From 14de17ed58c34c0ceb8d261e38bfef902fa8fd39 Mon Sep 17 00:00:00 2001
From: juliusmarminge <julius0216@outlook.com>
Date: Mon, 22 Jul 2024 10:28:15 +0200
Subject: [PATCH] add railway preset

---
 .changeset/short-shirts-sleep.md         |  5 ++++
 docs/src/app/docs/customization/page.mdx |  5 ++--
 packages/core/src/presets.ts             | 34 ++++++++++++++++++++++++
 3 files changed, 41 insertions(+), 3 deletions(-)
 create mode 100644 .changeset/short-shirts-sleep.md

diff --git a/.changeset/short-shirts-sleep.md b/.changeset/short-shirts-sleep.md
new file mode 100644
index 0000000..b441f22
--- /dev/null
+++ b/.changeset/short-shirts-sleep.md
@@ -0,0 +1,5 @@
+---
+"@t3-oss/env-core": minor
+---
+
+railway preset
diff --git a/docs/src/app/docs/customization/page.mdx b/docs/src/app/docs/customization/page.mdx
index b89de58..af3831f 100644
--- a/docs/src/app/docs/customization/page.mdx
+++ b/docs/src/app/docs/customization/page.mdx
@@ -99,11 +99,10 @@ T3 Env ships the following presets out of the box, all importable from the `/pre
 - `vercel` - Vercel environment variables. See full list [here](https://vercel.com/docs/projects/environment-variables/system-environment-variables#system-environment-variables).
 - `uploadthing` - All environment variables required to use [UploadThing](https://uploadthing.com/). More info [here](https://docs.uploadthing.com/getting-started/appdir#add-env-variables).
 - `render` - Render environment variables. See full list [here](https://docs.render.com/environment-variables#all-runtimes).
+- `railway` - Railway provided system environment variables. See full list [here](https://docs.railway.app/reference/variables#railway-provided-variables).
 
 <Callout type="info">
-
-Feel free to open a PR with more presets!
-
+  Feel free to open a PR with more presets!
 </Callout>
 
 A preset is just like any other env object, so you can easily create your own:
diff --git a/packages/core/src/presets.ts b/packages/core/src/presets.ts
index c7c0024..8e5aa37 100644
--- a/packages/core/src/presets.ts
+++ b/packages/core/src/presets.ts
@@ -66,3 +66,37 @@ export const render = () =>
     },
     runtimeEnv: process.env,
   });
+
+/**
+ * Railway Environment Variables
+ * @see https://docs.railway.app/reference/variables#railway-provided-variables
+ */
+export const railway = () =>
+  createEnv({
+    server: {
+      RAILWAY_PUBLIC_DOMAIN: z.string().optional(),
+      RAILWAY_PRIVATE_DOMAIN: z.string().optional(),
+      RAILWAY_TCP_PROXY_DOMAIN: z.string().optional(),
+      RAILWAY_TCP_PROXY_PORT: z.string().optional(),
+      RAILWAY_TCP_APPLICATION_PORT: z.string().optional(),
+      RAILWAY_PROJECT_NAME: z.string().optional(),
+      RAILWAY_PROJECT_ID: z.string().optional(),
+      RAILWAY_ENVIRONMENT_NAME: z.string().optional(),
+      RAILWAY_ENVIRONMENT_ID: z.string().optional(),
+      RAILWAY_SERVICE_NAME: z.string().optional(),
+      RAILWAY_SERVICE_ID: z.string().optional(),
+      RAILWAY_REPLICA_ID: z.string().optional(),
+      RAILWAY_DEPLOYMENT_ID: z.string().optional(),
+      RAILWAY_SNAPSHOT_ID: z.string().optional(),
+      RAILWAY_VOLUME_NAME: z.string().optional(),
+      RAILWAY_VOLUME_MOUNT_PATH: z.string().optional(),
+      RAILWAY_RUN_UID: z.string().optional(),
+      RAILWAY_GIT_COMMIT_SHA: z.string().optional(),
+      RAILWAY_GIT_AUTHOR_EMAIL: z.string().optional(),
+      RAILWAY_GIT_BRANCH: z.string().optional(),
+      RAILWAY_GIT_REPO_NAME: z.string().optional(),
+      RAILWAY_GIT_REPO_OWNER: z.string().optional(),
+      RAILWAY_GIT_COMMIT_MESSAGE: z.string().optional(),
+    },
+    runtimeEnv: process.env,
+  });