#!/bin/bash -e

# Update static files in production.

cd "$(dirname "$0")"/..

if ! which sponge >/dev/null; then
    echo 'Install the moreutils package.' >&2
    exit 1
fi

# Redirect output to a log file (most recent run only)
exec >update-prod-static.log

# Compile Handlebars templates
./tools/node node_modules/.bin/handlebars zephyr/static/templates/*.handlebars \
    --output ./zephyr/static/templates/compiled.js \
    --known if,unless,each,with

# Collect both original and minified files.
#
# We don't delete the old files, because doing so makes the
# running app with PipelineCachedStorage unhappy.  So if you
# remove a static file, you need to manually remove it from
# prod-static/collected on the app servers.
rm -rf prod-static/source-map
mkdir -p prod-static/source-map
./manage.py collectstatic --noinput

# Copy the files we want to expose
rm -rf prod-static/serve-new
mkdir -p prod-static/serve-new
cp -r prod-static/collected/{favicon.ico,robots.txt,html,images,third,min,audio} prod-static/serve-new/

# Prepend the third-party code notice to JavaScript and CSS files.
for f in prod-static/serve-new/min/*.{js,css}; do
    cat zephyr/static/header.txt $f | sponge $f
done

# Sync the new directory to the one nginx actually serves.
# Hopefully this doesn't race too badly for clients loading
# right as a deploy happens.
mkdir -p prod-static/serve
rsync -ar --delete prod-static/serve-new/* prod-static/serve/

# Clean up
rm -rf prod-static/serve-new

# Leave the 'collected' directory around or PipelineCachedStorage
# will fail.