// +build ignore
package main

import (
	"C"
	"io"

	"gopkg.in/src-d/go-git.v3"
	"gopkg.in/src-d/go-git.v3/core"
)

//export c_Commit_get_Hash
func c_Commit_get_Hash(c uint64) *C.char {
	obj, ok := GetObject(Handle(c))
	if !ok {
		return nil
	}
	commit := obj.(*git.Commit)
	return C.CString(string(commit.Hash[:]))
}

//export c_Commit_get_Author
func c_Commit_get_Author(c uint64) uint64 {
	obj, ok := GetObject(Handle(c))
	if !ok {
		return IH
	}
	commit := obj.(*git.Commit)
	author := &commit.Author
	author_handle := RegisterObject(author)
	return uint64(author_handle)
}

//export c_Commit_get_Committer
func c_Commit_get_Committer(c uint64) uint64 {
	obj, ok := GetObject(Handle(c))
	if !ok {
		return IH
	}
	commit := obj.(*git.Commit)
	committer := &commit.Committer
	committer_handle := RegisterObject(committer)
	return uint64(committer_handle)
}

//export c_Commit_get_Message
func c_Commit_get_Message(c uint64) *C.char {
	obj, ok := GetObject(Handle(c))
	if !ok {
		return nil
	}
	commit := obj.(*git.Commit)
	return C.CString(commit.Message)
}

//export c_Commit_Tree
func c_Commit_Tree(c uint64) uint64 {
	obj, ok := GetObject(Handle(c))
	if !ok {
		return IH
	}
	commit := obj.(*git.Commit)
	tree := commit.Tree()
	tree_handle := RegisterObject(tree)
	return uint64(tree_handle)
}

//export c_Commit_Parents
func c_Commit_Parents(c uint64) uint64 {
	obj, ok := GetObject(Handle(c))
	if !ok {
		return IH
	}
	commit := obj.(*git.Commit)
	parents := commit.Parents()
	parents_handle := RegisterObject(parents)
	return uint64(parents_handle)
}

//export c_Commit_NumParents
func c_Commit_NumParents(c uint64) int {
	obj, ok := GetObject(Handle(c))
	if !ok {
		return -1
	}
	commit := obj.(*git.Commit)
	return commit.NumParents()
}

//export c_Commit_File
func c_Commit_File(c uint64, path string) (uint64, int, *C.char) {
	obj, ok := GetObject(Handle(c))
	if !ok {
		return IH, ErrorCodeNotFound, C.CString(MessageNotFound)
	}
	commit := obj.(*git.Commit)
	file, err := commit.File(CopyString(path))
	if err != nil {
		return IH, ErrorCodeInternal, C.CString(err.Error())
	}
	file_handle := RegisterObject(file)
	return uint64(file_handle), ErrorCodeSuccess, nil
}

//export c_Commit_ID
func c_Commit_ID(c uint64) *C.char {
	return c_Commit_get_Hash(c)
}

//export c_Commit_Type
func c_Commit_Type(c uint64) int8 {
	obj, ok := GetObject(Handle(c))
	if !ok {
		return -1
	}
	commit := obj.(*git.Commit)
	return int8(commit.Type())
}

//export c_Commit_Decode
func c_Commit_Decode(o uint64) (uint64, int, *C.char) {
	commit := git.Commit{}
	obj, ok := GetObject(Handle(o))
	if !ok {
		return IH, ErrorCodeNotFound, C.CString(MessageNotFound)
	}
	cobj := obj.(*core.Object)
	err := commit.Decode(*cobj)
	if err != nil {
		return IH, ErrorCodeInternal, C.CString(err.Error())
	}
	return uint64(RegisterObject(&commit)), ErrorCodeSuccess, nil
}

//export c_Commit_String
func c_Commit_String(c uint64) *C.char {
	obj, ok := GetObject(Handle(c))
	if !ok {
		return nil
	}
	commit := obj.(*git.Commit)
	return C.CString(commit.String())
}

//export c_NewCommitIter
func c_NewCommitIter(r uint64, iter uint64) uint64 {
	obj, ok := GetObject(Handle(r))
	if !ok {
		return IH
	}
	repo := obj.(*git.Repository)
	obj, ok = GetObject(Handle(iter))
	if !ok {
		return IH
	}
	obj_iter := obj.(*core.ObjectIter)
	commit_iter := git.NewCommitIter(repo, *obj_iter)
	handle := RegisterObject(commit_iter)
	return uint64(handle)
}

//export c_CommitIter_Next
func c_CommitIter_Next(iter uint64) (uint64, int, *C.char) {
	obj, ok := GetObject(Handle(iter))
	if !ok {
		return IH, ErrorCodeNotFound, C.CString(MessageNotFound)
	}
	commitIter := obj.(*git.CommitIter)
	commit, err := commitIter.Next()
	if err != nil {
		if err == io.EOF {
			return IH, ErrorCodeSuccess, nil
		}
		return IH, ErrorCodeInternal, C.CString(err.Error())
	}
	handle := RegisterObject(commit)
	return uint64(handle), ErrorCodeSuccess, nil
}