#pragma once

#include "tree.h"

struct git_commit;
struct git_oid;
struct git_repository;

namespace git
{
   struct Repository;

   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;

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

      explicit operator bool () const { return commit_; }

      git_oid const & 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;

      Commit(git_commit * commit, Repository const & repo)
         : commit_(commit)
         , repo_(&repo)
      {}

      Commit() {}

      Commit(Commit && other)
         : commit_(other.commit_)
         , repo_(other.repo_)
      {
         other.commit_ = nullptr;
      }

      Commit              (Commit const &) = delete;
      Commit& operator =  (Commit const &) = delete;

      ~Commit();

   private:
      friend struct Repository;

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

   private:
      git_commit * commit_       = nullptr;
      Repository const * repo_   = nullptr;
   };
}