, hint, or problem gathered during libdnf5::Goal::resolve()
enum class GoalProblem : uint32_t {
    NO_PROBLEM = 0,
    SOLVER_ERROR = (1 << 0),
    NOT_FOUND = (1 << 1),
    EXCLUDED = (1 << 2),
    ONLY_SRC = (1 << 3),
    NOT_FOUND_IN_REPOSITORIES = (1 << 4),
    NOT_INSTALLED = (1 << 5),
    NOT_INSTALLED_FOR_ARCHITECTURE = (1 << 6),
    HINT_ICASE = (1 << 7),
    HINT_ALTERNATIVES = (1 << 8),
    INSTALLED_LOWEST_VERSION = (1 << 9),
    INSTALLED_IN_DIFFERENT_VERSION = (1 << 10),
    NOT_AVAILABLE = (1 << 11),
    ALREADY_INSTALLED = (1 << 12),
    SOLVER_PROBLEM_STRICT_RESOLVEMENT = (1 << 13),
    WRITE_DEBUG = (1 << 14),
    UNSUPPORTED_ACTION = (1 << 15),
    MULTIPLE_STREAMS = (1 << 16),
    EXCLUDED_VERSIONLOCK = (1 << 17),
    /// Error in module defaults detected during resolvement of module dependencies
    MODULE_SOLVER_ERROR_DEFAULTS = (1 << 18),
    /// Problem with latest modules during resolvement of module dependencies
    MODULE_SOLVER_ERROR_LATEST = (1 << 19),
    /// Error detected during resolvement of module dependencies
    MODULE_SOLVER_ERROR = (1 << 20),
    MODULE_CANNOT_SWITH_STREAMS = (1 << 21),
    /// Error when transaction contains additional unexpected elements.
    /// Used when replaying transactions.
    EXTRA = (1 << 22),
    MALFORMED = (1 << 23),
    NOT_FOUND_DEBUGINFO = (1 << 24),
    NOT_FOUND_DEBUGSOURCE = (1 << 25),
    MERGE_ERROR = (1 << 26),
    NOT_FOUND_IN_ADVISORIES = (1 << 27)
};

/// Types of Goal actions
enum class GoalAction {
    INSTALL,
    INSTALL_OR_REINSTALL,
    INSTALL_VIA_PROVIDE,
    INSTALL_BY_COMPS,
    REINSTALL,
    UPGRADE,
    UPGRADE_MINIMAL,
    UPGRADE_ALL,
    UPGRADE_ALL_MINIMAL,
    DISTRO_SYNC,
    DISTRO_SYNC_ALL,
    DOWNGRADE,
    REMOVE,
    RESOLVE,
    REASON_CHANGE,
    ENABLE,
    DISABLE,
    RESET,
    REPLAY_PARSE,
    REPLAY_INSTALL,
    REPLAY_REMOVE,
    REPLAY_UPGRADE,
    REPLAY_REINSTALL,
    REPLAY_REASON_CHANGE,
    REPLAY_REASON_OVERRIDE,
    REVERT_COMPS_UPGRADE,
    INSTALL_DEBUG,
    MERGE
};

/// Convert GoalAction enum to user-readable string
LIBDNF_API std::string goal_action_to_string(GoalAction action);

/// Check whether the action is a replay action
LIBDNF_API bool goal_action_is_replay(GoalAction action);

/// Settings for GoalJobSettings
enum class GoalSetting { AUTO, SET_TRUE, SET_FALSE };

/// Unresolved or resolved values based on GoalSetting
enum class GoalUsedSetting { UNUSED, USED_TRUE, USED_FALSE };

/// Settings for which comps types should be preffered in case both match.
enum class CompsTypePreferred { BOTH, GROUP, ENVIRONMENT };

/// Configure SPEC resolving.
/// Important for queries that resolve SPEC.
struct LIBDNF_API ResolveSpecSettings {
public:
    ResolveSpecSettings();
    ~ResolveSpecSettings();

    ResolveSpecSettings(const ResolveSpecSettings & src);
    ResolveSpecSettings & operator=(const ResolveSpecSettings & src);

    ResolveSpecSettings(ResolveSpecSettings && src) noexcept;
    ResolveSpecSettings & operator=(ResolveSpecSettings && src) noexcept;

    /// Set whether to match case-insensitively
    ///
    /// Default: false
    void set_ignore_case(bool ignore_case);
    bool get_ignore_case() const;

    /// Set whether packages' nevras should be considered during SPEC matching
    ///
    /// Default: true
    void set_with_nevra(bool with_nevra);
    bool get_with_nevra() const;

    /// Set whether packages' provides should be considered during SPEC matching
    ///
    /// Default: true
    void set_with_provides(bool with_provides);
    bool get_with_provides() const;

    /// Set whether package's files should be considered during SPEC matching
    /// It will check if SPEC starts with "/" or "*/" and if it matches any file in a package
    ///
    /// Default: true
    void set_with_filenames(bool with_filenames);
    bool get_with_filenames() const;

    /// Set whether package's binaries should be considered during SPEC matching
    /// It will check whether SPEC is a binary -> `/usr/(s)bin/<SPEC>`
    ///
    /// Default: true
    void set_with_binaries(bool with_binaries);
    bool get_with_binaries() const;

    /// Set whether to expand globs in package specs using fnmatch
    ///
    /// Default: true
    void set_expand_globs(bool expand_globs);
    bool get_expand_globs() const;

    /// When matching packages' nevras is enabled specify allowed nevra forms.
    ///
    /// The default can be obtained from libdnf5::rpm::Nevra::get_default_pkg_spec_forms().
    void set_nevra_forms(std::vector<libdnf5::rpm::Nevra::Form> nevra_forms);
    std::vector<libdnf5::rpm::Nevra::Form> get_nevra_forms() const;

    /// Set whether groups' ids should be considered during group SPEC matching
    ///
    /// Default: true
    void set_group_with_id(bool group_with_id);
    bool get_group_with_id() const;

    /// Set whether groups' names should be considered during group SPEC matching
    ///
    /// Default: false
    void set_group_with_name(bool group_with_name);
    bool get_group_with_name() const;

    /// Configure whether to search in groups when matching SPEC in group ids or names.
    /// Historically group SPEC could also mean an environment. These flags
    /// configure in which entities the spec is searched for.
    ///
    /// Default: true
    void set_group_search_groups(bool search_groups);
    bool get_group_search_groups() const;

    /// Configure whether to search in environments when matching SPEC in group ids or names.
    ///
    /// Default: true
    void set_group_search_environments(bool search_environments);
    bool get_group_search_environments() const;

private:
    class LIBDNF_LOCAL Impl;
    std::unique_ptr<Impl> p_impl;
};

struct LIBDNF_API GoalJobSettings : public ResolveSpecSettings {
public:
    GoalJobSettings();
    ~GoalJobSettings();

    GoalJobSettings(const GoalJobSettings & src);
    GoalJobSettings(GoalJobSettings && src) noexcept;
    GoalJobSettings & operator=(const GoalJobSettings & src);
    GoalJobSettings & operator=(GoalJobSettings && src) noexcept;

    /// Return used value for skip_broken
    GoalUsedSetting get_used_skip_broken() const;
    /// Return used value for skip_unavailable
    GoalUsedSetting get_used_skip_unavailable() const;
    /// Return used value for best
    GoalUsedSetting get_used_best() const;
    /// Return used value for clean_requirements_on_remove
    GoalUsedSetting get_used_clean_requirements_on_remove() const;

    /// Optionally set AdvisoryQuery that is used to filter packages (used for upgrade).
    /// Upgrades considers only packages that resolve some advisory in specified AdvisoryQuery.
    ///
    /// By default is is empty and no packages are filtered.
    void set_advisory_filter(const libdnf5::advisory::AdvisoryQuery & filter);
    const libdnf5::advisory::AdvisoryQuery * get_advisory_filter() const;

    /// Which types of group packages are going to be installed with the group.
    ///
    /// Default is taken from ConfigMain.group_package_types
    void set_group_package_types(libdnf5::comps::PackageType type);
    const libdnf5::comps::PackageType * get_group_package_types() const;

    /// If set to true, group operations (install / remove / upgrade) will only work
    /// with the group itself, but will not add to the transaction any packages.
    ///
    /// Default: false
    void set_group_no_packages(bool group_no_packages);
    bool get_group_no_packages() const;

    /// If set to true, environments operations (install / remove / upgrade) will only work
    /// with the environment itself, but will not add to any groups to the transaction.
    ///
    /// Default: false
    void set_environment_no_groups(bool environment_no_groups);
    bool get_environment_no_groups() const;

    /// Set which comps type (GROUP or ENVIRONMENT) is preffered in case both match.
    /// If only one type matches, it is selected regardless.
    ///
    /// By default, both groups and environments will be selected if both match.
    void set_comps_type_preferred(CompsTypePreferred comps_type_preferred);
    CompsTypePreferred get_comps_type_preferred() const;

    /// Set whether to report packages providing alternatives (``alternative-for(..)`` provide) and packages
    /// with different letter capitalization when no matches are found.
    ///
    /// Default: true
    void set_report_hint(bool report_hint);
    bool get_report_hint() const;

    /// Resolve any dependency problems by removing packages that are causing problems from the transaction.
    ///
    /// By default the value is taken from ``skip_broken`` configuration option.
    void set_skip_broken(GoalSetting skip_broken);
    GoalSetting get_skip_broken() const;

    /// Allow skipping packages that are unavailable.
    ///
    /// By default the value is taken from a configuration option ``skip_unavailable`` except for remove action
    /// which defaults to true.
    void set_skip_unavailable(GoalSetting skip_unavailable);
    GoalSetting get_skip_unavailable() const;

    /// Try the best available package versions in transactions.
    ///
    /// By default the value is taken from ``best`` configuration option.
    void set_best(GoalSetting best);
    GoalSetting get_best() const;

    /// Remove dependencies that are no longer used during ``dnf remove``.
    ///
    /// By default the value is false except for remove action which defaults to value from
    /// clean_requirements_on_remove configuration option.
    void set_clean_requirements_on_remove(GoalSetting clean_requirements_on_remove);
    GoalSetting get_clean_requirements_on_remove() const;

    /// Not implemented yet
    void set_from_repo_ids(std::vector<std::string> from_repo_ids);
    std::vector<std::string> get_from_repo_ids() const;

    /// Limit available packages to specified repositories.
    ///
    /// Empty by default.
    void set_to_repo_ids(std::vector<std::string> to_repo_ids);
    std::vector<std::string> get_to_repo_ids() const;

    /// Limit available packages to those with specified vendors.
    /// These packages will also bypass vendor change check.
    ///
    /// Empty by default.
    void set_to_vendors(std::vector<std::string> vendors);
    const std::vector<std::string> & get_to_vendors() const;

    /// If set to true, after resolving serialized, reverted or redo transactions don't check for
    /// extra packages pulled into the transaction.
    ///
    /// Default: false
    void set_ignore_extras(bool ignore_extras);
    bool get_ignore_extras() const;

    /// If set to true, after resolving serialized, reverted or redo transactions don't check for
    /// installed packages matching those in the transactions.
    ///
    /// Default: false
    void set_ignore_installed(bool ignore_installed);
    bool get_ignore_installed() const;

    /// If set to true, after resolving serialized, reverted or redo transactions override reasons
    /// of already installed packages.
    /// This option only has an effect if ignore_installed is set otherwise the transaction fails
    /// when it contains already installed packages.
    ///
    /// Default: false
    void set_override_reasons(bool override_reasons);
    bool get_override_reasons() const;

private:
    friend class Goal;

    // TODO(lukash) fix the documentation of the methods below, "resolve FOO and store
    // the result" doesn't really describe what is actually going on

    /// Resolve skip_broken value and store the result as the value used.
    ///
    /// @param cfg_main Main config used to resolve GoalSetting::auto
    /// @return Resolved value.
    /// @exception libdnf5::AssertionError When a different value already stored or when invalid value
    /// @since 1.0
    LIBDNF_LOCAL bool resolve_skip_broken(const libdnf5::ConfigMain & cfg_main);
    /// Resolve skip_broken value and store the result as the value used. When GoalSetting::auto it returns false
    ///
    /// @return Resolved value.
    /// @exception libdnf5::AssertionError When a different value already stored
    /// @since 1.0
    LIBDNF_LOCAL bool resolve_skip_broken();

    /// Resolve skip_unavailable value and store the result as the value used.
    ///
    /// @param cfg_main Main config used to resolve GoalSetting::auto
    /// @return Resolved value.
    /// @exception libdnf5::AssertionError When a different value already stored or when invalid value
    /// @since 1.0
    LIBDNF_LOCAL bool resolve_skip_unavailable(const libdnf5::ConfigMain & cfg_main);

    /// Resolve best value and store the result as the value used.
    ///
    /// @param cfg_main Main config used to resolve GoalSetting::auto
    /// @return Resolved value.
    /// @exception libdnf5::AssertionError When a different value already stored or when invalid value
    /// @since 1.0
    LIBDNF_LOCAL bool resolve_best(const libdnf5::ConfigMain & cfg_main);
    /// Resolve clean_requirements_on_remove value and store the result as the value used.
    ///
    /// @param cfg_main Main config used to resolve GoalSetting::auto
    /// @return Resolved value.
    /// @exception libdnf5::AssertionError When a different value already stored or when invalid value
    /// @since 1.0
    LIBDNF_LOCAL bool resolve_clean_requirements_on_remove(const libdnf5::ConfigMain & cfg_main);
    /// Resolve clean_requirements_on_remove value and store the result as the value used.
    ///
    /// @return Resolved value.
    /// @exception libdnf5::AssertionError When a different value already stored or when invalid value
    /// @since 1.0
    LIBDNF_LOCAL bool resolve_clean_requirements_on_remove();

    /// Compute and store effective group_package_types value. Used only for goal jobs operating on groups.
    /// @return group_package_types value if set, cfg_main.group_package_types value otherwise.
    /// @exception libdnf5::AssertionError When a different value already stored or when invalid value
    LIBDNF_LOCAL libdnf5::comps::PackageType resolve_group_package_types(const libdnf5::ConfigMain & cfg_main);

    class LIBDNF_LOCAL Impl;
    std::unique_ptr<Impl> p_impl;
};


inline GoalProblem operator|(GoalProblem lhs, GoalProblem rhs) {
    return static_cast<GoalProblem>(
        static_cast<std::underlying_type<GoalProblem>::type>(lhs) |
        static_cast<std::underlying_type<GoalProblem>::type>(rhs));
}

inline GoalProblem operator|=(GoalProblem & lhs, GoalProblem rhs) {
    lhs = static_cast<GoalProblem>(
        static_cast<std::underlying_type<GoalProblem>::type>(lhs) |
        static_cast<std::underlying_type<GoalProblem>::type>(rhs));
    return lhs;
}

inline GoalProblem operator&(GoalProblem lhs, GoalProblem rhs) {
    return static_cast<GoalProblem>(
        static_cast<std::underlying_type<GoalProblem>::type>(lhs) &
        static_cast<std::underlying_type<GoalProblem>::type>(rhs));
}


}  // namespace libdnf5


#endif  // LIBDNF5_BASE_GOAL_ELEMENTS_HPP