First pass at init and push

bin/gcs-helper.sh

@@ -0,0 +1,35 @@
+#!/bin/bash -e
+COMMAND=$1
+
+case $COMMAND in
+init)
+  BUCKET=$2
+  if [[ -z "$2" ]];then
+    echo "Please provide a bucket URL in the format gs://BUCKET"
+    exit 1
+  else
+    gsutil cp -n $HELM_PLUGIN_DIR/etc/index.yaml $BUCKET
+    echo "Repository initialized..."
+    exit 0
+  fi
+  ;;
+push)
+  CHART_PATH=$2
+  BUCKET=$3
+  TMP_DIR=$(mktemp -d)
+  TMP_REPO=$TMP_DIR/repo
+  OLD_INDEX=$TMP_DIR/old-index.yaml
+
+  gsutil cat $BUCKET/index.yaml > $OLD_INDEX
+  mkdir $TMP_REPO
+  cp $CHART_PATH $TMP_REPO
+  helm repo index --merge $OLD_INDEX --url $BUCKET $TMP_REPO
+  gsutil cp $TMP_REPO/index.yaml $BUCKET
+  gsutil cp $TMP_REPO/$(basename $CHART_PATH) $BUCKET
+  echo "Repository initialized..."
+  ;;
+*)
+  # TODO turn this into usage()
+  echo "Please provide a command."
+  ;;
+esac

bin/gcs-repo.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+REPO=$4
+gsutil cat $REPO
+exit 0

etc/index.yaml

@@ -0,0 +1 @@
+apiVersion: v1

plugin.yaml

@@ -1,11 +1,11 @@
 name: "gcs"
 version: "0.1.0"
-usage: "The plugin allows to use gcs protocol to upload, fetch charts and to work with repositories."
+usage: "This plugin allows to use gcs protocol to upload, fetch charts and to work with repositories."
 description: |-
   Provides Google Cloud Storage protocol support.
   https://github.com/viglesiasce/helm-gcs
-command: "$HELM_PLUGIN_DIR/bin/gcs.sh"
+command: "$HELM_PLUGIN_DIR/bin/gcs-helper.sh"
 downloaders:
-- command: "bin/gcs.sh"
+- command: "bin/gcs-repo.sh"
   protocols:
-    - "gcs"
+    - "gs"