#!/usr/bin/env bash
# Tier 1 — enforces the generator-first rule. Blocks hand-rolled scaffolding
# under packages/ or apps/ via mkdir/cp/touch. Use `pnpm turbo gen <kind>`.

set -euo pipefail

input=$(cat)
cmd=$(printf '%s' "$input" | jq -r '.tool_input.command // ""')

# Match creation of a NEW top-level packages/<name>/ or apps/<name>/ directory.
# Allows working inside an existing package (e.g. `mkdir -p packages/blog/src/foo`).
patterns=(
  'mkdir[[:space:]]+(-p[[:space:]]+)?packages/[a-zA-Z0-9_-]+/?([[:space:]]|$)'
  'mkdir[[:space:]]+(-p[[:space:]]+)?apps/[a-zA-Z0-9_-]+/?([[:space:]]|$)'
  'cp[[:space:]]+-[rR][[:space:]]+packages/[^[:space:]]+[[:space:]]+packages/[a-zA-Z0-9_-]+/?([[:space:]]|$)'
)

for pattern in "${patterns[@]}"; do
  if [[ "$cmd" =~ $pattern ]]; then
    cat >&2 <<EOF
BLOCKED by .claude/hooks/generator-first-nudge.sh

This template enforces "generator-first" — hand-rolled scaffolding under
packages/ or apps/ is forbidden. Use a generator:

  pnpm turbo gen feature              # new vertical feature
  pnpm turbo gen core-package <name>  # optional core (events|realtime|audit|trpc|ui)
  pnpm turbo gen event                # event contract or handler
  pnpm turbo gen job                  # background job
  pnpm turbo gen realtime             # realtime channel or handler
  pnpm turbo gen core-ui-component    # atomic-design UI component

If you're modifying an existing package (e.g. \`mkdir -p packages/blog/src/x\`)
this hook will not block you. If you genuinely need to bypass (e.g. fixing
the generator itself), ask the user to authorize and re-state the intent.

Command: ${cmd}
EOF
    exit 2
  fi
done

exit 0
