"""dry_matter_locked: серверный пересчёт весов при сохранении рецепта."""

from __future__ import annotations

import os
import tempfile
import unittest

from app import create_app, db
from app.models import Ingredient, Recipe
from app.services.recipe_calculator import calculate_recipe
from app.services.recipe_update_service import RecipeUpdateError, update_recipe_from_payload
from config import TestingConfig
from tests.helpers.mill_recipe_fixtures import (
    create_component,
    create_recipe_with_children,
    ingredient_payload_from_row,
    recipe_update_payload,
)


class RecipeDryMatterLockedConfig(TestingConfig):
    _TMP_DIR = tempfile.mkdtemp(prefix="wesp-dm-lock-")
    SQLALCHEMY_DATABASE_URI = f"sqlite:///{os.path.join(_TMP_DIR, 'dm_lock_test.db')}"
    SQLALCHEMY_BINDS = {"reports": f"sqlite:///{os.path.join(_TMP_DIR, 'reports_test.db')}"}
    AUTH_LOGIN = "dm-lock-admin"
    AUTH_PASSWORD = "dm-lock-secret"


SCENARIO_SAVE_DRY_MATTER_LOCKED = "SAVE_DRY_MATTER_LOCKED"


class RecipeDryMatterLockedTests(unittest.TestCase):
    def setUp(self) -> None:
        self.app = create_app(RecipeDryMatterLockedConfig)
        self.client = self.app.test_client()
        self.ctx = self.app.app_context()
        self.ctx.push()
        db.create_all()
        self.client.post(
            "/api/auth/login",
            json={"login": "dm-lock-admin", "password": "dm-lock-secret"},
        )

    def tearDown(self) -> None:
        db.session.remove()
        db.drop_all()
        self.ctx.pop()

    def test_update_recipe_from_payload_recalculates_when_locked(self) -> None:
        comp_id = create_component(dry_matter=50.0)
        recipe_id, ing_ids, _ = create_recipe_with_children(
            component_ids=[comp_id], heads=10, with_groups=False
        )
        recipe = db.session.get(Recipe, recipe_id)
        recipe.dry_matter_locked = True
        db.session.commit()

        ing = db.session.get(Ingredient, ing_ids[0])
        payload = recipe_update_payload(
            recipe,
            ingredients=[
                {
                    "id": ing_ids[0],
                    "component_id": comp_id,
                    "dry_matter": 50.0,
                    "dry_matter_per_head": 1.0,
                    "order": 1,
                }
            ],
            groups=[],
        )
        payload["dry_matter_locked"] = True
        payload["heads_count"] = 10
        payload["trip_percent"] = 100.0

        update_recipe_from_payload(recipe_id, payload)
        db.session.commit()

        db.session.refresh(ing)
        self.assertEqual(ing.weight_per_head, 2.0)
        self.assertEqual(ing.amount, 20.0)

    def test_locked_save_matches_calculate_api_math(self) -> None:
        comp_id = create_component(dry_matter=60.0)
        recipe_id, ing_ids, _ = create_recipe_with_children(
            component_ids=[comp_id], heads=20, with_groups=False
        )
        recipe = db.session.get(Recipe, recipe_id)
        recipe.dry_matter_locked = True
        db.session.commit()

        dm_per_head = 0.6
        expected = calculate_recipe(
            ingredients=[{"dryMatterPerHead": dm_per_head, "dryMatter": 60.0}],
            heads_count=20,
            trip_percent=100.0,
            calculate_from_dry_matter=True,
        )

        resp = self.client.put(
            f"/api/recipes/{recipe_id}",
            json={
                "name": recipe.name,
                "heads_count": 20,
                "trip_percent": 100.0,
                "mixing_time": recipe.mixing_time,
                "target_component_id": comp_id,
                "dry_matter_locked": True,
                "unloading_link_broken": False,
                "ingredients": [
                    {
                        "id": ing_ids[0],
                        "component_id": comp_id,
                        "dry_matter": 60.0,
                        "dry_matter_per_head": dm_per_head,
                        "order": 1,
                    }
                ],
                "unloading_groups": [],
            },
        )
        self.assertEqual(resp.status_code, 200, resp.get_data(as_text=True))

        get_resp = self.client.get(f"/api/recipes/{recipe_id}")
        self.assertEqual(get_resp.status_code, 200)
        ing = get_resp.get_json()["ingredients"][0]
        self.assertEqual(
            float(ing["weight_per_head"]),
            expected["ingredients"][0]["weightPerHead"],
        )

    def test_locked_raises_when_dm_percent_missing(self) -> None:
        comp_id = create_component(dry_matter=0.0)
        recipe_id, ing_ids, _ = create_recipe_with_children(
            component_ids=[comp_id], with_groups=False
        )
        recipe = db.session.get(Recipe, recipe_id)
        recipe.dry_matter_locked = True
        db.session.commit()

        payload = recipe_update_payload(
            recipe,
            ingredients=[
                {
                    "id": ing_ids[0],
                    "component_id": comp_id,
                    "dry_matter": 0,
                    "dry_matter_per_head": 1.0,
                    "order": 1,
                }
            ],
            groups=[],
        )
        payload["dry_matter_locked"] = True

        with self.assertRaises(RecipeUpdateError) as ctx:
            update_recipe_from_payload(recipe_id, payload)
        self.assertEqual(ctx.exception.status_code, 400)


if __name__ == "__main__":
    unittest.main()