"""NAS folder structure per client and project — geen alles-op-een-hoop."""
from __future__ import annotations

import json
import os
import re
from pathlib import Path
from typing import Any, Optional

from app.db import execute, fetch_one

NAS_ROOT = Path(os.getenv("NAS_CLIENTS_ROOT", "/data/nas-clients"))

PROJECT_SUBDIRS = ("photos", "documents", "packaging", "exports", "briefs")

PROJECT_TYPES = [
    {"id": "packaging", "label_nl": "Verpakking & label", "label_en": "Packaging & label", "icon": "📦", "nas_sub": "packaging"},
    {"id": "retail_listing", "label_nl": "Retail listing / schap", "label_en": "Retail listing", "icon": "🏪", "nas_sub": "documents"},
    {"id": "recipe", "label_nl": "Recept & productontwikkeling", "label_en": "Recipe & R&D", "icon": "🍱", "nas_sub": "briefs"},
    {"id": "marketing", "label_nl": "Marketing campagne", "label_en": "Marketing campaign", "icon": "📣", "nas_sub": "exports"},
    {"id": "halal", "label_nl": "Halal certificering", "label_en": "Halal certification", "icon": "☪️", "nas_sub": "documents"},
    {"id": "sourcing", "label_nl": "Sourcing & import", "label_en": "Sourcing & import", "icon": "🚢", "nas_sub": "documents"},
    {"id": "crm", "label_nl": "Klant & partnership", "label_en": "Client & partnership", "icon": "🤝", "nas_sub": "documents"},
    {"id": "research", "label_nl": "Marktonderzoek", "label_en": "Market research", "icon": "🔬", "nas_sub": "briefs"},
    {"id": "general", "label_nl": "Algemeen project", "label_en": "General project", "icon": "📁", "nas_sub": "documents"},
]


def slugify(name: str, max_len: int = 48) -> str:
    s = re.sub(r"[^a-zA-Z0-9]+", "-", (name or "project").strip().lower()).strip("-")
    return (s[:max_len] or "project")


def _write_meta(path: Path, data: dict[str, Any]) -> None:
    path.parent.mkdir(parents=True, exist_ok=True)
    path.write_text(json.dumps(data, indent=2, ensure_ascii=False), encoding="utf-8")


def ensure_client_folder(client_id: int, client_name: str) -> str:
    """Maak NAS-map per klant: clients/{slug}/ met submappen."""
    slug = slugify(client_name)
    root = NAS_ROOT / slug
    for sub in ("projects", "photos", "documents", "inbox"):
        (root / sub).mkdir(parents=True, exist_ok=True)
    meta = {
        "client_id": client_id,
        "client_name": client_name,
        "slug": slug,
        "structure": ["projects", "photos", "documents", "inbox"],
    }
    _write_meta(root / "client.json", meta)
    rel = str(root)
    execute("UPDATE clients SET nas_folder = %s WHERE id = %s", (rel, client_id))
    return rel


def ensure_project_folder(
    project_id: int,
    project_name: str,
    client_id: Optional[int],
    client_name: Optional[str],
    project_type: str = "general",
) -> dict[str, Any]:
    """Projectmap onder klant: clients/{client}/projects/{project}/"""
    client_root: Path | None = None
    if client_id and client_name:
        row = fetch_one("SELECT nas_folder FROM clients WHERE id = %s", (client_id,))
        if row and row.get("nas_folder"):
            client_root = Path(row["nas_folder"])
        else:
            client_root = Path(ensure_client_folder(client_id, client_name))
    else:
        client_root = NAS_ROOT / "_geen-klant"
        client_root.mkdir(parents=True, exist_ok=True)

    proj_slug = f"{project_id}-{slugify(project_name)}"
    proj_root = client_root / "projects" / proj_slug
    for sub in PROJECT_SUBDIRS:
        (proj_root / sub).mkdir(parents=True, exist_ok=True)

    type_info = next((t for t in PROJECT_TYPES if t["id"] == project_type), PROJECT_TYPES[-1])
    _write_meta(
        proj_root / "project.json",
        {
            "project_id": project_id,
            "name": project_name,
            "client_id": client_id,
            "project_type": project_type,
            "folders": list(PROJECT_SUBDIRS),
            "primary_sub": type_info.get("nas_sub", "documents"),
        },
    )

    nas_path = str(proj_root)
    client_rel = str(client_root)
    execute(
        """UPDATE cockpit_projects SET nas_path = %s, nas_client_root = %s, updated_at = NOW() WHERE id = %s""",
        (nas_path, client_rel, project_id),
    )
    return {"nas_path": nas_path, "nas_client_root": client_rel, "project_slug": proj_slug}


def list_types() -> list[dict[str, Any]]:
    return list(PROJECT_TYPES)