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GerenciaDisciplinas.swift
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GerenciaDisciplinas.swift
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//
// GerenciaDisciplinas.swift
// projetoGrade
//
// Created by Mateus Nobre Ferreira on 30/03/20.
// Copyright © 2020 Mateus Nobre Ferreira. All rights reserved.
//
import Foundation
enum WeekDay {
case monday
case tuesday
case wednesday
case thursday
case friday
case saturday
}
//Structs necessarias
struct ClassHour {
var startHour: Float
var endHour: Float
var weekDay: WeekDay
}
struct Discipline {
let name: String
let id: String
let horarios: [ClassHour]
let creditos: Int
let semestre: Int
let preReq: [String]
}
//Classe responsavel por gerenciar a as disciplinas e grade de disciplinas
class GerenciaDisciplinas {
var todasDisciplinas:[String: Discipline] = [:]
private var disciplinasFeitas:[String: Discipline] = [:]
private var disciplinasGradeSalva:[Discipline] = []
private(set) var disciplinasPossiveis:[Discipline] = []
static let instance = GerenciaDisciplinas()
//Pedaco do codigo necessario para tornar a classe Singleton
//--------------------------------------------
class var sharedInstance: GerenciaDisciplinas {
return GerenciaDisciplinas.instance
}
private init(){}
//---------------------------------------------
//Metodo utilizado para chamar os metodos para tratar CSV e para preeencher algumas propriedades da classe
func start(todasFilePath:String, feitasFilePath:String){
self.csvToDisciplinas(filePath:todasFilePath)
self.csvToDisciplinasFeitas(filePath: feitasFilePath)
self.disciplinasPossiveis = self.preencheDisciplinasPossiveis()
}
//Metodo para acessar e tratar os dados do CSV com todas as disciplinas
private func csvToDisciplinasFeitas(filePath: String){
let fileURL: URL = URL(fileURLWithPath: filePath)
do{
let stringFromFile: String = try String(contentsOf: fileURL)
let feitasId:[String] = stringFromFile.split(separator: "\r\n").map{ String($0) }
for disc in feitasId {
disciplinasFeitas[disc] = todasDisciplinas[disc]!
}
}catch {
print(error.localizedDescription)
return
}
}
//Metodo para acessar e tratar dados de um csv com os ID`s das disciplinas ja feitas
private func csvToDisciplinas(filePath: String){
let fileURL: URL = URL(fileURLWithPath: filePath)
do {
let stringFromFile: String = try String(contentsOf: fileURL)
let linesString = stringFromFile.split(separator: "\r\n")
var firstLine:String?
for line in linesString {
guard firstLine != nil else {
firstLine = String(line)
continue
}
//Create Discipline from File
let infoLine = line.split(separator: ",")
let preReqString:[String] = infoLine.count > 5 ? infoLine[5].split(separator: ";").map{String($0)} : []
var horarios:[ClassHour] = []
let discHorariosString = infoLine[2].split(separator: ";")
for horarioString in discHorariosString {
let horarioInfo = horarioString.split(separator: ":")
let horasString = horarioInfo[1].split(separator: "-")
let horas = horasString.map{ Float($0)! }
var day: WeekDay?
switch horarioInfo[0] {
case "mon":
day = .monday
case "tue":
day = .tuesday
case "wed":
day = .wednesday
case "thu":
day = .thursday
case "fri":
day = .friday
case "sat":
day = .saturday
default:
break
}
let horario = ClassHour(startHour: horas[0], endHour: horas[1], weekDay: day!)
horarios.append(horario)
}
todasDisciplinas[String(infoLine[0])] =
Discipline(name: String(infoLine[1]), id: String(infoLine[0]), horarios: horarios, creditos: Int(String(infoLine[3]))!, semestre: Int(String(infoLine[4]))!, preReq: preReqString)
}
return
} catch {
print(error.localizedDescription)
return
}
}
//Metodo que retorna array de disciplinas possiveis de acordo com as disciplinas ja feitas, choques de horario e pre-requisitos
private func preencheDisciplinasPossiveis()->[Discipline]{
var disciplinasPossiveis:[Discipline] = []
itDiscs: for (key, disciplina) in self.todasDisciplinas{
guard disciplinasFeitas[key] == nil else {
continue
}
for preReqKey in disciplina.preReq{
guard disciplinasFeitas[preReqKey] != nil else {
continue itDiscs
}
}
for discSalva in self.disciplinasGradeSalva {
guard !self.chocaHorarios(discSalva, disciplina) else {
continue itDiscs
}
}
disciplinasPossiveis.append(disciplina)
}
return disciplinasPossiveis
}
//Metodo para printar todas as disciplinas
public func getTodasDisciplinas() {
print("Todas as Disciplinas:\n")
for i in todasDisciplinas {
print("Disciplina: \(i.value.name)\nID: \(i.value.id) | Créditos: \(i.value.creditos)\n")
}
}
//Metodo para printar as disciplinas possiveis de serem feitas, de acordo com horarios e pre-requisitos
public func printDisciplinasPossiveis() {
print("Disciplinas Possiveis:\n")
for i in preencheDisciplinasPossiveis() {
print("Disciplina: \(i.name)\nID: \(i.id) | Créditos: \(i.creditos) | Semestre: \(i.semestre) \n")
}
}
//Metodo para printar um array de Disciplinas
func printArrayDisciplinas(_ discs:[Discipline]){
for i in discs {
print("Disciplina: \(i.name)\nID: \(i.id) | Créditos: \(i.creditos) | Semestre: \(i.semestre) \n")
}
}
//Metodo para printar disciplinas que foram feitas
public func getDisciplinasFeitas() {
print("Disciplinas feitas:\n")
for i in disciplinasFeitas {
//print("Disciplina: \(i.value.name)")
print("Disciplina: \(i.value.name)\nID: \(i.value.id) | Créditos: \(i.value.creditos)\n")
}
}
//Retorna array com disciplinas salvas na Grade
public func getDisciplinasGradeSalva() -> [Discipline] {
return disciplinasGradeSalva
}
//Metodo que recebe um array de ID`s de disciplinas e, se possivel, as adiciona a Grade de Horario
func adicionaDisciplinasGradeSalva(disciplinasID: [String]) -> [Bool] {
var deuCerto:[Bool] = []
for disciplinaID in disciplinasID {
if todasDisciplinas[disciplinaID] != nil {
var possivel: Bool = true
disciplinasGradeSalva.forEach {
if chocaHorarios($0, todasDisciplinas[disciplinaID]!){
possivel = false
}
}
let filt = self.preencheDisciplinasPossiveis().filter{$0.id == disciplinaID}
if(filt.count == 0){ possivel = false }
if possivel {
deuCerto.append(true)
disciplinasGradeSalva.append(todasDisciplinas[disciplinaID]!)
}else{
deuCerto.append(false)
}
} else{
deuCerto.append(false)
}
}
return deuCerto
}
//Metodo que recebe um array de ID`s de disciplians e, se possivel, as remove da Grade de Horarios
func removeDisciplinaGradeSalva(disciplinasID: [String]) -> [Bool] {
print(disciplinasID)
var deuCerto:[Bool] = []
for disciplinaID in disciplinasID {
if todasDisciplinas[disciplinaID] != nil {
var temp = false
for (i, disc) in disciplinasGradeSalva.enumerated(){
if disc.id == disciplinaID {
disciplinasGradeSalva.remove(at: i)
temp = true
}
}
deuCerto.append(temp)
}else {
deuCerto.append(false)
}
}
return deuCerto
}
//Metodo para verificar se duas disciplinas tem dois horarios que se chocam
func chocaHorarios(_ disciplina1: Discipline, _ disciplina2: Discipline) -> Bool {
var chocouHorario: Bool = false
for aula1 in disciplina1.horarios {
for aula2 in disciplina2.horarios {
if ( aula2.startHour >= aula1.startHour && aula2.startHour < aula1.endHour ) && (aula1.weekDay == aula2.weekDay) {
chocouHorario = true
}
}
}
return chocouHorario
}
//Metodo recursivo para gerar o melhor semestre possivel
func melhorSemestre(discsPossiveis:[Discipline]) -> [Discipline] {
var arrayResposta:[Discipline]?
guard discsPossiveis.count != 0 else {
return []
}
for disciplina:Discipline in discsPossiveis{
var possiveisComDiscAtual: [Discipline] = []
discsPossiveis.forEach{
if(!self.chocaHorarios($0, disciplina)){
possiveisComDiscAtual.append($0)
}
}
var tempArray:[Discipline] = melhorSemestre(discsPossiveis: possiveisComDiscAtual)
tempArray.append(disciplina)
guard arrayResposta != nil else{
arrayResposta = tempArray
continue
}
if self.avaliaEMelhor(atual: arrayResposta!, novo: tempArray){
arrayResposta = tempArray
}
}
return arrayResposta!
}
//Metodo para avaliar se um subconjunto solucao é melhor que outro
private func avaliaEMelhor(atual:[Discipline], novo: [Discipline])->Bool{
var creditosAtual = 0, creditosNovo = 0, somaSemestreAtual = 0, somaSemestreNovo=0
atual.forEach{
creditosAtual+=$0.creditos
somaSemestreAtual+=$0.semestre
}
novo.forEach{
creditosNovo+=$0.creditos
somaSemestreNovo+=$0.semestre
}
if creditosNovo>creditosAtual {
return true
}else if creditosNovo == creditosAtual && somaSemestreNovo < somaSemestreAtual {
return true
}
return false
}
//Metodo para printar a grade horario na tela
func printGrade() {
let disciplinas = disciplinasGradeSalva
let semana = [
WeekDay.monday : disciplinas.filter {$0.horarios.filter{$0.weekDay == WeekDay.monday}.count > 0},
WeekDay.tuesday : disciplinas.filter {$0.horarios.filter{$0.weekDay == WeekDay.tuesday}.count > 0} ,
WeekDay.wednesday : disciplinas.filter {$0.horarios.filter{$0.weekDay == WeekDay.wednesday}.count > 0} ,
WeekDay.thursday : disciplinas.filter {$0.horarios.filter{$0.weekDay == WeekDay.thursday}.count > 0} ,
WeekDay.friday : disciplinas.filter {$0.horarios.filter{$0.weekDay == WeekDay.friday}.count > 0} ,
WeekDay.saturday : disciplinas.filter {$0.horarios.filter{$0.weekDay == WeekDay.saturday}.count > 0}
]
let orderWeek = [WeekDay.monday, WeekDay.tuesday, WeekDay.wednesday, WeekDay.thursday, WeekDay.friday, WeekDay.saturday]
print("\nGRADE DE HORARIOS SALVA: \n")
for key in orderWeek {
var discsTuplas = semana[key]!.map { ($0.name, $0.horarios.filter{$0.weekDay == key}[0]) }
discsTuplas.sort{ $0.1.startHour < $1.1.startHour }
print("\(weekDaytoString(key)): ")
discsTuplas.forEach{
print("\($0.1.startHour) - \($0.1.endHour): \($0.0) ")
}
print()
}
}
//Metodo para retornar uma string de acordo com o WeekDay passado
private func weekDaytoString(_ weekDay:WeekDay)->String{
switch weekDay {
case .monday:
return "Segunda"
case .tuesday:
return "Terça"
case .wednesday:
return "Quarta"
case .thursday:
return "Quinta"
case .friday:
return "Sexta"
case .saturday:
return "Sábado"
}
}
}