#!/usr/bin/env bash

set -eof pipefail

GIT_ROOT=$(cd "${BASH_SOURCE%/*}" && git rev-parse --show-toplevel)

usage() {
    printf "%s is a tool for upgrading status-go to a given version.\n" "$(basename "$0")"
    printf "Usage:\n\n"
    printf "    %s version\n\n" "$(basename "$0")"
    printf "Example:\n\n"
    printf "    %s develop-g12345678\n" "$(basename "$0")"
}

if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
    usage
    exit 1
fi

if [ $# -eq 0 ]; then
    echo "Need to provide a status-go version"
    exit 1
fi

STATUS_GO_REPO="${STATUS_GO_REPO:=status-go}"
STATUS_GO_OWNER="${STATUS_GO_OWNER:=status-im}"
STATUS_GO_VERSION=$1

repoUrl="https://github.com/${STATUS_GO_OWNER}/${STATUS_GO_REPO}"

STATUS_GO_COMMIT_SHA1=$(git ls-remote ${repoUrl} U ${STATUS_GO_VERSION} | cut -f1)

if [[ -z "${STATUS_GO_COMMIT_SHA1}" ]]; then
    echo "Could not find SHA1 for rev ${STATUS_GO_VERSION}, assuming it's a commit."
    STATUS_GO_COMMIT_SHA1="${STATUS_GO_VERSION}"
fi

STATUS_GO_SHA256=$(nix-prefetch-url --unpack ${repoUrl}/archive/${STATUS_GO_VERSION}.zip)

cat << EOF > ${GIT_ROOT}/status-go-version.json
{
    "_comment": "DO NOT EDIT THIS FILE BY HAND. USE 'scripts/update-status-go.sh <tag>' instead",
    "owner": "${STATUS_GO_OWNER}",
    "repo": "${STATUS_GO_REPO}",
    "version": "${STATUS_GO_VERSION}",
    "commit-sha1": "${STATUS_GO_COMMIT_SHA1}",
    "src-sha256": "${STATUS_GO_SHA256}"
}
EOF

echo "SHA-1 for ${STATUS_GO_VERSION} is ${STATUS_GO_COMMIT_SHA1}.
SHA-256 for source archive is ${STATUS_GO_SHA256}
Owner is ${STATUS_GO_OWNER}"