package com.flightfeather.obd.socket.decoder.impl
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import com.flightfeather.obd.socket.bean.DataUnit
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import com.flightfeather.obd.socket.decoder.DataPackageDecoder
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import com.flightfeather.obd.socket.decoder.DataUnitDecoder
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import com.flightfeather.obd.socket.eunm.ObdCommandUnit
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/**
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* @author riku
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* Date: 2019/9/12
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*/
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class DataPackageDecoderImpl : DataPackageDecoder {
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private val dataUnitDecoder: DataUnitDecoder = DataUnitDecoderImpl()
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// 接收到的字符串是byte转码前的，其就表示字符的ASCII码；
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override fun getHead(b: List<String>): String? {
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return if (b.size >= 2) {
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"${b[0]}${b[1]}"
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} else {
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null
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}
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}
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override fun getCommandUnit(b: List<String>): Int? = if (b.size >= 3) {
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b[2].toIntOrNull(16)
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} else {
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null
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}
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override fun getVinCode(b: List<String>): String? {
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if (b.size < 20) return null
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//fixme 应该是需要将b当作ASCII码，再获取转换后的字符串
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val s = StringBuilder()
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for (i in 3..19) {
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s.append(b[i].toIntOrNull(16)?.toChar())
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}
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return s.toString()
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}
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override fun getSoftwareVersion(b: List<String>): Int? = if (b.size >= 21) {
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b[20].toIntOrNull(16)
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} else {
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null
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}
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override fun getEncryptionWay(b: List<String>): Int? = if (b.size >= 21) {
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b[21].toIntOrNull(16)
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} else {
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null
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}
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override fun getDataLength(b: List<String>): Int {
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if (b.size < 24) return 0
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val hexNum = "${b[22]}${b[23]}"
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return hexNum.toIntOrNull(16) ?: 0
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}
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override fun getDataUnit(b: List<String>): List<DataUnit> {
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if (getDataLength(b) == 0 || b.size < 26) {
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return emptyList()
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}
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val unit = mutableListOf<String>()
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for (i in 24..b.size - 2) {
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unit.add(b[i])
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}
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dataUnitDecoder.run {
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return when (getCommandUnit(b)) {
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ObdCommandUnit.CarRegister.value -> getCarRegisterData(unit)
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ObdCommandUnit.RealTimeData.value -> getRealTimeData(unit)
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ObdCommandUnit.ReplacementData.value -> getReplacementData(unit)
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ObdCommandUnit.CarLogOut.value -> getCarLogOutData(unit)
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ObdCommandUnit.TimeCalibration.value -> getTimeCalibrationData(unit)
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else -> emptyList()
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}
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}
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}
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override fun getCheckCode(b: List<String>): Int? {
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return if (b.isNotEmpty()) {
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b[b.size - 1].toIntOrNull(16)
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} else {
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null
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}
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}
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override fun toStringList(msg: String): List<String> {
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return msg.split(" ")
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}
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}
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