Add Payload Feature Flags plugin with custom endpoints and configurations

src/endpoints/customEndpointHandler.ts

@@ -0,0 +1,78 @@
+import type { PayloadHandler } from 'payload'
+
+export const customEndpointHandler = (collectionSlug: string): PayloadHandler => 
+  async (req) => {
+    const { payload } = req
+    const url = new URL(req.url)
+    const pathParts = url.pathname.split('/').filter(Boolean)
+    const flagName = pathParts[pathParts.length - 1]
+    
+    // Check if we're fetching a specific flag
+    if (flagName && flagName !== 'feature-flags') {
+      try {
+        const result = await payload.find({
+          collection: collectionSlug,
+          where: {
+            name: {
+              equals: flagName,
+            },
+          },
+          limit: 1,
+        })
+
+        if (result.docs.length === 0) {
+          return Response.json(
+            { error: 'Feature flag not found' },
+            { status: 404 }
+          )
+        }
+
+        const flag = result.docs[0]
+        
+        // Return simplified flag data
+        return Response.json({
+          name: flag.name,
+          enabled: flag.enabled,
+          rolloutPercentage: flag.rolloutPercentage,
+          variants: flag.variants,
+          metadata: flag.metadata,
+        })
+      } catch (error) {
+        return Response.json(
+          { error: 'Failed to fetch feature flag' },
+          { status: 500 }
+        )
+      }
+    }
+
+    // Fetch all feature flags
+    try {
+      const result = await payload.find({
+        collection: collectionSlug,
+        limit: 1000, // Adjust as needed
+        where: {
+          enabled: {
+            equals: true,
+          },
+        },
+      })
+
+      // Return simplified flag data
+      const flags = result.docs.reduce((acc: any, flag: any) => {
+        acc[flag.name] = {
+          enabled: flag.enabled,
+          rolloutPercentage: flag.rolloutPercentage,
+          variants: flag.variants,
+          metadata: flag.metadata,
+        }
+        return acc
+      }, {})
+
+      return Response.json(flags)
+    } catch (error) {
+      return Response.json(
+        { error: 'Failed to fetch feature flags' },
+        { status: 500 }
+      )
+    }
+  }