<?php

namespace App\Http\Controllers\Api\V4;

use App\Exceptions\Api\V4\CrmException;
use App\Http\Controllers\Controller;
use App\Http\Requests\Api\V4\BaseApiRequest;
use App\Http\Requests\Api\V4\SingleOptinRequest;
use App\Http\Requests\Api\V4\SingleOptinRemoveWithHashcodeRequest;
use App\Models\CustomerInfo;
use App\Models\Service;
use App\Models\SingleOptin;

class OptinController extends Controller
{
    /**
     * Creates a new Single optin or destroys it if exists.
     *
     * @param \App\Http\Requests\Api\V4\SingleOptinRequest $request
     * @param \App\Models\Service                          $service
     * @return \Illuminate\Http\JsonResponse
     * @throws \App\Exceptions\Api\V4\CrmException If the single optin could not be added or removed.
     */
    public function optin(SingleOptinRequest $request, Service $service): \Illuminate\Http\JsonResponse
    {
        $validatedData = $request->validated();
        $crmCustomer   = CustomerInfo::getFromEmail($service->brand, $validatedData['email'])->first();
        if ($crmCustomer) {
            // Update the optin field.
            $crmCustomer->opt_in = \boolval($validatedData['opt_in']);

            // Check the saving.
            if (!$crmCustomer->saveOrFail()) {
                // @codeCoverageIgnoreStart
                throw new CrmException('Api failed to update customer optin.');
                // @codeCoverageIgnoreEnd
            }

            // Associate answers if presents.
            if (isset($validatedData['answer_id'])) {
                $crmCustomer->answers()->attach($validatedData['answer_id']);
            }
        } else {
            // Get the single optin if exist or create it.
            /** @var \App\Models\SingleOptin */
            $singleOptin = SingleOptin::query()
                ->where('email', $validatedData['email'])
                ->whereHas('brand', function ($q) use ($service) {
                    $q->whereKey($service->brand->getKey());
                })
                ->firstOrNew();

            // Update the optin field and check the saving.
            if (!$this->changeOptin($service, $request, \boolval($validatedData['opt_in']), $singleOptin)) {
                // @codeCoverageIgnoreStart
                throw new CrmException('Api failed to update single optin.');
                // @codeCoverageIgnoreEnd
            }

            // Associate answers if presents.
            if (isset($validatedData['answer_id'])) {
                $singleOptin->answers()->attach($validatedData['answer_id']);
            }
        } //end if

        return response()->json();
    }

    /**
     * Creates a new Single optin or destroys it if exists using hashcode.
     *
     * @param \App\Http\Requests\Api\V4\SingleOptinRemoveWithHashcodeRequest $request
     * @param \App\Models\Service                                            $service
     * @return \Illuminate\Http\JsonResponse
     * @throws \App\Exceptions\Api\V4\CrmException If the single optin could not be removed.
     */
    public function optoutWithHashcode(
        SingleOptinRemoveWithHashcodeRequest $request,
        Service $service
    ): \Illuminate\Http\JsonResponse {
        $validatedData = $request->validated();
        $crmCustomer   = CustomerInfo::getFromHashcode($service->brand, $validatedData['hashcode'])->first();
        if ($crmCustomer) {
            // Update the optin field.
            $crmCustomer->opt_in = false;

            // Check the saving.
            if (!$crmCustomer->saveOrFail()) {
                // @codeCoverageIgnoreStart
                throw new CrmException('Api failed to update customer optin.');
                // @codeCoverageIgnoreEnd
            }
        } else {
            // Get the single optin if exist or create it.
            /** @var \App\Models\SingleOptin */
            $singleOptin = SingleOptin::query()->where('hashcode', $validatedData['hashcode'])
                ->whereHas('brand', function ($q) use ($service) {
                    $q->whereId($service->brand->getKey());
                })->firstOrFail();

            // Update the optin field and check the saving.
            if ($singleOptin and !$this->changeOptin($service, $request, false, $singleOptin)) {
                // @codeCoverageIgnoreStart
                throw new CrmException('Api failed to update single optin.');
                // @codeCoverageIgnoreEnd
            }
        } //end if

        return response()->json();
    }

    /**
     * Changes the optin state.
     *
     * @param \App\Models\Service                      $service
     * @param \App\Http\Requests\Api\V4\BaseApiRequest $request
     * @param boolean                                  $optin
     * @param \App\Models\SingleOptin                  $singleOptin
     * @return boolean Returns false in case of failure.
     */
    private function changeOptin(Service $service, BaseApiRequest $request, bool $optin, SingleOptin $singleOptin): bool
    {
        if ($optin) {
            $singleOptin->fill($request->validated());
            $singleOptin->brand()->associate($service->brand);
            return $singleOptin->save();
        }
        return $singleOptin->delete() !== false;
    }
}