#!/bin/bash

mkdir -p vscode
cd vscode

git init -q
git remote add origin https://github.com/Microsoft/vscode.git

# figure out latest tag by calling MS update API
if [ "$INSIDER" == "1" ]; then
	UPDATE_INFO=$(curl https://update.code.visualstudio.com/api/update/darwin/insider/lol)
    export MS_COMMIT=$(echo $UPDATE_INFO | jq -r '.version')
    export MS_TAG=$(echo $UPDATE_INFO | jq -r '.name')
elif [[ -z "${MS_TAG}" ]]; then
	UPDATE_INFO=$(curl https://update.code.visualstudio.com/api/update/darwin/stable/lol)
    export MS_COMMIT=$(echo $UPDATE_INFO | jq -r '.version')
    export MS_TAG=$(echo $UPDATE_INFO | jq -r '.name')
else
    reference=$( git ls-remote --tags | grep -x ".*refs\/tags\/${MS_TAG}" | head -1 )
    
    if [[ -z "${reference}" ]]; then
        echo "The following tag can't be found: ${MS_TAG}"
        exit 1
    elif [[ "${reference}" =~ ^([[:alnum:]]+)[[:space:]]+refs\/tags\/([0-9]+\.[0-9]+\.[0-9]+)$ ]]; then
        export MS_COMMIT="${BASH_REMATCH[1]}"
        export MS_TAG="${BASH_REMATCH[2]}"
    else
        echo "The following reference can't be parsed: ${reference}"
        exit 1
    fi
fi

echo "Got the MS tag: ${MS_TAG} version: ${MS_COMMIT}"

git fetch --depth 1 origin $MS_COMMIT
git checkout FETCH_HEAD

cd ..

# for GH actions
if [[ $GITHUB_ENV ]]; then
	echo "MS_TAG=$MS_TAG" >> $GITHUB_ENV
	echo "MS_COMMIT=$MS_COMMIT" >> $GITHUB_ENV
fi