Initial commitTTS

2 files changed, 72 insertions, 0 deletions

diff --git a/TtsService.cs b/TtsService.cs
new file mode 100644
index 0000000..8d0a146
--- /dev/null
+++ b/TtsService.cs
@@ -0,0 +1,50 @@
+namespace PagerParser;
+
+public interface ITtsService {
+    public string GetTtsMessage(ParsedPagerMessage pm);
+}
+
+public class TtsService : ITtsService {
+    public static readonly Dictionary<string, string> IncidentTypeMap = new() {
+        { "ALAR", "FIRE ALARM"        },
+        { "G&S",  "GRASS & SCRUB"     },
+        { "HIAR", "HIGH-ANGLE RESCUE" },
+        { "INCI", "INCIDENT"          },
+        { "NOST", "NON-STRUCTURE"     },
+        { "RESC", "RESCUE"            },
+        { "STRU", "STRUCTURE"         }
+    };
+
+    private List<Landmark> landmarks;
+
+    public TtsService(IConfiguration config) =>
+        config.Bind("PagerParser:Landmarks", landmarks);
+
+    public string GetTtsMessage(ParsedPagerMessage pm) {
+        // If we have GPS coordinates for the page, check if
+        // it's near a well-known landmark and include that
+        // in the TTS message.
+        string? nearestLandmark = null;
+        if(pm.GpsPosition is not null)
+            nearestLandmark = landmarks
+                .Where(l => pm.GpsPosition.GetDistance(l.Latitude, l.Longitude) < l.Radius)
+                .OrderBy(l => pm.GpsPosition.GetDistance(l.Latitude, l.Longitude))
+                .Select(l => l.Name)
+                .FirstOrDefault();
+
+        return string.Join(" ", [
+            IncidentTypeMap.GetValueOrDefault(pm.JobType) ?? "UNKNOWN ALERT",
+            pm.Description,
+            nearestLandmark is null ? null : $"located near {nearestLandmark}",
+            // TODO: more detailed information on what services have been paged
+            pm.PagedServices.Count > 0 ? $"{pm.PagedServices.Count} services paged" : null
+            ]).Trim();
+    }
+}
+
+public record Landmark {
+    public string Name      { get; set; }
+    public double Latitude  { get; set; }
+    public double Longitude { get; set; }
+    public double Radius    { get; set; }
+}
diff --git a/appsettings.json b/appsettings.json
index 00b7c95..37fa847 100644
--- a/appsettings.json
+++ b/appsettings.json
@@ -27,6 +27,28 @@
     //    "BRIG": 500
     //  }
     //}
+    // Used when generating TTS messages to indicate proximity to a well-known location
+    //"Landmarks": [
+    //  { "Name": "Alira Village",                     "Radius": 300,  "Latitude": -38.047981231791276, "Longitude": 145.32244920730594 },
+    //  { "Name": "Beaconhills College",               "Radius": 350,  "Latitude": -38.049206312580075, "Longitude": 145.35716772079470 },
+    //  { "Name": "Bridgewater Boulevard",             "Radius": 300,  "Latitude": -38.063394000000000, "Longitude": 145.34790600000000 },
+    //  { "Name": "Casey Hospital",                    "Radius": 300,  "Latitude": -38.044846621406975, "Longitude": 145.34568786621097 },
+    //  { "Name": "Clyde Bunnings",                    "Radius": 1000, "Latitude": -38.092417418430440, "Longitude": 145.33373594284060 },
+    //  { "Name": "Eden Rise",                         "Radius": 1000, "Latitude": -38.061785000000000, "Longitude": 145.33969300000000 },
+    //  { "Name": "Enterprise Avenue",                 "Radius": 300,  "Latitude": -38.036996833045080, "Longitude": 145.33873558044436 },
+    //  { "Name": "Federation University",             "Radius": 250,  "Latitude": -38.039367067725905, "Longitude": 145.32928347587588 },
+    //  { "Name": "High Street",                       "Radius": 300,  "Latitude": -38.031495564962510, "Longitude": 145.34603118896487 },
+    //  { "Name": "Kambrya College",                   "Radius": 300,  "Latitude": -38.054516000000000, "Longitude": 145.34746300000000 },
+    //  { "Name": "King Road Harkaway",                "Radius": 750,  "Latitude": -38.000761990532860, "Longitude": 145.34697532653811 },
+    //  { "Name": "Nossal High School",                "Radius": 250,  "Latitude": -38.038779797476170, "Longitude": 145.32573223114017 },
+    //  { "Name": "Parkhill Plaza",                    "Radius": 500,  "Latitude": -38.014389136866830, "Longitude": 145.32280325889590 },
+    //  { "Name": "St Francis Xavier College",         "Radius": 500,  "Latitude": -38.070877000000000, "Longitude": 145.33843600000000 },
+    //  { "Name": "St Michael's Church",               "Radius": 270,  "Latitude": -38.032982891710270, "Longitude": 145.35382032394412 },
+    //  { "Name": "The Gateway Estate",                "Radius": 300,  "Latitude": -38.021573646929234, "Longitude": 145.31929492950442 },
+    //  { "Name": "The Old Cheesecake Factory",        "Radius": 400,  "Latitude": -38.054224705380925, "Longitude": 145.33377885818484 },
+    //  { "Name": "William Road",                      "Radius": 300,  "Latitude": -38.027151721917704, "Longitude": 145.33296346664432 },
+    //  { "Name": "Woodlands Park Retirement Village", "Radius": 300,  "Latitude": -38.047077193511520, "Longitude": 145.35088062286380 }
+    //]
   },
   "ConnectionStrings": {
     "DefaultConnection": "Host=127.0.0.1;Database=PagerParser;Username=pagerparser;Password=password"