"""City / destination depth aggregation (city_details + related content)."""
from __future__ import annotations

from typing import Any

from app.data.city_details_data import (
  CITY_DETAILS_BY_SLUG,
  CONTENT_ITEMS,
  EXTRA_ROUTES,
)
from app.data import community_data
from app.services.pb_repo import q, safe_first, safe_list, use_pb
from app.services.pocketbase import pb
from app.services import community_store


def get_city_detail_record(slug: str) -> dict[str, Any] | None:
  if use_pb():
    row = safe_first("city_details", filter=f"citySlug={q(slug)}")
    if row:
      return {
        "citySlug": row.get("citySlug", slug),
        "guide": row.get("guide") or {},
        "pros": row.get("pros") or {},
        "reviews": row.get("reviews") or {},
        "cost": row.get("cost") or {},
        "people": row.get("people") or {},
        "chat": row.get("chat") or {},
        "photos": row.get("photos") or {},
        "weather": row.get("weather") or {},
        "trends": row.get("trends") or {},
        "demographics": row.get("demographics") or {},
        "relatedContent": row.get("relatedContent") or [],
      }
  return CITY_DETAILS_BY_SLUG.get(slug)


async def get_destination_full(slug: str) -> dict[str, Any] | None:
  city = await pb.get_destination(slug)
  if not city:
    return None

  detail = get_city_detail_record(slug)
  content: list[dict] = []
  if use_pb():
    for item in safe_list("content_items"):
      slugs = item.get("citySlugs") or []
      if slug in slugs and item.get("status", "published") == "published":
        content.append(_public_content(item))
  if not content:
    content = [_public_content(c) for c in CONTENT_ITEMS if slug in (c.get("citySlugs") or [])]

  city_name = city.get("name", "")
  meetups = [
    m for m in community_store.list_meetups(upcoming=True)
    if m.get("destination_slug") == slug or m.get("city") == city_name
  ][:10]
  discussions = [
    d for d in community_store.list_discussions()
    if city_name and (city_name in d.get("title", "") or city_name in d.get("excerpt", ""))
  ][:10]

  return {
    "ok": True,
    "city": city,
    "detail": detail,
    "content": content,
    "meetups": meetups,
    "discussions": discussions,
  }


def _public_content(item: dict) -> dict:
  return {
    "slug": item.get("slug", ""),
    "type": item.get("type", "guide"),
    "title": item.get("title", ""),
    "subtitle": item.get("subtitle") or item.get("subtitleEn") or "",
    "description": item.get("description", ""),
    "targetUrl": item.get("targetUrl", ""),
    "ctaLabel": item.get("ctaLabel", "查看"),
    "citySlugs": item.get("citySlugs") or [],
  }


def list_routes_enriched(destinations: list[dict] | None = None) -> list[dict]:
  dest_by_slug = {d.get("slug"): d for d in (destinations or [])}
  routes: list[dict] = []

  if use_pb():
    for r in safe_list("routes"):
      if r.get("status") and r.get("status") != "published":
        continue
      routes.append(_route_from_pb(r, dest_by_slug))

  if not routes:
    for r in community_data.NOMAD_ROUTES:
      routes.append({
        "id": r.get("id") or r.get("slug", ""),
        "slug": r.get("slug", ""),
        "title": r.get("title", ""),
        "duration_days": r.get("duration_days", 0),
        "budget": r.get("budget", 0),
        "description": r.get("description", ""),
        "stops": r.get("stops") or [],
        "emoji": r.get("emoji", "🗺️"),
        "cities": [dest_by_slug[s] for s in (r.get("stops") or []) if s in dest_by_slug],
      })
    for r in EXTRA_ROUTES:
      if any(x["slug"] == r["slug"] for x in routes):
        continue
      routes.append({
        "id": r["slug"],
        "slug": r["slug"],
        "title": r["title"],
        "duration_days": r.get("durationDays", 0),
        "budget": r.get("budget", 0),
        "description": r.get("description", ""),
        "stops": r.get("citySlugs") or [],
        "emoji": r.get("emoji", "🗺️"),
        "cities": [dest_by_slug[s] for s in (r.get("citySlugs") or []) if s in dest_by_slug],
      })
  return routes


def _route_from_pb(r: dict, dest_by_slug: dict) -> dict:
  slugs = r.get("citySlugs") or []
  return {
    "id": r.get("id") or r.get("slug", ""),
    "slug": r.get("slug", ""),
    "title": r.get("title", ""),
    "duration_days": int(r.get("durationDays") or 0),
    "budget": int(r.get("budget") or 0),
    "description": r.get("description", ""),
    "stops": slugs,
    "emoji": r.get("emoji", "🗺️"),
    "cities": [dest_by_slug[s] for s in slugs if s in dest_by_slug],
  }