deploy.sh

#!/bin/bash

# Variables
PREFIX='local'
SUFFIX='test'
TEMPLATE="main.bicep"
PARAMETERS="main.bicepparam"
RESOURCE_GROUP_NAME="${PREFIX}-rg"
LOCATION="westeurope"
VALIDATE_TEMPLATE=1
USE_WHAT_IF=0
SUBSCRIPTION_NAME=$(az account show --query name --output tsv)
CURRENT_DIR="$(cd "$(dirname "$0")" && pwd)"
ZIPFILE="functionapp.zip"

# Change the current directory to the script's directory
cd "$CURRENT_DIR" || exit

# Validates if the resource group exists in the subscription, if not creates it
echo "Checking if resource group [$RESOURCE_GROUP_NAME] exists in the subscription [$SUBSCRIPTION_NAME]..."
az group show --name $RESOURCE_GROUP_NAME &>/dev/null

if [[ $? != 0 ]]; then
	echo "No resource group [$RESOURCE_GROUP_NAME] exists in the subscription [$SUBSCRIPTION_NAME]"
	echo "Creating resource group [$RESOURCE_GROUP_NAME] in the subscription [$SUBSCRIPTION_NAME]..."

	# Create the resource group
	az group create \
		--name $RESOURCE_GROUP_NAME \
		--location $LOCATION \
		--only-show-errors 1> /dev/null

	if [[ $? == 0 ]]; then
		echo "Resource group [$RESOURCE_GROUP_NAME] successfully created in the subscription [$SUBSCRIPTION_NAME]"
	else
		echo "Failed to create resource group [$RESOURCE_GROUP_NAME] in the subscription [$SUBSCRIPTION_NAME]"
		exit
	fi
else
	echo "Resource group [$RESOURCE_GROUP_NAME] already exists in the subscription [$SUBSCRIPTION_NAME]"
fi

# Validates the Bicep template
if [[ $VALIDATE_TEMPLATE == 1 ]]; then
	if [[ $USE_WHAT_IF == 1 ]]; then
		# Execute a deployment What-If operation at resource group scope.
		echo "Previewing changes deployed by Bicep template [$TEMPLATE]..."
		az deployment group what-if \
			--resource-group $RESOURCE_GROUP_NAME \
			--template-file $TEMPLATE \
			--parameters $PARAMETERS \
			--parameters location=$LOCATION \
			prefix=$PREFIX \
			suffix=$SUFFIX \
			--only-show-errors

		if [[ $? == 0 ]]; then
			echo "Bicep template [$TEMPLATE] validation succeeded"
		else
			echo "Failed to validate Bicep template [$TEMPLATE]"
			exit
		fi
	else
		# Validate the Bicep template
		echo "Validating Bicep template [$TEMPLATE]..."
		output=$(az deployment group validate \
			--resource-group $RESOURCE_GROUP_NAME \
			--template-file $TEMPLATE \
			--parameters $PARAMETERS \
			--parameters location=$LOCATION \
			prefix=$PREFIX \
			suffix=$SUFFIX \
			--only-show-errors)

		if [[ $? == 0 ]]; then
			echo "Bicep template [$TEMPLATE] validation succeeded"
		else
			echo "Failed to validate Bicep template [$TEMPLATE]"
			echo "$output"
			exit
		fi
	fi
fi

# Deploy the Bicep template
echo "Deploying Bicep template [$TEMPLATE]..."
if DEPLOYMENT_OUTPUTS=$(az deployment group create \
	--resource-group $RESOURCE_GROUP_NAME \
	--only-show-errors \
	--template-file $TEMPLATE \
	--parameters $PARAMETERS \
	--parameters location=$LOCATION \
	prefix=$PREFIX \
	suffix=$SUFFIX \
	--query 'properties.outputs' -o json); then
	# Extract only the JSON portion (everything from first { to the end)
	DEPLOYMENT_JSON=$(echo "$DEPLOYMENT_OUTPUTS" | sed -n '/{/,$ p')
	echo "Bicep template [$TEMPLATE] deployed successfully. Outputs:"
	echo "$DEPLOYMENT_JSON" | jq .
	FUNCTION_APP_NAME=$(echo "$DEPLOYMENT_JSON" | jq -r '.functionAppName.value')
	SERVICE_BUS_NAME=$(echo "$DEPLOYMENT_JSON" | jq -r '.serviceBusName.value')
	echo "Deployment details:"
	echo "Function App Name: $FUNCTION_APP_NAME"
	echo "Service Bus Namespace: $SERVICE_BUS_NAME"
else
	echo "Failed to deploy Bicep template [$TEMPLATE]"
	exit 1
fi

if [[ -z "$FUNCTION_APP_NAME" || -z "$SERVICE_BUS_NAME" ]]; then
	echo "Function App Name or Service Bus Namespace is empty. Exiting."
	exit 1
fi

# Print the application settings of the function app
echo "Retrieving application settings for function app [$FUNCTION_APP_NAME]..."
az functionapp config appsettings list \
	--resource-group "$RESOURCE_GROUP_NAME" \
	--name "$FUNCTION_APP_NAME"

# CD into the function app directory
cd ../src || exit

# Remove any existing zip package of the function app
if [ -f "$ZIPFILE" ]; then
	rm "$ZIPFILE"
fi

# Build and publish the function app
echo "Building function app [$FUNCTION_APP_NAME]..."
if dotnet publish -c Release -o ./publish; then
	echo "Function app [$FUNCTION_APP_NAME] built successfully."
else
	echo "Failed to build function app [$FUNCTION_APP_NAME]."
	exit 1
fi

# Create the zip package of the publish output
echo "Creating zip package of the function app..."
cd ./publish || exit
zip -r "../$ZIPFILE" .
cd ..

# Deploy the function app
echo "Deploying function app [$FUNCTION_APP_NAME] with zip file [$ZIPFILE]..."
if az functionapp deployment source config-zip \
	--resource-group "$RESOURCE_GROUP_NAME" \
	--name "$FUNCTION_APP_NAME" \
	--src "$ZIPFILE" 1>/dev/null; then
	echo "Function app [$FUNCTION_APP_NAME] deployed successfully."
else
	echo "Failed to deploy function app [$FUNCTION_APP_NAME]."
	exit 1
fi

# Remove the zip package of the function app
if [ -f "$ZIPFILE" ]; then
	rm "$ZIPFILE"
fi

# Print the list of resources in the resource group
echo "Listing resources in resource group [$RESOURCE_GROUP_NAME]..."
az resource list --resource-group "$RESOURCE_GROUP_NAME" --output table