From 0cd9b4280c110a639e13c69f4e82724d9423c26e Mon Sep 17 00:00:00 2001
From: Thomas E Lackey <telackey@bozemanpass.com>
Date: Mon, 6 Nov 2023 21:55:55 -0600
Subject: [PATCH 1/6] Allow for runtime env.

---
 .gitignore             |  3 ++-
 next.config.js         | 15 ++++++++++-----
 package.json           | 11 +++++++----
 scripts/find-env.sh    | 18 ++++++++++++++++++
 scripts/replace-env.sh | 25 +++++++++++++++++++++++++
 5 files changed, 62 insertions(+), 10 deletions(-)
 create mode 100755 scripts/find-env.sh
 create mode 100755 scripts/replace-env.sh

diff --git a/.gitignore b/.gitignore
index b538ae7..c239be4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,6 +11,7 @@
 
 # next.js
 /.next/
+/.next-r/
 /out/
 
 # production
@@ -45,4 +46,4 @@ next-env.d.ts
 /public/sw.js.map
 /public/workbox-*.js.map
 /public/worker-*.js.map
-/public/fallback-*.js
\ No newline at end of file
+/public/fallback-*.js
diff --git a/next.config.js b/next.config.js
index bc3bd17..257ef93 100644
--- a/next.config.js
+++ b/next.config.js
@@ -3,10 +3,15 @@ const withPWA = require('next-pwa')({
   dest: 'public',
 })
 
+const webpack = require('webpack');
+const envjson = require('./.env-list.json');
+
 module.exports = withPWA({
-  env: {
-    CERC_TEST_WEBAPP_CONFIG1: process.env.CERC_TEST_WEBAPP_CONFIG1,
-    CERC_TEST_WEBAPP_CONFIG2: process.env.CERC_TEST_WEBAPP_CONFIG2,
-    CERC_WEBAPP_DEBUG: process.env.CERC_WEBAPP_DEBUG,
-  },
+    webpack: (config) => {
+	config.plugins.push(new webpack.DefinePlugin(
+          envjson.reduce((a, v) => { a[v] = `"CERC_RUNTIME_ENV_${v.split(/\./).pop()}"`; return a; }, {})
+        ));
+        return config;
+    }
 })
+
diff --git a/package.json b/package.json
index 6335967..97d21e2 100644
--- a/package.json
+++ b/package.json
@@ -1,9 +1,11 @@
 {
   "private": true,
   "scripts": {
-    "dev": "next dev",
-    "build": "next build",
-    "start": "next start"
+    "find-env": "scripts/find-env.sh > .env-list.json",
+    "dev": "yarn find-env && next dev",
+    "build": "yarn find-env && next build",
+    "load-env": "scripts/replace-env.sh .next .next-r",
+    "start": "yarn load-env && next start .next-r"
   },
   "dependencies": {
     "next": "latest",
@@ -14,6 +16,7 @@
   "devDependencies": {
     "@types/node": "17.0.4",
     "@types/react": "17.0.38",
-    "typescript": "4.5.4"
+    "typescript": "4.5.4",
+    "webpack": "^5.89.0"
   }
 }
diff --git a/scripts/find-env.sh b/scripts/find-env.sh
new file mode 100755
index 0000000..2394e06
--- /dev/null
+++ b/scripts/find-env.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+TMPF=`mktemp`
+
+
+for d in $(find . -maxdepth 1 -type d | grep -v '\./\.' | grep '/' | cut -d'/' -f2); do
+  egrep "/$d[/$]?" .gitignore >/dev/null 2>/dev/null
+  if [ $? -eq 0 ]; then
+    continue
+  fi
+
+  for f in $(find $d -regex ".*.[tj]sx?$" -type f); do
+    cat $f | tr -s '[:blank:]' '\n' | tr -s '[{},()]' '\n' | egrep -o 'process.env.[A-Za-z0-9_]+' $f >> $TMPF
+  done
+done
+
+cat $TMPF | sort -u | jq  --raw-input .  | jq --slurp .
+rm -f $TMPF
diff --git a/scripts/replace-env.sh b/scripts/replace-env.sh
new file mode 100755
index 0000000..4413778
--- /dev/null
+++ b/scripts/replace-env.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+SRC_DIR=$1
+TRG_DIR=$2
+
+rm -rf $TRG_DIR
+mkdir -p $TRG_DIR
+cp -rp $SRC_DIR $TRG_DIR/
+
+if [ -f ".env" ]; then
+  set -a
+  source .env
+  set +a
+fi
+
+for f in $(find $TRG_DIR -regex ".*.[tj]sx?$" -type f | grep -v 'node_modules'); do
+  for e in $(cat $f | tr -s '[:blank:]' '\n' | tr -s '[{},()]' '\n' | egrep -o '^"CERC_RUNTIME_ENV[^\"]+"$'); do
+    orig_name=$(echo -n $e | sed 's/"//g')
+    cur_name=$(echo -n $orig_name | sed 's/CERC_RUNTIME_ENV_//g')
+    cur_val=$(echo -n "\$${cur_name}" | envsubst)
+    esc_val=$(sed 's/[&/\]/\\&/g' <<<"$cur_val")
+    echo "$cur_name=$cur_val"
+    sed -i "s/$orig_name/$esc_val/g" $f
+  done
+done
-- 
2.45.2


From c8942a1d84aefd1e14acd13b9d5e3b01499e33e1 Mon Sep 17 00:00:00 2001
From: Thomas E Lackey <telackey@bozemanpass.com>
Date: Mon, 6 Nov 2023 21:57:29 -0600
Subject: [PATCH 2/6] ;

---
 next.config.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/next.config.js b/next.config.js
index 257ef93..9f9810b 100644
--- a/next.config.js
+++ b/next.config.js
@@ -13,5 +13,4 @@ module.exports = withPWA({
         ));
         return config;
     }
-})
-
+});
-- 
2.45.2


From e68d207c43333735c8ce1303fdbbb32ba23e0add Mon Sep 17 00:00:00 2001
From: Thomas E Lackey <telackey@bozemanpass.com>
Date: Mon, 6 Nov 2023 22:29:48 -0600
Subject: [PATCH 3/6] Better support for dev

---
 next.config.js | 28 +++++++++++++++++++++-------
 package.json   |  5 +++--
 2 files changed, 24 insertions(+), 9 deletions(-)

diff --git a/next.config.js b/next.config.js
index 9f9810b..0f578c7 100644
--- a/next.config.js
+++ b/next.config.js
@@ -4,13 +4,27 @@ const withPWA = require('next-pwa')({
 })
 
 const webpack = require('webpack');
-const envjson = require('./.env-list.json');
+
+let envMap;
+try {
+  // .env-list.json provides us a list of identifiers which should be replaced at runtime.
+  envMap = require('./.env-list.json').reduce((a, v) => {
+    a[v] = `"CERC_RUNTIME_ENV_${v.split(/\./).pop()}"`;
+    return a;
+  }, {});
+} catch {
+  // If .env-list.json cannot be loaded, we are probably running in dev mode, so use process.env instead.
+  envMap = Object.keys(process.env).reduce((a, v) => {
+    if (v.startsWith('CERC_')) {
+      a[`process.env.${v}`] = JSON.stringify(process.env[v]);
+    }
+    return a;
+  }, {});
+}
 
 module.exports = withPWA({
-    webpack: (config) => {
-	config.plugins.push(new webpack.DefinePlugin(
-          envjson.reduce((a, v) => { a[v] = `"CERC_RUNTIME_ENV_${v.split(/\./).pop()}"`; return a; }, {})
-        ));
-        return config;
-    }
+  webpack: (config) => {
+    config.plugins.push(new webpack.DefinePlugin(envMap));
+    return config;
+  }
 });
diff --git a/package.json b/package.json
index 97d21e2..58a05fd 100644
--- a/package.json
+++ b/package.json
@@ -1,9 +1,10 @@
 {
   "private": true,
   "scripts": {
-    "find-env": "scripts/find-env.sh > .env-list.json",
-    "dev": "yarn find-env && next dev",
     "build": "yarn find-env && next build",
+    "clean": "rm -rf .next* .env-list.json",
+    "dev": "rm -f .env-list.json && next dev",
+    "find-env": "scripts/find-env.sh > .env-list.json",
     "load-env": "scripts/replace-env.sh .next .next-r",
     "start": "yarn load-env && next start .next-r"
   },
-- 
2.45.2


From bd4d564a0d9914ea4a6228414a4605528f89695e Mon Sep 17 00:00:00 2001
From: Thomas E Lackey <telackey@bozemanpass.com>
Date: Mon, 6 Nov 2023 22:37:31 -0600
Subject: [PATCH 4/6] .gitignore

---
 .gitignore | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.gitignore b/.gitignore
index c239be4..a41f98b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,6 +28,7 @@ yarn-error.log*
 
 # local env files
 .env*.local
+.env-list.json
 
 # vercel
 .vercel
-- 
2.45.2


From fd0b4185ddbe0eced33865651cda2eb31e0193ea Mon Sep 17 00:00:00 2001
From: Thomas E Lackey <telackey@bozemanpass.com>
Date: Mon, 6 Nov 2023 22:46:33 -0600
Subject: [PATCH 5/6] Don't clobber env

---
 scripts/replace-env.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/scripts/replace-env.sh b/scripts/replace-env.sh
index 4413778..de5e00d 100755
--- a/scripts/replace-env.sh
+++ b/scripts/replace-env.sh
@@ -8,9 +8,13 @@ mkdir -p $TRG_DIR
 cp -rp $SRC_DIR $TRG_DIR/
 
 if [ -f ".env" ]; then
+  TMPENV=`mktemp`
+  declare -px > $TMPENV
   set -a
   source .env
+  source $TMPENV
   set +a
+  rm -f $TMPENV
 fi
 
 for f in $(find $TRG_DIR -regex ".*.[tj]sx?$" -type f | grep -v 'node_modules'); do
-- 
2.45.2


From f56d1c11261eb18b97a0a75cc77e7fc200a3672c Mon Sep 17 00:00:00 2001
From: Thomas E Lackey <telackey@bozemanpass.com>
Date: Mon, 6 Nov 2023 22:48:53 -0600
Subject: [PATCH 6/6] space

---
 scripts/find-env.sh | 1 -
 1 file changed, 1 deletion(-)

diff --git a/scripts/find-env.sh b/scripts/find-env.sh
index 2394e06..2449d88 100755
--- a/scripts/find-env.sh
+++ b/scripts/find-env.sh
@@ -2,7 +2,6 @@
 
 TMPF=`mktemp`
 
-
 for d in $(find . -maxdepth 1 -type d | grep -v '\./\.' | grep '/' | cut -d'/' -f2); do
   egrep "/$d[/$]?" .gitignore >/dev/null 2>/dev/null
   if [ $? -eq 0 ]; then
-- 
2.45.2