#!/usr/bin/env bash
#MISE description="Validate changelog fragments are flat files in docs/changelog.d/"
# Ensures no fragments end up in subdirectories (e.g. from branch names like feature/foo).
# Towncrier expects flat <name>.<type>.md files, not nested paths.

set -euo pipefail

CHANGELOG_DIR="$(git rev-parse --show-toplevel)/docs/changelog.d"

errors=0
while IFS= read -r -d '' entry; do
  rel="${entry#"$CHANGELOG_DIR/"}"
  if [[ "$rel" == */* ]]; then
    echo "ERROR: changelog fragment in subdirectory: docs/changelog.d/$rel"
    echo "  Move to: docs/changelog.d/$(echo "$rel" | tr '/' '-')"
    errors=$((errors + 1))
  fi
done < <(find "$CHANGELOG_DIR" -name '*.md' -print0)

if [ "$errors" -gt 0 ]; then
  echo ""
  echo "$errors fragment(s) in subdirectories. Towncrier requires flat files in docs/changelog.d/."
  exit 1
fi

echo "All changelog fragments are correctly placed."