<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\Forms\Form;
use App\Models\User;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Password;
use Laravel\Cashier\Cashier;

class AdminController extends Controller
{
    public const ADMIN_LOG_PREFIX = '[admin_action] ';

    public function __construct()
    {
        $this->middleware('moderator');
    }

    public function fetchUser($identifier)
    {
        $user = null;
        if (is_numeric($identifier)) {
            $user = User::find($identifier);
        } elseif (filter_var($identifier, FILTER_VALIDATE_EMAIL)) {
            $user = User::whereEmail($identifier)->first();
        } else {
            // Find by form slug
            $form = Form::whereSlug($identifier)->first();
            if ($form) {
                $user = $form->creator;
            }
        }

        if (!$user) {
            return $this->error([
                'message' => 'User not found.'
            ]);
        } elseif ($user->admin) {
            return $this->error([
                'message' => 'You cannot fetch an admin.'
            ]);
        }
        $workspaces = $user->workspaces()
            ->withCount('forms')
            ->get()
            ->map(function ($workspace) {
                $plan = 'free';
                if ($workspace->is_trialing) {
                    $plan = 'trialing';
                }
                if ($workspace->is_pro) {
                    $plan = 'pro';
                }
                if ($workspace->is_enterprise) {
                    $plan = 'enterprise';
                }
                return [
                    'id' => $workspace->id,
                    'name' => $workspace->name,
                    'plan' => $plan,
                    'forms_count' => $workspace->forms_count
                ];
            });
        return $this->success([
            'user' => $user,
            'workspaces' => $workspaces
        ]);
    }

    public function applyDiscount(Request $request)
    {
        $request->validate([
            'user_id' => 'required'
        ]);
        $user = User::find($request->get("user_id"));

        $activeSubscriptions = $user->subscriptions()->where(function ($q) {
            $q->where('stripe_status', 'trialing')
                ->orWhere('stripe_status', 'active');
        })->get();

        if ($activeSubscriptions->count() != 1) {
            return $this->error([
                "message" => "The user has more than one active subscriptions or doesn't have one."
            ]);
        }

        $couponId = config('pricing.discount_coupon_id');
        if (is_null($couponId)) {
            return $this->error([
                "message" => "Coupon id not defined."
            ]);
        }

        $subscription = $activeSubscriptions->first();
        Cashier::stripe()->subscriptions->update($subscription->stripe_id, [
            'coupon' => $couponId
        ]);

        self::log('Applying NGO/Student discount to sub', [
            'user_id' => $user->id,
            'subcription_id' => $subscription->id,
            'coupon_id' => $couponId,
            'subscription_stripe_id' => $subscription->stripe_id,
            'moderator_id' => auth()->id(),
        ]);

        return $this->success([
            "message" => "40% Discount applied for the next 12 months."
        ]);
    }

    public function extendTrial(Request $request)
    {
        $request->validate([
            'user_id' => 'required',
            'number_of_day' => 'required|numeric|max:14'
        ]);
        $user = User::find($request->get("user_id"));

        $subscription = $user->subscriptions()
            ->where('stripe_status', 'trialing')
            ->firstOrFail();

        $trialEndDate = now()->addDays($request->get('number_of_day'));
        $subscription->extendTrial($trialEndDate);

        self::log('Trial extended', [
            'user_id' => $user->id,
            'subcription_id' => $subscription->id,
            'nb_days' => $request->get('number_of_day'),
            'subscription_stripe_id' => $subscription->stripe_id,
            'moderator_id' => auth()->id(),
        ]);

        return $this->success([
            "message" => "Subscription trial extend until the " . $trialEndDate->format('d/m/Y')
        ]);
    }

    public function cancelSubscription(Request $request)
    {
        $request->validate([
            'user_id' => 'required',
            'cancellation_reason' => 'required'
        ]);
        $user = User::find($request->get("user_id"));

        $activeSubscriptions = $user->subscriptions()->where(function ($q) {
            $q->where('stripe_status', 'trialing')
                ->orWhere('stripe_status', 'active');
        })->get();

        if ($activeSubscriptions->count() != 1) {
            return $this->error([
                "message" => "The user has more than one active subscriptions or doesn't have one."
            ]);
        }

        $subscription = $activeSubscriptions->first();
        $subscription->cancel();

        self::log('Cancel Subscription', [
            'user_id' => $user->id,
            'cancel_reason' => $request->get('cancellation_reason'),
            'moderator_id' => auth()->id(),
            'subcription_id' => $subscription->id,
            'subscription_stripe_id' => $subscription->stripe_id
        ]);

        return $this->success([
            "message" => "The subscription cancellation has been successfully completed."
        ]);
    }

    public function sendPasswordResetEmail(Request $request)
    {
        $user = User::findOrFail($request->user_id);

        $status = Password::sendResetLink(['email' => $user->email]);

        if ($status !== Password::RESET_LINK_SENT) {
            return $this->error([
                'message' => "Password reset email failed to send"
            ]);
        }

        self::log('Sent password reset email', [
            'user_id' => $user->id,
            'moderator_id' => auth()->id(),
        ]);

        return $this->success([
            'message' => "Password reset email has been sent to the user's email address"
        ]);
    }

    public static function log($message, $data = [])
    {
        \Log::warning(self::ADMIN_LOG_PREFIX . $message, $data);
    }
}