"""ContactPerson search provider — queries contactpersons table."""

from __future__ import annotations

import logging
import uuid
from typing import Any

from sqlalchemy import text
from sqlalchemy.ext.asyncio import AsyncSession

from app.plugins.builtins.unified_search.base_provider import BaseSearchProvider

logger = logging.getLogger(__name__)


class ContactPersonSearchProvider(BaseSearchProvider):
    """Search provider for ContactPerson (Ansprechpartner) entities."""

    entity_type = "contactperson"

    async def _search_fts_filtered(
        self,
        db: AsyncSession,
        tsquery: str,
        tenant_id: uuid.UUID,
        limit: int,
        visible_ids: set[uuid.UUID] | None,
    ) -> list[dict[str, Any]]:
        """Full-text search on contactpersons fields."""
        if visible_ids is not None:
            sql = text(
                """
                SELECT cp.*, ts_rank(
                    to_tsvector('pg_catalog.german',
                        coalesce(cp.displayname, '') || ' ' ||
                        coalesce(cp.firstname, '') || ' ' ||
                        coalesce(cp.lastname, '') || ' ' ||
                        coalesce(cp.email, '') || ' ' ||
                        coalesce(cp.function, '') || ' ' ||
                        coalesce(cp.tags, '')
                    ),
                    to_tsquery('pg_catalog.german', :q)
                ) AS rank
                FROM contactpersons cp
                WHERE cp.tenant_id = :tid
                  AND cp.deleted_at IS NULL
                  AND to_tsvector('pg_catalog.german',
                      coalesce(cp.displayname, '') || ' ' ||
                      coalesce(cp.firstname, '') || ' ' ||
                      coalesce(cp.lastname, '') || ' ' ||
                      coalesce(cp.email, '') || ' ' ||
                      coalesce(cp.function, '') || ' ' ||
                      coalesce(cp.tags, '')
                  ) @@ to_tsquery('pg_catalog.german', :q)
                  AND cp.id = ANY(:visible_ids)
                ORDER BY rank DESC
                LIMIT :lim
                """
            )
            result = await db.execute(
                sql,
                {
                    "q": tsquery,
                    "tid": tenant_id,
                    "lim": limit,
                    "visible_ids": list(visible_ids),
                },
            )
        else:
            sql = text(
                """
                SELECT cp.*, ts_rank(
                    to_tsvector('pg_catalog.german',
                        coalesce(cp.displayname, '') || ' ' ||
                        coalesce(cp.firstname, '') || ' ' ||
                        coalesce(cp.lastname, '') || ' ' ||
                        coalesce(cp.email, '') || ' ' ||
                        coalesce(cp.function, '') || ' ' ||
                        coalesce(cp.tags, '')
                    ),
                    to_tsquery('pg_catalog.german', :q)
                ) AS rank
                FROM contactpersons cp
                WHERE cp.tenant_id = :tid
                  AND cp.deleted_at IS NULL
                  AND to_tsvector('pg_catalog.german',
                      coalesce(cp.displayname, '') || ' ' ||
                      coalesce(cp.firstname, '') || ' ' ||
                      coalesce(cp.lastname, '') || ' ' ||
                      coalesce(cp.email, '') || ' ' ||
                      coalesce(cp.function, '') || ' ' ||
                      coalesce(cp.tags, '')
                  ) @@ to_tsquery('pg_catalog.german', :q)
                ORDER BY rank DESC
                LIMIT :lim
                """
            )
            result = await db.execute(
                sql,
                {"q": tsquery, "tid": tenant_id, "lim": limit},
            )
        rows = result.mappings().all()
        return [dict(r) for r in rows]

    async def _search_vector_filtered(
        self,
        db: AsyncSession,
        embedding: list[float],
        tenant_id: uuid.UUID,
        limit: int,
        visible_ids: set[uuid.UUID] | None,
    ) -> list[dict[str, Any]]:
        """Semantic search — contactpersons table has no embedding column yet."""
        return []

    async def get_embedding_text(
        self, db: AsyncSession, entity_id: uuid.UUID, tenant_id: uuid.UUID
    ) -> str:
        """Get text for embedding generation."""
        sql = text(
            """
            SELECT displayname, firstname, lastname, email, function, tags
            FROM contactpersons
            WHERE id = :eid AND tenant_id = :tid
            """
        )
        result = await db.execute(sql, {"eid": entity_id, "tid": tenant_id})
        row = result.mappings().first()
        if not row:
            return ""
        parts = [
            row.get("displayname", ""),
            row.get("firstname", ""),
            row.get("lastname", ""),
            row.get("email", ""),
            row.get("function", ""),
            row.get("tags", ""),
        ]
        return " ".join(str(p) for p in parts if p)

    def to_search_result(self, entity: object) -> dict[str, Any]:
        """Convert contactperson to search result dict."""
        if isinstance(entity, dict):
            displayname = entity.get("displayname", "")
            email = entity.get("email", "") or ""
            entity_id = str(entity.get("id", ""))
            contact_id = str(entity.get("contact_id", "")) if entity.get("contact_id") else ""
        else:
            displayname = getattr(entity, "displayname", "")
            email = getattr(entity, "email", "") or ""
            entity_id = str(getattr(entity, "id", ""))
            contact_id = str(getattr(entity, "contact_id", "")) if getattr(entity, "contact_id", None) else ""
        return {
            "entity_type": self.entity_type,
            "entity_id": entity_id,
            "title": displayname,
            "snippet": email[:200],
            "score": 0.0,
            "data": {"contact_id": contact_id},
        }