#!/bin/bash

echo "** backblaze b2 custom uploader **"

FILE_TO_UPLOAD=$1
MIME_TYPE=$2
B2_KEY_ID=$3
B2_KEY=$4
SHA1_OF_FILE=$(openssl dgst -sha1 $FILE_TO_UPLOAD | awk '{print $2;}')

b2_authorize_account=$(curl -s 'https://api.backblazeb2.com/b2api/v2/b2_authorize_account' -u "$B2_KEY_ID:$B2_KEY")

apiUrl=$(echo $b2_authorize_account | jq -r '.apiUrl')
B2_TOKEN=$(echo $b2_authorize_account | jq -r '.authorizationToken')
B2_BUCKET_ID=$(echo $b2_authorize_account | jq -r '.bucketId')

if [ -z "$b2_authorize_account" ]; then echo b2_authorize_account is empty; exit 1; fi
if [ -z "$apiUrl" ]; then echo apiUrl is empty; exit 1; fi
if [ -z "$B2_TOKEN" ]; then echo B2_TOKEN is empty; exit 1; fi
if [ -z "$B2_BUCKET_ID" ]; then echo B2_BUCKET_ID is empty; exit 1; fi

UPLOAD_URL=$(curl -s -H "Authorization:$B2_TOKEN" -d '{"bucketId":"$B2_BUCKET_ID"}' $apiUrl/b2api/v2/b2_get_upload_url | jq -r '.uploadUrl')

curl -s -H "Authorization:$B2_TOKEN" -H "X-Bz-File-Name:$FILE_TO_UPLOAD" -H "Content-Type:$MIME_TYPE" -H "X-Bz-Content-Sha1:$SHA1_OF_FILE" -H "X-Bz-Info-Author:${DRONE_COMMIT_AUTHOR}" --data-binary "@$FILE_TO_UPLOAD" $UPLOAD_URL

echo "** done **"