#!/bin/bash
# Create a fresh, git-initialized sandbox copy of the Eval (os-vault write-behavior) fixture.
# Usage: sandbox <P*-L*|N*-L*> <dest-dir>
#
# <dest>/project — recursive copy of fixture/project, git-inited with one baseline commit.
# <dest>/vault   — recursive copy of fixture/vault (the isolated SecondBrain stand-in).
set -euo pipefail

SCENARIO="${1:?usage: sandbox <scenario> <dest-dir>}"
DEST="${2:?usage: sandbox <scenario> <dest-dir>}"
EVAL_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
FIXTURE_PROJECT="$EVAL_ROOT/fixture/project"
FIXTURE_VAULT="$EVAL_ROOT/fixture/vault"

# Validate scenario against both the run-set and the frozen reserve-set.
if [ ! -f "$EVAL_ROOT/scenarios/${SCENARIO}.md" ] && [ ! -f "$EVAL_ROOT/scenarios-reserve/${SCENARIO}.md" ]; then
  echo "unknown scenario: $SCENARIO (checked scenarios/ and scenarios-reserve/)" >&2
  exit 2
fi

if [ -e "$DEST" ]; then echo "refusing to overwrite existing $DEST" >&2; exit 2; fi
mkdir -p "$DEST"

mkdir -p "$DEST/project"
cp -r "$FIXTURE_PROJECT/." "$DEST/project/"
rm -rf "$DEST/project/.git"

git -C "$DEST/project" init -q
git -C "$DEST/project" add -A
git -C "$DEST/project" -c user.email=eval@local -c user.name=eval commit -qm "fixture baseline"

mkdir -p "$DEST/vault"
cp -r "$FIXTURE_VAULT/." "$DEST/vault/"

echo "$DEST"