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

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PACKAGE_DIR="$(cd "$SCRIPT_DIR/../.." && pwd)"
OUTPUT_DIR="${OFFLINE_OUTPUT_DIR:-$PACKAGE_DIR/autoinstall/offline-output}"

required=(
  manifest/provenance.env
  manifest/source-commit.txt
  manifest/container-images.txt
  manifest/SHA256SUMS
  payload/source/aipackage/install.sh
  payload/runtime/miniconda.sh
  payload/runtime/ollama-runtime.tar.gz
  payload/models/ollama-models.tar.gz
)

for path in "${required[@]}"; do
  [ -s "$OUTPUT_DIR/$path" ] || {
    echo "ERROR: required offline payload is missing or empty: $path" >&2
    exit 1
  }
done

for directory in payload/apt payload/containers payload/python payload/models/huggingface; do
  find "$OUTPUT_DIR/$directory" -type f -print -quit | grep -q . || {
    echo "ERROR: required offline payload directory is empty: $directory" >&2
    exit 1
  }
done

(
  cd "$OUTPUT_DIR"
  sha256sum -c manifest/SHA256SUMS
)

echo "Offline payload integrity and completeness checks passed."