From a21fa2a913cf86d9ff1b3a3138b92fb073807d49 Mon Sep 17 00:00:00 2001
From: TheJoKlLa <thejoklla@gmail.com>
Date: Tue, 17 Nov 2020 23:40:33 +0100
Subject: [PATCH] Added: BFFH Simulation

---
 Borepin/Borepin/App.xaml.cs                   |   4 +
 Borepin/Borepin/Borepin.csproj                |   1 -
 Borepin/Borepin/Model/Machine.cs              |  27 +-
 Borepin/Borepin/Page/MachinePage.xaml         |  22 +-
 Borepin/Borepin/Page/MachinesPage.xaml        |   7 +-
 Borepin/Borepin/PageModel/MachinePageModel.cs | 231 ++++++++++++++++-
 .../Borepin/PageModel/MachinesPageModel.cs    |  23 +-
 Borepin/Borepin/Service/MachineService.cs     | 245 ++++++++++++++++++
 8 files changed, 522 insertions(+), 38 deletions(-)
 create mode 100644 Borepin/Borepin/Service/MachineService.cs

diff --git a/Borepin/Borepin/App.xaml.cs b/Borepin/Borepin/App.xaml.cs
index 9ae10de..a0e9e50 100644
--- a/Borepin/Borepin/App.xaml.cs
+++ b/Borepin/Borepin/App.xaml.cs
@@ -3,6 +3,7 @@ using Prism.Ioc;
 using Borepin.PageModel;
 using Borepin.Page;
 using Xamarin.Forms;
+using Borepin.Service;
 
 namespace Borepin
 {
@@ -32,6 +33,9 @@ namespace Borepin
             containerRegistry.RegisterForNavigation<MachinesPage, MachinesPageModel>();
             containerRegistry.RegisterForNavigation<SettingsPage>();
             containerRegistry.RegisterForNavigation<MachinePage, MachinePageModel>();
+
+            // Use Admin as Default
+            containerRegistry.RegisterInstance(typeof(BFFHInterface), BFFHService.Auth(BFFHService.AdminID));
         }
     }
 }
diff --git a/Borepin/Borepin/Borepin.csproj b/Borepin/Borepin/Borepin.csproj
index 3467af8..fbc0d73 100644
--- a/Borepin/Borepin/Borepin.csproj
+++ b/Borepin/Borepin/Borepin.csproj
@@ -73,6 +73,5 @@
   <ItemGroup>
     <Folder Include="Base\" />
     <Folder Include="Behaviour\" />
-    <Folder Include="Service\" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/Borepin/Borepin/Model/Machine.cs b/Borepin/Borepin/Model/Machine.cs
index 9860bc3..b4d048f 100644
--- a/Borepin/Borepin/Model/Machine.cs
+++ b/Borepin/Borepin/Model/Machine.cs
@@ -2,6 +2,16 @@
 
 namespace Borepin.Model
 {
+    public enum MachineStates
+    {
+        Free,
+        InUse,
+        ToCheck,
+        Blocked,
+        Disabled,
+        Reserved
+    }
+
     public class Machine : BindableBase
     {
         private string _ID;
@@ -11,8 +21,8 @@ namespace Borepin.Model
             set => SetProperty(ref _ID, value);
         }
 
-        private string _State;
-        public string State
+        private MachineStates _State;
+        public MachineStates State
         {
             get => _State;
             set => SetProperty(ref _State, value);
@@ -25,11 +35,20 @@ namespace Borepin.Model
             set => SetProperty(ref _Description, value);
         }
 
-        private string _User;
-        public string User
+        private User _User;
+        public User User
         {
             get => _User;
             set => SetProperty(ref _User, value);
         }
     }
+
+    public class User
+    {
+        public string ID { get; set; }
+
+        public string Name { get; set; }
+
+        public string OriginalWorkshop { get; set; }
+    }
 }
diff --git a/Borepin/Borepin/Page/MachinePage.xaml b/Borepin/Borepin/Page/MachinePage.xaml
index fd6a1c2..78a5d2b 100644
--- a/Borepin/Borepin/Page/MachinePage.xaml
+++ b/Borepin/Borepin/Page/MachinePage.xaml
@@ -1,18 +1,24 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-             x:Class="Borepin.Page.MachinePage">
+             x:Class="Borepin.Page.MachinePage"
+             Title="{Binding Machine.ID}">
     <ContentPage.Content>
         <StackLayout>
-            <Label Text="Welcome to Xamarin.Forms!"
-                VerticalOptions="CenterAndExpand" 
-                HorizontalOptions="CenterAndExpand" />
-            <Label Text="MachineID=" TextDecorations="Underline"></Label>
-            <Label Text="{Binding Machine.MachineID}"/>
-            <Label Text="Description=" TextDecorations="Underline"></Label>
+            <Label Text="MachineID" FontAttributes="Bold"></Label>
+            <Label Text="{Binding Machine.ID}"/>
+            <Label Text="Description" FontAttributes="Bold"></Label>
             <Label Text="{Binding Machine.Description}"/>
-            <Label Text="State=" TextDecorations="Underline"></Label>
+            <Label Text="State" FontAttributes="Bold"></Label>
             <Label Text="{Binding Machine.State}"/>
+
+            <Button Text="Reserve" Command="{Binding ReserveMachineCommand}" IsVisible="{Binding CanReserve}"/>
+
+            <Button Text="Use" Command="{Binding UseMachineCommand}" IsVisible="{Binding CanUse}"/>
+            <Button Text="GiveBack" Command="{Binding GiveBackMachineCommand}" IsVisible="{Binding CanGiveBack}"/>
+
+            <Button Text="Disable" Command="{Binding DisableMachineCommand}" IsVisible="{Binding IsAdmin}"/>
+            <Button Text="Block" Command="{Binding BlockMachineCommand}" IsVisible="{Binding IsAdmin}"/>
         </StackLayout>
     </ContentPage.Content>
 </ContentPage>
\ No newline at end of file
diff --git a/Borepin/Borepin/Page/MachinesPage.xaml b/Borepin/Borepin/Page/MachinesPage.xaml
index 0a07ddc..06e912b 100644
--- a/Borepin/Borepin/Page/MachinesPage.xaml
+++ b/Borepin/Borepin/Page/MachinesPage.xaml
@@ -5,13 +5,14 @@
              Title="Machines">
     <ContentPage.Content>
         <StackLayout>
-            <ListView ItemsSource="{Binding MachineList}">
+            <ListView x:Name="MachineList" ItemsSource="{Binding MachineList}">
                 <ListView.ItemTemplate>
                     <DataTemplate>
                         <ViewCell>
                             <Grid>
-                                <Label Text="{Binding ID}" FontAttributes="Bold" />
-                                <Label Grid.Column="1" Text="{Binding State}" />
+                                <Label Grid.Column="0" Text="{Binding ID, StringFormat='{0}'}" />
+                                <Label Grid.Column="1" Text="{Binding State, StringFormat='{0}'}" />
+                                <Button Grid.Column="2" Text="->" Command="{Binding BindingContext.GoToMachineCommand, Source={x:Reference MachineList}}" CommandParameter="{Binding .}"/>
                             </Grid>
                         </ViewCell>
                     </DataTemplate>
diff --git a/Borepin/Borepin/PageModel/MachinePageModel.cs b/Borepin/Borepin/PageModel/MachinePageModel.cs
index c3608da..f757edd 100644
--- a/Borepin/Borepin/PageModel/MachinePageModel.cs
+++ b/Borepin/Borepin/PageModel/MachinePageModel.cs
@@ -1,35 +1,248 @@
 using Borepin.Model;
+using Borepin.Service;
 using Prism.Mvvm;
 using Prism.Navigation;
 using System;
 using System.Collections.Generic;
 using System.Text;
+using System.Threading.Tasks;
 using System.Windows.Input;
 using Xamarin.Forms;
 
 namespace Borepin.PageModel
 {
-    public class MachinePageModel : BindableBase
+    public class MachinePageModel : BindableBase, INavigationAware
     {
         private INavigationService _NavigationService;
+        private BFFHInterface _BFFHInterface;
 
-        public MachinePageModel(string machineID, INavigationService navigationService)
+        public MachinePageModel(INavigationService navigationService, BFFHInterface bffhInterface)
         {
             _NavigationService = navigationService;
+            _BFFHInterface = bffhInterface;
 
-            Machine = new Machine()
-            {
-                ID = machineID,
-                Description = "This is a Discription",
-                User = "Test User"
-            };
+            ReserveMachineCommand = new Command(ReserveMachineCommandExecuted);
+            UseMachineCommand = new Command(UseMachineCommandExecuted);
+            GiveBackMachineCommand = new Command(GiveBackMachineCommandExecuted);
+            BlockMachineCommand = new Command(BlockMachineCommandExecuted);
+            DisableMachineCommand = new Command(DisableMachineCommandExecuted);
         }
 
         private Machine _Machine;
         public Machine Machine
         {
-            get => Machine;
+            get => _Machine;
             set => SetProperty(ref _Machine, value);
         }
+
+        private bool _IsValid = false;
+        public bool IsValid
+        {
+            get => _IsValid;
+            set => SetProperty(ref _IsValid, value);
+        }
+
+        private ICommand _ReserveMachineCommand;
+        public ICommand ReserveMachineCommand
+        {
+            get => _ReserveMachineCommand;
+            set => SetProperty(ref _ReserveMachineCommand, value);
+        }
+
+        private void ReserveMachineCommandExecuted()
+        {
+            _BFFHInterface.ReserveMachine(Machine.ID);
+            UpdateMachine();
+        }
+
+
+        private ICommand _UseMachineCommand;
+        public ICommand UseMachineCommand
+        {
+            get => _UseMachineCommand;
+            set => SetProperty(ref _UseMachineCommand, value);
+        }
+
+        private void UseMachineCommandExecuted()
+        {
+            _BFFHInterface.UseMachine(Machine.ID);
+            UpdateMachine();
+        }
+
+        private ICommand _GiveBackMachineCommand;
+        public ICommand GiveBackMachineCommand
+        {
+            get => _GiveBackMachineCommand;
+            set => SetProperty(ref _GiveBackMachineCommand, value);
+        }
+
+        private void GiveBackMachineCommandExecuted()
+        {
+            _BFFHInterface.GiveBackMachine(Machine.ID);
+            UpdateMachine();
+        }
+
+        private ICommand _DisableMachineCommand;
+        public ICommand DisableMachineCommand
+        {
+            get => _DisableMachineCommand;
+            set => SetProperty(ref _DisableMachineCommand, value);
+        }
+
+        private void DisableMachineCommandExecuted()
+        {
+            if(Machine.State == MachineStates.Disabled)
+            {
+                _BFFHInterface.SetStateForce(Machine.ID, MachineStates.Free);
+            }
+            else
+            {
+                _BFFHInterface.SetStateForce(Machine.ID, MachineStates.Disabled);
+            }
+
+            UpdateMachine();
+        }
+
+        private ICommand _BlockMachineCommand;
+        public ICommand BlockMachineCommand
+        {
+            get => _BlockMachineCommand;
+            set => SetProperty(ref _BlockMachineCommand, value);
+        }
+
+        private void BlockMachineCommandExecuted()
+        {
+            if (Machine.State == MachineStates.Blocked)
+            {
+                _BFFHInterface.SetStateForce(Machine.ID, MachineStates.Free);
+            }
+            else
+            {
+                _BFFHInterface.SetStateForce(Machine.ID, MachineStates.Blocked);
+            }
+
+            UpdateMachine();
+        }
+
+        public bool CanUse
+        {
+            get
+            {
+                if(Machine == null)
+                {
+                    return false;
+                }
+
+                if(Machine.State == MachineStates.Free)
+                {
+                    return true;
+                }
+
+                if(Machine.State == MachineStates.Reserved)
+                {
+                    if(Machine.User == _BFFHInterface.ActiveUser)
+                    {
+                        return true;
+                    }
+                    else if(_BFFHInterface.IsAdmin())
+                    {
+                        return true;
+                    }
+                }
+
+                return false;
+            }
+        }
+
+        public bool CanReserve
+        {
+            get
+            {
+                if (Machine == null)
+                {
+                    return false;
+                }
+
+                if (Machine.State == MachineStates.Free)
+                {
+                    return true;
+                }
+
+                return false;
+            }
+        }
+
+        public bool CanGiveBack
+        {
+            get
+            {
+                if (Machine == null)
+                {
+                    return false;
+                }
+
+                if (Machine.State == MachineStates.InUse && Machine.User == _BFFHInterface.ActiveUser)
+                {
+                    return true;
+                }
+
+                return false;
+            }
+        }
+
+        public bool IsAdmin
+        {
+            get
+            {
+                if (_BFFHInterface == null)
+                {
+                    return false;
+                }
+
+                if (_BFFHInterface.IsAdmin())
+                {
+                    return true;
+                }
+
+                return false;
+            }
+        }
+
+        public void UpdateMachine()
+        {
+            Machine = BFFHService.GetMachine(Machine.ID);
+
+            OnPropertyChanged(new System.ComponentModel.PropertyChangedEventArgs("CanUse"));
+            OnPropertyChanged(new System.ComponentModel.PropertyChangedEventArgs("CanReserve"));
+            OnPropertyChanged(new System.ComponentModel.PropertyChangedEventArgs("CanGiveBack"));
+        }
+
+        public void OnNavigatedFrom(INavigationParameters parameters)
+        {
+            
+        }
+
+        public void OnNavigatedTo(INavigationParameters parameters)
+        {
+            string machineID = parameters["machineID"] as string;
+
+            if(machineID == null)
+            {
+                _IsValid = false;
+                return;
+            }
+
+            try
+            {
+                Machine = BFFHService.GetMachine(machineID);
+                IsValid = true;
+
+                UpdateMachine();
+            }
+            catch
+            {
+                _IsValid = false;
+            }
+        }
     }
 }
diff --git a/Borepin/Borepin/PageModel/MachinesPageModel.cs b/Borepin/Borepin/PageModel/MachinesPageModel.cs
index beb780a..7a8a6a7 100644
--- a/Borepin/Borepin/PageModel/MachinesPageModel.cs
+++ b/Borepin/Borepin/PageModel/MachinesPageModel.cs
@@ -1,4 +1,5 @@
 using Borepin.Model;
+using Borepin.Service;
 using Prism.Mvvm;
 using Prism.Navigation;
 using System;
@@ -10,11 +11,6 @@ using Xamarin.Forms;
 
 namespace Borepin.PageModel
 {
-    public class Employee
-    {
-        public string DisplayName { get; set; }
-    }
-
     public class MachinesPageModel : BindableBase
     {
         private INavigationService _navigationService;
@@ -22,13 +18,9 @@ namespace Borepin.PageModel
         public MachinesPageModel(INavigationService navigationService)
         {
             _navigationService = navigationService;
-            GoToMachineCommand = new Command<string>(GoToMachineCommandExecuted);
+            GoToMachineCommand = new Command<object>(GoToMachineCommandExecuted);
 
-            MachineList = new ObservableCollection<Machine>();
-            MachineList.Add(new Machine() { ID = "Machine 1", State = "InUse" });
-            MachineList.Add(new Machine() { ID = "Machine 1", State = "InUse" });
-            MachineList.Add(new Machine() { ID = "Machine 1", State = "InUse" });
-            MachineList.Add(new Machine() { ID = "Machine 1", State = "InUse" });
+            MachineList = new ObservableCollection<Machine>(BFFHService.GetMachines());
         }
 
         private ICommand _GoToMachineCommand;
@@ -38,9 +30,14 @@ namespace Borepin.PageModel
             set => SetProperty(ref _GoToMachineCommand, value);
         }
 
-        private async void GoToMachineCommandExecuted(string machineID)
+        private async void GoToMachineCommandExecuted(object obj)
         {
-            var result = await _navigationService.NavigateAsync($"NavigationPage/MachinePage/MachinePage?machineID={ machineID }");
+            Machine machine = obj as Machine;
+
+            NavigationParameters navigationParams = new NavigationParameters();
+            navigationParams.Add("machineID", machine.ID);
+
+            INavigationResult result = await _navigationService.NavigateAsync($"MachinePage", navigationParams);
             if (!result.Success)
             {
                 System.Diagnostics.Debugger.Break();
diff --git a/Borepin/Borepin/Service/MachineService.cs b/Borepin/Borepin/Service/MachineService.cs
new file mode 100644
index 0000000..fc20081
--- /dev/null
+++ b/Borepin/Borepin/Service/MachineService.cs
@@ -0,0 +1,245 @@
+using Borepin.Model;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Borepin.Service
+{
+    public static class BFFHDataService
+    {
+        public static List<Machine> _Machines;
+        public static List<User> _Users;
+
+        static BFFHDataService()
+        {
+            _Users = new List<User>()
+            {
+                new User()
+                {
+                    ID = "0",
+                    Name = "Nick Wise (Admin)",
+                    OriginalWorkshop = "fvm.fab-access.org"
+                },
+                new User()
+                {
+                    ID = "1",
+                    Name = "Tamia Langley",
+                    OriginalWorkshop = "fvm.fab-access.org"
+                },
+                new User()
+                {
+                    ID = "2",
+                    Name = "Jay James",
+                    OriginalWorkshop = "fvm.fab-access.org"
+                },
+                new User()
+                {
+                    ID = "3",
+                    Name = "Darragh Ellwood",
+                    OriginalWorkshop = "happylab.fab-access.org"
+                },
+                new User()
+                {
+                    ID = "4",
+                    Name = "Mila-Rose Mcknight",
+                    OriginalWorkshop = "motionlab.fab-access.org"
+                }
+            };
+
+            _Machines = new List<Machine>()
+            {
+                new Machine()
+                {
+                    ID = "MakerRobo UP",
+                    Description = "MakerRobo UP is a 3D Printer from Bangladesh",
+                    State = MachineStates.Free,
+                    User = null
+                },
+                new Machine()
+                {
+                    ID = "LS-1080-K 150W",
+                    Description = "Laser cutting and engraving" + "\n" +
+                                  "Cutting Area: 1000 x 800 mm" + "\n" +
+                                  "Materials: wood, cardboard, PMMA, textiles, etc." + "\n" +
+                                  "Supported files: DXF, AI, EPS, JPG, BMP",
+                    State = MachineStates.InUse,
+                    User = _Users.Find(x => x.ID == "1")
+                },
+                new Machine()
+                {
+                    ID = "Fireball V90",
+                    Description = "The V90 is a high performance, general purpose machine, suitable for many uses such as clock making, plaques, RC aircraft parts and more. 12x18x3 working space.",
+                    State = MachineStates.ToCheck,
+                    User = _Users.Find(x => x.ID == "0")
+                },
+                new Machine()
+                {
+                    ID = "IRB 1600-145 kg",
+                    Description = "Robotic Arm",
+                    State = MachineStates.Blocked,
+                    User = null
+                },
+                new Machine()
+                {
+                    ID = "Carmine 1.09",
+                    Description = "Primesense",
+                    State = MachineStates.Disabled,
+                    User = null
+                },
+                new Machine()
+                {
+                    ID = "Zmorph 2.0SX Multitool",
+                    Description = "FabLab in a box ",
+                    State = MachineStates.Reserved,
+                    User = _Users.Find(x => x.ID == "2")
+                },
+                new Machine()
+                {
+                    ID = "CubePro Duo",
+                    Description = "The CubePro features the largest-in-class build platform with ultra high-resolution. With prints 2.5 times larger than any other desktop prosumer and hobbyist printer (11.2 x 10.6 x 9.06 or 285.4mm x 270.4mm x 230mm) with ultra high-resolution settings of 70-micron thin print layers, professional quality printing has never been so large or easy.",
+                    State = MachineStates.Free,
+                    User = null
+                },
+            };
+        }
+    }
+
+    public class BFFHInterface
+    {
+        public readonly User ActiveUser;
+        public BFFHInterface(string userID)
+        {
+            ActiveUser = BFFHDataService._Users.Find(x => x.ID == userID);
+        }
+
+        public void UseMachine(string machineID)
+        {
+            Machine machinetouse = BFFHDataService._Machines.Find(x => x.ID == machineID);
+            
+            if (machinetouse == null)
+            {
+                throw new Exception("Unknown Machine");
+            }
+
+            int index = BFFHDataService._Machines.IndexOf(machinetouse);
+
+            if (machinetouse.State == MachineStates.Free)
+            {
+                machinetouse.State = MachineStates.InUse;
+                machinetouse.User = ActiveUser;
+            }
+
+            if(machinetouse.State == MachineStates.Reserved && machinetouse.User == ActiveUser)
+            {
+                machinetouse.State = MachineStates.InUse;
+                machinetouse.User = ActiveUser;
+            }
+
+            BFFHDataService._Machines[index] = machinetouse;
+        }
+
+        public void ReserveMachine(string machineID)
+        {
+            Machine machinetouse = BFFHDataService._Machines.Find(x => x.ID == machineID);
+            if (machinetouse == null)
+            {
+                throw new Exception("Unknown Machine");
+            }
+
+            int index = BFFHDataService._Machines.IndexOf(machinetouse);
+
+            if (machinetouse.State == MachineStates.Free)
+            {
+                machinetouse.State = MachineStates.Reserved;
+                machinetouse.User = ActiveUser;
+            }
+
+            BFFHDataService._Machines[index] = machinetouse;
+        }
+
+        public void GiveBackMachine(string machineID)
+        {
+            Machine machinetogiveback = BFFHDataService._Machines.Find(x => x.ID == machineID);
+            if (machinetogiveback == null)
+            {
+                throw new Exception("Unknown Machine");
+            }
+
+            int index = BFFHDataService._Machines.IndexOf(machinetogiveback);
+
+            if (machinetogiveback.State == MachineStates.InUse)
+            {
+                machinetogiveback.State = MachineStates.Free;
+                machinetogiveback.User = null;
+            }
+
+            BFFHDataService._Machines[index] = machinetogiveback;
+        }
+
+        public void SetStateForce(string machineID, MachineStates state)
+        {
+            if(IsAdmin())
+            {
+                Machine machinetosetstate = BFFHDataService._Machines.Find(x => x.ID == machineID);
+                if (machinetosetstate == null)
+                {
+                    throw new Exception("Unknown Machine");
+                }
+
+                int index = BFFHDataService._Machines.IndexOf(machinetosetstate);
+
+                machinetosetstate.State = state;
+
+                BFFHDataService._Machines[index] = machinetosetstate;
+            }
+            else
+            {
+                throw new Exception("Forbidden");
+            }
+        }
+
+        public bool IsAdmin()
+        {
+            return ActiveUser.ID == BFFHService.AdminID;
+        }
+    }
+
+
+    public static class BFFHService
+    {
+        public static readonly string Host = "fvm.fab-access.org";
+        public static readonly string AdminID = "0";
+
+        public static BFFHInterface Auth(string userID)
+        {
+            if(BFFHDataService._Users.Find(x => x.ID == userID) == null)
+            {
+                throw new Exception("Authentication failed");
+            }
+
+            return new BFFHInterface(userID);
+        }
+
+        public static List<Machine> GetMachines()
+        {
+            return BFFHDataService._Machines;
+        }
+
+        public static List<User> GetUsers()
+        {
+            return BFFHDataService._Users;
+        }
+
+        public static Machine GetMachine(string machineID)
+        {
+            Machine m = BFFHDataService._Machines.Find(x => x.ID == machineID);
+
+            if (m == null)
+            {
+                throw new Exception("Unknown Machine");
+            }
+
+            return m;
+        }
+    }
+}