[NEW] Config hooks for snap

.snapcraft/resources/Caddyfile

@@ -1,5 +1,5 @@
-http://:8080
-proxy / localhost:3000 {
+_site-url_
+proxy / localhost:_port_ {
   websocket
   transparent
 }

.snapcraft/resources/initcaddy

@@ -1,3 +1,38 @@
-#!/bin/sh
-cp $SNAP/bin/Caddyfile  $SNAP_DATA/Caddyfile
-echo "Replace $SNAP_DATA/Caddyfile with your own to customize reverse proxy" 
+#!/bin/bash
+
+# Config options for Caddyfile
+#options="site path port"
+options="site-url port"
+
+refresh_opt_in_config() {
+# replace an option inside the config file.
+    opt=$1
+    value="$2"
+    if $(grep -q "_${opt}_" $Caddyfile); then
+        sed "s,_${opt}_,$value," $Caddyfile 2>/dev/null > ${Caddyfile}.new
+        mv -f ${Caddyfile}.new $Caddyfile 2>/dev/null
+    else
+        echo "Fail to update $opt in Caddyfile" 
+    fi
+}
+
+create_caddyfile(){
+# Copy template to config Caddyfile
+cp $SNAP/bin/Caddyfile $SNAP_DATA/Caddyfile
+}
+
+update_caddyfile(){
+# Config file path for Caddyfile
+Caddyfile=$SNAP_DATA/Caddyfile
+
+# Iterate through the config options array
+for opt in $options
+    do
+    # Use snapctl to get the value registered by the snap set command
+    refresh_opt_in_config $opt $(snapctl get $opt)
+done
+}
+
+create_caddyfile
+update_caddyfile
+

.snapcraft/resources/startRocketChat

@@ -16,11 +16,17 @@ function start_rocketchat {
 	export NODE_ENV=production
 	export BABEL_CACHE_DIR=/tmp
 	export ROOT_URL=http://localhost
-	export PORT=3000
-	export MONGO_URL=mongodb://localhost:27017/parties
-	export MONGO_OPLOG_URL=mongodb://localhost:27017/local
+        export PORT="$(snapctl get port)"
+        export MONGO_URL="$(snapctl get mongo-url)"
+        export MONGO_OPLOG_URL="$(snapctl get mongo-oplog-url)"
 	export Accounts_AvatarStorePath=$SNAP_COMMON/uploads
 
+	for filename in $SNAP_COMMON/*.env; do
+          while read env_var; do
+  	    export "$env_var"
+          done < $filename
+	done
+
 	node $SNAP/main.js
 }
 

.snapcraft/snap/hooks/configure

@@ -0,0 +1,81 @@
+#!/bin/bash
+
+# Obtain siteurl value
+siteurl="$(snapctl get site-url)"
+# Validate it
+#siteurl_regex='^https?:\/\/([0-9A-Za-z\.-]+){1,}(\.[a-z\.]{2,6})?([\/\da-z\.-]+)?$'
+siteurl_regex='^https?:\/\/([0-9A-Za-z\.-]+){1,}(\.[a-z\.]{2,6})?$'
+if ! [[ $siteurl =~ $siteurl_regex ]] ; then
+    echo "\"$siteurl\" is not a valid url" >&2
+    exit 1
+#else
+#  if [[ $siteurl =~ ^http: ]] && [[ $siteurl =~ ^http:\/\/([0-9A-Za-z\.-]+){1,}?(\.[a-z\.]{2,6})?\/([\/\da-z\.-]+){1,}$ ]]; then
+#    path=${siteurl#http://*/}
+#    site=${siteurl#"http://"}
+#    site=${site%%/*}
+#    site=http://$site
+#  elif [[ $siteurl =~ ^https: ]] && [[ $siteurl =~ ^https:\/\/([0-9A-Za-z\.-]+){1,}?(\.[a-z\.]{2,6})?\/([\/\da-z\.-]+){1,}$ ]]; then
+#    path=${siteurl#https://*/}
+#    site=${siteurl#"https://"}
+#    site=${site%%/*}
+#    site=https://$site
+#  else
+#    path=""
+#    site=$siteurl
+#  fi
+#  snapctl set path=$path
+#  snapctl set site=$site
+fi
+
+# Obtain port value
+port="$(snapctl get port)"
+# Validate it
+port_regex='^([0-9]{1,4}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5])$'
+if ! [[ $port =~ $port_regex ]]; then
+    echo "\"$port\" is not a valid port" >&2
+    exit 1
+fi
+
+# Obtain mongourl value
+mongourl="$(snapctl get mongo-url)"
+# Validate it
+mongourl_regex='^mongodb:\/\/([0-9A-Za-z\.-]+){1,}(\.[a-z\.]{2,6})?:([0-9]{2,5})?\/parties$'
+if ! [[ $mongourl =~ $mongourl_regex ]] ; then
+    echo "\"$mongourl\" is not a valid url" >&2
+    exit 1
+fi
+
+
+# Obtain mongooplogurl value
+mongooplogurl="$(snapctl get mongo-oplog-url)"
+# Validate it
+mongooplogurl_regex='^mongodb:\/\/([0-9A-Za-z\.-]+){1,}(\.[a-z\.]{2,6})?:([0-9]{2,5})?\/local$'
+if ! [[ $mongooplogurl =~ $mongooplogurl_regex ]] ; then
+    echo "\"$mongooplogurl\" is not a valid url" >&2
+    exit 1
+fi
+
+# Obtain site protocol
+https="$(snapctl get https)"
+# Validate it
+https_regex='((enable)|(disable))'
+if ! [[ $https =~ $https_regex ]]; then
+    echo "\"$https\" should be enable or disable" >&2
+    exit 1
+else
+  if [[ $https == enable ]] && [[ $siteurl =~ ^http: ]]; then
+    echo "Error: You enabled https but your site URL starts with http, disabling https ..."
+    snapctl set https=disable
+    exit 1
+  elif [[ $https == enable ]] && [[ $siteurl =~ ^https: ]]; then
+    domain=${siteurl#"https://"}
+    domain=${domain%%/*}
+    pubip=$(dig $domain |grep -A1 ";; ANSWER SECTION:" |tail -1 | awk '{print $5}')
+    if ! [ -z "$pubip" ]; then
+      echo "Error: Can't resove DNS query for $domain, check your DNS configuration, disabling https ..."
+      snapctl set https=disable
+      exit 1
+    fi
+  fi
+fi
+

.snapcraft/snap/hooks/install

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# Initialize the SITE_URL (ROOT_URL) to a default
+snapctl set site-url=http://localhost
+
+# Initialize the PORT to a default
+snapctl set port=3000
+
+# Initialize the MONGO_URL to a default
+snapctl set mongo-url=mongodb://localhost:27017/parties
+
+# Initialize the MONGO_OPLOG_URL to a default
+snapctl set mongo-oplog-url=mongodb://localhost:27017/local
+
+# Initialize the protocol to a default
+snapctl set https=disable

.snapcraft/snapcraft.yaml → .snapcraft/snap/snapcraft.yaml

@@ -22,7 +22,7 @@ apps:
         daemon: simple
         plugs: [network, network-bind]
     rocketchat-caddy:
-        command: env LC_ALL=C caddy -conf=$SNAP_DATA/Caddyfile -host=localhost:8080
+        command: env LC_ALL=C caddy -conf=$SNAP_DATA/Caddyfile
         daemon: simple
         plugs: [network, network-bind]
     mongo: