public static Parser <Exercise> GetParser(
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return
(from name in HeadingParser.GetParser(2)
from _ in VerticalSeparationParser.Parser
from setAndRepetitionCount in setAndRepetitionCountParser
from __ in VerticalSeparationParser.Parser
from matchersWithActions in GetMatchersWithActionsParser(audioService, delayService, loggerService, speechService).Optional()
select new Exercise(
loggerService,
speechService,
name,
setAndRepetitionCount.Item1,
setAndRepetitionCount.Item2,
matchersWithActions.GetOrElse(Enumerable.Empty <MatcherWithAction>())));
}
public static Parser<DoNotAwaitAction> GetParser(
int indentLevel,
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
if (indentLevel < 0)
{
throw new ArgumentException("indentLevel must be greater than or equal to 0.", "indentLevel");
}
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return
from _ in Parse.IgnoreCase("don't")
from __ in HorizontalWhitespaceParser.Parser.AtLeastOnce()
from ___ in Parse.IgnoreCase("wait:")
from ____ in VerticalSeparationParser.Parser.AtLeastOnce()
from actions in ActionListParser.GetParser(indentLevel + 1, audioService, delayService, loggerService, speechService)
let child = new SequenceAction(actions)
select new DoNotAwaitAction(
loggerService,
child);
}
public Exercise(ILoggerService loggerService, ISpeechService speechService, string name, int setCount, int repetitionCount, IEnumerable<MatcherWithAction> matchersWithActions)
{
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
name.AssertNotNull(nameof(name));
matchersWithActions.AssertNotNull(nameof(matchersWithActions));
if (setCount < 0)
{
throw new ArgumentException("setCount cannot be less than zero.", "setCount");
}
if (repetitionCount < 0)
{
throw new ArgumentException("repetitionCount cannot be less than zero.", "repetitionCount");
}
this.logger = loggerService.GetLogger(this.GetType());
this.speechService = speechService;
this.name = name;
this.setCount = setCount;
this.repetitionCount = repetitionCount;
this.matchersWithActions = matchersWithActions.ToImmutableList();
using (var dummyExecutionContext = new ExecutionContext())
{
this.duration = this
.GetEventsWithActions(dummyExecutionContext)
.SelectMany(x => x.Actions)
.Select(x => x.Duration)
.DefaultIfEmpty()
.Aggregate((running, next) => running + next);
}
}
public Exercise(ILoggerService loggerService, ISpeechService speechService, string name, int setCount, int repetitionCount, IEnumerable <MatcherWithAction> matchersWithActions)
{
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
name.AssertNotNull(nameof(name));
matchersWithActions.AssertNotNull(nameof(matchersWithActions));
if (setCount < 0)
{
throw new ArgumentException("setCount cannot be less than zero.", "setCount");
}
if (repetitionCount < 0)
{
throw new ArgumentException("repetitionCount cannot be less than zero.", "repetitionCount");
}
this.logger = loggerService.GetLogger(this.GetType());
this.speechService = speechService;
this.name = name;
this.setCount = setCount;
this.repetitionCount = repetitionCount;
this.matchersWithActions = matchersWithActions.ToImmutableList();
using (var dummyExecutionContext = new ExecutionContext())
{
this.duration = this
.GetEventsWithActions(dummyExecutionContext)
.SelectMany(x => x.Actions)
.Select(x => x.Duration)
.DefaultIfEmpty()
.Aggregate((running, next) => running + next);
}
}
public static Parser <DoNotAwaitAction> GetParser(
int indentLevel,
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
if (indentLevel < 0)
{
throw new ArgumentException("indentLevel must be greater than or equal to 0.", "indentLevel");
}
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return
(from _ in Parse.IgnoreCase("don't")
from __ in HorizontalWhitespaceParser.Parser.AtLeastOnce()
from ___ in Parse.IgnoreCase("wait:")
from ____ in VerticalSeparationParser.Parser.AtLeastOnce()
from actions in ActionListParser.GetParser(indentLevel + 1, audioService, delayService, loggerService, speechService)
let child = new SequenceAction(actions)
select new DoNotAwaitAction(
loggerService,
child));
}
public static Parser <IAction> GetParser(
int indentLevel,
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
if (indentLevel < 0)
{
throw new ArgumentException("indentLevel must be greater than or equal to 0.", "indentLevel");
}
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return(BreakActionParser.GetParser(delayService, speechService)
.Or <IAction>(MetronomeActionParser.GetParser(audioService, delayService, loggerService))
.Or <IAction>(PrepareActionParser.GetParser(delayService, speechService))
.Or <IAction>(SayActionParser.GetParser(speechService))
.Or <IAction>(WaitActionParser.GetParser(delayService))
.Or <IAction>(DoNotAwaitActionParser.GetParser(indentLevel, audioService, delayService, loggerService, speechService))
.Or <IAction>(ParallelActionParser.GetParser(indentLevel, audioService, delayService, loggerService, speechService))
.Or <IAction>(SequenceActionParser.GetParser(indentLevel, audioService, delayService, loggerService, speechService)));
}
public static Parser<IAction> GetParser(
int indentLevel,
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
if (indentLevel < 0)
{
throw new ArgumentException("indentLevel must be greater than or equal to 0.", "indentLevel");
}
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return BreakActionParser.GetParser(delayService, speechService)
.Or<IAction>(MetronomeActionParser.GetParser(audioService, delayService, loggerService))
.Or<IAction>(PrepareActionParser.GetParser(delayService, speechService))
.Or<IAction>(SayActionParser.GetParser(speechService))
.Or<IAction>(WaitActionParser.GetParser(delayService))
.Or<IAction>(DoNotAwaitActionParser.GetParser(indentLevel, audioService, delayService, loggerService, speechService))
.Or<IAction>(ParallelActionParser.GetParser(indentLevel, audioService, delayService, loggerService, speechService))
.Or<IAction>(SequenceActionParser.GetParser(indentLevel, audioService, delayService, loggerService, speechService));
}
public iCloudExerciseDocumentService(ILoggerService loggerService)
{
loggerService.AssertNotNull(nameof(loggerService));
this.logger = loggerService.GetLogger(this.GetType());
this.exerciseDocument = new BehaviorSubject<string>(null);
this.sync = new object();
}
public iCloudExerciseDocumentService(ILoggerService loggerService)
{
loggerService.AssertNotNull(nameof(loggerService));
this.logger = loggerService.GetLogger(this.GetType());
this.exerciseDocument = new BehaviorSubject <string>(null);
this.sync = new object();
}
public DoNotAwaitAction(ILoggerService loggerService, IAction innerAction)
{
loggerService.AssertNotNull(nameof(loggerService));
innerAction.AssertNotNull(nameof(innerAction));
this.logger = loggerService.GetLogger(this.GetType());
this.innerAction = innerAction;
}
public DoNotAwaitAction(ILoggerService loggerService, IAction innerAction)
{
loggerService.AssertNotNull(nameof(loggerService));
innerAction.AssertNotNull(nameof(innerAction));
this.logger = loggerService.GetLogger(this.GetType());
this.innerAction = innerAction;
}
public MetronomeAction(IAudioService audioService, IDelayService delayService, ILoggerService loggerService, IEnumerable <MetronomeTick> ticks)
{
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
ticks.AssertNotNull(nameof(ticks));
this.ticks = ticks.ToImmutableList();
this.innerAction = new SequenceAction(GetInnerActions(audioService, delayService, loggerService, this.ticks));
}
public StateService(IBlobCache blobCache, ILoggerService loggerSerive)
{
blobCache.AssertNotNull(nameof(blobCache));
loggerSerive.AssertNotNull(nameof(loggerSerive));
_blobCache = blobCache;
_logger = loggerSerive.GetLogger(this.GetType());
_saveCallbacks = new List <Func <IStateService, Task> >();
_sync = new object();
}
public StateService(IBlobCache blobCache, ILoggerService loggerService)
{
blobCache.AssertNotNull(nameof(blobCache));
loggerService.AssertNotNull(nameof(loggerService));
this.blobCache = blobCache;
this.logger = loggerService.GetLogger(this.GetType());
this.saveCallbacks = ImmutableList <SaveCallback> .Empty;
this.sync = new object();
}
public MetronomeAction(IAudioService audioService, IDelayService delayService, ILoggerService loggerService, IEnumerable<MetronomeTick> ticks)
{
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
ticks.AssertNotNull(nameof(ticks));
this.ticks = ticks.ToImmutableList();
this.innerAction = new SequenceAction(GetInnerActions(audioService, delayService, loggerService, this.ticks));
}
public GoogleDriveExerciseDocumentService(
ILoggerService loggerService,
IConnectionResultHandler connectionResultHandler)
{
loggerService.AssertNotNull(nameof(loggerService));
connectionResultHandler.AssertNotNull(nameof(connectionResultHandler));
this.logger = loggerService.GetLogger(this.GetType());
this.connectionResultHandler = connectionResultHandler;
this.exerciseDocument = new BehaviorSubject<string>(null);
this.sync = new object();
this.connectedDisposable = new SerialDisposable();
}
public GoogleDriveExerciseDocumentService(
ILoggerService loggerService,
IConnectionResultHandler connectionResultHandler)
{
loggerService.AssertNotNull(nameof(loggerService));
connectionResultHandler.AssertNotNull(nameof(connectionResultHandler));
this.logger = loggerService.GetLogger(this.GetType());
this.connectionResultHandler = connectionResultHandler;
this.exerciseDocument = new BehaviorSubject <string>(null);
this.sync = new object();
this.connectedDisposable = new SerialDisposable();
}
public ExerciseProgram(ILoggerService loggerService, string name, IEnumerable <Exercise> exercises)
{
loggerService.AssertNotNull(nameof(loggerService));
name.AssertNotNull(nameof(name));
exercises.AssertNotNull(nameof(exercises), assertContentsNotNull: true);
this.logger = loggerService.GetLogger(this.GetType());
this.name = name;
this.exercises = exercises.ToImmutableList();
this.duration = this
.exercises
.Select(x => x.Duration)
.DefaultIfEmpty()
.Aggregate((running, next) => running + next);
}
public ExerciseProgram(ILoggerService loggerService, string name, IEnumerable<Exercise> exercises)
{
loggerService.AssertNotNull(nameof(loggerService));
name.AssertNotNull(nameof(name));
exercises.AssertNotNull(nameof(exercises), assertContentsNotNull: true);
this.logger = loggerService.GetLogger(this.GetType());
this.name = name;
this.exercises = exercises.ToImmutableList();
this.duration = this
.exercises
.Select(x => x.Duration)
.DefaultIfEmpty()
.Aggregate((running, next) => running + next);
}
public static IResult<ExercisePrograms> TryParse(
string input,
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
input.AssertNotNull(nameof(input));
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return ExerciseProgramsParser.GetParser(audioService, delayService, loggerService, speechService).TryParse(input);
}
public static Parser <ExerciseProgram> GetParser(
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return
(from name in HeadingParser.GetParser(1)
from _ in Parse.WhiteSpace.Many()
from exercises in ExerciseParser.GetParser(audioService, delayService, loggerService, speechService).DelimitedBy(Parse.WhiteSpace.Many()).Optional()
select new ExerciseProgram(loggerService, name, exercises.GetOrElse(Enumerable.Empty <Exercise>())));
}
public static Parser <ExercisePrograms> GetParser(
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return
(from _ in VerticalSeparationParser.Parser
from exercisePrograms in ExerciseProgramParser.GetParser(audioService, delayService, loggerService, speechService).DelimitedBy(Parse.WhiteSpace.Many()).Optional()
from __ in Parse.WhiteSpace.Many().End()
select new ExercisePrograms(exercisePrograms.GetOrElse(Enumerable.Empty <ExerciseProgram>())));
}
public static Parser<ExerciseProgram> GetParser(
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return
from name in HeadingParser.GetParser(1)
from _ in Parse.WhiteSpace.Many()
from exercises in ExerciseParser.GetParser(audioService, delayService, loggerService, speechService).DelimitedBy(Parse.WhiteSpace.Many()).Optional()
select new ExerciseProgram(loggerService, name, exercises.GetOrElse(Enumerable.Empty<Exercise>()));
}
public static Parser<ExercisePrograms> GetParser(
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return
from _ in VerticalSeparationParser.Parser
from exercisePrograms in ExerciseProgramParser.GetParser(audioService, delayService, loggerService, speechService).DelimitedBy(Parse.WhiteSpace.Many()).Optional()
from __ in Parse.WhiteSpace.Many().End()
select new ExercisePrograms(exercisePrograms.GetOrElse(Enumerable.Empty<ExerciseProgram>()));
}
public static Parser <MetronomeAction> GetParser(
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService)
{
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
return
(from _ in Parse.IgnoreCase("metronome")
from __ in HorizontalWhitespaceParser.Parser.AtLeastOnce()
from ___ in Parse.IgnoreCase("at")
from ____ in HorizontalWhitespaceParser.Parser.AtLeastOnce()
from ticks in metronomeTickParser.DelimitedBy(Parse.Char(',').Token(HorizontalWhitespaceParser.Parser))
select new MetronomeAction(
audioService,
delayService,
loggerService,
ticks));
}
public static Parser<MetronomeAction> GetParser(
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService)
{
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
return
from _ in Parse.IgnoreCase("metronome")
from __ in HorizontalWhitespaceParser.Parser.AtLeastOnce()
from ___ in Parse.IgnoreCase("at")
from ____ in HorizontalWhitespaceParser.Parser.AtLeastOnce()
from ticks in metronomeTickParser.DelimitedBy(Parse.Char(',').Token(HorizontalWhitespaceParser.Parser))
select new MetronomeAction(
audioService,
delayService,
loggerService,
ticks);
}
public static Parser <ParallelAction> GetParser(
int indentLevel,
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
if (indentLevel < 0)
{
throw new ArgumentException("indentLevel must be greater than or equal to 0.", "indentLevel");
}
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return
(from _ in Parse.IgnoreCase("parallel:")
from __ in VerticalSeparationParser.Parser.AtLeastOnce()
from actions in ActionListParser.GetParser(indentLevel + 1, audioService, delayService, loggerService, speechService)
select new ParallelAction(actions));
}
public static Parser<IEnumerable<IAction>> GetParser(
int indentLevel,
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
if (indentLevel < 0)
{
throw new ArgumentException("indentLevel must be greater than or equal to 0.", "indentLevel");
}
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return
(from _ in Parse.String(" ").Or(Parse.String("\t")).Repeat(indentLevel)
from __ in Parse.String("* ")
from action in ActionParser.GetParser(indentLevel, audioService, delayService, loggerService, speechService).Token(HorizontalWhitespaceParser.Parser)
select action).DelimitedBy(NewLineParser.Parser);
}
public static Parser<ParallelAction> GetParser(
int indentLevel,
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
if (indentLevel < 0)
{
throw new ArgumentException("indentLevel must be greater than or equal to 0.", "indentLevel");
}
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return
from _ in Parse.IgnoreCase("parallel:")
from __ in VerticalSeparationParser.Parser.AtLeastOnce()
from actions in ActionListParser.GetParser(indentLevel + 1, audioService, delayService, loggerService, speechService)
select new ParallelAction(actions);
}
public static Parser <IEnumerable <IAction> > GetParser(
int indentLevel,
IAudioService audioService,
IDelayService delayService,
ILoggerService loggerService,
ISpeechService speechService)
{
if (indentLevel < 0)
{
throw new ArgumentException("indentLevel must be greater than or equal to 0.", "indentLevel");
}
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
loggerService.AssertNotNull(nameof(loggerService));
speechService.AssertNotNull(nameof(speechService));
return
((from _ in Parse.String(" ").Or(Parse.String("\t")).Repeat(indentLevel)
from __ in Parse.String("* ")
from action in ActionParser.GetParser(indentLevel, audioService, delayService, loggerService, speechService).Token(HorizontalWhitespaceParser.Parser)
select action).DelimitedBy(NewLineParser.Parser));
}
public ExerciseProgramViewModel(
ILoggerService loggerService,
ISchedulerService schedulerService,
IScreen hostScreen,
ExerciseProgram model)
{
loggerService.AssertNotNull(nameof(loggerService));
schedulerService.AssertNotNull(nameof(schedulerService));
hostScreen.AssertNotNull(nameof(hostScreen));
model.AssertNotNull(nameof(model));
this.logger = loggerService.GetLogger(this.GetType());
this.schedulerService = schedulerService;
this.model = model;
this.hostScreen = hostScreen;
this.disposables = new CompositeDisposable();
this.exercises = this.model.Exercises.CreateDerivedCollection(x => new ExerciseViewModel(schedulerService, x, this.WhenAnyValue(y => y.ExecutionContext)));
this
.WhenAnyValue(
x => x.ExecutionContext,
x => x.ExecutionContext.IsCancelled,
(ec, isCancelled) => ec != null && !isCancelled)
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.IsStarted = x)
.AddTo(this.disposables);
this
.WhenAnyValue(x => x.ExecutionContext)
.Select(x => x == null ? Observable.Return(false) : x.WhenAnyValue(y => y.IsPaused))
.Switch()
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.IsPaused = x)
.AddTo(this.disposables);
this
.WhenAnyValue(x => x.ExecutionContext)
.Select(x => x == null ? Observable.Return(TimeSpan.Zero) : x.WhenAnyValue(y => y.Progress))
.Switch()
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.ProgressTimeSpan = x)
.AddTo(this.disposables);
this
.WhenAnyValue(x => x.ProgressTimeSpan)
.Select(x => x.TotalMilliseconds / this.model.Duration.TotalMilliseconds)
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.Progress = x)
.AddTo(this.disposables);
this
.WhenAnyValue(
x => x.ExecutionContext,
x => x.ExecutionContext.CurrentExercise,
(ec, currentExercise) => ec == null ? null : currentExercise)
.Select(x => this.Exercises.SingleOrDefault(y => y.Model == x))
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.CurrentExercise = x)
.AddTo(this.disposables);
var canStart = this
.WhenAnyValue(x => x.IsStarted)
.Select(x => !x)
.ObserveOn(schedulerService.MainScheduler)
.Do(x => System.Diagnostics.Debug.WriteLine("CanStart changing to " + x));
this.startCommand = ReactiveCommand
.CreateAsyncObservable(canStart, this.OnStartAsync, schedulerService.MainScheduler)
.AddTo(this.disposables);
var canPause = this
.WhenAnyValue(x => x.IsStarted)
.CombineLatest(this.WhenAnyValue(x => x.ExecutionContext.IsPaused), (isStarted, isPaused) => isStarted && !isPaused)
.ObserveOn(schedulerService.MainScheduler);
this.pauseCommand = ReactiveCommand
.CreateAsyncObservable(canPause, this.OnPauseAsync, schedulerService.MainScheduler)
.AddTo(this.disposables);
var canResume = this
.WhenAnyValue(x => x.IsStarted)
.CombineLatest(this.WhenAnyValue(x => x.ExecutionContext.IsPaused), (isStarted, isPaused) => isStarted && isPaused)
.ObserveOn(schedulerService.MainScheduler);
this.resumeCommand = ReactiveCommand
.CreateAsyncObservable(canResume, this.OnResumeAsync, schedulerService.MainScheduler)
.AddTo(this.disposables);
var canSkipBackwards = this
.WhenAnyValue(
x => x.ExecutionContext,
x => x.ProgressTimeSpan,
(ec, progress) => new { ExecutionContext = ec, Progress = progress })
.Select(x => x.ExecutionContext != null && x.Progress >= skipBackwardsThreshold)
.ObserveOn(schedulerService.MainScheduler);
this.skipBackwardsCommand = ReactiveCommand
.CreateAsyncObservable(canSkipBackwards, this.OnSkipBackwardsAsync, schedulerService.MainScheduler)
.AddTo(this.disposables);
var canSkipForwards = this
.WhenAnyValue(
x => x.ExecutionContext,
x => x.CurrentExercise,
(ec, currentExercise) => new { ExecutionContext = ec, CurrentExercise = currentExercise })
.Select(x => x.ExecutionContext != null && x.CurrentExercise != null && x.CurrentExercise != this.exercises.LastOrDefault())
.ObserveOn(schedulerService.MainScheduler);
this.skipForwardsCommand = ReactiveCommand
.CreateAsyncObservable(canSkipForwards, this.OnSkipForwardsAsync, schedulerService.MainScheduler)
.AddTo(this.disposables);
this.startCommand
.CanExecuteObservable
.Subscribe(x => this.IsStartVisible = x)
.AddTo(this.disposables);
this.pauseCommand
.CanExecuteObservable
.Subscribe(x => this.IsPauseVisible = x)
.AddTo(this.disposables);
this.resumeCommand
.CanExecuteObservable
.Subscribe(x => this.IsResumeVisible = x)
.AddTo(this.disposables);
this.startCommand
.ThrownExceptions
.Subscribe(ex => this.OnThrownException("start", ex))
.AddTo(this.disposables);
this.pauseCommand
.ThrownExceptions
.Subscribe(ex => this.OnThrownException("pause", ex))
.AddTo(this.disposables);
this.resumeCommand
.ThrownExceptions
.Subscribe(ex => this.OnThrownException("resume", ex))
.AddTo(this.disposables);
this.skipBackwardsCommand
.ThrownExceptions
.Subscribe(ex => this.OnThrownException("skip backwards", ex))
.AddTo(this.disposables);
this.skipForwardsCommand
.ThrownExceptions
.Subscribe(ex => this.OnThrownException("skip forwards", ex))
.AddTo(this.disposables);
// we don't use a reactive command here because switching in different commands causes it to get confused and
// command binding leaves the target button disabled. We could also have not used command binding to get around
// this problem
this.playbackCommand = new PlaybackCommandImpl(this);
// cancel the exercise program if the user navigates away
this
.hostScreen
.Router
.NavigationStack
.ItemsRemoved
.OfType <ExerciseProgramViewModel>()
.SelectMany(x => x.StopAsync())
.Subscribe()
.AddTo(this.disposables);
}
public ExerciseProgramViewModel(
ILoggerService loggerService,
ISchedulerService schedulerService,
IScreen hostScreen,
ExerciseProgram model)
{
loggerService.AssertNotNull(nameof(loggerService));
schedulerService.AssertNotNull(nameof(schedulerService));
hostScreen.AssertNotNull(nameof(hostScreen));
model.AssertNotNull(nameof(model));
this.logger = loggerService.GetLogger(this.GetType());
this.schedulerService = schedulerService;
this.model = model;
this.hostScreen = hostScreen;
this.disposables = new CompositeDisposable();
this.exercises = this.model.Exercises.CreateDerivedCollection(x => new ExerciseViewModel(schedulerService, x, this.WhenAnyValue(y => y.ExecutionContext)));
this
.WhenAnyValue(
x => x.ExecutionContext,
x => x.ExecutionContext.IsCancelled,
(ec, isCancelled) => ec != null && !isCancelled)
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.IsStarted = x)
.AddTo(this.disposables);
this
.WhenAnyValue(x => x.ExecutionContext)
.Select(x => x == null ? Observable.Return(false) : x.WhenAnyValue(y => y.IsPaused))
.Switch()
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.IsPaused = x)
.AddTo(this.disposables);
this
.WhenAnyValue(x => x.ExecutionContext)
.Select(x => x == null ? Observable.Return(TimeSpan.Zero) : x.WhenAnyValue(y => y.Progress))
.Switch()
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.ProgressTimeSpan = x)
.AddTo(this.disposables);
this
.WhenAnyValue(x => x.ProgressTimeSpan)
.Select(x => x.TotalMilliseconds / this.model.Duration.TotalMilliseconds)
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.Progress = x)
.AddTo(this.disposables);
this
.WhenAnyValue(
x => x.ExecutionContext,
x => x.ExecutionContext.CurrentExercise,
(ec, currentExercise) => ec == null ? null : currentExercise)
.Select(x => this.Exercises.SingleOrDefault(y => y.Model == x))
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.CurrentExercise = x)
.AddTo(this.disposables);
var canStart = this
.WhenAnyValue(x => x.IsStarted)
.Select(x => !x)
.ObserveOn(schedulerService.MainScheduler)
.Do(x => System.Diagnostics.Debug.WriteLine("CanStart changing to " + x));
this.startCommand = ReactiveCommand
.CreateAsyncObservable(canStart, this.OnStartAsync, schedulerService.MainScheduler)
.AddTo(this.disposables);
var canPause = this
.WhenAnyValue(x => x.IsStarted)
.CombineLatest(this.WhenAnyValue(x => x.ExecutionContext.IsPaused), (isStarted, isPaused) => isStarted && !isPaused)
.ObserveOn(schedulerService.MainScheduler);
this.pauseCommand = ReactiveCommand
.CreateAsyncObservable(canPause, this.OnPauseAsync, schedulerService.MainScheduler)
.AddTo(this.disposables);
var canResume = this
.WhenAnyValue(x => x.IsStarted)
.CombineLatest(this.WhenAnyValue(x => x.ExecutionContext.IsPaused), (isStarted, isPaused) => isStarted && isPaused)
.ObserveOn(schedulerService.MainScheduler);
this.resumeCommand = ReactiveCommand
.CreateAsyncObservable(canResume, this.OnResumeAsync, schedulerService.MainScheduler)
.AddTo(this.disposables);
var canSkipBackwards = this
.WhenAnyValue(
x => x.ExecutionContext,
x => x.ProgressTimeSpan,
(ec, progress) => new { ExecutionContext = ec, Progress = progress })
.Select(x => x.ExecutionContext != null && x.Progress >= skipBackwardsThreshold)
.ObserveOn(schedulerService.MainScheduler);
this.skipBackwardsCommand = ReactiveCommand
.CreateAsyncObservable(canSkipBackwards, this.OnSkipBackwardsAsync, schedulerService.MainScheduler)
.AddTo(this.disposables);
var canSkipForwards = this
.WhenAnyValue(
x => x.ExecutionContext,
x => x.CurrentExercise,
(ec, currentExercise) => new { ExecutionContext = ec, CurrentExercise = currentExercise })
.Select(x => x.ExecutionContext != null && x.CurrentExercise != null && x.CurrentExercise != this.exercises.LastOrDefault())
.ObserveOn(schedulerService.MainScheduler);
this.skipForwardsCommand = ReactiveCommand
.CreateAsyncObservable(canSkipForwards, this.OnSkipForwardsAsync, schedulerService.MainScheduler)
.AddTo(this.disposables);
this.startCommand
.CanExecuteObservable
.Subscribe(x => this.IsStartVisible = x)
.AddTo(this.disposables);
this.pauseCommand
.CanExecuteObservable
.Subscribe(x => this.IsPauseVisible = x)
.AddTo(this.disposables);
this.resumeCommand
.CanExecuteObservable
.Subscribe(x => this.IsResumeVisible = x)
.AddTo(this.disposables);
this.startCommand
.ThrownExceptions
.Subscribe(ex => this.OnThrownException("start", ex))
.AddTo(this.disposables);
this.pauseCommand
.ThrownExceptions
.Subscribe(ex => this.OnThrownException("pause", ex))
.AddTo(this.disposables);
this.resumeCommand
.ThrownExceptions
.Subscribe(ex => this.OnThrownException("resume", ex))
.AddTo(this.disposables);
this.skipBackwardsCommand
.ThrownExceptions
.Subscribe(ex => this.OnThrownException("skip backwards", ex))
.AddTo(this.disposables);
this.skipForwardsCommand
.ThrownExceptions
.Subscribe(ex => this.OnThrownException("skip forwards", ex))
.AddTo(this.disposables);
// we don't use a reactive command here because switching in different commands causes it to get confused and
// command binding leaves the target button disabled. We could also have not used command binding to get around
// this problem
this.playbackCommand = new PlaybackCommandImpl(this);
// cancel the exercise program if the user navigates away
this
.hostScreen
.Router
.NavigationStack
.ItemsRemoved
.OfType<ExerciseProgramViewModel>()
.SelectMany(x => x.StopAsync())
.Subscribe()
.AddTo(this.disposables);
}
public ExerciseProgramsViewModel(
IAudioService audioService,
IDelayService delayService,
IExerciseDocumentService exerciseDocumentService,
ILoggerService loggerService,
ISchedulerService schedulerService,
ISpeechService speechService,
IStateService stateService,
IScreen hostScreen,
ExerciseProgramViewModelFactory exerciseProgramViewModelFactory)
{
audioService.AssertNotNull(nameof(audioService));
delayService.AssertNotNull(nameof(delayService));
exerciseDocumentService.AssertNotNull(nameof(exerciseDocumentService));
loggerService.AssertNotNull(nameof(loggerService));
schedulerService.AssertNotNull(nameof(schedulerService));
speechService.AssertNotNull(nameof(speechService));
stateService.AssertNotNull(nameof(stateService));
hostScreen.AssertNotNull(nameof(hostScreen));
exerciseProgramViewModelFactory.AssertNotNull(nameof(exerciseProgramViewModelFactory));
this.exerciseDocumentService = exerciseDocumentService;
this.stateService = stateService;
this.logger = loggerService.GetLogger(this.GetType());
this.hostScreen = hostScreen;
this.disposables = new CompositeDisposable();
var documentsFromCache = this
.stateService
.GetAsync <string>(exerciseProgramsCacheKey)
.Where(x => x != null)
.Select(x => new DocumentSourceWith <string>(DocumentSource.Cache, x));
var documentsFromService = this
.exerciseDocumentService
.ExerciseDocument
.Where(x => x != null)
.Select(x => new DocumentSourceWith <string>(DocumentSource.Service, x));
var documents = documentsFromCache
.Catch((Exception ex) => Observable.Empty <DocumentSourceWith <string> >())
.Concat(documentsFromService)
.Do(x => this.logger.Debug("Received document from {0}.", x.Source))
.Publish();
var safeDocuments = documents
.Catch((Exception ex) => Observable.Empty <DocumentSourceWith <string> >());
var results = documents
.ObserveOn(schedulerService.TaskPoolScheduler)
.Select(
x =>
{
IResult <ExercisePrograms> parsedExercisePrograms;
using (this.logger.Perf("Parsing exercise programs from {0}.", x.Source))
{
parsedExercisePrograms = ExercisePrograms.TryParse(x.Item, audioService, delayService, loggerService, speechService);
}
return(new DocumentSourceWith <IResult <ExercisePrograms> >(x.Source, parsedExercisePrograms));
})
.Publish();
var safeResults = results
.Catch((Exception ex) => Observable.Empty <DocumentSourceWith <IResult <ExercisePrograms> > >());
safeResults
.Select(x => x.Item.WasSuccessful ? null : x.Item.ToString())
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.ParseErrorMessage = x)
.AddTo(this.disposables);
results
.Select(x => !x.Item.WasSuccessful ? ExerciseProgramsViewModelStatus.ParseFailed : x.Source == DocumentSource.Cache ? ExerciseProgramsViewModelStatus.LoadedFromCache : ExerciseProgramsViewModelStatus.LoadedFromService)
.Catch((Exception ex) => Observable.Return(ExerciseProgramsViewModelStatus.LoadFailed))
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.Status = x)
.AddTo(this.disposables);
safeResults
.Select(x => x.Item.WasSuccessful ? x.Item.Value : null)
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.Model = x)
.AddTo(this.disposables);
this.WhenAnyValue(x => x.Model)
.Select(x => x == null ? null : x.Programs.CreateDerivedCollection(y => exerciseProgramViewModelFactory(y)))
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.Programs = x)
.AddTo(this.disposables);
safeDocuments
.Where(x => x.Source == DocumentSource.Service)
.SelectMany(x => this.stateService.SetAsync(exerciseProgramsCacheKey, x.Item))
.Subscribe()
.AddTo(this.disposables);
results
.Connect()
.AddTo(this.disposables);
documents
.Connect()
.AddTo(this.disposables);
this
.WhenAnyValue(x => x.SelectedProgram)
.Where(x => x != null)
.Subscribe(x => this.hostScreen.Router.Navigate.Execute(x))
.AddTo(this.disposables);
this
.hostScreen
.Router
.CurrentViewModel
.OfType <ExerciseProgramsViewModel>()
.Subscribe(x => x.SelectedProgram = null)
.AddTo(this.disposables);
}