#!/usr/bin/env bash
# Scan a repository and classify every asset as skill/command/agent/hook/prompt/MCP.
# Outputs a markdown table of findings plus a list of cross-reference warnings.
#
# Usage: inventory.sh <repo-path>

set -euo pipefail

if [[ $# -lt 1 ]]; then
  echo "Usage: inventory.sh <repo-path>" >&2
  exit 1
fi

ROOT="$(cd "$1" && pwd)"

if [[ ! -d "$ROOT" ]]; then
  echo "Error: $ROOT is not a directory" >&2
  exit 1
fi

# ── classify assets ──────────────────────────────────────────────────────────

declare -a ROWS=()
declare -a CROSS_REFS=()

while IFS= read -r -d '' path; do
  rel="${path#"$ROOT/"}"
  name="$(basename "$path")"
  dir="$(dirname "$rel")"
  parent="$(basename "$dir")"

  # Skip hidden dirs except .claude-plugin and .github
  skip=false
  IFS='/' read -ra parts <<< "$dir"
  for part in "${parts[@]}"; do
    if [[ "$part" == .* && "$part" != ".claude-plugin" && "$part" != ".github" && "$part" != ".agents" ]]; then
      skip=true; break
    fi
  done
  $skip && continue

  asset_type=""

  case "$name" in
    SKILL.md)             asset_type="skill" ;;
    hooks.json)           asset_type="hook" ;;
    .mcp.json)            asset_type="mcp" ;;
    .lsp.json)            asset_type="lsp" ;;
    plugin.json)          asset_type="manifest-plugin" ;;
    marketplace.json)     asset_type="manifest-marketplace" ;;
    *.agent.md)           asset_type="agent-copilot" ;;
    *.md)
      if [[ "$parent" == "agents" ]]; then
        asset_type="agent-claude"
      elif [[ "$parent" == "commands" ]]; then
        asset_type="command"
      elif [[ "$rel" != *"/skills/"* && "$rel" != *"/commands/"* && "$rel" != *"/agents/"* ]]; then
        asset_type="prompt"
      fi
      ;;
  esac

  [[ -n "$asset_type" ]] && ROWS+=("$asset_type|$rel")

  # Check for cross-references in text files
  case "$name" in *.md|*.json|*.sh)
    if grep -q '\.\.\/' "$path" 2>/dev/null; then
      while IFS= read -r line; do
        lineno="${line%%:*}"
        content="${line#*:}"
        CROSS_REFS+=("$rel:$lineno: $content")
      done < <(grep -n '\.\.\/' "$path" 2>/dev/null | head -20)
    fi
    ;;
  esac

done < <(find "$ROOT" -type f -print0 | sort -z)

# ── report ───────────────────────────────────────────────────────────────────

echo "# Asset Inventory: $ROOT"
echo ""
echo "## Assets"
echo ""
echo "| Type | Path |"
echo "|---|---|"
for row in "${ROWS[@]+"${ROWS[@]}"}"; do
  type="${row%%|*}"
  path="${row#*|}"
  echo "| \`$type\` | \`$path\` |"
done | sort

total="${#ROWS[@]}"
echo ""
echo "**Total: $total assets**"
echo ""

# Summary by type
echo "## Summary by type"
echo ""
for row in "${ROWS[@]+"${ROWS[@]}"}"; do
  echo "${row%%|*}"
done | sort | uniq -c | while read -r count type; do
  echo "- \`$type\`: $count"
done

# Cross-reference warnings
echo ""
if [[ ${#CROSS_REFS[@]} -gt 0 ]]; then
  echo "## ⚠️ Cross-reference warnings (${#CROSS_REFS[@]} found)"
  echo ""
  echo "These \`../\` references will break after install-time caching:"
  echo ""
  for ref in "${CROSS_REFS[@]}"; do
    echo "- \`$ref\`"
  done
else
  echo "## Cross-references"
  echo ""
  echo "No \`../\` cross-references found. Safe to proceed with plugin boundaries."
fi