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llink/js/mobile/src/features/compose/ComposeDock.tsx
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2026-04-29 13:29:02 -07:00

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TypeScript

import { useCallback, useEffect, useRef, useState } from "react";
import { Pressable, Text, View } from "react-native";
import { Mic, Type as TypeIcon, Video as VideoIcon } from "lucide-react-native";
import * as Haptics from "expo-haptics";
import { setAudioModeAsync } from "expo-audio";
import {
useCameraPermissions,
useMicrophonePermissions,
} from "expo-camera";
import {
Gesture,
GestureDetector,
} from "react-native-gesture-handler";
import Animated, {
Easing,
runOnJS,
useAnimatedStyle,
useSharedValue,
withTiming,
} from "react-native-reanimated";
import { toast } from "sonner-native";
import { cn } from "@/lib/utils";
import { useEvent } from "@/hooks/use-event";
import { logError } from "@/lib/errors";
import { useSuspendPlayback } from "@/hooks/use-suspend-playback";
import { useAuthStore } from "@/stores/auth-store";
import {
createTextParticle,
uploadMediaParticle,
} from "@/lib/upload";
import type { ParticlePath } from "@/lib/particle-path";
import {
useStreamComposingBroadcast,
type ComposingMode,
} from "@/features/stream-view/stream-presence-context";
import { TextComposeModal } from "./TextComposeModal";
import { VideoRecordingOverlay } from "./VideoRecordingOverlay";
import { AudioRecordingOverlay } from "./AudioRecordingOverlay";
import { ReviewSheet } from "./ReviewSheet";
type RecordingMode = "video" | "audio";
type PendingAction = "commit" | "cancel" | null;
type ComposeUiState =
| { kind: "idle" }
| { kind: "warming-up"; mode: RecordingMode }
| { kind: "recording"; mode: RecordingMode }
| {
kind: "review";
mode: RecordingMode;
uri: string;
durationMs: number;
}
| { kind: "uploading" };
const CANCEL_THRESHOLD_PX = 120;
const SHORT_RELEASE_MS = 350;
interface SubmitMediaParams {
fileUri: string;
mimeType: string;
durationMs: number;
source: "camera" | "screen";
}
interface ComposeDockProps {
networkId: string;
/** Where new particles are created. Defaults to the current stream. */
targetPath: ParticlePath;
/**
* When true, the dock won't broadcast composing state — used by the
* new-stream screen where there's no presence channel to broadcast to.
*/
silentPresence?: boolean;
/**
* Optional: replace the default media upload logic. NewStreamScreen uses
* this to create the stream + first particle in one shot. The dock still
* owns the review-sheet / haptic / state-machine flow; only the final
* persistence step is swapped.
*/
submitMedia?: (params: SubmitMediaParams) => Promise<void>;
/** Optional: replace the default text-particle creation. */
submitText?: (content: string) => Promise<void>;
}
/**
* Bottom dock + recording orchestrator. The hold-to-record gesture lives on
* the FAB and drives every state transition. `cancelProgress` is a worklet
* shared value the overlays read for live cancel-pill animations. Playback
* is suspended via the pause-store while the dock is anything but idle.
*/
export function ComposeDock({
networkId,
targetPath,
silentPresence = false,
submitMedia,
submitText: submitTextOverride,
}: ComposeDockProps) {
const userId = useAuthStore((s) => s.user?.id);
const [mode, setMode] = useState<RecordingMode>("video");
const [ui, setUi] = useState<ComposeUiState>({ kind: "idle" });
const [textOpen, setTextOpen] = useState(false);
// Both overlays read this prop to know how to finalize. It's set on release
// and cleared as the overlay unmounts.
const [pendingAction, setPendingAction] = useState<PendingAction>(null);
const [camPerm, requestCamPerm] = useCameraPermissions();
const [micPerm, requestMicPerm] = useMicrophonePermissions();
// Suspend underlying playback whenever the dock isn't idle. Mirrors how
// desktop's compose-overlay flips the playback-pause-store.
const isComposing = ui.kind !== "idle" || textOpen;
useSuspendPlayback(isComposing, "compose");
// Broadcast composing state over Pusher so other viewers see the dot.
// When silentPresence is set we skip — the dock renders outside a stream
// (e.g. NewStreamScreen) where no presence channel exists yet.
useComposingBroadcast({ ui, textOpen, silent: silentPresence });
// Worklet-side flag the overlays read for live cancel UI.
const cancelProgress = useSharedValue(0);
// Press start time, kept on a ref so worklets can read it via runOnJS.
const pressStartedAtRef = useRef<number | null>(null);
const ensurePermissions = useCallback(
async (forVideo: boolean): Promise<boolean> => {
if (forVideo) {
const cam = camPerm?.granted ? camPerm : await requestCamPerm();
if (!cam.granted) {
toast.error("Camera permission is required to record video.");
return false;
}
}
const mic = micPerm?.granted ? micPerm : await requestMicPerm();
if (!mic.granted) {
toast.error("Microphone permission is required to record.");
return false;
}
return true;
},
[camPerm, micPerm, requestCamPerm, requestMicPerm],
);
// ----- Lifecycle handlers -----
const beginRecording = useEvent(async () => {
if (ui.kind !== "idle") return;
pressStartedAtRef.current = Date.now();
const ok = await ensurePermissions(mode === "video");
if (!ok) {
pressStartedAtRef.current = null;
return;
}
// iOS requires the audio session to allow recording before either the
// audio recorder or the camera's audio track will work.
try {
await setAudioModeAsync({
allowsRecording: true,
playsInSilentMode: true,
});
} catch (err) {
logError(err, { scope: "compose.audio.setMode.record" });
}
void Haptics.impactAsync(Haptics.ImpactFeedbackStyle.Medium);
setUi({ kind: "warming-up", mode });
});
// Restore the audio session to playback-only when we leave recording,
// otherwise iOS keeps routing playback through the earpiece.
const restoreAudioMode = useCallback(() => {
setAudioModeAsync({
allowsRecording: false,
playsInSilentMode: true,
}).catch((err) =>
logError(err, { scope: "compose.audio.setMode.restore" }),
);
}, []);
const handleRecordingStarted = useCallback(() => {
setUi((prev) =>
prev.kind === "warming-up"
? { kind: "recording", mode: prev.mode }
: prev,
);
}, []);
const handleRecordingComplete = useCallback(
({ uri, durationMs }: { uri: string; durationMs: number }) => {
void Haptics.selectionAsync();
setUi((prev) => {
const m = "mode" in prev ? prev.mode : mode;
return { kind: "review", mode: m, uri, durationMs };
});
setPendingAction(null);
pressStartedAtRef.current = null;
restoreAudioMode();
},
[mode, restoreAudioMode],
);
const handleRecordingCancel = useCallback(() => {
setUi({ kind: "idle" });
setPendingAction(null);
pressStartedAtRef.current = null;
cancelProgress.value = 0;
restoreAudioMode();
}, [cancelProgress, restoreAudioMode]);
const finalizeFromGesture = useEvent(({ cancelled }: { cancelled: boolean }) => {
const heldMs = pressStartedAtRef.current
? Date.now() - pressStartedAtRef.current
: 0;
// Recording never warmed up to "recording" — drop back to idle without
// shipping anything (permission denied, or mount race).
if (ui.kind === "warming-up") {
setUi({ kind: "idle" });
pressStartedAtRef.current = null;
cancelProgress.value = 0;
restoreAudioMode();
return;
}
if (ui.kind !== "recording") return;
const wantCancel = cancelled || heldMs < SHORT_RELEASE_MS;
if (wantCancel) {
void Haptics.impactAsync(Haptics.ImpactFeedbackStyle.Light);
}
setPendingAction(wantCancel ? "cancel" : "commit");
cancelProgress.value = 0;
});
// ----- Gesture: hold-to-record on FAB -----
const pan = Gesture.Pan()
.minDistance(0)
.activateAfterLongPress(120)
.onStart(() => {
"worklet";
runOnJS(beginRecording)();
})
.onUpdate((e) => {
"worklet";
const upPx = Math.max(0, -e.translationY);
cancelProgress.value = Math.min(upPx / CANCEL_THRESHOLD_PX, 1);
})
.onEnd((e) => {
"worklet";
const cancelled = e.translationY < -CANCEL_THRESHOLD_PX;
runOnJS(finalizeFromGesture)({ cancelled });
})
.onFinalize(() => {
"worklet";
cancelProgress.value = 0;
});
// ----- Submit handlers -----
const sendReview = useEvent(async () => {
if (ui.kind !== "review" || !userId) return;
const captured = ui;
setUi({ kind: "uploading" });
try {
const mimeType =
captured.mode === "audio" ? "audio/mp4" : "video/mp4";
if (submitMedia) {
await submitMedia({
fileUri: captured.uri,
mimeType,
durationMs: captured.durationMs,
source: "camera",
});
} else {
await uploadMediaParticle({
networkId,
targetPath,
fileUri: captured.uri,
mimeType,
durationMs: captured.durationMs,
source: "camera",
createdByHumanId: userId,
});
}
void Haptics.notificationAsync(Haptics.NotificationFeedbackType.Success);
setUi({ kind: "idle" });
} catch (err) {
void Haptics.notificationAsync(Haptics.NotificationFeedbackType.Error);
// Restore the review sheet so the user can retry without losing their
// take. The sheet's own toast already surfaced the error message.
setUi(captured);
throw err;
}
});
const retake = useCallback(() => setUi({ kind: "idle" }), []);
const cancelReview = useCallback(() => setUi({ kind: "idle" }), []);
const submitText = useEvent(async (content: string) => {
if (!userId) throw new Error("Not signed in.");
if (submitTextOverride) {
await submitTextOverride(content);
} else {
await createTextParticle({
networkId,
targetPath,
content,
createdByHumanId: userId,
});
}
void Haptics.notificationAsync(Haptics.NotificationFeedbackType.Success);
});
// ----- FAB animations -----
const fabScale = useSharedValue(1);
useEffect(() => {
const target = ui.kind === "recording" ? 1.18 : 1;
fabScale.value = withTiming(target, {
duration: 220,
easing: Easing.out(Easing.cubic),
});
}, [ui.kind, fabScale]);
const fabStyle = useAnimatedStyle(() => ({
transform: [{ scale: fabScale.value }],
}));
const ringStyle = useAnimatedStyle(() => {
const opacity = ui.kind === "recording" ? 1 : 0;
const armed = cancelProgress.value > 0.5;
return {
opacity,
borderColor: armed
? "rgba(239, 68, 68, 0.95)"
: "rgba(255,255,255,0.95)",
};
});
// ----- Render -----
const dockHidden = ui.kind === "review" || ui.kind === "uploading";
return (
<>
{!dockHidden ? (
<View pointerEvents="box-none" className="absolute inset-x-0 bottom-0">
<View
pointerEvents="box-none"
className="flex-row items-center justify-between px-8 pb-10"
>
<Pressable
onPress={() =>
setMode((m) => (m === "video" ? "audio" : "video"))
}
disabled={ui.kind !== "idle"}
accessibilityLabel={`Switch to ${
mode === "video" ? "audio" : "video"
} mode`}
className={cn(
"h-11 w-11 items-center justify-center rounded-full bg-white/15",
ui.kind !== "idle" && "opacity-40",
)}
>
{mode === "video" ? (
<VideoIcon color="white" size={20} strokeWidth={1.6} />
) : (
<Mic color="white" size={20} strokeWidth={1.6} />
)}
</Pressable>
<View className="items-center">
<GestureDetector gesture={pan}>
<Animated.View
style={fabStyle}
className="h-20 w-20 items-center justify-center rounded-full bg-white"
>
<Animated.View
pointerEvents="none"
style={[
{
position: "absolute",
top: -6,
left: -6,
right: -6,
bottom: -6,
borderRadius: 999,
borderWidth: 3,
},
ringStyle,
]}
/>
<View
className={cn(
"h-6 w-6 rounded",
ui.kind === "recording" ? "bg-red-500" : "bg-black",
)}
/>
</Animated.View>
</GestureDetector>
<Text className="text-white/60 mt-2 text-xs">
{ui.kind === "recording"
? "Release to send · slide up to cancel"
: "Hold to record"}
</Text>
</View>
<Pressable
onPress={() => setTextOpen(true)}
disabled={ui.kind !== "idle"}
accessibilityLabel="Compose text"
className={cn(
"h-11 w-11 items-center justify-center rounded-full bg-white/15",
ui.kind !== "idle" && "opacity-40",
)}
>
<TypeIcon color="white" size={20} strokeWidth={1.6} />
</Pressable>
</View>
</View>
) : null}
{ui.kind === "warming-up" || ui.kind === "recording" ? (
ui.mode === "video" ? (
<VideoRecordingOverlay
cancelProgress={cancelProgress}
onComplete={handleRecordingComplete}
onCancel={handleRecordingCancel}
onRecordingStarted={handleRecordingStarted}
pendingAction={pendingAction}
/>
) : (
<AudioRecordingOverlay
cancelProgress={cancelProgress}
onComplete={handleRecordingComplete}
onCancel={handleRecordingCancel}
onRecordingStarted={handleRecordingStarted}
pendingAction={pendingAction}
/>
)
) : null}
<ReviewSheet
open={ui.kind === "review"}
uri={ui.kind === "review" ? ui.uri : null}
mode={ui.kind === "review" ? ui.mode : null}
durationMs={ui.kind === "review" ? ui.durationMs : 0}
onSend={sendReview}
onRetake={retake}
onCancel={cancelReview}
/>
<TextComposeModal
open={textOpen}
onClose={() => setTextOpen(false)}
onSubmit={submitText}
/>
</>
);
}
/**
* Reads the dock UI state and tells the StreamPresenceContext when to start
* or stop broadcasting composing_start/composing_stop. The hook intentionally
* uses optional context access so the dock can also be hosted on the
* new-stream screen, where there's no provider above us.
*/
function useComposingBroadcast({
ui,
textOpen,
silent,
}: {
ui: ComposeUiState;
textOpen: boolean;
silent: boolean;
}) {
// Optional consumer — `useStreamComposingBroadcast` throws when used
// outside its provider, so we trap that here. Cheap because the throw
// happens once per mount.
let broadcast: ReturnType<typeof useStreamComposingBroadcast> | null;
try {
broadcast = useStreamComposingBroadcast();
} catch {
broadcast = null;
}
const mode: ComposingMode | null =
ui.kind === "recording" || ui.kind === "warming-up"
? "recording"
: textOpen
? "typing"
: null;
useEffect(() => {
if (silent || !broadcast) return;
if (mode) {
broadcast.startComposing(mode);
return () => broadcast?.stopComposing();
}
}, [mode, silent, broadcast]);
}