PROJECT = myProject
FUNCTION = $(PROJECT)
REGION = ap-southeast-1
ROLE = arn:aws:iam::123456789012:role/service-role/myLambdaRole

createFunction:
	aws lambda create-function \
		--region $(REGION) \
		--function-name $(PROJECT) \
		--zip-file fileb://$(FUNCTION).zip \
		--role $(ROLE) \
		--environment Variables="{HOST='0.0.0.0',PORT=22,USERNAME='user',PASSWORD='password',REMOTEFILE='to/remote/file'}" \
		--handler $(PROJECT).handler \
		--runtime python2.7 \
		--profile <adminuser> \
		--timeout 10 \
		--memory-size 1024

packageDependencies:
	zip -r9 $(FUNCTION).zip $(PROJECT).py
	mkdir -p site-packages
	virtualenv $(FUNCTION)
	. $(FUNCTION)/bin/activate; pip install -r requirements.txt;\
	cd site-packages; cp -r $$VIRTUAL_ENV/lib/python2.7/site-packages/ ./;\
	cp -r $$VIRTUAL_ENV/lib64/python2.7/site-packages/ ./;\
	cd site-packages; zip -r9 ../../$(FUNCTION).zip .

updateFunction:
	aws lambda update-function-code \
		--region $(REGION) \
		--function-name $(PROJECT) \
		--zip-file fileb://$(FUNCTION).zip \
		--publish\
		--profile <adminuser>
manualInvoke:
	aws lambda invoke \
		--invocation-type RequestResponse \
		--function-name $(FUNCTION) \
		--region $(REGION) \
		--profile <adminuser> \
		outputfile.txt

deleteFunction:
	aws lambda delete-function \
		--function-name $(FUNCTION) \
		--region $(REGION) \
		--profile <adminuser>

# Schedule the Lambda Function
# Step 1:
createRule:
	aws events put-rule \
		--region $(REGION) \
		--name $(FUNCTION)-rule \
		--schedule-expression 'cron(0/5 8-17 ? * MON-FRI *)' \
		--profile <adminuser>

# $(ARNRULE) is taken from the put-rule target output and parsed in
# ARNRULE=arn:aws:events:.....
# Step 2:
addPermission:
	aws lambda add-permission \
		--region $(REGION) \
		--function-name $(FUNCTION) \
		--statement-id $(FUNCTION)-event \
		--action 'lambda:InvokeFunction' \
		--principal events.amazonaws.com \
		--source-arn $(ARNRULE) \
		--profile <adminuser>

putTargets:
	aws events put-targets \
		--region $(REGION) \
		--rule $(FUNCTION)-rule \
		--targets file://targets.json \
		--profile <adminuser>

clean:
	rm -r $(FUNCTION)
	rm -r $(FUNCTION).zip
	rm -r site-packages
	rm -r outputfile.txt