import UIKit
import Foundation

// Definisco gli utenti
struct User {
    var name: String
    var surname: String
    var email: String
    var password: String
}
// Ne creo una loro collezione
var userList: [User] = []
// Creo una funzione che aggiunge nuovi utenti alla lista se non già registrati
func register(name: String, surname: String, email: String, password: String) {
    for user in userList {
        if user.email == email {
            print("Email already registered!")
            return
        }
    }
    let thisUser = User(name: name, surname: surname, email: email, password: password)
    userList.append(thisUser)
    print("Registration completed!")
}
// Creo una funzione per fare il login
func login(email: String, password: String) {
    for user in userList {
        if user.email == email {
            if user.password == password {
                print("Login successful!")
                return
            } else {
                print("Wrong password!")
                return
            }
        }
    }
    print("User not registered!")
}
// Definisco i turni per gli uffici (time è di tipo "hh:mm")
struct turn {
    var time: String
    var isBooked: Bool
    var queueType: String
}
// Definisco gli uffici
struct Office {
    var ID: Int
    var name: String
    var address: String
    var coordinates: (Float, Float)
    var timeTable: [turn]
    // var notes: String?
}
// Ne creo una loro collezione
var officeList: [Office] = []
// Creo una funzione che crea un nuovo ufficio e lo aggiunge alla lista
func addOffice(name: String, address: String, coordinates: (Float, Float), turns: [String]) {
    // Assegna un ID sempre maggiore a seconda di quanti uffici son già registrati
    var ID: Int
    if officeList.isEmpty {
        ID = 1
    } else {
        ID = (officeList.last?.ID)! + 1
    }
    var timeTable: [turn] = []
    for element in turns {
        let thisTurn = turn(time: element, isBooked: false, queueType: "")
        timeTable.append(thisTurn)
    }
    let thisOffice = Office(ID: ID, name: name, address: address, coordinates: coordinates, timeTable: timeTable)
    officeList.append(thisOffice)
}
// Creo una funzione che controlla la disponibilità di un turno in un ufficio
func checkTurn(ID: Int, time: String) {
    for office in officeList {
        if office.ID == ID {
            for turn in office.timeTable {
                if turn.time == time {
                    if turn.isBooked == false {
                        print("This turn is available for booking!")
                        return
                    } else {
                        print("This turn has already been booked for \(turn.queueType)!")
                        return
                    }
                }
            }
            print("Wrong time format (not hh:mm) or this turn for that office does not exist!")
            return
        }
    }
    print("Office not found!")
}
// Creo la funzione che prenota il turno in un ufficio
func bookTurn (ID: Int, time: String, queueType: String) {
    for office in officeList {
        if office.ID == ID {
            for turn in office.timeTable {
                if turn.time == time {
                    if turn.isBooked == false {
                        //turn.isBooked = true
                        //turn.queueType = queueType
                        print("This turn has been successfully booked for \(queueType)!")
                        return
                    } else {
                        print("This turn has already been booked!")
                        return
                    }
                }
            }
            print("Wrong time format (not hh:mm) or this turn for that office does not exist!")
            return
        }
    }
    print("Office not found!")
}


register(name: "Mattia", surname: "Fonisto", email: "m.fonisto@gmail.com", password: "mammt")
register(name: "Federica", surname: "Fonisto", email: "federìca.fonisto@gmail.com", password: "patt")
login(email: "m.fonisto@gmail.com", password: "mammt")
login(email: "m.fonisto@gmail.com", password: "patt")
login(email: "mario.fonisto@gmail.com", password: "nonnt")
addOffice(name: "Poste", address: "Via Mammt", coordinates: (1.000, 1.000), turns: ["08:00", "08:30", "09:00"])
addOffice(name: "Banca", address: "Via Patt", coordinates: (2.000, 2.000), turns: ["15:00", "15:30", "16:00"])
checkTurn(ID: 1, time: "08:00")
checkTurn(ID: 10, time: "08:00")
checkTurn(ID: 1, time: "Turno che non esiste")
bookTurn(ID: 2, time: "15:00", queueType: "withdrawal")
checkTurn(ID: 2, time: "15:00")