from typing import Optional

from anonymizeip import anonymize_ip
from django.conf import settings
from django.http import HttpResponse
from ipware import get_client_ip
from ninja import Router, Schema
from ninja.errors import ValidationError

from glitchtip.utils import async_call_celery_task

from .authentication import EventAuthHttpRequest, event_auth
from .schema import (
    CSPIssueEventSchema,
    EnvelopeSchema,
    ErrorIssueEventSchema,
    EventIngestSchema,
    EventUser,
    IngestIssueEvent,
    InterchangeIssueEvent,
    IssueEventSchema,
    SecuritySchema,
    TransactionEventSchema,
)
from .tasks import ingest_event, ingest_transaction
from .utils import cache_set_nx

router = Router(auth=event_auth)


class EventIngestOut(Schema):
    event_id: str
    task_id: Optional[str] = None  # For debug purposes only


class EnvelopeIngestOut(Schema):
    id: Optional[str] = None


def get_issue_event_class(event: IngestIssueEvent):
    return ErrorIssueEventSchema if event.exception else IssueEventSchema


def get_ip_address(request: EventAuthHttpRequest) -> Optional[str]:
    """
    Get IP address from request. Anonymize it based on project settings.
    Keep this logic in the api view, we aim to anonymize data before storing
    on redis/postgres.
    """
    project = request.auth
    client_ip, is_routable = get_client_ip(request)
    if is_routable:
        if project.should_scrub_ip_addresses:
            client_ip = anonymize_ip(client_ip)
        return client_ip
    return None


@router.post("/{project_id}/store/", response=EventIngestOut)
async def event_store(
    request: EventAuthHttpRequest,
    payload: EventIngestSchema,
    project_id: int,
):
    """
    Event store is the original event ingest API from OSS Sentry but is used less often
    Unlike Envelope, it accepts only one Issue event.
    """
    if cache_set_nx("uuid" + payload.event_id.hex, True) is False:
        raise ValidationError([{"message": "Duplicate event id"}])

    if client_ip := get_ip_address(request):
        if payload.user:
            payload.user.ip_address = client_ip
        else:
            payload.user = EventUser(ip_address=client_ip)

    issue_event_class = get_issue_event_class(payload)
    issue_event = InterchangeIssueEvent(
        event_id=payload.event_id,
        project_id=project_id,
        organization_id=request.auth.organization_id,
        payload=issue_event_class(**payload.dict()),
    )
    task_result = await async_call_celery_task(ingest_event, issue_event.dict())
    result = {"event_id": payload.event_id.hex}
    if settings.IS_LOAD_TEST:
        result["task_id"] = task_result.task_id
    return result


@router.post("/{project_id}/envelope/", response=EnvelopeIngestOut)
async def event_envelope(
    request: EventAuthHttpRequest,
    payload: EnvelopeSchema,
    project_id: int,
):
    """
    Envelopes can contain various types of data.
    GlitchTip supports issue events and transaction events.
    Ignore other data types.
    Do support multiple valid events
    Make as few io calls as possible. Some language SDKs (PHP) cannot run async code
    and will block while waiting for GlitchTip to respond.
    """
    client_ip = get_ip_address(request)

    header = payload._header
    for item_header, item in payload._items:
        if item_header.type == "event" and isinstance(item, IngestIssueEvent):
            if item.user:
                item.user.ip_address = client_ip
            else:
                item.user = EventUser(ip_address=client_ip)
            issue_event_class = get_issue_event_class(item)
            interchange_event_kwargs = {
                "project_id": project_id,
                "organization_id": request.auth.organization_id,
                "payload": issue_event_class(**item.dict()),
            }
            if header.event_id:
                interchange_event_kwargs["event_id"] = header.event_id
            interchange_event = InterchangeIssueEvent(**interchange_event_kwargs)
            # Faux unique uuid as GlitchTip can accept duplicate UUIDs
            # The primary key of an event is uuid, received
            if cache_set_nx("uuid" + interchange_event.event_id.hex, True) is True:
                await async_call_celery_task(ingest_event, interchange_event.dict())
        elif item_header.type == "transaction" and isinstance(
            item, TransactionEventSchema
        ):
            interchange_event_kwargs = {
                "project_id": project_id,
                "organization_id": request.auth.organization_id,
                "payload": TransactionEventSchema(**item.dict()),
            }
            interchange_event = InterchangeIssueEvent(**interchange_event_kwargs)
            if cache_set_nx("uuid" + interchange_event.event_id.hex, True) is True:
                await async_call_celery_task(
                    ingest_transaction, interchange_event.dict()
                )

    if header.event_id:
        return {"id": header.event_id.hex}
    return {}


@router.post("/{project_id}/security/")
async def event_security(
    request: EventAuthHttpRequest,
    payload: SecuritySchema,
    project_id: int,
):
    """
    Accept Security (and someday other) issue events.
    Reformats event to make CSP browser format match more standard
    event format.
    """
    event = CSPIssueEventSchema(csp=payload.csp_report.dict(by_alias=True))
    if client_ip := get_ip_address(request):
        if event.user:
            event.user.ip_address = client_ip
        else:
            event.user = EventUser(ip_address=client_ip)
    issue_event = InterchangeIssueEvent(
        project_id=project_id,
        organization_id=request.auth.organization_id,
        payload=event.dict(by_alias=True),
    )
    await async_call_celery_task(ingest_event, issue_event.dict(by_alias=True))
    return HttpResponse(status=201)