from __future__ import annotations

from types import SimpleNamespace
from unittest.mock import MagicMock

from asgiref.sync import async_to_sync
from django.test import TestCase

from core.clients.xmpp import XMPPComponent
from core.models import (
    CodexPermissionRequest,
    CodexRun,
    DerivedTask,
    ExternalSyncEvent,
    TaskProject,
    User,
)


class _ApprovalProbe:
    _resolve_request_provider = XMPPComponent._resolve_request_provider
    _approval_event_prefix = XMPPComponent._approval_event_prefix
    _APPROVAL_PROVIDER_COMMANDS = XMPPComponent._APPROVAL_PROVIDER_COMMANDS
    _ACTION_TO_STATUS = XMPPComponent._ACTION_TO_STATUS
    _apply_approval_decision = XMPPComponent._apply_approval_decision
    _approval_list_pending = XMPPComponent._approval_list_pending
    _approval_status = XMPPComponent._approval_status
    _handle_approval_command = XMPPComponent._handle_approval_command
    _gateway_help_lines = XMPPComponent._gateway_help_lines
    _handle_tasks_command = XMPPComponent._handle_tasks_command


class XMPPGatewayApprovalCommandTests(TestCase):
    def setUp(self):
        self.user = User.objects.create_user("xmpp-approval-user", "xmpp-approval@example.com", "x")
        self.project = TaskProject.objects.create(user=self.user, name="Approval Project")
        self.task = DerivedTask.objects.create(
            user=self.user,
            project=self.project,
            epic=None,
            title="Approve me",
            source_service="xmpp",
            source_channel="jews.zm.is",
            reference_code="77",
            status_snapshot="open",
        )
        self.waiting_event = ExternalSyncEvent.objects.create(
            user=self.user,
            task=self.task,
            provider="codex_cli",
            status="waiting_approval",
            payload={},
            error="",
        )
        self.run = CodexRun.objects.create(
            user=self.user,
            task=self.task,
            project=self.project,
            source_service="xmpp",
            source_channel="jews.zm.is",
            status="waiting_approval",
            request_payload={"action": "append_update", "provider_payload": {"task_id": str(self.task.id)}},
            result_payload={},
        )
        self.request = CodexPermissionRequest.objects.create(
            user=self.user,
            codex_run=self.run,
            external_sync_event=self.waiting_event,
            approval_key="ak-xmpp-1",
            summary="Need auth approval",
            requested_permissions={"items": ["workspace_write"]},
            resume_payload={},
            status="pending",
        )
        self.probe = _ApprovalProbe()
        self.probe.log = MagicMock()

    def _run_command(self, text: str) -> list[str]:
        messages = []

        def _sym(value):
            messages.append(str(value))

        handled = async_to_sync(XMPPComponent._handle_approval_command)(
            self.probe,
            self.user,
            text,
            "xmpp-approval-user@zm.is/mobile",
            _sym,
        )
        self.assertTrue(handled)
        self.assertTrue(messages)
        return messages

    def test_approval_approve_command_resolves_request_and_queues_resume(self):
        rows = self._run_command(".approval approve ak-xmpp-1")
        self.assertIn("approved", "\n".join(rows).lower())
        self.request.refresh_from_db()
        self.run.refresh_from_db()
        self.waiting_event.refresh_from_db()
        self.assertEqual("approved", self.request.status)
        self.assertEqual("approved_waiting_resume", self.run.status)
        self.assertEqual("ok", self.waiting_event.status)
        resume = ExternalSyncEvent.objects.filter(
            idempotency_key="codex_approval:ak-xmpp-1:approved"
        ).first()
        self.assertIsNotNone(resume)
        self.assertEqual("pending", resume.status)

    def test_approval_list_pending_and_status(self):
        rows = self._run_command(".approval list-pending all")
        text = "\n".join(rows)
        self.assertIn("pending=1", text)
        self.assertIn("ak-xmpp-1", text)
        status_rows = self._run_command(".approval status ak-xmpp-1")
        self.assertIn("status=pending", "\n".join(status_rows))

    def test_provider_specific_command_rejects_mismatched_key(self):
        rows = self._run_command(".claude approve ak-xmpp-1")
        self.assertIn("approval_key_not_for_provider", "\n".join(rows))
        self.request.refresh_from_db()
        self.assertEqual("pending", self.request.status)


class XMPPGatewayTasksCommandTests(TestCase):
    def setUp(self):
        self.user = User.objects.create_user("xmpp-task-user", "xmpp-task@example.com", "x")
        self.project = TaskProject.objects.create(user=self.user, name="Task Project")
        self.task = DerivedTask.objects.create(
            user=self.user,
            project=self.project,
            epic=None,
            title="Ship CLI",
            source_service="xmpp",
            source_channel="jews.zm.is",
            reference_code="12",
            status_snapshot="open",
        )
        self.probe = _ApprovalProbe()
        self.probe.log = MagicMock()

    def _run_tasks(self, text: str) -> list[str]:
        messages = []

        def _sym(value):
            messages.append(str(value))

        handled = async_to_sync(XMPPComponent._handle_tasks_command)(
            self.probe,
            self.user,
            text,
            _sym,
        )
        self.assertTrue(handled)
        self.assertTrue(messages)
        return messages

    def test_help_contains_approval_and_tasks_sections(self):
        lines = self.probe._gateway_help_lines()
        text = "\n".join(lines)
        self.assertIn(".approval list-pending", text)
        self.assertIn(".tasks list", text)

    def test_tasks_list_show_complete_and_undo(self):
        rows = self._run_tasks(".tasks list open 10")
        self.assertIn("#12", "\n".join(rows))
        rows = self._run_tasks(".tasks show #12")
        self.assertIn("status: open", "\n".join(rows))
        rows = self._run_tasks(".tasks complete #12")
        self.assertIn("completed #12", "\n".join(rows))
        self.task.refresh_from_db()
        self.assertEqual("completed", self.task.status_snapshot)
        rows = self._run_tasks(".tasks undo #12")
        self.assertIn("removed #12", "\n".join(rows))
        self.assertFalse(DerivedTask.objects.filter(id=self.task.id).exists())