#!/usr/bin/env python3
"""Legt eine neue Notiz aus einem Template an — mit korrektem Frontmatter,
korrektem Ordner und stabiler uid.

Von Hand geschriebenes Frontmatter driftet; deshalb dieser Weg. Bestehende
Dateien werden nie überschrieben.

Beispiele:
  python3 scripts/new_note.py --type project-code --title "Auth Service" \\
      --tags go,oidc --summary "OIDC-Auth für die interne Toolchain"
  python3 scripts/new_note.py --type research --title "Rate Limiting Strategien" \\
      --project auth-service
  python3 scripts/new_note.py --type decision --title "Postgres statt Mongo" \\
      --project auth-service
"""

from __future__ import annotations

import argparse
import os
import sys

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
import vaultlib as V  # noqa: E402

SKILL_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
TEMPLATE_DIR = os.path.join(SKILL_DIR, "assets", "templates")

# type -> (Zielpfad-Muster, eigener Ordner?)
TARGETS = {
    "project-code": ("10_Projects/{slug}/index.md", True),
    "template-project": ("40_Templates/project-templates/{slug}/index.md", True),
    "research": ("30_Research/{slug}.md", False),
    "area": ("20_Areas/{slug}.md", False),
    "resource": ("50_Resources/{slug}.md", False),
    "moc": ("20_Areas/{slug}.md", False),
    "decision": ("10_Projects/{project}/decisions/{slug}.md", False),
    "inbox": ("00_Inbox/{slug}.md", False),
}

DEFAULT_STATUS = {
    "project-code": "active", "research": "active", "area": "reference",
    "resource": "reference", "moc": "reference", "decision": "done",
    "template-project": "reference", "inbox": "idea",
}


def main() -> int:
    ap = argparse.ArgumentParser(description="Notiz aus Template anlegen")
    ap.add_argument("--vault", default=".")
    ap.add_argument("--type", required=True, choices=sorted(TARGETS))
    ap.add_argument("--title", required=True)
    ap.add_argument("--summary", default="")
    ap.add_argument("--tags", default="")
    ap.add_argument("--status", default="")
    ap.add_argument("--project", default="", help="Projekt-Slug (Pflicht bei --type decision)")
    ap.add_argument("--out", default="", help="Zielpfad relativ zum Vault überschreiben")
    ap.add_argument("--print-only", action="store_true", help="Inhalt ausgeben statt schreiben")
    args = ap.parse_args()

    vault = os.path.abspath(os.path.expanduser(args.vault))
    slug = V.slugify(args.title)
    pattern, _ = TARGETS[args.type]

    if args.out:
        rel = args.out
    else:
        if "{project}" in pattern and not args.project:
            print("--project ist bei diesem Typ erforderlich", file=sys.stderr)
            return 2
        rel = pattern.format(slug=slug, project=V.slugify(args.project or "misc"))

    dest = os.path.join(vault, rel)
    if os.path.exists(dest) and not args.print_only:
        print(f"Existiert bereits: {rel} — nichts geschrieben.", file=sys.stderr)
        return 1

    tpl_path = os.path.join(TEMPLATE_DIR, f"{args.type}.md")
    if not os.path.exists(tpl_path):
        tpl_path = os.path.join(TEMPLATE_DIR, "resource.md")
    with open(tpl_path, "r", encoding="utf-8") as fh:
        tpl = fh.read()

    today = V.today()
    values = {
        "{{uid}}": f"{today.replace('-', '')}-{slug[:40]}",
        "{{title}}": args.title,
        "{{summary}}": args.summary or "TODO: ein Satz, worum es geht.",
        "{{status}}": args.status or DEFAULT_STATUS.get(args.type, "active"),
        "{{tags}}": ", ".join(V.as_list(args.tags)),
        "{{project}}": args.project,
        "{{date}}": today,
        "{{slug}}": slug,
    }
    content = tpl
    for k, v in values.items():
        content = content.replace(k, v)

    if args.print_only:
        print(content)
        return 0

    os.makedirs(os.path.dirname(dest), exist_ok=True)
    with open(dest, "w", encoding="utf-8") as fh:
        fh.write(content)
    print(rel)
    print("Angelegt. Danach: summary prüfen, Referenzen ergänzen, "
          "build_index.py laufen lassen.")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())