"""
Public GraphQL Schema for KYC profile data.

This endpoint provides:
- kycProfileTeaser: public data (no auth required)
- kycProfileFull: full data (requires authentication)

Data is read from MongoDB company_documents collection.
Queries are by KYC Profile UUID.
"""

import graphene
from django.conf import settings
from pymongo import MongoClient

from ..models import KYCProfile, KYCDetailsRussia


def get_mongo_client():
    """Get MongoDB client."""
    if not settings.MONGODB_URI:
        return None
    return MongoClient(settings.MONGODB_URI)


def get_company_documents(inn: str) -> list:
    """Get all documents for a company by INN."""
    client = get_mongo_client()
    if not client:
        return []

    try:
        db = client[settings.MONGODB_DB]
        collection = db["company_documents"]
        return list(collection.find({"inn": inn}))
    finally:
        client.close()


def get_inn_by_profile_uuid(profile_uuid: str) -> str | None:
    """Get INN from KYCProfile by its UUID."""
    try:
        profile = KYCProfile.objects.get(uuid=profile_uuid)
        # Get country details (KYCDetailsRussia) via GenericForeignKey
        if profile.country_details and isinstance(profile.country_details, KYCDetailsRussia):
            return profile.country_details.inn
        return None
    except KYCProfile.DoesNotExist:
        return None


def aggregate_company_data(documents: list) -> dict:
    """Aggregate data from multiple source documents into summary."""
    if not documents:
        return {}

    summary = {
        "inn": None,
        "ogrn": None,
        "name": None,
        "company_type": None,
        "registration_year": None,
        "is_active": True,
        "address": None,
        "director": None,
        "capital": None,
        "activities": [],
        "sources": [],
        "last_updated": None,
    }

    for doc in documents:
        source = doc.get("source", "unknown")
        summary["sources"].append(source)

        data = doc.get("data", {})

        # Extract common fields
        if not summary["inn"]:
            summary["inn"] = doc.get("inn")

        if not summary["ogrn"] and data.get("ogrn"):
            summary["ogrn"] = data["ogrn"]

        if not summary["name"] and data.get("name"):
            summary["name"] = data["name"]

        # Parse company type from name
        if not summary["company_type"] and summary["name"]:
            name = summary["name"].upper()
            if "ООО" in name or "ОБЩЕСТВО С ОГРАНИЧЕННОЙ" in name:
                summary["company_type"] = "ООО"
            elif "АО" in name or "АКЦИОНЕРНОЕ ОБЩЕСТВО" in name:
                summary["company_type"] = "АО"
            elif "ИП" in name or "ИНДИВИДУАЛЬНЫЙ ПРЕДПРИНИМАТЕЛЬ" in name:
                summary["company_type"] = "ИП"
            elif "ПАО" in name:
                summary["company_type"] = "ПАО"

        # Track last update
        collected_at = doc.get("collected_at")
        if collected_at:
            if not summary["last_updated"] or collected_at > summary["last_updated"]:
                summary["last_updated"] = collected_at

    return summary


class CompanyTeaserType(graphene.ObjectType):
    """Public company data (teaser)."""

    company_type = graphene.String(description="Company type: ООО, АО, ИП, etc.")
    registration_year = graphene.Int(description="Year of registration")
    is_active = graphene.Boolean(description="Is company active")
    sources_count = graphene.Int(description="Number of data sources")


class CompanyFullType(graphene.ObjectType):
    """Full company data (requires auth)."""

    inn = graphene.String()
    ogrn = graphene.String()
    name = graphene.String()
    company_type = graphene.String()
    registration_year = graphene.Int()
    is_active = graphene.Boolean()
    address = graphene.String()
    director = graphene.String()
    capital = graphene.String()
    activities = graphene.List(graphene.String)
    sources = graphene.List(graphene.String)
    last_updated = graphene.DateTime()


class PublicQuery(graphene.ObjectType):
    """Public queries - no authentication required."""

    # Query by KYC Profile UUID (preferred - used by frontend)
    kyc_profile_teaser = graphene.Field(
        CompanyTeaserType,
        profile_uuid=graphene.String(required=True),
        description="Get public KYC profile teaser data by UUID",
    )

    kyc_profile_full = graphene.Field(
        CompanyFullType,
        profile_uuid=graphene.String(required=True),
        description="Get full KYC profile data by UUID (requires auth)",
    )

    health = graphene.String()

    def resolve_health(self, info):
        return "ok"

    def resolve_kyc_profile_teaser(self, info, profile_uuid: str):
        """Return public teaser data by KYC Profile UUID."""
        inn = get_inn_by_profile_uuid(profile_uuid)
        if not inn:
            return None

        documents = get_company_documents(inn)
        if not documents:
            return None

        summary = aggregate_company_data(documents)

        return CompanyTeaserType(
            company_type=summary.get("company_type"),
            registration_year=summary.get("registration_year"),
            is_active=summary.get("is_active", True),
            sources_count=len(summary.get("sources", [])),
        )

    def resolve_kyc_profile_full(self, info, profile_uuid: str):
        """Return full KYC profile data by UUID (requires auth)."""
        # Check authentication
        user_id = getattr(info.context, 'user_id', None)
        if not user_id:
            return None  # Not authenticated

        inn = get_inn_by_profile_uuid(profile_uuid)
        if not inn:
            return None

        documents = get_company_documents(inn)
        if not documents:
            return None

        summary = aggregate_company_data(documents)

        return CompanyFullType(
            inn=summary.get("inn"),
            ogrn=summary.get("ogrn"),
            name=summary.get("name"),
            company_type=summary.get("company_type"),
            registration_year=summary.get("registration_year"),
            is_active=summary.get("is_active", True),
            address=summary.get("address"),
            director=summary.get("director"),
            capital=summary.get("capital"),
            activities=summary.get("activities", []),
            sources=summary.get("sources", []),
            last_updated=summary.get("last_updated"),
        )


public_schema = graphene.Schema(query=PublicQuery)