#!/bin/bash
set -e

if [[ -z "${AUTH_AUTHORITY}" ]]; then
    if [[ -z "${AUTH0_DOMAIN}" ]]; then
        echo "AUTH_AUTHORITY or AUTH0_DOMAIN environment variable must be set"
        exit 1
    fi
fi

if [[ -z "${AUTH_CLIENT_ID}" ]]; then
    if [[ -z "${AUTH0_CLIENT_ID}" ]]; then
        echo "AUTH_CLIENT_ID or AUTH0_CLIENT_ID environment variable must be set"
        exit 1
    fi
fi

if [[ -z "${AUTH_AUDIENCE}" ]]; then
    if [[ -z "${AUTH0_AUDIENCE}" ]]; then
        echo "AUTH_AUDIENCE or AUTH0_AUDIENCE environment variable must be set"
        exit 1
    fi
fi

if [[ -z "${AUTH_SUPPORTED_SCOPES}" ]]; then
    if [[ -z "${AUTH0_DOMAIN}" ]]; then
        echo "AUTH_SUPPORTED_SCOPES environment variable must be set"
        exit 1
    fi
fi

if [[ -z "${USE_AUTH0}" ]]; then
    if [[ -z "${AUTH0_DOMAIN}" ]]; then
        echo "USE_AUTH0 environment variable must be set"
        exit 1
    fi
fi

if [[ -z "${NETBIRD_MGMT_API_ENDPOINT}" ]]; then
    echo "NETBIRD_MGMT_API_ENDPOINT environment variable must be set"
    exit 1
fi

export AUTH_AUTHORITY=${AUTH_AUTHORITY:-https://$AUTH0_DOMAIN}
export AUTH_CLIENT_ID=${AUTH_CLIENT_ID:-$AUTH0_CLIENT_ID}
export AUTH_AUDIENCE=${AUTH_AUDIENCE:-$AUTH0_AUDIENCE}
export AUTH_REDIRECT_URI=${AUTH_REDIRECT_URI}
export AUTH_SILENT_REDIRECT_URI=${AUTH_SILENT_REDIRECT_URI}
export USE_AUTH0=${USE_AUTH0:-true}
export AUTH_SUPPORTED_SCOPES=${AUTH_SUPPORTED_SCOPES:-openid profile email api offline_access email_verified}

export NETBIRD_MGMT_API_ENDPOINT=$(echo $NETBIRD_MGMT_API_ENDPOINT | sed -E 's/(:80|:443)$//')
export NETBIRD_MGMT_GRPC_API_ENDPOINT=${NETBIRD_MGMT_GRPC_API_ENDPOINT}
export NETBIRD_HOTJAR_TRACK_ID=${NETBIRD_HOTJAR_TRACK_ID}

REPO="https://github.com/netbirdio/netbird/"
# this command will fetch the latest release e.g. v0.6.3
export NETBIRD_LATEST_VERSION=$(basename $(curl -fs -o/dev/null -w %{redirect_url} ${REPO}releases/latest))
echo "NetBird latest version: ${NETBIRD_LATEST_VERSION}"

# replace ENVs in the config
ENV_STR="\$\$USE_AUTH0 \$\$AUTH_AUDIENCE \$\$AUTH_AUTHORITY \$\$AUTH_CLIENT_ID \$\$AUTH_SUPPORTED_SCOPES \$\$NETBIRD_MGMT_API_ENDPOINT \$\$NETBIRD_MGMT_GRPC_API_ENDPOINT \$\$NETBIRD_LATEST_VERSION \$\$NETBIRD_HOTJAR_TRACK_ID \$\$AUTH_REDIRECT_URI \$\$AUTH_SILENT_REDIRECT_URI"

MAIN_JS=$(find /usr/share/nginx/html/static/js/main.*js)
OIDC_TRUSTED_DOMAINS="/usr/share/nginx/html/OidcTrustedDomains.js"
cp "$MAIN_JS" "$MAIN_JS".copy
envsubst "$ENV_STR" < "$MAIN_JS".copy > "$MAIN_JS"
envsubst "$ENV_STR" < "$OIDC_TRUSTED_DOMAINS".tmpl > "$OIDC_TRUSTED_DOMAINS"
rm "$MAIN_JS".copy