//
//  WriteCsvFile.swift
//  Meshtastic
//
//  Copyright(c) Garth Vander Houwen 7/15/22.
//

import SwiftUI

func TelemetryToCsvFile(telemetry: [TelemetryEntity], metricsType: Int) -> String {
	var csvString: String = ""
	let localeDateFormat = DateFormatter.dateFormat(fromTemplate: "yyMMddjmma", options: 0, locale: Locale.current)
	let dateFormatString = (localeDateFormat ?? "MM/dd/YY j:mma").replacingOccurrences(of: ",", with: "")
	if metricsType == 0 {
		// Create Device Metrics Header
		csvString = "\(NSLocalizedString("battery.level", comment: "")), \(NSLocalizedString("voltage", comment: "")), \(NSLocalizedString("channel.utilization", comment: "")), \(NSLocalizedString("airtime", comment: "")), \(NSLocalizedString("timestamp", comment: ""))"
		for dm in telemetry{
			if dm.metricsType == 0 {
				csvString += "\n"
				csvString += String(dm.batteryLevel)
				csvString += ", "
				csvString += String(dm.voltage)
				csvString += ", "
				csvString += String(dm.channelUtilization)
				csvString += ", "
				csvString += String(dm.airUtilTx)
				csvString += ", "
				csvString += dm.time?.formattedDate(format: dateFormatString) ?? NSLocalizedString("unknown.age", comment: "")
			}
		}
	} else if metricsType == 1 {
		// Create Environment Telemetry Header
		csvString = "Temperature, Relative Humidity, Barometric Pressure, Gas Resistance, \(NSLocalizedString("voltage", comment: "")), \(NSLocalizedString("current", comment: "")), \(NSLocalizedString("timestamp", comment: ""))"
		for dm in telemetry{
			if dm.metricsType == 1 {
				csvString += "\n"
				csvString += String(dm.temperature.localeTemperature())
				csvString += ", "
				csvString += String(dm.relativeHumidity)
				csvString += ", "
				csvString += String(dm.barometricPressure)
				csvString += ", "
				csvString += String(dm.gasResistance)
				csvString += ", "
				csvString += String(dm.voltage)
				csvString += ", "
				csvString += String(dm.current)
				csvString += ", "
				csvString += dm.time?.formattedDate(format: dateFormatString) ?? NSLocalizedString("unknown.age", comment: "")
			}
		}
	}
	return csvString
}

func PositionToCsvFile(positions: [PositionEntity]) -> String {
	var csvString: String = ""
	let localeDateFormat = DateFormatter.dateFormat(fromTemplate: "yyMMddjmma", options: 0, locale: Locale.current)
	let dateFormatString = (localeDateFormat ?? "MM/dd/YY j:mma").replacingOccurrences(of: ",", with: "")
	// Create Position Header
	csvString = "SeqNo, Latitude, Longitude, Altitude, Sats, Speed, Heading, SNR, \(NSLocalizedString("timestamp", comment: ""))"
	for pos in positions {
		csvString += "\n"
		csvString += String(pos.seqNo)
		csvString += ", "
		csvString += String((pos.latitude ?? 0))
		csvString += ", "
		csvString += String(pos.longitude ?? 0)
		csvString += ", "
		csvString += String(pos.altitude)
		csvString += ", "
		csvString += String(pos.satsInView)
		csvString += ", "
		csvString += String(pos.speed)
		csvString += ", "
		csvString += String(pos.heading)
		csvString += ", "
		csvString += String(pos.snr)
		csvString += ", "
		csvString += pos.time?.formattedDate(format: dateFormatString) ?? NSLocalizedString("unknown.age", comment: "")
	}
	return csvString
}