feat: Add OAuthProxy (#18)

Author: LekoArts

package.json

@@ -40,6 +40,12 @@
 		"tslib": "^2.8.1",
 		"typescript": "^5.9.3",
 		"vite": "^7.3.0",
+		"vite-plugin-devtools-json": "^1.0.0",
 		"vitest": "^4.0.16"
+	},
+	"pnpm": {
+		"onlyBuiltDependencies": [
+			"esbuild"
+		]
 	}
-}
+}

pnpm-lock.yaml

@@ -2,7 +2,7 @@ import { getRequestEvent } from '$app/server'
 import { PRIVATE_BETTER_AUTH_SECRET, PRIVATE_TRAKT_CLIENT_ID, PRIVATE_TRAKT_CLIENT_SECRET } from '$env/static/private'
 import { PUBLIC_BETTER_AUTH_URL } from '$env/static/public'
 import { betterAuth } from 'better-auth'
-import { customSession, genericOAuth } from 'better-auth/plugins'
+import { customSession, genericOAuth, oAuthProxy } from 'better-auth/plugins'
 import { sveltekitCookies } from 'better-auth/svelte-kit'
 
 interface TraktUser {
@@ -22,6 +22,10 @@ interface TraktUser {
 export const auth = betterAuth({
 	secret: PRIVATE_BETTER_AUTH_SECRET,
 	baseURL: PUBLIC_BETTER_AUTH_URL,
+	trustedOrigins: [
+		PUBLIC_BETTER_AUTH_URL,
+		...(process.env.NETLIFY_URL ? [process.env.NETLIFY_URL] : []),
+	],
 	// Stateless mode - no database required
 	// This will automatically enable JWT-based sessions in cookies
 	session: {
@@ -83,5 +87,8 @@ export const auth = betterAuth({
 			}
 		}),
 		sveltekitCookies(getRequestEvent),
+		oAuthProxy({
+			productionURL: PUBLIC_BETTER_AUTH_URL,
+		})
 	],
 })

src/lib/auth.ts

@@ -1,16 +1,13 @@
-import { enhancedImages } from '@sveltejs/enhanced-img'
-import { sveltekit } from '@sveltejs/kit/vite'
-import { defineConfig } from 'vitest/config'
+import devtoolsJson from 'vite-plugin-devtools-json';
+import { enhancedImages } from '@sveltejs/enhanced-img';
+import { sveltekit } from '@sveltejs/kit/vite';
+import { defineConfig } from 'vitest/config';
 
 export default defineConfig({
-	plugins: [
-		enhancedImages(),
-		sveltekit(),
-	],
+	plugins: [enhancedImages(), sveltekit(), devtoolsJson()],
+
 	test: {
 		include: ['src/**/__tests__/*.ts'],
-		coverage: {
-			include: ['src/lib/utils/*.ts', 'src/lib/actions.ts'],
-		},
-	},
-})
+		coverage: { include: ['src/lib/utils/*.ts', 'src/lib/actions.ts'] }
+	}
+});