#pragma once

#include "repo_fwd.h"

#include <git2/types.h>

#include <memory>

struct git_commit;
struct git_oid;
struct git_repository;

namespace git
{
    struct Tree;

    struct Commit
    {
        size_t parents_num() const;
        Commit parent(size_t i) const;
        git_oid const & parent_id(size_t i) const;

        Tree tree() const;

        explicit operator bool() const { return commit_ != nullptr; }

        git_oid const & id() const;
        git_oid const & tree_id() const;

        git_signature const * author() const;
        git_signature const * commiter() const;

        const char * message() const;
        const char * summary() const;
        git_time_t time() const;

        git_oid merge_base(size_t p1, size_t p2) const;

        Repository const & repo() const { return *repo_; }

        Commit(git_commit *, Repository const &);
        Commit() = default;

    private:
        friend struct Repository;

        git_commit const * ptr() const { return commit_.get(); }

    private:
        struct Destroy { void operator() (git_commit*) const; };
        std::unique_ptr<git_commit, Destroy> commit_;
        Repository const * repo_ = nullptr;
    };
}