"""
Regression tests for KIN-097:
  Tasks should start based on the review/auto toggle state, not independently.

Root causes fixed:
  (1) load() now calls loadMode() after reload — toggle syncs with DB
  (2) runTask() now patches execution_mode before running — task always gets
      the current toggle state, not a stale value from DB

Backend regression:
  - task.execution_mode=auto_complete → pipeline auto-approves (status=done)
  - task.execution_mode=review → pipeline does NOT auto-approve (status=review),
    even if project.execution_mode=auto_complete
  - get_effective_mode uses task-level execution_mode with higher priority than project
"""

import json
import pytest
from unittest.mock import patch, MagicMock

from core.db import init_db
from core import models
from agents.runner import run_pipeline


# ---------------------------------------------------------------------------
# Fixtures & helpers
# ---------------------------------------------------------------------------

@pytest.fixture
def conn():
    c = init_db(":memory:")
    models.create_project(c, "p1", "P1", "/tmp/p1", tech_stack=["python"])
    models.create_task(c, "P1-001", "p1", "Fix bug",
                       brief={"route_type": "debug"})
    yield c
    c.close()


def _mock_success(output="done"):
    m = MagicMock()
    m.stdout = json.dumps({"result": output})
    m.stderr = ""
    m.returncode = 0
    return m


# ---------------------------------------------------------------------------
# get_effective_mode: task-level priority regression
# ---------------------------------------------------------------------------

class TestGetEffectiveMode:
    """Regression: task.execution_mode has higher priority than project.execution_mode."""

    def test_task_review_overrides_project_auto_complete(self, conn):
        """KIN-097: task=review + project=auto_complete → effective mode is 'review'."""
        models.update_project(conn, "p1", execution_mode="auto_complete")
        models.update_task(conn, "P1-001", execution_mode="review")
        mode = models.get_effective_mode(conn, "p1", "P1-001")
        assert mode == "review", (
            "task-level review должен override project-level auto_complete"
        )

    def test_task_auto_complete_overrides_project_review(self, conn):
        """KIN-097: task=auto_complete + project=review → effective mode is 'auto_complete'."""
        models.update_project(conn, "p1", execution_mode="review")
        models.update_task(conn, "P1-001", execution_mode="auto_complete")
        mode = models.get_effective_mode(conn, "p1", "P1-001")
        assert mode == "auto_complete", (
            "task-level auto_complete должен override project-level review"
        )

    def test_task_none_falls_back_to_project_auto_complete(self, conn):
        """Если task.execution_mode=None, берётся project.execution_mode=auto_complete."""
        models.update_project(conn, "p1", execution_mode="auto_complete")
        # task остаётся без execution_mode
        mode = models.get_effective_mode(conn, "p1", "P1-001")
        assert mode == "auto_complete"

    def test_task_none_project_none_defaults_to_review(self, conn):
        """Если оба None → fallback 'review' (безопасный режим)."""
        # Проект без execution_mode (default NULL)
        mode = models.get_effective_mode(conn, "p1", "P1-001")
        assert mode == "review"


# ---------------------------------------------------------------------------
# run_pipeline: autopilot only triggers in auto_complete
# ---------------------------------------------------------------------------

class TestRunPipelineCompletionMode:
    """KIN-097 acceptance criteria: pipeline outcome depends on execution_mode."""

    @patch("core.followup.generate_followups")
    @patch("agents.runner.run_hooks")
    @patch("agents.runner.subprocess.run")
    def test_task_review_mode_does_not_auto_approve_when_project_is_auto(
        self, mock_run, mock_hooks, mock_followup, conn
    ):
        """KIN-097 regression: project=auto_complete но task=review → status=review (не done)."""
        mock_run.return_value = _mock_success()
        mock_hooks.return_value = []
        mock_followup.return_value = {"created": [], "pending_actions": []}

        models.update_project(conn, "p1", execution_mode="auto_complete")
        # Frontend патчит task с текущим состоянием тоггла перед run
        models.update_task(conn, "P1-001", execution_mode="review")

        steps = [{"role": "debugger", "brief": "find bug"},
                 {"role": "tester", "brief": "verify"}]
        result = run_pipeline(conn, "P1-001", steps)

        assert result["success"] is True
        task = models.get_task(conn, "P1-001")
        assert task["status"] == "review", (
            "При execution_mode=review задача должна ждать ручного approve, "
            "а НЕ auto-approve несмотря на project.execution_mode=auto_complete"
        )

    @patch("core.followup.generate_followups")
    @patch("agents.runner.run_hooks")
    @patch("agents.runner.subprocess.run")
    def test_task_auto_complete_auto_approves_when_project_is_review(
        self, mock_run, mock_hooks, mock_followup, conn
    ):
        """KIN-097: project=review но task=auto_complete → status=done (автопилот активен)."""
        mock_run.return_value = _mock_success()
        mock_hooks.return_value = []
        mock_followup.return_value = {"created": [], "pending_actions": []}

        # Проект в review-режиме
        # Frontend патчит task с текущим состоянием тоггла перед run
        models.update_task(conn, "P1-001", execution_mode="auto_complete")

        steps = [{"role": "debugger", "brief": "find bug"},
                 {"role": "tester", "brief": "verify"}]
        result = run_pipeline(conn, "P1-001", steps)

        assert result["success"] is True
        task = models.get_task(conn, "P1-001")
        assert task["status"] == "done", (
            "task.execution_mode=auto_complete должен auto-approve (status=done) "
            "даже если project.execution_mode=review"
        )

    @patch("core.followup.generate_followups")
    @patch("agents.runner.run_hooks")
    @patch("agents.runner.subprocess.run")
    def test_task_auto_complete_mode_returned_in_result(
        self, mock_run, mock_hooks, mock_followup, conn
    ):
        """run_pipeline включает поле mode=auto_complete в результат."""
        mock_run.return_value = _mock_success()
        mock_hooks.return_value = []
        mock_followup.return_value = {"created": [], "pending_actions": []}

        models.update_task(conn, "P1-001", execution_mode="auto_complete")
        steps = [{"role": "debugger", "brief": "find"},
                 {"role": "tester", "brief": "test"}]
        result = run_pipeline(conn, "P1-001", steps)

        assert result.get("mode") == "auto_complete"

    @patch("core.followup.generate_followups")
    @patch("agents.runner.run_hooks")
    @patch("agents.runner.subprocess.run")
    def test_task_review_mode_returned_in_result(
        self, mock_run, mock_hooks, mock_followup, conn
    ):
        """run_pipeline включает поле mode=review в результат при review-задаче."""
        mock_run.return_value = _mock_success()
        mock_hooks.return_value = []
        mock_followup.return_value = {"created": [], "pending_actions": []}

        models.update_task(conn, "P1-001", execution_mode="review")
        steps = [{"role": "debugger", "brief": "find"}]
        result = run_pipeline(conn, "P1-001", steps)

        assert result.get("mode") == "review"