IFTTT Webhooks Notification (#2416)

* IFTTT webhooks Notification

* use sh instead of bash

* don't save value that is not set

notify/ifttt.sh

@@ -0,0 +1,86 @@
+#!/usr/bin/env sh
+
+#Support ifttt.com webhooks api
+
+#IFTTT_API_KEY="xxxx"
+#IFTTT_EVENT_NAME="yyyy"
+
+#IFTTT_SUBJECT_KEY="value1|value2|value3"      #optional, use "value1" as default
+#IFTTT_CONTENT_KEY="value1|value2|value3"      #optional, use "value2" as default
+
+_IFTTT_AVAIL_MSG_KEYS="value1,value2,value3"
+
+# subject  content statusCode
+ifttt_send() {
+  _subject="$1"
+  _content="$2"
+  _statusCode="$3" #0: success, 1: error 2($RENEW_SKIP): skipped
+  _debug "_subject" "$_subject"
+  _debug "_content" "$_content"
+  _debug "_statusCode" "$_statusCode"
+
+  IFTTT_API_KEY="${IFTTT_API_KEY:-$(_readaccountconf_mutable IFTTT_API_KEY)}"
+  if [ -z "$IFTTT_API_KEY" ]; then
+    IFTTT_API_KEY=""
+    _err "You didn't specify a ifttt webhooks api key IFTTT_API_KEY yet."
+    _err "You can get yours from https://ifttt.com"
+    return 1
+  fi
+  _saveaccountconf_mutable IFTTT_API_KEY "$IFTTT_API_KEY"
+
+  IFTTT_EVENT_NAME="${IFTTT_EVENT_NAME:-$(_readaccountconf_mutable IFTTT_EVENT_NAME)}"
+  if [ -z "$IFTTT_EVENT_NAME" ]; then
+    IFTTT_EVENT_NAME=""
+    _err "You didn't specify a ifttt webhooks event name IFTTT_EVENT_NAME yet."
+    return 1
+  fi
+  _saveaccountconf_mutable IFTTT_EVENT_NAME "$IFTTT_EVENT_NAME"
+
+  IFTTT_SUBJECT_KEY="${IFTTT_SUBJECT_KEY:-$(_readaccountconf_mutable IFTTT_SUBJECT_KEY)}"
+  if [ -z "$IFTTT_SUBJECT_KEY" ]; then
+    IFTTT_SUBJECT_KEY="value1"
+    _info "The IFTTT_SUBJECT_KEY is not set, so use the default value1 as key."
+  elif ! _hasfield "$_IFTTT_AVAIL_MSG_KEYS" "$IFTTT_SUBJECT_KEY"; then
+    _err "The IFTTT_SUBJECT_KEY \"$IFTTT_SUBJECT_KEY\" is not available, should be one of $_IFTTT_AVAIL_MSG_KEYS"
+    IFTTT_SUBJECT_KEY=""
+    return 1
+  else
+    _saveaccountconf_mutable IFTTT_SUBJECT_KEY "$IFTTT_SUBJECT_KEY"
+  fi
+
+  IFTTT_CONTENT_KEY="${IFTTT_CONTENT_KEY:-$(_readaccountconf_mutable IFTTT_CONTENT_KEY)}"
+  if [ -z "$IFTTT_CONTENT_KEY" ]; then
+    IFTTT_CONTENT_KEY="value2"
+    _info "The IFTTT_CONTENT_KEY is not set, so use the default value2 as key."
+  elif ! _hasfield "$_IFTTT_AVAIL_MSG_KEYS" "$IFTTT_CONTENT_KEY"; then
+    _err "The IFTTT_CONTENT_KEY \"$IFTTT_CONTENT_KEY\" is not available, should be one of $_IFTTT_AVAIL_MSG_KEYS"
+    IFTTT_CONTENT_KEY=""
+    return 1
+  else
+    _saveaccountconf_mutable IFTTT_CONTENT_KEY "$IFTTT_CONTENT_KEY"
+  fi
+
+  if [ "$IFTTT_SUBJECT_KEY" = "$IFTTT_CONTENT_KEY" ]; then
+    IFTTT_SUBJECT_KEY=""
+    IFTTT_CONTENT_KEY=""
+    _err "The IFTTT_SUBJECT_KEY must not be same as IFTTT_CONTENT_KEY."
+    return 1
+  fi
+
+  IFTTT_API_URL="https://maker.ifttt.com/trigger/$IFTTT_EVENT_NAME/with/key/$IFTTT_API_KEY"
+
+  _content=$(echo "$_content" | _json_encode)
+  _subject=$(echo "$_subject" | _json_encode)
+  _data="{\"$IFTTT_SUBJECT_KEY\": \"$_subject\", \"$IFTTT_CONTENT_KEY\": \"$_content\"}"
+
+  response="" #just make shellcheck happy
+  if _post "$_data" "$IFTTT_API_URL" "" "POST" "application/json"; then
+    if _contains "$response" "Congratulations"; then
+      _info "IFTTT webhooks event fired success."
+      return 0
+    fi
+  fi
+  _err "IFTTT webhooks event fired error."
+  _err "$response"
+  return 1
+}