<?php

namespace App\Http\Controllers\Qms;

use App\Http\Controllers\Controller;
use App\Http\Controllers\Qms\Concerns\ScopesToAccount;
use App\Models\QueueRule;
use App\Models\ServiceQueue;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class QueueRuleController extends Controller
{
    use ScopesToAccount;

    public function index(Request $request, ServiceQueue $serviceQueue): View
    {
        $this->authorizeAbility($request, 'rules.view');
        $this->authorizeOwner($request, $serviceQueue);

        $rules = QueueRule::owned($this->ownerRef($request))
            ->where('service_queue_id', $serviceQueue->id)
            ->orderBy('sort_order')
            ->get();

        return view('qms.rules.index', [
            'queue' => $serviceQueue,
            'rules' => $rules,
            'ruleTypes' => config('qms.rule_types'),
        ]);
    }

    public function store(Request $request, ServiceQueue $serviceQueue): RedirectResponse
    {
        $this->authorizeAbility($request, 'rules.manage');
        $this->authorizeOwner($request, $serviceQueue);

        $validated = $request->validate([
            'rule_type' => ['required', 'string', 'in:'.implode(',', array_keys(config('qms.rule_types')))],
            'waiting_threshold' => ['nullable', 'integer', 'min:1'],
            'overflow_queue_id' => ['nullable', 'exists:queue_service_queues,id'],
            'priority' => ['nullable', 'string', 'in:'.implode(',', array_keys(config('qms.ticket_priorities')))],
            'source' => ['nullable', 'string'],
        ]);

        $conditions = [];
        $actions = [];

        if ($validated['rule_type'] === 'overflow') {
            $conditions['waiting_threshold'] = (int) ($validated['waiting_threshold'] ?? 10);
            $actions['overflow_queue_id'] = $validated['overflow_queue_id'] ?? null;
        } elseif ($validated['rule_type'] === 'priority_boost') {
            $conditions['source'] = $validated['source'] ?? null;
            $actions['priority'] = $validated['priority'] ?? 'vip';
        }

        QueueRule::create([
            'owner_ref' => $this->ownerRef($request),
            'service_queue_id' => $serviceQueue->id,
            'rule_type' => $validated['rule_type'],
            'conditions' => $conditions,
            'actions' => $actions,
            'sort_order' => QueueRule::where('service_queue_id', $serviceQueue->id)->max('sort_order') + 1,
            'is_active' => true,
        ]);

        return back()->with('success', 'Rule added.');
    }

    public function destroy(Request $request, ServiceQueue $serviceQueue, QueueRule $rule): RedirectResponse
    {
        $this->authorizeAbility($request, 'rules.manage');
        $this->authorizeOwner($request, $serviceQueue);
        abort_unless($rule->service_queue_id === $serviceQueue->id, 404);

        $rule->delete();

        return back()->with('success', 'Rule removed.');
    }
}