header.go

package main

import "time"

type Header struct {
	Version                            uint32
	Filesize                           uint32
	CRC32                              uint32
	Timestamp                          uint32
	CountryCode                        uint8
	PublicityFlag                      uint8
	QuestionVersion                    uint8
	ResultVersion                      uint8
	NumberOfNationalQuestions          uint8
	NationalQuestionTableOffset        uint32
	NumberOfWorldWideQuestions         uint8
	WorldWideQuestionTableOffset       uint32
	NumberOfQuestions                  uint8
	QuestionTextInfoTableOffset        uint32
	NumberOfNationalResults            uint8
	NationalResultTableOffset          uint32
	NumberOfDetailedNationalResults    uint16
	DetailedNationalResultTableOffset  uint32
	NumberOfPositionTables             uint16
	PositionTableOffset                uint32
	NumberOfWorldWideResults           uint8
	WorldWideResultsTableOffset        uint32
	NumberOfDetailedWorldWideResults   uint16
	DetailedWorldWideResultTableOffset uint32
	NumberOfCountries                  uint16
	CountryTableOffset                 uint32
}

func (v *Votes) MakeHeader() {
	questionVersion := 1
	resultVersion := 0
	if fileType == Results {
		questionVersion = 0
		resultVersion = 1
	}

	v.Header = Header{
		Version:                            0,
		Filesize:                           0,
		CRC32:                              0,
		Timestamp:                          GenerateCurrentTimestamp(),
		CountryCode:                        v.currentCountryCode,
		PublicityFlag:                      0,
		QuestionVersion:                    uint8(questionVersion),
		ResultVersion:                      uint8(resultVersion),
		NumberOfNationalQuestions:          0,
		NationalQuestionTableOffset:        0,
		NumberOfWorldWideQuestions:         0,
		WorldWideQuestionTableOffset:       0,
		NumberOfQuestions:                  0,
		QuestionTextInfoTableOffset:        0,
		NumberOfNationalResults:            0,
		NationalResultTableOffset:          0,
		NumberOfDetailedNationalResults:    0,
		DetailedNationalResultTableOffset:  0,
		NumberOfPositionTables:             0,
		PositionTableOffset:                0,
		NumberOfWorldWideResults:           0,
		WorldWideResultsTableOffset:        0,
		NumberOfDetailedWorldWideResults:   0,
		DetailedWorldWideResultTableOffset: 0,
		NumberOfCountries:                  0,
		CountryTableOffset:                 0,
	}
}

func GenerateCurrentTimestamp() uint32 {
	return CreateTimestamp(int(time.Now().Unix()))
}

func CreateTimestamp(time int) uint32 {
	return uint32((time - 946684800) / 60)
}