#!/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="${ROOT_DIR}/downloads/inshop"
SOURCE_DIR="${ROOT_DIR}/source/inshop"
DATASET_REF="hserdaraltan/deepfashion-inshop-clothes-retrieval"

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

need_cmd kaggle
need_cmd unzip
need_cmd python3

mkdir -p "${DOWNLOAD_DIR}" "${SOURCE_DIR}"

echo "==> Download Inshop zip via Kaggle"
kaggle datasets download "${DATASET_REF}" -p "${DOWNLOAD_DIR}"

ZIP_FILE="$(ls -t "${DOWNLOAD_DIR}"/*.zip 2>/dev/null | head -n 1 || true)"
if [[ -z "${ZIP_FILE}" ]]; then
    echo "No zip file found under ${DOWNLOAD_DIR}" >&2
    exit 1
fi

echo "==> Unzip ${ZIP_FILE} -> ${SOURCE_DIR}"
unzip -o "${ZIP_FILE}" -d "${SOURCE_DIR}"

if [[ ! -d "${SOURCE_DIR}/img_highres" ]]; then
    echo "Missing folder after unzip: ${SOURCE_DIR}/img_highres" >&2
    exit 1
fi

echo "==> Pack Inshop to parquet"
python3 "${SCRIPT_DIR}/process_inshop.py" --overwrite \
    --image-root "${SOURCE_DIR}" \
    --output-root "${ROOT_DIR}"

echo "==> Done"
echo "    zip:    ${ZIP_FILE}"
echo "    source: ${SOURCE_DIR}/img_highres"
echo "    output: ${MVEB_TRAIN_DIR:-${ROOT_DIR}/MVEB-train}/Inshop , ${MVEB_TEST_DIR:-${ROOT_DIR}/MVEB-test}/Inshop"