Yankee-massage.zip -

// RequestScreen.tsx
import useState from 'react';
import Button, ActivityIndicator, Text, View from 'react-native';
import socket from '../socket';
export default function RequestScreen(clientId) 
  const [loading, setLoading] = useState(false);
  const [match, setMatch] = useState(null);
  const [error, setError] = useState(null);
const startRequest = async () => 
    setLoading(true);
    const resp = await fetch('/api/v1/requests', 
      method: 'POST',
      headers: 'Content-Type':'application/json','Authorization':`Bearer $token`,
      body: JSON.stringify(
        clientId,
        durationMin: 60,
        massageType: 'Swedish',
        lat: userLocation.lat,
        lng: userLocation.lng,
      )
    );
    const data = await resp.json();
if (data.status === 'matched') 
      setMatch(data.match);
      // subscribe to live updates (cancellation, therapist ETA)
      socket.emit('joinMatchRoom', data.match.id);
     else  'No therapist found');
setLoading(false);
  ;
// Listen for realtime changes (e.g., therapist on‑the‑way updates)
  useEffect(() => 
    socket.on('matchUpdate', (payload) => setMatch(prev => (...prev, ...payload)));
    return () => socket.off('matchUpdate');
  , []);
return (
    <View style=flex:1, justifyContent:'center', alignItems:'center'>
      loading && <ActivityIndicator size="large"/>
      !loading && !match && <Button title="Get a Massage" onPress=startRequest/>
error && <Text style=color:'red'>error</Text>
match && (
        <View>
          <Text>Therapist: match.therapistName</Text>
          <Text>ETA: match.etaMinutes min</Text>
          <Text>Price: $(match.price_cents/100).toFixed(2)</Text>
          <Button title="Cancel" onPress=/* call cancel endpoint *//>
        </View>
      )
    </View>
  );

The UI only shows a single “Confirm” button – the heavy lifting is done on the server. This reduces friction and improves conversion.

-- Therapist (service provider)
CREATE TABLE therapists (
    id               UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    name             TEXT NOT NULL,
    rating           NUMERIC(2,1) DEFAULT 0.0,
    hourly_rate_cents INT NOT NULL,
    skills           TEXT[] NOT NULL,                 -- e.g., 'Swedish','Deep Tissue','Sports'
    home_location    GEOGRAPHY(Point,4326) NOT NULL,  -- latitude/longitude
    is_active        BOOLEAN DEFAULT TRUE,
    created_at       TIMESTAMP WITH TIME ZONE DEFAULT now()
);
-- Therapist availability slots (generated on‑the‑fly or pre‑saved)
CREATE TABLE therapist_slots (
    id               UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    therapist_id     UUID REFERENCES therapists(id) ON DELETE CASCADE,
    start_time       TIMESTAMPTZ NOT NULL,
    end_time         TIMESTAMPTZ NOT NULL,
    is_booked        BOOLEAN DEFAULT FALSE,
    CONSTRAINT chk_slot_duration CHECK (end_time > start_time)
);
-- Client request (temporary, used only while matching)
CREATE TABLE massage_requests (
    id               UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    client_id        UUID NOT NULL,
    requested_at     TIMESTAMPTZ DEFAULT now(),
    duration_min     INT NOT NULL CHECK (duration_min IN (30,45,60,90)),
    massage_type     TEXT NOT NULL,          -- must exist in therapist.skills
    location         GEOGRAPHY(Point,4326) NOT NULL,
    max_distance_m   INT DEFAULT 15000,      -- 15 km default search radius
    status           TEXT NOT NULL DEFAULT 'pending'   -- pending|matched|cancelled|failed
);

Why PostGIS?
It lets you compute “nearest therapist” with a single index‑supported query (ST_DWithin + ST_Distance). This is the heart of the “smart match”. yankee-massage.zip

A factual, educational piece titled:
“Why You Should Never Download ‘yankee-massage.zip’ – A Case Study in Suspicious File Names”
This would include: // RequestScreen

| Metric | Why It Matters | |--------|----------------| | Match Success Rate (matched / total requests) | Indicates algorithm coverage. | | Average ETA (minutes) | Direct impact on perceived speed. | | Cancellation Rate (client‑initiated) | Helps tune the “max‑distance” expansion logic. | | Therapist Utilization (booked slots / total available slots) | Revenue efficiency. | | NPS after session | Overall satisfaction (feed back into therapist rating). | The UI only shows a single “Confirm” button

All metrics can be emitted via a simple statsd client or an analytics platform (Amplitude, Mixpanel).