Add support for half day sessions

Author: edwardhorsford

app/config.js

@@ -25,15 +25,12 @@ module.exports = {
 
   // Clinic settings
   clinics: {
-    // Timing
-    startTime: '09:00',
-    endTime: '17:00',
+    // Timings
     slotDurationMinutes: 8,
-    slotsPerDay: 32,
 
-    // Capacity
-    targetBookings: 60,
-    targetAttendance: 40,
+    // Target percentages
+    targetBookingPercent: 150, // 150% represents overbooking (e.g. 60 bookings for 40 slots)
+    targetAttendancePercent: 100, // 100% of original capacity (not overbooking)
 
     // Date range for generating data
     daysToGenerate: 7,

app/data/breast-screening-units.js

@@ -15,6 +15,24 @@ module.exports = [
     },
     phoneNumber: "01865235621",
     abbreviation: "OXF",
+    // Default operating hours for the BSU
+    sessionPatterns: [
+      {
+        name: 'full_day',
+        type: 'single',
+        sessions: [
+          { startTime: "09:00", endTime: "17:00" }
+        ]
+      },
+      {
+        name: 'split_day',
+        type: 'paired',
+        sessions: [
+          { startTime: "09:00", endTime: "12:00" },
+          { startTime: "13:00", endTime: "17:00" }
+        ]
+      }
+    ],
     locations: [
       {
         id: "duif1ywp", // Must be hardcoded so it matches generated data
@@ -47,14 +65,34 @@ module.exports = [
         name: "Mobile Unit WX71 HCP",
         type: "mobile_unit",
         isMainSite: false,
-        registration: "WX71 HCP"
+        registration: "WX71 HCP",
+        // Override BSU session patterns for this location
+        sessionPatterns: [
+          {
+            name: 'full_day',
+            type: 'single',
+            sessions: [
+              { startTime: "09:00", endTime: "17:00" }
+            ]
+          }
+        ]
       },
       {
         id: "acxcdcnj", // Must be hardcoded so it matches generated data
         name: "Mobile Unit WX71 HCR",
         type: "mobile_unit",
         isMainSite: false,
-        registration: "WX71 HCR"
+        registration: "WX71 HCR",
+        // Override BSU session patterns for this location
+        sessionPatterns: [
+          {
+            name: 'full_day',
+            type: 'single',
+            sessions: [
+              { startTime: "09:00", endTime: "17:00" }
+            ]
+          }
+        ]
       }
     ]
   }

app/lib/generate-seed-data.js

@@ -44,8 +44,7 @@ const generateData = async () => {
     breastScreeningUnits.forEach(unit => {
       const newClinics = generateClinicsForBSU({
         date: clinicDate,
-        breastScreeningUnit: unit,
-        config: config.clinics
+        breastScreeningUnit: unit
       });
 
       // Generate events for each clinic

app/lib/generators/clinic-generator.js

@@ -5,10 +5,13 @@ const generateId = require('../utils/id-generator');
 const dayjs = require('dayjs');
 const config = require('../../config');
 
-const generateTimeSlots = (date, config) => {
+
+const generateTimeSlots = (date, sessionTimes) => {
+  const { slotDurationMinutes } = config.clinics;
+  
   const slots = [];
-  const startTime = new Date(`${date.toISOString().split('T')[0]}T${config.startTime}`);
-  const endTime = new Date(`${date.toISOString().split('T')[0]}T${config.endTime}`);
+  const startTime = new Date(`${date.toISOString().split('T')[0]}T${sessionTimes.startTime}`);
+  const endTime = new Date(`${date.toISOString().split('T')[0]}T${sessionTimes.endTime}`);
 
   let currentTime = new Date(startTime);
   while (currentTime < endTime) {
@@ -18,9 +21,10 @@ const generateTimeSlots = (date, config) => {
       dateTime: new Date(currentTime).toISOString(),
       type: 'screening',
       capacity: 2,
-      bookedCount: 0
+      bookedCount: 0,
+      period: `${sessionTimes.startTime}-${sessionTimes.endTime}`
     });
-    currentTime.setMinutes(currentTime.getMinutes() + config.slotDurationMinutes);
+    currentTime.setMinutes(currentTime.getMinutes() + slotDurationMinutes);
   }
   return slots;
 };
@@ -56,36 +60,66 @@ const generateMobileSiteName = () => {
   return faker.helpers.arrayElement(sites);
 };
 
-// Generate multiple clinics for a BSU on a given day
-const generateClinicsForBSU = ({ date, breastScreeningUnit, config: clinicConfig }) => {
-  // Determine number of clinics for this BSU today (1-2)
-  const numberOfClinics = Math.random() < 0.3 ? 2 : 1;
+const determineSessionType = (sessionTimes) => {
+  const startHour = parseInt(sessionTimes.startTime.split(':')[0], 10);
+  return startHour < 12 ? 'morning' : 'afternoon';
+};
+
+const generateClinic = (date, location, breastScreeningUnit, sessionTimes) => {
+  const slots = generateTimeSlots(date, sessionTimes);
+  
+  return {
+    id: generateId(),
+    date: date.toISOString().split('T')[0],
+    breastScreeningUnitId: breastScreeningUnit.id,
+    clinicType: location.type,
+    locationId: location.id,
+    siteName: location.type === 'mobile_unit' ? generateMobileSiteName() : null,
+    slots,
+    status: determineClinicStatus(date),
+    staffing: {
+      mamographers: [],
+      radiologists: [],
+      support: []
+    },
+    targetCapacity: {
+      bookingPercent: config.clinics.targetBookingPercent,
+      attendancePercent: config.clinics.targetAttendancePercent,
+      totalSlots: slots.length * 2
+    },
+    notes: null,
+    sessionTimes,
+    sessionType: determineSessionType(sessionTimes)
+  };
+};
+
+const generateClinicsForBSU = ({ date, breastScreeningUnit }) => {
+  // Determine number of clinic locations for this day (1-2)
+  const numberOfLocations = Math.random() < 0.3 ? 2 : 1;
 
-  // Randomly select locations from available ones
+  // Randomly select locations
   const selectedLocations = faker.helpers.arrayElements(
     breastScreeningUnit.locations,
-    { min: numberOfClinics, max: numberOfClinics }
+    { min: numberOfLocations, max: numberOfLocations }
   );
 
-  return selectedLocations.map(location => {
-    return {
-      id: generateId(),
-      date: date.toISOString().split('T')[0],
-      breastScreeningUnitId: breastScreeningUnit.id,
-      clinicType: location.type,
-      locationId: location.id,
-      siteName: location.type === 'mobile_unit' ? generateMobileSiteName() : null,
-      slots: generateTimeSlots(date, clinicConfig),
-      status: determineClinicStatus(date),
-      staffing: {
-        mamographers: [],
-        radiologists: [],
-        support: []
-      },
-      targetBookings: clinicConfig.targetBookings,
-      targetAttendance: clinicConfig.targetAttendance,
-      notes: null
-    };
+  // Generate clinics for each location
+  return selectedLocations.flatMap(location => {
+    // Use location-specific patterns if available, otherwise use BSU patterns
+    const sessionPatterns = location.sessionPatterns || breastScreeningUnit.sessionPatterns;
+    
+    // Randomly select a pattern
+    const selectedPattern = faker.helpers.arrayElement(sessionPatterns);
+    
+    if (selectedPattern.type === 'single') {
+      // For single sessions, create one clinic
+      return [generateClinic(date, location, breastScreeningUnit, selectedPattern.sessions[0])];
+    } else {
+      // For paired sessions, create two clinics
+      return selectedPattern.sessions.map(sessionTimes => 
+        generateClinic(date, location, breastScreeningUnit, sessionTimes)
+      );
+    }
   });
 };