"""WordPress REST API Client — Blog-Statistiken und Status."""

import requests
from datetime import datetime, timedelta
from typing import Optional

# REST API Endpoints (CT 101 auf pve-hetzner, über Cloudflare Tunnel)
WP_URL = ""  # Wird aus homelab.conf geladen
WP_USER = ""
WP_PASSWORD = ""


def init(cfg):
    """Initialisierung mit homelab.conf Daten."""
    global WP_URL, WP_USER, WP_PASSWORD
    
    ct_101 = None
    for c in cfg.containers:
        if c.vmid == 101 and c.host == "pve-hetzner":
            ct_101 = c
            break
    
    if not ct_101 or not ct_101.tailscale_ip:
        return False
    
    # WordPress erreichbar über Tailscale IP
    WP_URL = f"http://{ct_101.tailscale_ip}"
    WP_USER = "admin"
    
    # Passwort aus config
    pw = cfg.raw.get("PW_WP_ADMIN", "")
    if pw:
        WP_PASSWORD = pw
        return True
    
    return False


def _request(endpoint: str, method: str = "GET", params: dict = None) -> Optional[dict]:
    """REST API Request mit Basic Auth."""
    try:
        url = f"{WP_URL}/wp-json/wp/v2{endpoint}"
        auth = (WP_USER, WP_PASSWORD)
        timeout = 10
        
        if method == "GET":
            resp = requests.get(url, auth=auth, params=params, timeout=timeout)
        else:
            resp = requests.request(method, url, auth=auth, json=params, timeout=timeout)
        
        resp.raise_for_status()
        return resp.json()
    except Exception as e:
        return None


def check_connectivity() -> bool:
    """Ist WordPress erreichbar?"""
    try:
        if not WP_URL or not WP_PASSWORD:
            return False
        result = _request("/posts?per_page=1")
        return result is not None
    except:
        return False


def get_post_stats(days: int = 1) -> dict:
    """
    Posts-Statistik für einen Tag.
    
    Returns:
        {
            "today": 3,
            "yesterday": 5,
            "this_week": 12,
            "this_month": 45
        }
    """
    try:
        now = datetime.now()
        today_start = now.replace(hour=0, minute=0, second=0, microsecond=0)
        yesterday_start = today_start - timedelta(days=1)
        week_start = today_start - timedelta(days=today_start.weekday())
        month_start = today_start.replace(day=1)
        
        # Alle Posts mit Publish-Datum abfragen (kann viele sein, pagiert)
        posts = []
        page = 1
        while True:
            batch = _request("/posts", params={"per_page": 100, "page": page, "status": "publish"})
            if not batch or len(batch) == 0:
                break
            posts.extend(batch)
            page += 1
            if page > 5:  # Max 500 Posts pro Abfrage
                break
        
        if not posts:
            return {"today": 0, "yesterday": 0, "this_week": 0, "this_month": 0}
        
        today_count = sum(1 for p in posts if datetime.fromisoformat(p["date"].replace("Z", "+00:00")).replace(tzinfo=None) >= today_start)
        yesterday_count = sum(1 for p in posts if yesterday_start <= datetime.fromisoformat(p["date"].replace("Z", "+00:00")).replace(tzinfo=None) < today_start)
        week_count = sum(1 for p in posts if datetime.fromisoformat(p["date"].replace("Z", "+00:00")).replace(tzinfo=None) >= week_start)
        month_count = sum(1 for p in posts if datetime.fromisoformat(p["date"].replace("Z", "+00:00")).replace(tzinfo=None) >= month_start)
        
        return {
            "today": today_count,
            "yesterday": yesterday_count,
            "this_week": week_count,
            "this_month": month_count,
        }
    except Exception as e:
        return {"error": str(e)}


def get_pending_comments() -> int:
    """Wie viele Kommentare warten auf Freigabe?"""
    try:
        comments = _request("/comments", params={"status": "hold", "per_page": 100})
        if comments is None:
            return -1
        return len(comments) if isinstance(comments, list) else 0
    except:
        return -1


def get_top_posts(limit: int = 5) -> list[dict]:
    """
    Top Posts nach Zugriffen (nutzt Matomo-Tracking wenn vorhanden).
    
    Fallback: neueste Posts mit höchster Kommentar-Anzahl.
    
    Returns:
        [
            {"title": "...", "visits": 123, "comments": 5, "url": "..."},
            ...
        ]
    """
    try:
        posts = _request("/posts", params={"per_page": limit, "orderby": "date", "order": "desc", "status": "publish"})
        
        if not posts:
            return []
        
        result = []
        for p in posts:
            result.append({
                "title": p.get("title", {}).get("rendered", "Untitled")[:60],
                "visits": -1,  # Matomo-Integration später
                "comments": p.get("_links", {}).get("replies", [{}])[0].get("count", 0) if "replies" in p.get("_links", {}) else 0,
                "url": p.get("link", ""),
                "date": p.get("date", ""),
            })
        
        return result
    except Exception as e:
        return []


def get_plugin_status() -> dict:
    """
    Plugin-Status (active/inactive).
    
    Returns:
        {
            "total": 15,
            "active": 12,
            "inactive": 3,
            "active_list": ["plugin1", "plugin2", ...],
            "inactive_list": ["plugin4", ...]
        }
    """
    try:
        # Plugins können nur über /wp/v2/plugins abgefragt werden (braucht Admin-Token)
        # Als Fallback: /settings auslesen falls konfiguriert
        plugins = _request("/plugins")
        
        if not plugins:
            return {"error": "Plugin API nicht erreichbar (braucht higher permissions)"}
        
        if isinstance(plugins, dict) and "code" in plugins:
            return {"error": plugins.get("message", "Permission denied")}
        
        active = [p["name"] for p in plugins if p.get("status") == "active"]
        inactive = [p["name"] for p in plugins if p.get("status") != "active"]
        
        return {
            "total": len(plugins),
            "active": len(active),
            "inactive": len(inactive),
            "active_list": active,
            "inactive_list": inactive,
        }
    except:
        return {"error": "Plugins nicht abrufbar"}


def format_overview(cfg) -> str:
    """Kurzer Überblick für /wp Command."""
    if not init(cfg):
        return "❌ WordPress nicht konfiguriert"
    
    if not check_connectivity():
        return "❌ WordPress nicht erreichbar"
    
    lines = ["📝 **WordPress Status (arakavanews.com)**\n"]
    
    stats = get_post_stats(days=1)
    lines.append(f"📊 Posts: heute {stats.get('today', 0)}, diese Woche {stats.get('this_week', 0)}")
    
    pending = get_pending_comments()
    if pending > 0:
        lines.append(f"💬 ⏳ {pending} Kommentare warten auf Freigabe")
    else:
        lines.append(f"💬 Keine pending Kommentare")
    
    top = get_top_posts(limit=3)
    if top:
        lines.append("\n🔝 Top Posts:")
        for p in top:
            lines.append(f"  • {p['title']} ({p['comments']} 💬)")
    
    plugins = get_plugin_status()
    if "error" not in plugins:
        lines.append(f"\n🔌 Plugins: {plugins['active']} aktiv, {plugins['inactive']} inaktiv")
    
    return "\n".join(lines)