From d0154a2b9be15f07d8282df57078e2086a381e0b Mon Sep 17 00:00:00 2001
From: Kayla Firestack <kfirestack@mbta.com>
Date: Thu, 10 Oct 2024 15:43:37 -0400
Subject: [PATCH 1/2] feat(ts/models/shuttle): create enum `ShuttleVariant`

---
 assets/src/models/shuttle.ts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/assets/src/models/shuttle.ts b/assets/src/models/shuttle.ts
index 026b99e9e..36b44294c 100644
--- a/assets/src/models/shuttle.ts
+++ b/assets/src/models/shuttle.ts
@@ -1,5 +1,17 @@
 import { Vehicle } from "../realtime"
 
+export enum ShuttleVariant {
+  // Rapid Transit Lines
+  Blue = "Blue",
+  Green = "Green",
+  Orange = "Orange",
+  Red = "Red",
+
+  // Other Shuttle Types
+  CommuterRail = "CR",
+  Special = "Special",
+}
+
 export const formattedRunNumber = ({ runId }: Vehicle): string => {
   if (runId === null) {
     return "Not Available"

From 1d06567dbf1de64f88f51cf703e22d30d5645fa1 Mon Sep 17 00:00:00 2001
From: Kayla Firestack <kfirestack@mbta.com>
Date: Thu, 10 Oct 2024 15:43:37 -0400
Subject: [PATCH 2/2] feat(ts/models/shuttle): create `RunId` to
 `ShuttleVariant ` "mapper"

The `RunId` => `ShuttleVariant ` relationship is "many to one", which makes this better suited for a function which returns the enum value from the `RunId`.
---
 assets/src/models/shuttle.ts | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/assets/src/models/shuttle.ts b/assets/src/models/shuttle.ts
index 36b44294c..74e67bef4 100644
--- a/assets/src/models/shuttle.ts
+++ b/assets/src/models/shuttle.ts
@@ -1,4 +1,4 @@
-import { Vehicle } from "../realtime"
+import { RunId, Vehicle } from "../realtime"
 
 export enum ShuttleVariant {
   // Rapid Transit Lines
@@ -12,6 +12,27 @@ export enum ShuttleVariant {
   Special = "Special",
 }
 
+export const shuttleVariantFromRunId = (
+  runId: RunId
+): ShuttleVariant | null => {
+  switch (runId) {
+    case "999-0501":
+      return ShuttleVariant.Blue
+    case "999-0502":
+      return ShuttleVariant.Green
+    case "999-0503":
+      return ShuttleVariant.Orange
+    case "999-0504":
+      return ShuttleVariant.Red
+    case "999-0505":
+      return ShuttleVariant.CommuterRail
+    case "999-0555":
+      return ShuttleVariant.Special
+    default:
+      return null
+  }
+}
+
 export const formattedRunNumber = ({ runId }: Vehicle): string => {
   if (runId === null) {
     return "Not Available"