Add feature flag for posthog support

We want to run posthog only on prod environment.

.env

@@ -5,3 +5,4 @@ REACT_APP_MULTICALL_ADDRESS=$MULTICALL_ADDRESS
 
 REACT_APP_FEATURE_FLAG_TBTC_V2=false
 REACT_APP_FEATURE_FLAG_MULTI_APP_STAKING=true
+REACT_APP_FEATURE_FLAG_POSTHOG=false

.env.production

@@ -4,3 +4,4 @@ REACT_APP_ETH_HOSTNAME_WS=$ETH_HOSTNAME_WS
 
 REACT_APP_FEATURE_FLAG_TBTC_V2=false
 REACT_APP_FEATURE_FLAG_MULTI_APP_STAKING=true
+REACT_APP_FEATURE_FLAG_POSTHOG=$POSTHOG_SUPPORT

.github/workflows/dashboard-mainnet.yml

@@ -57,6 +57,7 @@ jobs:
           CHAIN_ID: 1
           ETH_HOSTNAME_HTTP: ${{ secrets.MAINNET_ETH_HOSTNAME_HTTP }}
           ETH_HOSTNAME_WS: ${{ secrets.MAINNET_ETH_HOSTNAME_WS }}
+          POSTHOG_SUPPORT: true
 
       - uses: actions/upload-artifact@v3
         with:

src/constants/featureFlags.ts

@@ -1,7 +1,10 @@
 import { EnvVariable } from "../enums"
-import { getEnvVariable } from "../utils/getEnvVariable"
+import { getEnvVariable, supportedChainId } from "../utils/getEnvVariable"
 
 export const TBTC_V2 =
   getEnvVariable(EnvVariable.FEATURE_FLAG_TBTC_V2) === "true"
 export const MULTI_APP_STAKING =
   getEnvVariable(EnvVariable.FEATURE_FLAG_MULTI_APP_STAKING) === "true"
+export const POSTHOG =
+  getEnvVariable(EnvVariable.FEATURE_FLAG_POSTHOG) === "true" &&
+  supportedChainId === "1"

src/enums/env.ts

@@ -4,4 +4,5 @@ export enum EnvVariable {
   ETH_HOSTNAME_WS = "ETH_HOSTNAME_WS",
   FEATURE_FLAG_TBTC_V2 = "FEATURE_FLAG_TBTC_V2",
   FEATURE_FLAG_MULTI_APP_STAKING = "FEATURE_FLAG_MULTI_APP_STAKING",
+  FEATURE_FLAG_POSTHOG = "FEATURE_FLAG_POSTHOG",
 }

src/utils/getEnvVariable.ts

@@ -16,6 +16,9 @@ const envMap: { [key in EnvVariable]: string } = {
   [EnvVariable.FEATURE_FLAG_MULTI_APP_STAKING]: process.env[
     "REACT_APP_FEATURE_FLAG_MULTI_APP_STAKING"
   ] as string,
+  [EnvVariable.FEATURE_FLAG_POSTHOG]: process.env[
+    "REACT_APP_FEATURE_FLAG_POSTHOG"
+  ] as string,
 }
 
 export const getEnvVariable = (envVar: EnvVariable) => {