#include "git2cpp/commit.h"
#include "git2cpp/error.h"
#include "git2cpp/repo.h"
#include "git2cpp/tree.h"

#include <git2/commit.h>

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

    void Commit::Destroy::operator()(git_commit* commit) const {
        git_commit_free(commit);
    }

    Commit Commit::parent(size_t i) const
    {
        git_commit * parent;
        if (git_commit_parent(&parent, ptr(), static_cast<unsigned int>(i)))
            throw commit_parent_error(id());
        return Commit(parent, *repo_);
    }

    Tree Commit::tree() const
    {
        git_tree * tree;
        if (git_commit_tree(&tree, ptr()))
            throw commit_tree_error(id());
        return Tree(tree, *repo_);
    }

    size_t Commit::parents_num() const
    {
        return git_commit_parentcount(ptr());
    }

    git_oid const & Commit::id() const
    {
        return *git_commit_id(ptr());
    }

    git_oid const & Commit::tree_id() const
    {
        return *git_commit_tree_id(ptr());
    }

    git_oid const & Commit::parent_id(size_t i) const
    {
        return *git_commit_parent_id(ptr(), static_cast<unsigned int>(i));
    }

    git_signature const * Commit::author() const
    {
        return git_commit_author(ptr());
    }

    git_signature const * Commit::commiter() const
    {
        return git_commit_committer(ptr());
    }

    const char * Commit::message() const
    {
        return git_commit_message(ptr());
    }

    const char * Commit::summary() const
    {
        return git_commit_summary(commit_.get());
    }

    git_time_t Commit::time() const
    {
        return git_commit_time(ptr());
    }

    git_oid Commit::merge_base(size_t p1, size_t p2) const
    {
        return repo_->merge_base(parent_id(p1), parent_id(p2));
    }
}