338 lines
13 KiB
C#
338 lines
13 KiB
C#
using System.Collections.ObjectModel;
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using System.Windows;
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using System.Windows.Input;
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using System.Windows.Threading;
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using ytLive.Helpers;
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using ytLive.Models;
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using ytLive.Services;
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using ytLive.Services.Encoder;
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namespace ytLive.ViewModels;
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public partial class MainViewModel : ViewModelBase
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{
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private readonly DispatcherTimer _liveTimer;
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private readonly DispatcherTimer _healthPollTimer;
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private StreamStatus _streamStatus = StreamStatus.Offline;
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private StreamHealth _currentHealth = new();
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private string _streamTitle = string.Empty;
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private string _streamDescription = string.Empty;
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private string _streamVisibility = "Private";
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private string? _currentBroadcastId;
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private string? _reusableStreamUrl;
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private ReusableStream? _reusableStream;
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private string? _healthIssueBanner;
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private string _healthIssueBackground = "Transparent";
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private string _windowTitle = "LlamaCasty";
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private string _topBarBackground = "#16213e";
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private string _previewGlowBrush = "Transparent";
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private Thickness _previewGlowThickness = new(0);
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private string _liveElapsedText = "00:00:00";
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private double _recDotPulse = 1.0;
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private TimeSpan _liveElapsed;
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// ─── Recording (TASK 18): REC / ON-AIR pills — the pills are intent;
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// ─── IsRecording / IsLive are reality. ON-AIR needs a sign-in, and the
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// ─── pills are radio-exclusive (record-OR-live, creator ruling 2026-09-01):
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// ─── arming one clears the other.
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private bool _recordPillOn;
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private bool _onAirPillOn;
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private bool _isRecording;
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/// <summary>Resolved record folder — the configured choice, or Downloads (0th case).</summary>
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private readonly FramePump _framePump;
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public StreamStatus StreamStatus
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{
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get => _streamStatus;
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set
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{
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if (SetProperty(ref _streamStatus, value))
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{
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OnPropertyChanged(nameof(IsOffline));
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OnPropertyChanged(nameof(IsLive));
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OnPropertyChanged(nameof(IsEditMode));
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OnPropertyChanged(nameof(RecDotBrush));
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OnPropertyChanged(nameof(RecTextBrush));
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OnPropertyChanged(nameof(RecDotOpacity));
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OnPropertyChanged(nameof(OnAirBrush));
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OnPropertyChanged(nameof(IsLivePrivate));
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OnPropertyChanged(nameof(ShowPrimaryStartButton));
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OnPropertyChanged(nameof(ShowEndStreamButton));
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OnPropertyChanged(nameof(EndButtonText));
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OnPropertyChanged(nameof(AccountStatusLightToolTip));
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OnPropertyChanged(nameof(ShowChatInactiveMessage));
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OnPropertyChanged(nameof(ShowPreviewPlaceholder));
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UpdateLiveVisuals();
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}
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}
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}
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public bool IsOffline => StreamStatus == StreamStatus.Offline;
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public bool IsLive => StreamStatus == StreamStatus.Streaming;
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public bool IsLivePrivate => IsLive && string.Equals(StreamVisibility, "Private", StringComparison.OrdinalIgnoreCase);
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public string RecDotBrush => !IsRecording ? "#555555" : "#e94560";
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public string RecTextBrush => (IsLive || IsRecording) ? "#ffffff" : "#888888";
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public double RecDotOpacity => IsRecording ? _recDotPulse : 0.55;
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public string OnAirBrush => !IsLive ? "#555555" : IsLivePrivate ? "#22c55e" : "#e94560";
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// ─── REC / ON-AIR pills (TASK 18) ───
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public bool RecordPillOn
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{
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get => _recordPillOn;
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set
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{
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if (!SetProperty(ref _recordPillOn, value)) return;
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if (value && _onAirPillOn) OnAirPillOn = false; // record-OR-live — arming REC drops ON-AIR
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OnPropertyChanged(nameof(ShowPrimaryStartButton));
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OnPropertyChanged(nameof(CanStartSession));
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}
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}
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public bool OnAirPillOn
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{
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get => _onAirPillOn;
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set
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{
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// Armable signed-out (creator ruling 2026-09-20: a greyed pill was a
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// dead end — intent must be able to light while offline). The pill is
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// intent, not reality; the Start face turns this into a sign-in.
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if (!SetProperty(ref _onAirPillOn, value)) return;
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if (value && _recordPillOn) RecordPillOn = false; // record-OR-live — arming ON-AIR drops REC
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OnPropertyChanged(nameof(ShowPrimaryStartButton));
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OnPropertyChanged(nameof(CanStartSession));
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OnPropertyChanged(nameof(PrimaryStartButtonLabel));
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}
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}
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/// <summary>Whether the session is actively recording — the REC status light
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/// turns green only when this is true (the pill is intent, this is reality).
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/// Internal setter is a test seam (same pattern as LayoutPathOverride) so the
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/// failure-rollback path can be exercised without running the real pipeline.</summary>
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public bool IsRecording
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{
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get => _isRecording;
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internal set
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{
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if (!SetProperty(ref _isRecording, value)) return;
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OnPropertyChanged(nameof(RecDotBrush));
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OnPropertyChanged(nameof(RecTextBrush));
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OnPropertyChanged(nameof(RecDotOpacity));
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OnPropertyChanged(nameof(IsEditMode));
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OnPropertyChanged(nameof(ShowEndStreamButton));
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OnPropertyChanged(nameof(ShowPrimaryStartButton));
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OnPropertyChanged(nameof(EndButtonText));
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UpdateSessionTimer();
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}
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}
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/// <summary>The primary button is ALWAYS the idle face of the top bar (2026-09-01):
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/// stopping a session used to hide every start affordance (pills clear on stop,
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/// and the old gate needed a sign-in or a lit pill — signed-out creators found a
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/// blank bar). No dead ends: an unarmed Start records (local needs no account);
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/// sign-in lives in the Start context menu.</summary>
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public bool ShowPrimaryStartButton => IsOffline && !IsRecording;
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/// <summary>Either output selected makes the button actionable.</summary>
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public bool CanStartSession => RecordPillOn || OnAirPillOn;
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/// <summary>Face of the primary Start button. The idle face is reality-aware:
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/// while the ON-AIR pill is armed signed-out it reads "Sign In" so intent-lit
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/// intent is never a dead-end Start (— the pill is intent, the account is
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/// reality, and a greyed face would be the dead end that failed to ship, creator
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/// ruling 2026-09-20-02). The face flips back to "Start" the moment a session
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/// connects; the armable signed-out pill gets to keep its intent through the
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/// sign-in.</summary>
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public string PrimaryStartButtonLabel =>
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IsConnected || !OnAirPillOn ? "Start" : "Sign In";
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/// <summary>The End button shows while recording OR live.</summary>
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public bool ShowEndStreamButton => IsLive || IsRecording;
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/// <summary>The one button whose label changes: while recording it reads
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/// "Stop Recording", while live "End Stream".</summary>
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public string EndButtonText => IsRecording && !IsLive ? "Stop Recording" : "End Stream";
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public StreamHealth CurrentHealth
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{
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get => _currentHealth;
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set => SetProperty(ref _currentHealth, value);
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}
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/// <summary>Report-by-exception YouTube health (TASK 5 item 3): non-null only
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/// while a warning/error configuration issue exists — the banner's text.
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/// good/ok/noData keep it null so nothing renders.</summary>
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public string? HealthIssueBanner
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{
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get => _healthIssueBanner;
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private set => SetProperty(ref _healthIssueBanner, value);
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}
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/// <summary>Banner background: app red (#8f1f1f) for an error issue, amber
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/// (#b8860b) for a warning. Transparent when no banner is shown.</summary>
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public string HealthIssueBackground
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{
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get => _healthIssueBackground;
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private set => SetProperty(ref _healthIssueBackground, value);
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}
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public string StreamTitle
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{
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get => _streamTitle;
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set => SetProperty(ref _streamTitle, value);
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}
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public string StreamDescription
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{
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get => _streamDescription;
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set => SetProperty(ref _streamDescription, value);
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}
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public string StreamVisibility
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{
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get => _streamVisibility;
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set
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{
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if (SetProperty(ref _streamVisibility, value))
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{
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OnPropertyChanged(nameof(RecDotBrush));
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OnPropertyChanged(nameof(RecTextBrush));
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OnPropertyChanged(nameof(OnAirBrush));
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OnPropertyChanged(nameof(IsLivePrivate));
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}
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}
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}
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public string WindowTitle
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{
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get => _windowTitle;
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set => SetProperty(ref _windowTitle, value);
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}
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public string TopBarBackground
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{
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get => _topBarBackground;
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set => SetProperty(ref _topBarBackground, value);
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}
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public string PreviewGlowBrush
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{
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get => _previewGlowBrush;
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set => SetProperty(ref _previewGlowBrush, value);
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}
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public Thickness PreviewGlowThickness
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{
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get => _previewGlowThickness;
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set => SetProperty(ref _previewGlowThickness, value);
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}
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public string LiveElapsedText
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{
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get => _liveElapsedText;
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set => SetProperty(ref _liveElapsedText, value);
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}
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// ─── Broadcast metadata pull-out (the "Text" tab on the Live screen) ───
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/// <summary>The broadcast id of the current/last session; null until Go Live
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/// succeeds. Gates the pull-out's Update button (nothing remote to patch).</summary>
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public string? CurrentBroadcastId => _currentBroadcastId;
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public Services.LiveBroadcastFormViewModel BroadcastForm { get; }
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// ─── Resolution quality dropdown (bottom bar) ───
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// Tiers offered to the creator before going live. First = default. The
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// dropdown is disabled while live because YouTube stream resolution is
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// immutable after stream creation (see TASKS.md compliance notes).
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// The composition master frame. Every tier is an output rect + target
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// resolution over this frame (see ai.md "Resolution tiers"): 16:9 tiers
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// use the full frame; the vertical tier uses a centered 9:16 window and
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// the preview dims the cropped strips (semi-crop).
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private const double MasterFrameWidth = 1920;
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private const double MasterFrameHeight = 1080;
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public QualityOption[] QualityOptions { get; } =
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{
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new("1080p60", 60, 8.0, 1920, 1080),
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new("1080p30", 30, 8.0, 1920, 1080),
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new("720p60", 60, 6.0, 1280, 720),
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new("720p30", 30, 6.0, 1280, 720),
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new("Vertical 1080p60", 60, 8.0, 1080, 1920),
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};
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public string ResolutionHelp { get; } =
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"Pick the highest resolution your upload bandwidth can comfortably sustain. " +
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"Find your upload speed on your ISP plan or with a speed test (e.g. fast.com), " +
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"then choose a tier your upload comfortably exceeds. 1080p60 is the default.";
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private QualityOption _selectedQuality;
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public QualityOption SelectedQuality
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{
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get => _selectedQuality;
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set
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{
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if (SetProperty(ref _selectedQuality, value))
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ApplyStreamQuality(value);
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}
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}
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// Output frame of the selected tier over the 1920x1080 master. The strips
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// outside it are dimmed in the preview so the cropped area stays visible.
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public double OutputRectX { get; private set; }
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public double OutputRectY { get; private set; }
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public double OutputRectWidth { get; private set; }
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public double OutputRectHeight { get; private set; }
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public bool IsOutputCropped { get; private set; }
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public string ResolutionBadgeText { get; private set; } = string.Empty;
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public ObservableCollection<Rect> DimRects { get; } = new();
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private void ApplyStreamQuality(QualityOption quality)
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{
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var health = CurrentHealth;
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health.CurrentBitrate = quality.Bitrate;
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health.FPS = quality.Fps;
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OnPropertyChanged(nameof(CurrentHealth));
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var scale = Math.Min(MasterFrameWidth / quality.Width, MasterFrameHeight / quality.Height);
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var rectW = quality.Width * scale;
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var rectH = quality.Height * scale;
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var rectX = (MasterFrameWidth - rectW) / 2;
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var rectY = (MasterFrameHeight - rectH) / 2;
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OutputRectX = rectX;
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OutputRectY = rectY;
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OutputRectWidth = rectW;
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OutputRectHeight = rectH;
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DimRects.Clear();
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if (rectX > 0) DimRects.Add(new Rect(0, 0, rectX, MasterFrameHeight));
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if (rectX + rectW < MasterFrameWidth)
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DimRects.Add(new Rect(rectX + rectW, 0, MasterFrameWidth - rectX - rectW, MasterFrameHeight));
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if (rectY > 0) DimRects.Add(new Rect(0, 0, MasterFrameWidth, rectY));
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if (rectY + rectH < MasterFrameHeight)
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DimRects.Add(new Rect(0, rectY + rectH, MasterFrameWidth, MasterFrameHeight - rectY - rectH));
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IsOutputCropped = DimRects.Count > 0;
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ResolutionBadgeText = $"{quality.Label} · {quality.Width}×{quality.Height}";
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OnPropertyChanged(nameof(OutputRectX));
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OnPropertyChanged(nameof(OutputRectY));
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OnPropertyChanged(nameof(OutputRectWidth));
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OnPropertyChanged(nameof(OutputRectHeight));
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OnPropertyChanged(nameof(IsOutputCropped));
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OnPropertyChanged(nameof(ResolutionBadgeText));
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}
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public ICommand StartStreamCommand { get; }
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public ICommand EndStreamCommand { get; }
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public ICommand SignInCommand { get; }
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public ICommand ChooseRecordFolderCommand { get; }
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public ICommand ResetRecordFolderCommand { get; }
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}
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