package parser

import (
	"errors"
	"regexp"
	"strings"
)

const (
	FlopRegex        = `(?m)\((?P<type>\w{3}).*(.|\n|\r).*\)`
	DestinationRegex = `(?P<dest>[A-Z]+)(?P<time>\d{0,4})`
	DofValueRex      = `(?m)DOF\/(?P<time>\d{6})`
	TypeArrival      = "ARR"
	TypeDeparture    = "DEP"
	TypeFlightPlan   = "FPL"
	TypeDelay        = "DLA"

	DepRegex   = `(?P<dep>\w+\d{0,4})`
	ArrRegex   = `(?P<arr>\w+\d{0,4})`
	PlaneRegex = `(?P<plane>\w+\d+\/?\w\d+)`
	DofRegex   = `(?P<dof>DOF\/\d{6})`
	KeyPlane   = "plane"

	CompositeDepArr = `(?m)\(` + `\w{3}` + "-" + PlaneRegex + "-" + DepRegex + "-" + ArrRegex + "-?" + DofRegex + `?\)`

	KeyDeparture = "dep"
	KeyArrival   = "arr"
	KeyDof       = "dof"
)

var flopRegex = regexp.MustCompile(FlopRegex)

func parseArrOrDep(telegram *Telegram, data string) {
	/**
	 * example:
	 * (ARR-CSN3126/A5040-ZSPD-ZBTJ1601)
	 * (DEP-CSN3125/A4553-ZGHA0554-ZBTJ-DOF/120820)
	 */
	fields := getFields(CompositeDepArr, data)
	if len(fields) < 1 {
		telegram.ParseErrors = append(telegram.ParseErrors, errors.New("data less than 4 "))
		telegram.Parsed = false
		return
	}

	telegram.FlightNumber, telegram.RegisterNumber = parseFlight(fields[KeyPlane])
	telegram.Departure, telegram.DepartureTime = parseAirportAndTime(fields[KeyDeparture])
	telegram.Destination, telegram.DestinationTime = parseAirportAndTime(fields[KeyArrival])
	dofValue := fields[KeyDof]
	if len(dofValue) > 0 {
		telegram.DateOfFlight = parseDof(dofValue)
	}
	telegram.Parsed = true

}

func parseFlightPlan(telegram *Telegram, data string) {
	/**
	* example:
	* (FPL-AAR997-IS
	* -B763/H-SDHIPRWZ/S
	* -RKSI0120
	* -N0473F320 NOPIK1B NOPIK G597 GONAV/N0473F320 G597 AGAVO/K0876S0980
	* G597 DONVO A326 ANRAT ANRAT2A
	* -ZBTJ0126 ZBAA
	* -EET/ZSHA0025 ZYSH0039 ZBPE0059 REG/HL7507 SEL/KRHJ OPR/AAR
	* DOF/090516 RMK/TCAS II EQUIPPED NAV/RNAV1 RNAV5 STS/CARGO)
	* NNNN
	 */
	values := getSplitValues(data)
	telegram.FlightNumber = values[1]
	telegram.Plane = values[3]
	telegram.Departure, telegram.DepartureTime = parseAirportAndTime(values[5])
	destString := strings.Split(values[7], " ")
	telegram.Destination, telegram.DestinationTime = parseAirportAndTime(destString[0])
	//parseDof(telegram, values[8])

}

func parseDelay(telegram *Telegram, data string) {
	/**
	 * sample:
	 * (DLA‐ABC123‐NZAA0145‐VTBS‐DOF/091120)
	 */
	values := getSplitValues(data)
	telegram.FlightNumber = values[1]
	telegram.Departure, telegram.DepartureTime = parseAirportAndTime(values[2])
	telegram.Destination, telegram.DestinationTime = parseAirportAndTime(values[3])
	//if len(values) == 5 {
	//	parseDof(telegram, values[4])
	//}
}