import uuid
from repositories.pocketbase_client import pb_client
from repositories.repo_config import USE_MOCK_REPOSITORIES

COLLECTION = 'tenants'


class TenantRepository:
    """
    Data access for the `tenants` collection. No business logic — callers
    (services) decide what a missing tenant or inactive status means.
    """

    def get_by_domain(self, domain):
        """
        Returns the tenant record matching domain, or None.

        Data flow:
          domain → PocketBase filter `domain = "{domain}"` →
          first matching record returned, or None
        """
        safe_domain = domain.replace('"', '\\"')
        return pb_client.get_first(COLLECTION, f'domain = "{safe_domain}"')

    def get_by_id(self, tenant_id):
        """Returns a tenant record by id, or None."""
        return pb_client.get_one(COLLECTION, tenant_id)

    def get_by_stripe_customer_id(self, stripe_customer_id):
        """Returns the tenant matching a Stripe customer id — used by the Stripe webhook handler."""
        safe_id = stripe_customer_id.replace('"', '\\"')
        return pb_client.get_first(COLLECTION, f'stripe_customer_id = "{safe_id}"')

    def create(self, data):
        """Creates a tenant record and returns it."""
        return pb_client.create(COLLECTION, data)

    def update(self, tenant_id, data):
        """Patches a tenant record and returns the updated record."""
        return pb_client.update(COLLECTION, tenant_id, data)

    def delete(self, tenant_id):
        """Hard-deletes a tenant record — GDPR Article 17 erasure only, never used in normal operation."""
        return pb_client.delete(COLLECTION, tenant_id)


class MockTenantRepository:
    """In-memory stand-in for TenantRepository — same interface, no PocketBase dependency."""

    def __init__(self):
        self._records = {}

    def get_by_domain(self, domain):
        return next((r for r in self._records.values() if r.get('domain') == domain), None)

    def get_by_id(self, tenant_id):
        return self._records.get(tenant_id)

    def get_by_stripe_customer_id(self, stripe_customer_id):
        return next((r for r in self._records.values() if r.get('stripe_customer_id') == stripe_customer_id), None)

    def create(self, data):
        record_id = data.get('id') or str(uuid.uuid4())
        record = {'id': record_id, **data}
        self._records[record_id] = record
        return record

    def update(self, tenant_id, data):
        if tenant_id not in self._records:
            return None
        self._records[tenant_id] = {**self._records[tenant_id], **data}
        return self._records[tenant_id]

    def delete(self, tenant_id):
        return self._records.pop(tenant_id, None) is not None


tenant_repository = MockTenantRepository() if USE_MOCK_REPOSITORIES else TenantRepository()