<?php

namespace App\Http\Controllers\Api\Player;

use App\Helper\Uuid\UuidHelper;
use App\Http\Controllers\Controller;
use App\Http\Middleware\AccessLogger;
use App\Http\Requests\Api\Player\PurchaseItemRequest;
use App\Http\Requests\Api\Player\PurchaseSetRequest;
use App\Http\Responses\Api\Player\Purchase\PurchaseItemResponse;
use App\Http\Responses\Api\Player\Purchase\PurchaseSetResponse;
use App\Http\Responses\Api\Player\Purchase\WalletEntry;
use App\Models\Game\CatalogItem;
use App\Models\Game\Challenge;
use App\Models\Game\CharacterData;
use App\Models\Game\PickedChallenge;
use App\Models\User\PlayerData;
use Illuminate\Database\UniqueConstraintViolationException;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Log;
use Ramsey\Uuid\Uuid;

class PurchaseController extends Controller
{
    public function purchaseSet(PurchaseSetRequest $request)
    {
        $user = Auth::user();
        $playerData = $user->playerData();
        $setItem = CatalogItem::find($request->itemId, ['id']);

        if($setItem === null)
            return response('Set item not found.', 404);

        $bundleItems = $setItem->bundleItems()->get([
            'id',
            'default_cost_currency_a',
            'default_cost_currency_b',
            'default_cost_currency_c'
        ]);

        $costA = $costB = $costC = 0;

        $bundleItems->each(function (CatalogItem $item) use (&$costA, &$costB, &$costC) {
            $costA += $item->default_cost_currency_a;
            $costB += $item->default_cost_currency_b;
            $costC += $item->default_cost_currency_c;
        });

        if( $playerData->currency_a < $costA ||
            $playerData->currency_b < $costB ||
            $playerData->currency_c < $costC)
            return response('Not enough Currency', 402);

        $bundleItemIds = $setItem->bundleItems()->allRelatedIds();
        $bundleItemIds->add($setItem->id);

        try {
            $playerData->inventory()->syncWithoutDetaching($bundleItemIds);
        }
        catch (UniqueConstraintViolationException $e) {
            $message = 'User "'.$user->id.'" ('.$user->last_known_username.') tried to purchase item already in inventory'."\n";
            AccessLogger::getSessionLogConfig()->notice($message.json_encode([
                    'bundleItems' => $bundleItems,
                    'setItem' => $setItem,
                ]));
            return response('Item already in inventory.', 418);
        }

        $playerData->currency_a -= $costA;
        $playerData->currency_b -= $costB;
        $playerData->currency_c -= $costC;
        $playerData->save();

        $cost = new WalletEntry(
            $costA, 0,
            $costB, 0,
            $costC, 0,
        );

        $newBalance = new WalletEntry(
            $playerData->currency_a, $costA,
            $playerData->currency_b, $costB,
            $playerData->currency_c, $costC,
        );

        $response = new PurchaseSetResponse(
            $cost,
            $newBalance,
            [Uuid::fromString($setItem->id)->getHex()->toString()],
            UuidHelper::convertFromUuidToHexCollection($bundleItemIds->toArray())->toArray(),
        );

        return json_encode($response);
    }

    public function purchaseItem(PurchaseItemRequest $request)
    {
        $user = Auth::user();
        $playerData = $user->playerData();
        $quantityToBuy = $request->wantedQuantity - $request->oldQuantity;

        $itemToBuy = CatalogItem::find($request->objectId);

        if(!$this->hasCompletedChallengeForItem($itemToBuy, $playerData)) {
            Log::channel('dg_purchase_error')->error(json_encode([
                'errorReason' => 'Challenge not completed',
                'user' => $user->id . " ($user->last_known_username)",
                'playerData' => $playerData->attributesToArray(),
                'itemToBuy' => $itemToBuy->display_name,
            ],
                JSON_PRETTY_PRINT));
            return response('Not completed required challenge/s', 418);
        }

        if( $playerData->currency_a < ($itemToBuy->default_cost_currency_a * $quantityToBuy) ||
            $playerData->currency_b < ($itemToBuy->default_cost_currency_b * $quantityToBuy) ||
            $playerData->currency_c < ($itemToBuy->default_cost_currency_c * $quantityToBuy)) {
            Log::channel('dg_purchase_error')->error(json_encode([
                'errorReason' => 'Not enough Currency',
                'user' => $user->id . " ($user->last_known_username)",
                'playerData' => $playerData->attributesToArray(),
                'itemToBuy' => $itemToBuy->display_name,
            ],
                JSON_PRETTY_PRINT));
            return response('Not enough Currency', 418);
        }

        try {
            $playerData->inventory()->syncWithoutDetaching($itemToBuy);
        }
        catch (UniqueConstraintViolationException $e) {
            $message = 'User "'.$user->id.'" ('.$user->last_known_username.') tried to purchase item already in inventory'."\n";
            AccessLogger::getSessionLogConfig()->notice($message.json_encode([
                    'item to buy' => $itemToBuy,
                ]));
            Log::channel('dg_purchase_error')->notice($message.json_encode([
                    'item to buy' => $itemToBuy,
            ]));
            return response('Item already in inventory.', 418);
        }

        $playerData->currency_a -= $itemToBuy->default_cost_currency_a * $quantityToBuy;
        $playerData->currency_b -= $itemToBuy->default_cost_currency_b * $quantityToBuy;
        $playerData->currency_c -= $itemToBuy->default_cost_currency_c * $quantityToBuy;
        $playerData->save();

        $hexItemId = Uuid::fromString($itemToBuy->id)->getHex()->toString();

        $response = new PurchaseItemResponse(
            $user->id,
            $hexItemId,
            $quantityToBuy,
            new WalletEntry(
                $playerData->currency_a,
                $itemToBuy->default_cost_currency_a * $quantityToBuy,
                $playerData->currency_b,
                $itemToBuy->default_cost_currency_b * $quantityToBuy,
                $playerData->currency_c,
                $itemToBuy->default_cost_currency_c * $quantityToBuy,
            ),
            [$hexItemId],
        );

        return json_encode($response);
    }

    protected function hasCompletedChallengeForItem(CatalogItem &$item, PlayerData &$playerData)
    {
        /** @var Challenge $foundChallenge */
        $foundChallenge = $item->requiredChallenges()->first();

        if ($foundChallenge !== null) {
            return $foundChallenge->getProgressForPlayer($playerData->id) >= $foundChallenge->completion_value;
        }

        $characterIds = [];
        $playerData->characterData()->get(['id'])->each(function (CharacterData $data) use ($characterIds) {
            $characterIds[] = $data->id;
        });

        $foundChallenge = PickedChallenge::where('catalog_item_id', '=', $item->id)
            ->whereIn('character_data_id', $characterIds)->first();

        if($foundChallenge === null)
            return true;

        return $foundChallenge->progress >= $foundChallenge->completion_value;
    }
}