#! /bin/bash

SCRIPT_DIR=$(dirname $0)
SCRIPT_NAME=$(basename $0)


function die() {
    echo "error: $1"
    exit 1
}


# test jq is installed
if ! command -v jq &> /dev/null; then
    echo "jq could not be found"
    echo "sudo apt-get install jq"
    exit 1
fi

# read ~/.config/simple_object_storage/config.json
CONFIG_PATH="${HOME}/.config/simple_object_storage/config.json"
if [ ! -f "${CONFIG_PATH}" ]; then
    echo "config file not found at ${CONFIG_PATH}"
    exit 1
fi
CONFIG=$(cat "${CONFIG_PATH}")

# get the host and port from the config
HOST=$(echo $CONFIG | jq -r '.host')
PORT=$(echo $CONFIG | jq -r '.port')

# extract the first write token from the config
WRITE_TOKEN=$(echo $CONFIG | jq -r '.write_tokens[0]')

BASE_URL="http://${HOST}:${PORT}"

BASE_TAG="autotest"

 # test every action in the README.md file, leaving the system in the same state it was found
 # and print the output of each action

# upload this script as an object
echo "uploading ${SCRIPT_DIR}/${SCRIPT_NAME} to ${BASE_TAG}:test1"
OBJECT_HASH=$(curl -s "${BASE_URL}/upload?token=${WRITE_TOKEN}&labeltag=${BASE_TAG}:test1&filename=${SCRIPT_NAME}" -T ${SCRIPT_DIR}/${SCRIPT_NAME} | jq -r '.hash')
echo "received hash ${OBJECT_HASH}"

# get md5sum of this file
MD5SUM=$(md5sum ${SCRIPT_DIR}/${SCRIPT_NAME} | awk '{print $1}')
echo "md5sum of ${SCRIPT_DIR}/${SCRIPT_NAME} is ${MD5SUM}"

# download the object
echo "downloading ${OBJECT_HASH} to ${SCRIPT_DIR}/${SCRIPT_NAME}.downloaded"
curl -s "${BASE_URL}/object/${OBJECT_HASH}" -o ${SCRIPT_DIR}/${SCRIPT_NAME}.downloaded

# download the object again via the label:tag
echo "downloading ${BASE_TAG}:test1 to ${SCRIPT_DIR}/${SCRIPT_NAME}.downloaded2"
curl -s "${BASE_URL}/object/${BASE_TAG}:test1" -o ${SCRIPT_DIR}/${SCRIPT_NAME}.downloaded2

# get md5sum of the downloaded file
MD5SUM_DOWNLOADED=$(md5sum ${SCRIPT_DIR}/${SCRIPT_NAME}.downloaded | awk '{print $1}')
echo "md5sum of ${SCRIPT_DIR}/${SCRIPT_NAME}.downloaded is ${MD5SUM_DOWNLOADED}"
[ "${MD5SUM}" != "${MD5SUM_DOWNLOADED}" ] && die "md5sums do not match"
MD5SUM_DOWNLOADED2=$(md5sum ${SCRIPT_DIR}/${SCRIPT_NAME}.downloaded2 | awk '{print $1}')
[ "${MD5SUM}" != "${MD5SUM_DOWNLOADED2}" ] && die "md5sums do not match"

rm ${SCRIPT_DIR}/${SCRIPT_NAME}.downloaded1
rm ${SCRIPT_DIR}/${SCRIPT_NAME}.downloaded2

# delete the object tags
echo "deleting tag ${BASE_TAG}:test1"
if ! curl -s "${BASE_URL}/deletetag?token=${WRITE_TOKEN}&labeltag=${BASE_TAG}:test1" | jq -r '.result' | grep -q 'success'; then
    die "failed to delete tag ${BASE_TAG}:test1"
fi

# testing we CANT download via the label:tag
echo "testing we CANT download via the label:tag"
if curl -s "${BASE_URL}/object/${BASE_TAG}:test1" | jq -r '.result' | grep -q 'success'; then
    die "downloaded via the label:tag"
fi

# testing we can still download via the hash
echo "testing we can still download via the hash"
if ! curl -s "${BASE_URL}/object/${OBJECT_HASH}" -o ${SCRIPT_DIR}/${SCRIPT_NAME}.downloaded3 | jq -r '.result' | grep -q 'success'; then
    die "failed to download via the hash"
fi

MD5SUM_DOWNLOADED3=$(md5sum ${SCRIPT_DIR}/${SCRIPT_NAME}.downloaded3 | awk '{print $1}')
[ "${MD5SUM}" != "${MD5SUM_DOWNLOADED3}" ] && die "md5sums do not match"

# delete the downloaded file
rm ${SCRIPT_DIR}/${SCRIPT_NAME}.downloaded3

# delete the object
echo "deleting ${OBJECT_HASH}"
if ! curl -s "${BASE_URL}/deleteobject?token=${WRITE_TOKEN}&hash=${OBJECT_HASH}" | jq -r '.result' | grep -q 'success'; then
    die "failed to delete ${OBJECT_HASH}"
fi

# verify the object is deleted
echo "verifying ${OBJECT_HASH} is deleted"
DELETE_RESPONSE=$(curl -s "${BASE_URL}/object/${OBJECT_HASH}")
echo "delete response: ${DELETE_RESPONSE}"
if ! echo "${DELETE_RESPONSE}" | jq -r '.result' | grep -q 'success'; then
    die "failed to verify ${OBJECT_HASH} is deleted"
fi