Script for setting up grunt for multiple theme

[sdouma]

Here is a script for setting up multiple themes
disclaimer: code without warranty, test first, modify as needed.

echo "Confirming n98-magerun2 is installed..."
bin/n98-magerun2 > /dev/null 2>&1

# Fetch all distinct theme paths configured in core_config_data
DEFAULT_THEME_ID="select value from core_config_data where path = 'design/theme/theme_id'"
THEME_PATH="select theme_path from theme where theme_id in ($DEFAULT_THEME_ID);"
VENDOR_THEMES=$(bin/n98-magerun2 db:query "$THEME_PATH" | cut -d$'\r' -f1)
LOCALE_CODE=$(bin/magento config:show general/locale/code | cut -d$'\r' -f1 | sed 's/ *$//g')

# Initialize JS content
GEN_THEME_JS="var fs = require('fs'); var util = require('util'); var theme = require('./dev/tools/grunt/configs/themes');"

# Process each VENDOR_THEME and append to JS content
IFS=$'\n' # Set the Internal Field Separator to new line
for VENDOR_THEME in $VENDOR_THEMES; do
    if [[ -z "$VENDOR_THEME" ]]; then
        continue
    fi

    THEME=$(echo "$VENDOR_THEME" | cut -d'/' -f2)
    GEN_THEME_JS+="
theme['$THEME'] = {
    area: 'frontend',
    name: '$VENDOR_THEME',
    locale: '$LOCALE_CODE',
    files: [
        'css/styles-m',
        'css/styles-l'
    ],
    dsl: 'less'
};"
done
unset IFS # Reset the Internal Field Separator

# Finalize JS content and write to file
GEN_THEME_JS+="fs.writeFileSync('./dev/tools/grunt/configs/local-themes.js', '\'use strict\';\\nmodule.exports = ' + util.inspect(theme), 'utf-8');"

bin/node -e "$GEN_THEME_JS"

# Create files from sample files if they do not yet exist
test -f src/package.json || cp src/package.json.sample src/package.json
test -f src/Gruntfile.js || cp src/Gruntfile.js.sample src/Gruntfile.js
test -f src/grunt-config.json || cp src/grunt-config.json.sample src/grunt-config.json

# Disable grunt-contrib-jasmine on ARM processors (incompatible)
if [ "$(uname -m)" == "arm64" ]; then
    sed -e 's/"grunt-contrib-jasmine": "[~.0-9]*",//' src/package.json > package.json \
      && mv package.json src/package.json
fi

# Enable these custom files on compose.dev.yaml so custom updates are persisted
sed -e 's/grunt-config.json.sample/grunt-config.json/' compose.dev.yaml > compose.dev.yaml.updated \
 && mv compose.dev.yaml.updated compose.dev.yaml
sed -e 's/Gruntfile.js.sample/Gruntfile.js/' compose.dev.yaml > compose.dev.yaml.updated \
 && mv compose.dev.yaml.updated compose.dev.yaml
sed -e 's/package.json.sample/package.json/' compose.dev.yaml > compose.dev.yaml.updated \
 && mv compose.dev.yaml.updated compose.dev.yaml
bin/restart app phpfpm

bin/npm install ajv@^5.0.0 --save
bin/npm install

# Rest of your script for grunt tasks and npm installs
# ...