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//
// DataFormat17.swift
// ADSBDecoder
//
// Created by Jacky Jack on 27/09/2026.
//
import Foundation
public class DataFormat17 {
let DataFormat=17 //0:5
var Capability=0 //5:7
public var AddressAnnounced=0 //8:31
public var TypeCode=0 //32:36
var MovementField=0//37:43
var HeadingBit=0//44
var HeadingField=0//45:51
//var CPROddEven=0//53
//var CPRlat=0//54:70
//var CPRlon=0//71:87
var ParityIntegrity=0//88-111
//all avaliable message types
public var messageIdentification:ADSBTypeCodeIndentification? = nil
public var messageAirbornPositon:ADSBTypeCodeAirbonePositon? = nil
public init(_ adsb_data: String) {
//print("Dataformat: 17!")
//print(adsb_data)
var bindata:[UInt8] = []
var startN = adsb_data.startIndex
var endN = adsb_data.index(startN, offsetBy: 1)
var count=0//start index value
while (count<adsb_data.count) {
let u8 = UInt8(adsb_data[startN...endN], radix: 16)!
//print(adsb_data[startN...endN])
bindata.append(u8)
count += 2
if (count<adsb_data.count) {
startN = adsb_data.index(startN, offsetBy: 2)
endN = adsb_data.index(startN, offsetBy: 1)
}
}
//print(bindata)
//Decode Capability
let cap = (bindata[0]>>1)&0x7
//print(String(format: "cap %02x", cap))
Capability = Int(cap)
//Decode Address Announcement
let address_ann = UInt32(bindata[1])<<16 + UInt32(bindata[2])<<8 + UInt32(bindata[3])
//print(String(format: "address %06x", address_ann))
AddressAnnounced = Int(address_ann)
//Decode Type Code
let tc_byte = bindata[4] >> 3
//print(String(format: "tc %02d", tc_byte))
TypeCode = Int(tc_byte)
//aircraft indentification and category
if (tc_byte == 4) {
let msg = ADSBTypeCodeIndentification(bindata[4...10])
if decoder_debug_mode {
print("=====ADSB MESSSGE 04 =======")
print(msg)
print("============================")
}
messageIdentification = msg
//airborn position
} else if ((tc_byte >= 8) && (tc_byte <= 18)) {
let msg = ADSBTypeCodeAirbonePositon(bindata[4...10])
if decoder_debug_mode {
print(String(format:"=====ADSB MESSSGE %02d ======= AA:%04d", tc_byte, AddressAnnounced))
print(msg)
print("============================")
}
messageAirbornPositon = msg
//airborn velocity
} else if (tc_byte == 19) {
if decoder_debug_mode {
print("=====ADSB MESSSGE 19 =======")
print("=====VELOCITY =======")
}
} else {
if decoder_debug_mode {
print("=====ADSB MESSSGE UNKNOWN =======")
}
}
}
}
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