lambda

#!/bin/sh
ACTION=${1?"Missing Argument: \"pullsync\" or \"synconly\" or \"pullonly\" should be passed as first argument."}
BRANCH=${2:- $(git symbolic-ref --short HEAD)}

LAMBA_FUNC_NAME=$(git config --local lambda.functionName)

if [ -z "$LAMBA_FUNC_NAME" ]
then
      echo "You should set your LAMBDA FUNCTION NAME in local git config of this repository."
      echo "Usage: git config --local lambda.functionName <YOURLAMBDAFUNCTIONNAME>"
      exit 1;
fi

if (command -v aws2  >/dev/null 2>&1); then 
    AWSCLI=aws2
elif (command -v aws  >/dev/null 2>&1); then 
    AWSCLI=aws
else
    echo "AWS CLI is not installed. Please visit https://docs.aws.amazon.com/cli/latest/userguide/install-cliv2.html"
    exit 1;
fi

beautifyPrint()
{
    [ "top" = ${2:-"top"} ] && echo
    echo $1
    [ "bottom" = ${2:-"bottom"} ] && echo
}

pullFromLambda()
{
    $AWSCLI lambda get-function --function-name $LAMBA_FUNC_NAME --query 'Code.Location' | xargs wget -O $LAMBA_FUNC_NAME.zip
    if [ $? -ne 0 ]
    then 
        beautifyPrint "Failed to Sync with AWS Lambda Function: $LAMBA_FUNC_NAME. Please take a look on AWS Lambda Function: $LAMBA_FUNC_NAME and carry on."  
    else 
        unzip -o -q $LAMBA_FUNC_NAME.zip
        beautifyPrint "SYNCED CODE SUCCESSFULLY with AWS Lambda Function: $LAMBA_FUNC_NAME. Check every changeset choose accordingly and commit." top
        beautifyPrint "If synced code of AWS Lambda Function: $LAMBA_FUNC_NAME is old/unnecessary for latest git, clean it with \"git checkout .\" command." bottom
    fi
    exit 0;
}

case $ACTION in 
    pullsync)
        beautifyPrint "Pulling from BRANCH: ${BRANCH} AND FOLLOWS A SYNC FROM AWS Lambda Function: $LAMBA_FUNC_NAME."
        git pull origin ${BRANCH}
        if [ $? -ne 0 ]
        then 
            echo "Failed to pull from GIT. Try again"  
        else 
            CONFLICTS=$(git ls-files -u | wc -l)
            if [ "$CONFLICTS" -gt 0 ] ;
            then
                beautifyPrint "There is a conflict." top
                beautifyPrint "You should first resolve this conflict and do a mandatory commit." false
                beautifyPrint "After commit, do a mandatory "./lambda pullsync" again or a "./lambda synconly". If don't do this, there won't be any sync with AWS Lambda Function and your code" bottom
                exit 1;
            else 
                beautifyPrint "Starting Syncing with AWS Lambda Function: $LAMBA_FUNC_NAME."
                pullFromLambda
            fi
        fi 
        break ;;

    synconly)
        beautifyPrint "Syncing only from AWS Lambda Function: $LAMBA_FUNC_NAME."
        pullFromLambda
        break ;;

    pullonly|fetch)
        beautifyPrint "Pulling only from BRANCH: ${BRANCH} "
        git pull origin ${BRANCH}
        break ;;

esac
exit 0;