package mfer

import (
	"time"

	"github.com/davecgh/go-spew/spew"
	"google.golang.org/protobuf/proto"
)

//go:generate protoc --go_out=. --go_opt=paths=source_relative mf.proto

func newTimestampFromTime(t time.Time) *Timestamp {
	out := &Timestamp{
		Seconds: t.Unix(),
		Nanos:   int32(t.UnixNano() - (t.Unix() * 1000000000)),
	}
	return out
}

func (m *manifest) generate() error {
	if m.pbInner == nil {
		e := m.generateInner()
		if e != nil {
			return e
		}
	}
	output, err := proto.Marshal(m.pbInner)
	if err != nil {
		return err
	}
	spew.Dump(output)
	return nil
}

func (m *manifest) generateOuter(inner *MFFile) error {
	return nil
}

func (m *manifest) generateInner() error {
	m.pbInner = &MFFile{
		Version:   MFFile_ONE,
		CreatedAt: newTimestampFromTime(time.Now()),
		Files:     []*MFFilePath{},
	}

	for _, f := range m.files {
		nf := &MFFilePath{
			Path: f.path,
			// FIXME add more stuff
		}
		m.pbInner.Files = append(m.pbInner.Files, nf)
	}
	spew.Dump(m.pbInner)
	return nil
}