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Allow for creation of environmental variables for self-hosting/and instance on a different domain/google cloud project #206

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Allow for creation of environmental variables for self-hosting/and instance on a different domain/google cloud project #206

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10 changes: 10 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,16 @@ The server that stores all the encrypted sharable drawings from [Excalidraw](htt

Get the [`service key`](https://cloud.google.com/iam/docs/creating-managing-service-account-keys) as JSON and store it under `keys` directory with the name of the project ID.

### Environment Variables

| Variable | Description | Default Value | Required |
| -------------------------- | ------------------------------------------------ | ------------------------------------------------------------------------------- | -------- |
| `GOOGLE_CLOUD_PROJECT` | Google Cloud project ID | `excalidraw-json-dev` | No |
| `GOOGLE_CLOUD_BUCKET_NAME` | Google Cloud Storage bucket name | `excalidraw-json.appspot.com` (prod) or `excalidraw-json-dev.appspot.com` (dev) | No |
| `NODE_ENV` | Environment mode | - | No |
| `ALLOW_ORIGINS` | Comma-separated list of allowed origins for CORS | Default allowed origins list | No |
| `PORT` | Port number for the server | `8080` | No |

### Commands

```
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29 changes: 19 additions & 10 deletions index.ts
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Expand Up @@ -8,9 +8,9 @@ import * as path from "path";
const PROJECT_NAME = process.env.GOOGLE_CLOUD_PROJECT || "excalidraw-json-dev";
const PROD = PROJECT_NAME === "excalidraw-json";
const LOCAL = process.env.NODE_ENV !== "production";
const BUCKET_NAME = PROD
? "excalidraw-json.appspot.com"
: "excalidraw-json-dev.appspot.com";
const BUCKET_NAME =
process.env.GOOGLE_CLOUD_BUCKET_NAME ||
(PROD ? "excalidraw-json.appspot.com" : "excalidraw-json-dev.appspot.com");

const FILE_SIZE_LIMIT = 2 * 1024 * 1024;
const storage = new Storage(
Expand All @@ -25,13 +25,22 @@ const storage = new Storage(
const bucket = storage.bucket(BUCKET_NAME);
const app = express();

let allowOrigins = [
"excalidraw.vercel.app",
"https://dai-shi.github.io",
"https://excalidraw.com",
"https://www.excalidraw.com",
"https://math.preview.excalidraw.com",
];
let allowOrigins: string[] = [];

if (process.env.ALLOW_ORIGINS) {
allowOrigins = process.env.ALLOW_ORIGINS.split(",").map((origin) =>
origin.trim()
);
} else {
allowOrigins = [
"excalidraw.vercel.app",
"https://dai-shi.github.io",
"https://excalidraw.com",
"https://www.excalidraw.com",
"https://math.preview.excalidraw.com",
];
}

if (!PROD) {
allowOrigins.push("http://localhost:");
}
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