#!/usr/bin/env bash
set -euo pipefail

repository_root=$(cd "$(dirname "$0")/.." && pwd)
dockerfile="$repository_root/docker/tht.Dockerfile"
builder_image=$(awk '$1 == "FROM" && $3 == "AS" && $4 == "build" { print $2; exit }' "$dockerfile")
expected_builder='golang:1.26.5-bookworm@sha256:1ecb7edf62a0408027bd5729dfd6b1b8766e578e8df93995b225dfd0944eb651'

if [[ "$builder_image" != "$expected_builder" ]]; then
  echo "tht builder must pin golang:1.26.5-bookworm by the approved multi-platform digest" >&2
  exit 1
fi

grep -qx 'go 1.26.0' "$repository_root/tools/tht/go.mod"
grep -qx 'toolchain go1.26.5' "$repository_root/tools/tht/go.mod"
grep -Eq '^[[:space:]]*github.com/sirupsen/logrus v1\.9\.1$' "$repository_root/tools/tht/go.mod"
grep -Eq '^[[:space:]]*golang.org/x/sys v0\.47\.0$' "$repository_root/tools/tht/go.mod"

manifest=$(docker buildx imagetools inspect "$builder_image")
printf '%s\n' "$manifest" | grep -Eq 'Platform:[[:space:]]+linux/amd64'
printf '%s\n' "$manifest" | grep -Eq 'Platform:[[:space:]]+linux/arm64'

temporary_output=$(mktemp -d)
trap 'rm -rf "$temporary_output"' EXIT HUP INT TERM
docker build --file "$dockerfile" --output "type=local,dest=$temporary_output" "$repository_root" >/dev/null

test -s "$temporary_output/tht-windows-amd64.exe"
test -s "$temporary_output/tht-darwin-amd64"
test -s "$temporary_output/tht-darwin-arm64"
test -s "$temporary_output/tht-linux-amd64"
test -s "$temporary_output/tht-linux-arm64"

echo "tht build contract passed."