update scrape script to accpect args

scrape.sh

@@ -1,7 +1,5 @@
 #!/bin/bash
 
-readonly ARGS="$@"
-
 function usage {
   cat <<- EOF
   ./scrape.sh [options]
@@ -13,24 +11,42 @@ function usage {
   OPTIONS:
     -e --event                        Facebook event id. Scrape a single Facebook
                                       event.
+    -h --help -?                      print usage
+    --events                          List of Facebook event ids. See examples for
+                                      format.
     -p --page                         Facebook page id. Scrape all events of a
                                       specific facebook page.
-    -a --pages                        Array of Facebook page ids. This is a space
-                                      seperated list of page ids.
-    -h --help -?                      print usage
+    --pages                           List of Facebook page ids. See examples for
+                                      format.
+  NOTE:
+  Events and pages needs to be public. Private events or pages are not yet
+  supported.
 
   EXAMPLES:
-  Scrape events of a facebook page with id 133713371337
-  ./scrape.sh --page 133713371337
-  ./scrape.sh -p 133713371337
+EOF
+}
 
-  Scrape a facebook event with id 420420420420
-  ./scrape.sh --event 420420420420
-  ./scrape.sh -e 420420420420
+event_ids="";
+pages_ids="";
 
-  Scrape a facebook event with id 123 and all events from page 1323
-  ./scrape.sh --event 123 --page 1323
-EOF
+function scrape_event {
+  local event_id;
+  event_id="$1"
+  if [ "" == "${event_ids}" ]; then
+    event_ids="${event_id}"
+  else
+    event_ids="${event_ids},${event_id}"
+  fi
+}
+
+function scrape_page {
+  local page_id;
+  page_id="$1"
+  if [ "" == "${pages_ids}" ]; then
+     pages_ids="${page_id}"
+  else
+    pages_ids="${pages_ids},${page_id}"
+  fi
 }
 
 function parse_args {
@@ -41,14 +57,13 @@ function parse_args {
   while [[ $# -gt 0 ]]; do
     key="$1"
     case $key in
-      -e|--event)
+      -e|--event|--events)
         shift
-        local event_id;
-        event_id=$1
-        ;;
-      -p|--page)
+        scrape_event "$1"
         ;;
-      -a|--pages)
+      -p|--page|--pages)
+        shift
+        scrape_page "$1"
         ;;
       *)
         usage
@@ -88,6 +103,10 @@ function check_dependencies {
   return 0;
 }
 
+function scrape {
+  exec node scrape.js --event_ids="${event_ids}" --page_ids="${page_ids}"
+}
+
 check_dependencies \
-  && parse_args "${ARGS}" \
+  && parse_args "$@" \
   && scrape