"""Superadmin Übungs-Anreicherung — Auth, Merge-Logik, Status, Analyze."""
from __future__ import annotations

import os
from unittest.mock import MagicMock, patch

import pytest
from fastapi.testclient import TestClient

os.environ.setdefault("SKIP_DB_MIGRATE", "1")

from auth import require_auth
from exercise_enrichment import (
    apply_exercise_enrichment,
    compute_skill_diff,
    estimate_llm_calls,
    merge_skills,
    persist_merged_skills,
    validate_exercise_for_enrichment,
)
from main import app


@pytest.fixture
def client() -> TestClient:
    return TestClient(app)


@pytest.fixture(autouse=True)
def _clear_overrides():
    yield
    app.dependency_overrides.pop(require_auth, None)


def test_candidates_requires_superadmin(client: TestClient) -> None:
    def _admin():
        return {"profile_id": 1, "role": "admin"}

    app.dependency_overrides[require_auth] = _admin
    r = client.get("/api/admin/exercise-enrichment/candidates", headers={"X-Auth-Token": "t"})
    assert r.status_code == 403


def test_preview_requires_superadmin(client: TestClient) -> None:
    def _trainer():
        return {"profile_id": 1, "role": "trainer"}

    app.dependency_overrides[require_auth] = _trainer
    r = client.post(
        "/api/admin/exercise-enrichment/preview",
        headers={"X-Auth-Token": "t", "Content-Type": "application/json"},
        json={"exercise_ids": [1], "modes": {"skills": True}},
    )
    assert r.status_code == 403


@patch("routers.exercise_enrichment_admin.get_db")
def test_candidates_ok_for_superadmin(mock_get_db, client: TestClient) -> None:
    def _super():
        return {"profile_id": 1, "role": "superadmin"}

    app.dependency_overrides[require_auth] = _super

    mock_cm = MagicMock()
    mock_conn = MagicMock()
    mock_cm.__enter__.return_value = mock_conn
    mock_cm.__exit__.return_value = False
    mock_cur = MagicMock()
    mock_cur.fetchone.side_effect = [{"c": 2}, None]
    mock_cur.fetchall.return_value = [
        {
            "id": 10,
            "title": "Kata Basics",
            "status": "draft",
            "visibility": "private",
            "summary": "",
            "updated_at": "2026-05-23T10:00:00",
            "primary_focus_name": "Karate",
            "skill_count": 0,
            "ai_suggested_skill_count": 0,
        }
    ]
    mock_get_db.return_value = mock_cm

    with patch("routers.exercise_enrichment_admin.get_cursor", return_value=mock_cur):
        r = client.get(
            "/api/admin/exercise-enrichment/candidates?status=draft&without_skills=true",
            headers={"X-Auth-Token": "t"},
        )

    assert r.status_code == 200
    body = r.json()
    assert body["total"] == 2
    assert len(body["items"]) == 1
    assert body["items"][0]["id"] == 10


def test_analyze_returns_llm_estimate(client: TestClient) -> None:
    def _super():
        return {"profile_id": 1, "role": "superadmin"}

    app.dependency_overrides[require_auth] = _super
    r = client.post(
        "/api/admin/exercise-enrichment/analyze",
        headers={"X-Auth-Token": "t", "Content-Type": "application/json"},
        json={
            "exercise_ids": [1, 2, 3],
            "modes": {"skills": True, "summary": True, "instructions": False},
        },
    )
    assert r.status_code == 200
    body = r.json()
    assert body["exercise_count"] == 3
    est = body["estimated_llm_calls"]
    assert est["total"] == 6
    assert est["skills"] == 3
    assert est["summary"] == 3


def test_validate_exercise_requires_title_and_content() -> None:
    assert (
        validate_exercise_for_enrichment({"title": "", "goal": "<p>x</p>"}, want_skills=True)
        == "Titel fehlt"
    )
    assert (
        validate_exercise_for_enrichment({"title": "Foo", "goal": "", "execution": ""}, want_skills=True)
        == "Mindestens Ziel oder Durchführung muss Inhalt liefern (für Skills/Kurzfassung)"
    )
    assert validate_exercise_for_enrichment({"title": "Foo", "goal": "<p>Ziel</p>"}, want_skills=True) is None


def test_merge_skills_additive_keeps_manual() -> None:
    existing = [
        {
            "skill_id": 1,
            "skill_name": "Manual",
            "intensity": "hoch",
            "required_level": "aufbau",
            "target_level": "fortgeschritten",
            "is_primary": True,
            "ai_suggested": False,
        }
    ]
    suggested = [
        {
            "skill_id": 1,
            "skill_name": "Manual AI",
            "intensity": "niedrig",
            "required_level": "basis",
            "target_level": "grundlagen",
            "is_primary": False,
        },
        {
            "skill_id": 2,
            "skill_name": "New AI",
            "intensity": "mittel",
            "required_level": "grundlagen",
            "target_level": "aufbau",
            "is_primary": False,
        },
    ]
    merged = merge_skills(existing, suggested, "additive")
    assert len(merged) == 2
    manual = next(s for s in merged if s["skill_id"] == 1)
    assert manual["intensity"] == "hoch"
    assert manual["ai_suggested"] is False
    ai_new = next(s for s in merged if s["skill_id"] == 2)
    assert ai_new["ai_suggested"] is True
    assert ai_new["intensity"] == "mittel"


def test_merge_skills_replace_all_marks_ai() -> None:
    existing = [
        {"skill_id": 1, "skill_name": "M", "intensity": "hoch", "ai_suggested": False},
    ]
    suggested = [
        {"skill_id": 3, "skill_name": "New AI", "intensity": "niedrig", "required_level": "basis", "target_level": "aufbau"},
    ]
    merged = merge_skills(existing, suggested, "replace_all")
    assert len(merged) == 1
    assert merged[0]["skill_id"] == 3
    assert merged[0]["ai_suggested"] is True
    assert merged[0]["intensity"] == "niedrig"


def test_compute_skill_diff_added_and_removed() -> None:
    before = [{"skill_id": 1, "skill_name": "A", "intensity": "mittel", "ai_suggested": False}]
    after = [
        {"skill_id": 1, "skill_name": "A", "intensity": "mittel", "ai_suggested": False},
        {"skill_id": 2, "skill_name": "B", "intensity": "hoch", "ai_suggested": True},
    ]
    diff = compute_skill_diff(before, after)
    assert len(diff["added"]) == 1
    assert diff["added"][0]["skill_id"] == 2


@patch("exercise_enrichment.enrich_exercise_detail")
def test_apply_sets_in_review(mock_enrich) -> None:
    mock_enrich.return_value = {
        "id": 5,
        "title": "Test",
        "goal": "<p>G</p>",
        "execution": "",
        "status": "draft",
        "skills": [],
    }
    mock_cur = MagicMock()
    row = apply_exercise_enrichment(
        mock_cur,
        5,
        merged_skills=[
            {
                "skill_id": 9,
                "skill_name": "Kick",
                "intensity": "mittel",
                "required_level": "grundlagen",
                "target_level": "aufbau",
                "is_primary": True,
                "ai_suggested": True,
            }
        ],
        merge_mode="replace_all",
        set_status="in_review",
        apply_skills=True,
    )
    assert row["ok"] is True
    assert row["status"] == "in_review"
    assert mock_cur.execute.call_count >= 2


def test_apply_rejects_approved_status() -> None:
    mock_cur = MagicMock()
    with patch(
        "exercise_enrichment.enrich_exercise_detail",
        return_value={
            "title": "T",
            "goal": "<p>G</p>",
            "status": "draft",
            "skills": [],
        },
    ):
        row = apply_exercise_enrichment(
            mock_cur,
            1,
            merged_skills=[{"skill_id": 1, "intensity": "mittel", "ai_suggested": True}],
            set_status="approved",
            apply_skills=True,
        )
    assert row["ok"] is False
    assert "approved" in row["error"]


def test_persist_merged_skills_uses_upsert() -> None:
    mock_cur = MagicMock()
    persist_merged_skills(
        mock_cur,
        7,
        [
            {
                "skill_id": 3,
                "intensity": "mittel",
                "required_level": "grundlagen",
                "target_level": "aufbau",
                "is_primary": False,
                "ai_suggested": True,
            }
        ],
        "replace_all",
    )
    sql = mock_cur.execute.call_args_list[-1][0][0]
    assert "INSERT INTO exercise_skills" in sql


def test_estimate_llm_calls_breakdown() -> None:
    est = estimate_llm_calls(
        exercise_count=100,
        want_skills=True,
        want_summary=False,
        want_instructions=True,
    )
    assert est["total"] == 200
    assert est["per_exercise"] == 2