<?php

namespace App\Http\Controllers\Pos;

use App\Http\Controllers\Controller;
use App\Http\Controllers\Pos\Concerns\ScopesToAccount;
use App\Models\PosLocation;
use App\Models\PosSale;
use App\Models\PosTable;
use App\Services\Pos\PosLocationService;
use App\Services\Pos\SubscriptionService;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Validation\Rule;
use Illuminate\View\View;

class LocationController extends Controller
{
    use ScopesToAccount;

    public function __construct(
        private PosLocationService $locations,
        private SubscriptionService $subscriptions,
    ) {}

    public function index(Request $request): RedirectResponse
    {
        $owner = $this->ownerRef($request);

        abort_unless(
            app(\App\Services\Pos\PosMemberResolver::class)->canManageBranches(
                $this->posMember($request),
                $owner,
                $this->actor($request),
            ),
            403,
        );

        return redirect()->route('pos.settings')->withFragment('branches');
    }

    public function create(Request $request): View|RedirectResponse
    {
        return $this->guardManage($request) ?? view('pos.branches.create');
    }

    public function store(Request $request): RedirectResponse
    {
        if ($redirect = $this->guardManage($request)) {
            return $redirect;
        }

        $owner = $this->ownerRef($request);
        $account = ladill_account() ?? $request->user();

        if (! $this->subscriptions->canAddLocation($account, $owner)) {
            return redirect()->route('pos.pro.index')
                ->with('upsell', $this->subscriptions->locationLimitMessage($account));
        }

        $data = $request->validate([
            'name' => ['required', 'string', 'max:120'],
            'currency' => ['required', 'string', 'size:3'],
            'service_style' => ['required', 'in:retail,restaurant'],
        ]);

        if ($data['service_style'] === 'restaurant' && ! $this->subscriptions->canUseRestaurantMode($account)) {
            return back()->withInput()->with('upsell', 'Restaurant mode is part of Ladill POS Pro.');
        }

        $isFirst = $this->subscriptions->locationCount($owner) === 0;

        PosLocation::create([
            'owner_ref' => $owner,
            'name' => $data['name'],
            'currency' => strtoupper($data['currency']),
            'service_style' => $data['service_style'],
            'is_default' => $isFirst,
        ]);

        return redirect()->route('pos.settings')->withFragment('branches')->with('success', 'Branch created.');
    }

    public function edit(Request $request, PosLocation $location): View|RedirectResponse
    {
        $this->authorizeOwner($request, $location);
        if ($redirect = $this->guardManage($request)) {
            return $redirect;
        }

        return view('pos.branches.edit', compact('location'));
    }

    public function update(Request $request, PosLocation $location): RedirectResponse
    {
        $this->authorizeOwner($request, $location);
        if ($redirect = $this->guardManage($request)) {
            return $redirect;
        }

        $account = ladill_account() ?? $request->user();
        $data = $request->validate([
            'name' => ['required', 'string', 'max:120'],
            'currency' => ['required', 'string', 'size:3'],
            'service_style' => ['required', 'in:retail,restaurant'],
            'is_default' => ['sometimes', 'boolean'],
        ]);

        if ($data['service_style'] === 'restaurant' && ! $this->subscriptions->canUseRestaurantMode($account)) {
            return back()->withInput()->with('upsell', 'Restaurant mode is part of Ladill POS Pro.');
        }

        if ($request->boolean('is_default')) {
            PosLocation::owned($this->ownerRef($request))
                ->where('id', '!=', $location->id)
                ->update(['is_default' => false]);
            $location->is_default = true;
        }

        $location->update([
            'name' => $data['name'],
            'currency' => strtoupper($data['currency']),
            'service_style' => $data['service_style'],
        ]);

        return redirect()->route('pos.settings')->withFragment('branches')->with('success', 'Branch updated.');
    }

    public function destroy(Request $request, PosLocation $location): RedirectResponse
    {
        $this->authorizeOwner($request, $location);
        if ($redirect = $this->guardManage($request)) {
            return $redirect;
        }

        $owner = $this->ownerRef($request);

        if (PosLocation::owned($owner)->count() <= 1) {
            return back()->with('error', 'You must keep at least one branch.');
        }

        if (PosSale::owned($owner)->where('location_id', $location->id)->exists()) {
            return back()->with('error', 'This branch has sales history and cannot be removed.');
        }

        if (PosTable::owned($owner)->where('location_id', $location->id)->where('status', '!=', PosTable::STATUS_FREE)->exists()) {
            return back()->with('error', 'Settle open tickets on this branch before removing it.');
        }

        $wasDefault = $location->is_default;
        $location->delete();

        if ($wasDefault) {
            PosLocation::owned($owner)->orderBy('id')->first()?->update(['is_default' => true]);
        }

        if ((int) $request->session()->get('ladill_pos_location') === (int) $location->id) {
            $request->session()->forget('ladill_pos_location');
        }

        return redirect()->route('pos.settings')->withFragment('branches')->with('success', 'Branch removed.');
    }

    public function switch(Request $request): RedirectResponse
    {
        $owner = $this->ownerRef($request);
        $data = $request->validate([
            'location' => [
                'required',
                'integer',
                Rule::exists('pos_locations', 'id')->where('owner_ref', $owner),
            ],
        ]);

        $this->locations->switch($request, (int) $data['location']);

        return back()->with('success', 'Switched branch.');
    }

    private function guardManage(Request $request): ?RedirectResponse
    {
        $owner = $this->ownerRef($request);

        if (! app(\App\Services\Pos\PosMemberResolver::class)->canManageBranches(
            $this->posMember($request),
            $owner,
            $this->actor($request),
        )) {
            abort(403);
        }

        $account = ladill_account() ?? $request->user();
        if (! $this->subscriptions->canUseMultiLocation($account)) {
            return redirect()->route('pos.pro.index')
                ->with('upsell', 'Multi-branch POS requires Ladill POS Pro or Business.');
        }

        return null;
    }
}