#!/usr/bin/env bash
# Fetch the pinned mongodb/specifications test suites.
#
# Pinned, not vendored: the suites are ~175 JSON files that upstream rewrites
# wholesale, and a pinned commit gives the same reproducibility as vendoring
# without putting someone else's test corpus in this repo's history. PLAN D2
# requires the pin; `specifications/` is gitignored.
#
# Bump SPEC_COMMIT deliberately, in its own commit, and re-record the
# scorecard in the same commit -- otherwise a scorecard delta cannot be told
# apart from an upstream change.
set -euo pipefail

SPEC_COMMIT="615e0f9ca5f554614636c098225fbbf1be55565d"
SPEC_REPO="https://github.com/mongodb/specifications.git"

cd "$(dirname "$0")"
DEST="specifications"

if [ -d "$DEST/.git" ] && [ "$(git -C "$DEST" rev-parse HEAD 2>/dev/null || true)" = "$SPEC_COMMIT" ]; then
    echo "specs already at $SPEC_COMMIT"
    exit 0
fi

rm -rf "$DEST"
mkdir -p "$DEST"
cd "$DEST"

# Sparse + depth 1: the full history is ~100 MB and we need two directories.
git init -q .
git remote add origin "$SPEC_REPO"
git config core.sparseCheckout true
mkdir -p .git/info
cat > .git/info/sparse-checkout <<'EOF'
source/crud/tests/
source/unified-test-format/
EOF

echo "fetching $SPEC_COMMIT ..."
git fetch -q --depth 1 origin "$SPEC_COMMIT"
git checkout -q FETCH_HEAD

n=$(find source/crud/tests/unified -name '*.json' | wc -l | tr -d ' ')
echo "specs at $SPEC_COMMIT ($n crud/unified json files)"