#!/usr/bin/env bash
# Erzeugt die Skill-Übersicht in README.md zwischen <!-- skills:start --> und <!-- skills:end -->
# neu. Mit --check wird nur geprüft, ob sie aktuell ist (Exit-Code 1, wenn nicht).
# Aufruf: scripts/update-index.sh [--check]
set -euo pipefail
source "$(dirname "$0")/lib.sh"

REPO_WEB="https://git.gundel.dev/dg/claude-skills"
readme="$ROOT/README.md"
check=0
[[ "${1:-}" == "--check" ]] && check=1

if ! grep -q '<!-- skills:start -->' "$readme" || ! grep -q '<!-- skills:end -->' "$readme"; then
  echo "README.md enthält die Marker <!-- skills:start --> / <!-- skills:end --> nicht." >&2
  exit 1
fi

table="$(mktemp)"
trap 'rm -f "$table"' EXIT
{
  first=1
  while IFS= read -r name; do
    [[ -z "$name" ]] && continue
    ver="$(skill_version "$SKILLS_DIR/$name")"
    desc=""
    if fm="$(frontmatter "$SKILLS_DIR/$name/SKILL.md" 2>/dev/null)"; then
      desc="$(fm_value "$fm" description || true)"
    fi
    deeplink=""
    if [[ -f "$SKILLS_DIR/$name/extension/manifest.json" ]]; then
      deeplink="$(python3 - "$SKILLS_DIR/$name/extension/manifest.json" "$name" <<'PY'
import json, base64, sys, urllib.parse, re
man = json.load(open(sys.argv[1], encoding="utf-8"))
name = sys.argv[2]
sk = {"wordcraft-mcp":"wordcraft","gridcraft-mcp":"gridcraft","pdfcraft-mcp":"pdfcraft","figcraft-mcp":"figcraft","vectorcraft-mcp":"vectorcraft","solidcraft-mcp":"solidcraft"}.get(name)
if not sk:
    m = re.match(r"^(.+)-mcp$", name)
    sk = m.group(1) if m else name
cmd = man["server"]["mcp_config"]["command"]
args = []
for a in man["server"]["mcp_config"].get("args") or []:
    s = str(a)
    if s == "${user_config.author}":
        args.append("Claude")
    elif s == "${user_config.read_root}":
        args.append("${userHome}/Documents")
    elif s == "${user_config.write_root}":
        args.append("${userHome}/Documents/Claude")
    else:
        args.append(s)
# Forward slashes; config = transport only (name= is separate).
if len(cmd) >= 3 and cmd[1] == ":" and "\\" in cmd:
    cmd = cmd.replace("\\", "/")
transport = {"command": cmd, "args": args}
b64 = base64.urlsafe_b64encode(json.dumps(transport, separators=(",", ":")).encode()).decode().rstrip("=")
print(f"cursor://anysphere.cursor-deeplink/mcp/install?name={urllib.parse.quote(sk)}&config={b64}")
PY
)"
    fi
    if [[ $first -eq 0 ]]; then
      printf '\n---\n\n'
    fi
    first=0
    python3 -c 'import sys, urllib.parse
name, ver, desc, repo, link = sys.argv[1:]
def md(s):
    out = []
    trans = {"\\": "\\\\", "*": "\\*", "_": "\\_", "`": "\\`", "[": "\\["}
    for ch in s:
        out.append(trans.get(ch, ch))
    return "".join(out)
lead, note = desc.strip(), ""
cut = lead.find(" Verwenden")
if cut > 0:
    note = lead[cut + 1:].strip()
    lead = lead[:cut].strip()
if lead[:1].islower():
    lead = lead[0].upper() + lead[1:]
tag = urllib.parse.quote(f"{name}/v{ver}", safe="")
base = f"{repo}/releases/download/{tag}"
parts = [
    f"[Doku](skills/{name}/README.md)",
    f"[Skill-ZIP]({base}/{name}-v{ver}.zip \"{name}-v{ver}.zip\")",
]
if link:
    parts.append(f"[Erweiterung]({base}/{name}-v{ver}.mcpb \"{name}-v{ver}.mcpb\")")
    parts.append(f"[Cursor-Plugin]({base}/{name}-cursor-v{ver}.zip \"{name}-cursor-v{ver}.zip\")")
    parts.append(f"[Add to Cursor]({link})")
lines = [f"### [{name}](skills/{name}/) · `v{ver}`", "", "> " + md(lead), ""]
if note:
    lines += ["*" + md(note) + "*", ""]
lines.append(" · ".join(parts))
sys.stdout.write("\n".join(lines))
' "$name" "$ver" "$desc" "$REPO_WEB" "$deeplink"
    printf '\n'
  done < <(skill_names)
} > "$table"

new="$(tr -d '\r' < "$readme" | awk -v t="$table" '
  /<!-- skills:start -->/ { print; while ((getline l < t) > 0) print l; skip = 1; next }
  /<!-- skills:end -->/   { skip = 0 }
  !skip { print }')"

if [[ $check -eq 1 ]]; then
  if [[ "$new" != "$(tr -d '\r' < "$readme")" ]]; then
    echo "README.md ist nicht aktuell – scripts/update-index.sh ausführen und committen." >&2
    exit 1
  fi
  echo "README.md ist aktuell."
else
  python3 -c 'import sys; open(sys.argv[1],"w",encoding="utf-8",newline="\n").write(sys.stdin.read())' "$readme" <<< "$new"
  echo "README.md aktualisiert."
fi