#!/bin/sh

set -eu

script_dir="$(cd "$(dirname "$0")" && echo "$(pwd -P)/")"

usage="Usage: $0 <VERSION_NUMBER> <TARBALL_URL_OR_PATH> [OPAM_REPOSITORY_CLONE_DIR]

Example: $0 11.0 https://gitlab.com/tezos/tezos/-/archive/v11.0/tezos-v11.0.tar.bz2

This script creates an opam-repository with all tezos opam packages.

Default value for OPAM_REPOSITORY_CLONE_DIR is 'opam-repository'.

TARBALL_URL_OR_PATH is the URL (OR PATH) to put in opam files.  The
script downloads the tarball (if necessary) and computes sha256 and
sha512 checksums for you."

version="${1:-}"
tarball="${2:-}"
opam_dir="${3:-opam-repository}"

if [ -z "$version" ] ; then
    echo "$usage"
    exit 1
fi

if [ -z "$tarball" ] ; then
    echo "$usage"
    exit 1
fi

log () {
    echo '\e[1m'"$1"'\e[0m'
}

if [ -d "$opam_dir" ] ; then
    log "$opam_dir exists"
else
    log "Error: $opam_dir does not exists or is not a directory"
    exit 1
fi

tarball_copy=$(mktemp tezos_tarball.XXXXXXXX --tmpdir)

clean_tarball() {
    log "Cleaning up..."
    rm -f "$tarball_copy"
}
trap clean_tarball EXIT

if [ -f "$tarball" ] ; then
    cp "$tarball" "$tarball_copy"
elif [ -d "$tarball" ] ; then
    tarball=$(realpath "$tarball")
    log "using directory '$tarball' as url"
    rm -f "$tarball_copy"
else
    log "Downloading tarball from $tarball..."
    curl "$tarball" --output "$tarball_copy"
fi

if [ -f "$tarball_copy" ] ; then
    log "Hashing tarball..."
    sha256=$(sha256sum "$tarball_copy" | cut -d ' ' -f 1)
    log "SHA256: $sha256"
    sha512=$(sha512sum "$tarball_copy" | cut -d ' ' -f 1)
    log "SHA512: $sha512"
else
    sha256=""
    sha512=""
fi

log "Generating opam files for $version..."
cd "$script_dir"/..
make -C manifest manifest
./manifest/manifest \
    --packages-dir "$opam_dir/packages" \
    --url "$tarball" \
    --sha256 "$sha256" \
    --sha512 "$sha512" \
    --release "$version"