#!/bin/bash
set -e

cd $(dirname $0)

source ./version

if ls ../bin/charts-build-scripts 1>/dev/null 2>/dev/null; then
    CURRENT_SCRIPT_VERSION=$(../bin/charts-build-scripts --version | cut -d' ' -f3)
    if [[ "${CURRENT_SCRIPT_VERSION}" == "${CHARTS_BUILD_SCRIPT_VERSION}" ]]; then
        exit 0
    fi
fi

echo "Downloading charts-build-scripts version ${CHARTS_BUILD_SCRIPTS_REPO}@${CHARTS_BUILD_SCRIPT_VERSION}"

rm -rf ../bin
cd ..

mkdir -p bin
OS=$(go version | cut -d' ' -f4 | cut -d'/' -f1)
ARCH=$(go version | cut -d' ' -f4 | cut -d'/' -f2)

if [[ "$OS" == "windows" ]]; then
    BINARY_NAME="charts-build-scripts_${OS}_${ARCH}.exe"
else
    BINARY_NAME="charts-build-scripts_${OS}_${ARCH}"
fi
curl -s -L ${CHARTS_BUILD_SCRIPTS_REPO%.git}/releases/download/${CHARTS_BUILD_SCRIPT_VERSION}/${BINARY_NAME} --output bin/charts-build-scripts

# Fall back to binary name format from old release scheme
if ! [[ -f bin/charts-build-scripts ]] || [[ $(cat bin/charts-build-scripts) == "Not Found" ]]; then 
    echo "Falling back to old binary name format..."
    rm bin/charts-build-scripts; 
    if [[ ${OS} == "linux" ]]; then
        BINARY_NAME=charts-build-scripts
    else
        BINARY_NAME=charts-build-scripts-${OS}
    fi
    curl -s -L ${CHARTS_BUILD_SCRIPTS_REPO%.git}/releases/download/${CHARTS_BUILD_SCRIPT_VERSION}/${BINARY_NAME} --output bin/charts-build-scripts
fi

# If falling back to old binary name format did not work, fail
if ! [[ -f bin/charts-build-scripts ]] || [[ $(cat bin/charts-build-scripts) == "Not Found" ]]; then
    echo "Failed to find charts-build-scripts binary"
    rm bin/charts-build-scripts;
    exit 1
fi

echo "${BINARY_NAME} => ./bin/charts-build-scripts"

chmod +x ./bin/charts-build-scripts
./bin/charts-build-scripts --version