from __future__ import annotations

import importlib.util
import json
import os
import uuid
from pathlib import Path


def load_module(module_path: Path, data_dir: Path, plans_dir: Path):
    try:
        import flask  # noqa: F401
    except ModuleNotFoundError:
        import pytest
        pytest.skip("Flask ist in dieser isolierten Testumgebung nicht installiert")
    os.environ["TRAININGSTRACKER_DATA_DIR"] = str(data_dir)
    os.environ["TRAININGSTRACKER_PLANS_DIR"] = str(plans_dir)
    name = f"tracker_test_app_{uuid.uuid4().hex}"
    spec = importlib.util.spec_from_file_location(name, module_path)
    module = importlib.util.module_from_spec(spec)
    assert spec.loader
    spec.loader.exec_module(module)
    return module


def sample_plan() -> dict:
    return {
        "name": "Testplan",
        "revision": 4,
        "published_revision": 4,
        "config": {
            "schema_version": 5,
            "contract_version": 4,
            "plan_id": "testplan",
            "meta": {"title": "Testplan"},
            "exercises": [
                {
                    "id": "exercise-push",
                    "name": "Push-up-Progression",
                    "progressions": [
                        {"id": "progression-high-plank", "name": "High Plank"},
                        {"id": "progression-negative", "name": "Negative"},
                    ],
                    "current_progression_id": "progression-high-plank",
                }
            ],
            "days": [
                {
                    "id": "day-1",
                    "num": 1,
                    "name": "Tag 1",
                    "warmup": {"items": ["Mobilisieren"]},
                    "cooldown": {"items": ["Atmen"]},
                    "exercises": [{"id": "item-1", "exercise_id": "exercise-push"}],
                }
            ],
        },
        "draft": {
            "schema_version": 5,
            "contract_version": 4,
            "plan_id": "testplan",
            "meta": {"title": "Testplan"},
            "exercises": [
                {
                    "id": "exercise-push",
                    "name": "Push-up-Progression",
                    "progressions": [
                        {"id": "progression-high-plank", "name": "High Plank"},
                        {"id": "progression-negative", "name": "Negative"},
                    ],
                    "current_progression_id": "progression-high-plank",
                }
            ],
            "days": [
                {
                    "id": "day-1",
                    "num": 1,
                    "name": "Tag 1",
                    "warmup": {"items": ["Mobilisieren"]},
                    "cooldown": {"items": ["Atmen"]},
                    "exercises": [{"id": "item-1", "exercise_id": "exercise-push"}],
                }
            ],
        },
    }


def test_lists_only_training_plans_and_returns_slim_detail(tmp_path: Path):
    plans = tmp_path / "data" / "trainingsplan" / "plans"
    data_dir = tmp_path / "data" / "trainingstracker"
    plans.mkdir(parents=True)
    (plans / "training.json").write_text(json.dumps(sample_plan()), encoding="utf-8")
    (plans / "food.json").write_text(json.dumps({"name": "Essen", "config": {"type": "recipe", "days": []}}), encoding="utf-8")

    module = load_module(Path(__file__).parents[1] / "app.py", data_dir, plans)
    client = module.app.test_client()

    listed = client.get("/api/plans").get_json()
    assert [item["id"] for item in listed["plans"]] == ["training.json"]

    detail = client.get("/api/plans/training.json").get_json()
    cfg = detail["plan"]["config"]
    assert cfg["schema_version"] == 5
    assert cfg["contract_version"] == 4
    assert cfg["days"][0]["exercises"][0]["exercise"]["current_progression"]["name"] == "High Plank"


def test_current_progression_update_writes_config_and_draft(tmp_path: Path):
    plans = tmp_path / "data" / "trainingsplan" / "plans"
    data_dir = tmp_path / "data" / "trainingstracker"
    plans.mkdir(parents=True)
    plan_file = plans / "training.json"
    plan_file.write_text(json.dumps(sample_plan()), encoding="utf-8")

    module = load_module(Path(__file__).parents[1] / "app.py", data_dir, plans)
    client = module.app.test_client()

    response = client.patch(
        "/api/plans/training.json/exercises/exercise-push/current",
        json={"current_progression_id": "progression-negative"},
    )

    assert response.status_code == 200
    payload = response.get_json()
    exercise = payload["plan"]["config"]["exercises"][0]
    assert exercise["current_progression_id"] == "progression-negative"

    saved = json.loads(plan_file.read_text(encoding="utf-8"))
    assert saved["config"]["exercises"][0]["current_progression_id"] == "progression-negative"
    assert saved["draft"]["exercises"][0]["current_progression_id"] == "progression-negative"
    assert saved["revision"] == 5
    assert saved["published_revision"] == 5


def test_frontend_no_longer_contains_session_or_analysis_surfaces():
    source = (Path(__file__).parents[1] / "static" / "index.html").read_text(encoding="utf-8")
    assert "data-current-progression" in source
    assert "analysis/status" not in source
    assert "sessionView" not in source
    assert "week" not in source.lower()


def test_frontend_embeds_plugin_mount_path(tmp_path: Path):
    plans = tmp_path / "data" / "trainingsplan" / "plans"
    data_dir = tmp_path / "data" / "trainingstracker"
    plans.mkdir(parents=True)
    (plans / "training.json").write_text(json.dumps(sample_plan()), encoding="utf-8")

    module = load_module(Path(__file__).parents[1] / "app.py", data_dir, plans)
    client = module.app.test_client()

    html = client.get("/", environ_overrides={"SCRIPT_NAME": "/plugins/trainingstracker"}).get_data(as_text=True)
    assert 'data-base="/plugins/trainingstracker"' in html