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

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# Workspace root containing train/ and test/ outputs; override via MVEB_ROOT.
ROOT_DIR="${MVEB_ROOT:-$(cd "${SCRIPT_DIR}/../../.." && pwd)}"
DOWNLOAD_DIR="${ROOT_DIR}/downloads/product1m"
SOURCE_DIR="${ROOT_DIR}/source/product1m"
REPO_DIR="${DOWNLOAD_DIR}/Product1M"
REPO_URL="https://github.com/zhanxlin/Product1M.git"
SPLIT_JSON="${SCRIPT_DIR}/test_split.json"
LOG_FILE="${DOWNLOAD_DIR}/download.log"

need_cmd() {
    command -v "$1" >/dev/null 2>&1 || {
        echo "Missing command: $1" >&2
        exit 1
    }
}

need_cmd git
need_cmd python3

mkdir -p "${DOWNLOAD_DIR}" "${SOURCE_DIR}/test" "${SOURCE_DIR}/gallery"

echo "==> Clone Product1M metadata repo -> ${REPO_DIR}"
if [[ -d "${REPO_DIR}/.git" ]]; then
    git -C "${REPO_DIR}" pull --ff-only
else
    git clone "${REPO_URL}" "${REPO_DIR}"
fi

echo "==> Download images listed in ${SPLIT_JSON}"
python3 "${SCRIPT_DIR}/download.py" \
    --split-json "${SPLIT_JSON}" \
    --repo-dir "${REPO_DIR}" \
    --source-dir "${SOURCE_DIR}" \
    --log-file "${LOG_FILE}"

python3 "${SCRIPT_DIR}/process_product1m.py" --overwrite \
    --split-json "${SPLIT_JSON}" \
    --image-root "${SOURCE_DIR}" \
    --repo-dir "${REPO_DIR}" \
    --output-root "${ROOT_DIR}"

echo "==> Done"
echo "    repo:   ${REPO_DIR}"
echo "    source: ${SOURCE_DIR}"