#!/bin/bash
#
# This script will perform the following tasks:
#   1. Remove any old dist files from previous runs.
#   2. Install dependencies for the cdk-solution-helper; responsible for
#      converting standard 'cdk synth' output into solution assets.
#   3. Build and synthesize your CDK project.
#   4. Run the cdk-solution-helper on template outputs and organize
#      those outputs into the /global-s3-assets folder.
#   5. Organize source code artifacts into the /regional-s3-assets folder.
#   6. Remove any temporary files used for staging.
#
# This script should be run from the repo's deployment directory
# cd deployment
# ./build-s3-dist.sh source-bucket-base-name solution-name version-code template-bucket-name
#
# Parameters:
#  - source-bucket-base-name: Name for the S3 bucket location where the template will source the Lambda
#    code from. The template will append '-[region_name]' to this bucket name.
#    For example: ./build-s3-dist.sh solutions my-solution v1.0.0
#    The template will then expect the source code to be located in the solutions-[region_name] bucket
#  - solution-name: name of the solution for consistency
#  - version-code: version of the package
[ "$DEBUG" == 'true' ] && set -x
set -e

# Check to see if input has been provided:
if [ -z "$1" ] || [ -z "$2" ] || [ -z "$3" ]; then
    echo "Please provide all required parameters for the build script"
    echo "For example: ./build-s3-dist.sh solutions trademarked-solution-name v1.0.0"
    exit 1
fi

bucket_name="$1"
solution_name="$2"
solution_version="$3"

# Get reference for all important folders
template_dir="$PWD"
staging_dist_dir="$template_dir/staging"
template_dist_dir="$template_dir/global-s3-assets"
build_dist_dir="$template_dir/regional-s3-assets"
source_dir="$template_dir/../source"

echo "------------------------------------------------------------------------------"
echo "[Init] Remove any old dist files from previous runs"
echo "------------------------------------------------------------------------------"
rm -rf $template_dist_dir
mkdir -p $template_dist_dir

rm -rf $build_dist_dir
mkdir -p $build_dist_dir

rm -rf $staging_dist_dir
mkdir -p $staging_dist_dir

echo "------------------------------------------------------------------------------"
echo "[Init] Install dependencies for the cdk-solution-helper"
echo "------------------------------------------------------------------------------"
cd $template_dir/cdk-solution-helper
npm install --production

echo "------------------------------------------------------------------------------"
echo "Download mediainfo binary for AWS Lambda"
echo "------------------------------------------------------------------------------"
cd $source_dir/mediainfo/
rm -rf bin/*
curl -O https://mediaarea.net/download/binary/mediainfo/20.09/MediaInfo_CLI_20.09_Lambda.zip
unzip MediaInfo_CLI_20.09_Lambda.zip 
mv LICENSE bin/
chmod +x ./bin/mediainfo
rm -r MediaInfo_CLI_20.09_Lambda.zip

echo "------------------------------------------------------------------------------"
echo "[Synth] CDK Project"
echo "------------------------------------------------------------------------------"
# Make sure user has the newest CDK version
npm uninstall -g aws-cdk && npm install -g aws-cdk@2

cd $source_dir/cdk
npm install
cdk synth --output=$staging_dist_dir
if [ $? -ne 0 ]
then
    echo "******************************************************************************"
    echo "cdk-nag found errors"
    echo "******************************************************************************"
    exit 1
fi

cd $staging_dist_dir
rm tree.json manifest.json cdk.out

echo "------------------------------------------------------------------------------"
echo "Run Cdk Helper and update template placeholders"
echo "------------------------------------------------------------------------------"
mv VideoOnDemand.template.json $template_dist_dir/$solution_name.template

node $template_dir/cdk-solution-helper/index

for file in $template_dist_dir/*.template
do
    replace="s/%%BUCKET_NAME%%/$bucket_name/g"
    sed -i -e $replace $file

    replace="s/%%SOLUTION_NAME%%/$solution_name/g"
    sed -i -e $replace $file

    replace="s/%%VERSION%%/$solution_version/g"
    sed -i -e $replace $file
done

echo "------------------------------------------------------------------------------"
echo "[Packing] Source code artifacts"
echo "------------------------------------------------------------------------------"
# ... For each asset.* source code artifact in the temporary /staging folder...
cd $staging_dist_dir
for d in `find . -mindepth 1 -maxdepth 1 -type d`; do
    # Rename the artifact, removing the period for handler compatibility
    pfname="$(basename -- $d)"
    fname="$(echo $pfname | sed -e 's/\.//g')"
    mv $d $fname

    # Zip artifacts from asset folder
    cd $fname
    rm -rf node_modules/
    #rm -rf coverage/
    if [ -f "package.json" ]
    then
        npm install --production
    fi
    zip -rq ../$fname.zip *
    cd ..

    # Copy the zipped artifact from /staging to /regional-s3-assets
    mv $fname.zip $build_dist_dir
done

echo "------------------------------------------------------------------------------"
echo "[Cleanup]  Remove temporary files"
echo "------------------------------------------------------------------------------"
rm -rf $staging_dist_dir
rm -f $template_dist_dir/*.template-e

echo "------------------------------------------------------------------------------"
echo "S3 Packaging Complete"
echo "------------------------------------------------------------------------------"