<?php

use App\Models\Ingredient;
use App\Models\Location;
use App\Models\StockDisposal;
use App\Models\StockEntry;
use App\Models\Supplier;
use App\Services\InventoryService;
use App\Services\ProductionService;
use App\User;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

uses(TestCase::class, RefreshDatabase::class);

function cdcUser(): User
{
    $user = User::query()->create([
        'email' => uniqid('cdc_', true).'@test.example',
        'password' => bcrypt('password'),
    ]);
    $user->forceFill(['admin' => 7, 'confirmed' => true, 'active' => true, 'wizard' => 100, 'blocked' => false])->save();

    return $user->fresh();
}

function cdcIngredient(string $name): Ingredient
{
    return Ingredient::query()->create([
        'name' => $name, 'trans_name' => '', 'inci' => $name, 'trans_inci' => '',
        'effect' => '', 'trans_effect' => '', 'active' => true, 'pos' => 0,
    ]);
}

function cdcStock(Ingredient $ing, Location $location, Supplier $supplier, User $user, array $overrides = []): StockEntry
{
    return StockEntry::query()->create(array_merge([
        'entry_type' => 'ingredient', 'ingredient_id' => $ing->id,
        'supplier_id' => $supplier->id, 'location_id' => $location->id,
        'unit' => 'gram', 'ordered_by' => $user->id, 'ordered_at' => '2026-01-01',
        'ordered_quantity' => 1000, 'status' => 'received',
        'received_by' => $user->id, 'received_at' => '2026-01-15',
        'received_quantity' => 1000, 'batch_number' => 'CDC-B1', 'best_before' => '2030-12-31',
    ], $overrides));
}

function cdcDisposal(Ingredient $ing, Location $location, float $qty, ?int $stockEntryId = null): StockDisposal
{
    return StockDisposal::query()->create([
        'disposal_type' => 'ingredient', 'ingredient_id' => $ing->id,
        'stock_entry_id' => $stockEntryId, 'location_id' => $location->id,
        'quantity' => $qty, 'unit' => 'gram', 'reason' => 'Test', 'disposed_at' => '2026-07-01',
    ]);
}

test('chargen-ausschuss reduziert chargen-restmenge in detail, produktion und batch-check', function () {
    $user = cdcUser();
    $this->actingAs($user, 'user');
    $ing = cdcIngredient('CDC-Voll');
    $location = Location::factory()->create();
    $supplier = Supplier::factory()->create();
    $entry = cdcStock($ing, $location, $supplier, $user);

    cdcDisposal($ing, $location, 1000, $entry->id);

    // Detail: Charge vollständig entsorgt => keine verfügbare Charge mehr.
    expect(app(InventoryService::class)->chargesWithRemainingForIngredient($ing->id))->toHaveCount(0);

    // Produktion: Charge erscheint nicht mehr im FEFO-Angebot.
    expect(app(ProductionService::class)->availableStockEntriesForIngredient($ing->id, $location->id))->toHaveCount(0);

    // Batch-Check (AP-27): remaining = 0.
    $res = $this->getJson(route('admin.inventory.api.stock-entries.batch-check', [
        'ingredient_id' => $ing->id, 'batch_number' => 'CDC-B1',
    ]));
    $res->assertOk();
    expect((float) $res->json('remaining'))->toBe(0.0);
});

test('teil-ausschuss je charge: rest sinkt entsprechend', function () {
    $user = cdcUser();
    $ing = cdcIngredient('CDC-Teil');
    $location = Location::factory()->create();
    $supplier = Supplier::factory()->create();
    $entry = cdcStock($ing, $location, $supplier, $user);

    cdcDisposal($ing, $location, 300, $entry->id);

    $charges = app(InventoryService::class)->chargesWithRemainingForIngredient($ing->id);
    expect($charges)->toHaveCount(1);
    expect((float) $charges->first()->getAttribute('remaining_quantity'))->toBe(700.0);
});

test('detail-kopfwert entspricht der index-aggregation auch bei ausschuss ohne chargenbezug', function () {
    $user = cdcUser();
    $this->actingAs($user, 'user');
    $ing = cdcIngredient('CDC-Kopf');
    $location = Location::factory()->create();
    $supplier = Supplier::factory()->create();
    cdcStock($ing, $location, $supplier, $user);

    cdcDisposal($ing, $location, 400, null); // ohne Chargenbezug

    $indexRemaining = app(InventoryService::class)->remainingByIngredient([$ing->id])[$ing->id];
    expect($indexRemaining)->toBe(600.0);

    $response = $this->get(route('admin.inventory.raw-material-stock.show', $ing));
    $response->assertOk();
    expect($response->viewData('remaining'))->toBe(600.0);
});

test('negativer bestand wird nicht mehr als 0 maskiert (key-vereinigung)', function () {
    $user = cdcUser();
    $ing = cdcIngredient('CDC-Negativ');
    $location = Location::factory()->create();

    // Ausschuss ohne jeglichen Wareneingang.
    cdcDisposal($ing, $location, 250, null);

    $remaining = app(InventoryService::class)->remainingByIngredient([$ing->id]);
    expect($remaining[$ing->id] ?? null)->toBe(-250.0);
});

test('standort-aggregation rechnet chargen-ausschuss am standort der charge ab', function () {
    $user = cdcUser();
    $ing = cdcIngredient('CDC-Standort');
    $locationA = Location::factory()->create(['name' => 'A']);
    $locationB = Location::factory()->create(['name' => 'B']);
    $supplier = Supplier::factory()->create();
    $entry = cdcStock($ing, $locationA, $supplier, $user);

    // Ausschuss der Charge (liegt an A), aber im Formular mit Standort B gebucht.
    cdcDisposal($ing, $locationB, 100, $entry->id);

    $byLocation = app(InventoryService::class)->remainingByLocationForIngredient($ing->id);
    expect($byLocation[$locationA->id])->toBe(900.0);
    expect($byLocation)->not->toHaveKey($locationB->id);
});

test('F-09: ausschuss ohne charge prüft den gewählten lagerort, nicht den globalen bestand', function () {
    $user = cdcUser();
    $supplier = Supplier::factory()->create();
    $locA = Location::factory()->create(['name' => 'F09-A']);
    $locB = Location::factory()->create(['name' => 'F09-B']);
    $ing = cdcIngredient('F09-Standort');
    cdcStock($ing, $locA, $supplier, $user, ['received_quantity' => 1000, 'batch_number' => 'F09-1']);

    $this->actingAs($user, 'user');
    $this->from(route('admin.inventory.stock-disposals.create'))
        ->post(route('admin.inventory.stock-disposals.store'), [
            'disposal_type' => 'ingredient', 'ingredient_id' => $ing->id, 'location_id' => $locB->id,
            'quantity' => '500', 'reason' => 'Verfall / MHD überschritten', 'disposed_at' => '2026-09-01',
        ])->assertSessionHasErrors('quantity');

    expect(app(InventoryService::class)->remainingByLocationForIngredient($ing->id)[$locB->id] ?? 0.0)->toBe(0.0);
});

test('F-09: ausschuss ohne charge wird FEFO auf die chargen des lagerorts verteilt und reduziert deren verfügbarkeit', function () {
    $user = cdcUser();
    $supplier = Supplier::factory()->create();
    $loc = Location::factory()->create();
    $ing = cdcIngredient('F09-FEFO');
    $old = cdcStock($ing, $loc, $supplier, $user, ['received_quantity' => 300, 'batch_number' => 'F09-ALT', 'best_before' => '2027-01-01']);
    $new = cdcStock($ing, $loc, $supplier, $user, ['received_quantity' => 700, 'batch_number' => 'F09-NEU', 'best_before' => '2029-01-01']);

    $this->actingAs($user, 'user');
    $this->post(route('admin.inventory.stock-disposals.store'), [
        'disposal_type' => 'ingredient', 'ingredient_id' => $ing->id, 'location_id' => $loc->id,
        'quantity' => '400', 'reason' => 'Verfall / MHD überschritten', 'disposed_at' => '2026-09-01',
    ])->assertRedirect()->assertSessionHasNoErrors();

    // 300 g aus der älteren Charge (FEFO), 100 g aus der neueren — beides chargenbezogen.
    $this->assertDatabaseHas('stock_disposals', ['stock_entry_id' => $old->id, 'quantity' => 300.00]);
    $this->assertDatabaseHas('stock_disposals', ['stock_entry_id' => $new->id, 'quantity' => 100.00]);
    $this->assertDatabaseMissing('stock_disposals', ['ingredient_id' => $ing->id, 'stock_entry_id' => null]);

    $inventory = app(InventoryService::class);
    $charges = app(ProductionService::class)->availableStockEntriesForIngredient($ing->id, $loc->id);
    expect($inventory->remainingByIngredient([$ing->id])[$ing->id])->toBe(600.0)
        ->and($charges)->toHaveCount(1)
        ->and($charges->first()->id)->toBe($new->id)
        ->and((float) $charges->first()->getAttribute('remaining_quantity'))->toBe(600.0)
        ->and($inventory->chargesWithRemainingForIngredient($ing->id)->sum('remaining_quantity'))->toEqual(600);

    // Gesamten Rest ohne Charge entsorgen: global 0 und keine Charge mehr verfügbar (D-07).
    $this->post(route('admin.inventory.stock-disposals.store'), [
        'disposal_type' => 'ingredient', 'ingredient_id' => $ing->id, 'location_id' => $loc->id,
        'quantity' => '600', 'reason' => 'Verfall / MHD überschritten', 'disposed_at' => '2026-09-02',
    ])->assertSessionHasNoErrors();
    expect($inventory->remainingByIngredient([$ing->id])[$ing->id])->toBe(0.0)
        ->and(app(ProductionService::class)->availableStockEntriesForIngredient($ing->id, $loc->id))->toHaveCount(0);
});

test('N-05: alt-ausschuss ohne chargenbezug wird in der chargenverfügbarkeit FEFO je standort angerechnet', function () {
    $user = cdcUser();
    $supplier = Supplier::factory()->create();
    $loc = Location::factory()->create();
    $other = Location::factory()->create();
    $ing = cdcIngredient('N05-Alt');
    $old = cdcStock($ing, $loc, $supplier, $user, ['received_quantity' => 300, 'batch_number' => 'N05-ALT', 'best_before' => '2027-01-01']);
    $new = cdcStock($ing, $loc, $supplier, $user, ['received_quantity' => 700, 'batch_number' => 'N05-NEU', 'best_before' => '2029-01-01']);
    $elsewhere = cdcStock($ing, $other, $supplier, $user, ['received_quantity' => 500, 'batch_number' => 'N05-ANDERER']);

    // Altbuchung direkt (ohne Controller/FEFO-Verteilung): 400 g ohne Charge am Standort loc.
    cdcDisposal($ing, $loc, 400);

    $inventory = app(InventoryService::class);
    $service = app(ProductionService::class);
    $available = $service->availableStockEntriesForIngredient($ing->id, $loc->id);

    expect($inventory->remainingByIngredient([$ing->id])[$ing->id])->toBe(1100.0)
        ->and($available)->toHaveCount(1)
        ->and($available->first()->id)->toBe($new->id)
        ->and((float) $available->first()->getAttribute('remaining_quantity'))->toBe(600.0)
        ->and($inventory->chargesWithRemainingForIngredient($ing->id)->sum('remaining_quantity'))->toEqual(1100)
        ->and((float) $service->availableStockEntriesForIngredient($ing->id, $other->id)->first()->getAttribute('remaining_quantity'))->toBe(500.0);

    // D-07 des Erstberichts: gesamter Eingang ohne Charge entsorgt → keine Charge mehr verfügbar.
    cdcDisposal($ing, $loc, 600);
    expect($inventory->remainingByIngredient([$ing->id])[$ing->id])->toBe(500.0)
        ->and($service->availableStockEntriesForIngredient($ing->id, $loc->id))->toHaveCount(0);

    // Chargen-Ausschuss über den Rest der Charge hinaus wird abgelehnt (nutzt dieselbe Verfügbarkeit).
    $this->actingAs($user, 'user');
    $this->from(route('admin.inventory.stock-disposals.create'))
        ->post(route('admin.inventory.stock-disposals.store'), [
            'disposal_type' => 'ingredient', 'ingredient_id' => $ing->id, 'stock_entry_id' => $new->id, 'location_id' => $loc->id,
            'quantity' => '1', 'reason' => 'Verfall / MHD überschritten', 'disposed_at' => '2026-09-01',
        ])->assertSessionHasErrors('quantity');
});