<?php

namespace App\Http\Controllers;

use App\Models\ChecklistTemplate;
use Illuminate\Http\Request;

class ChecklistTemplateController extends Controller
{
    public function index()
    {
        $this->authorize('viewAny', ChecklistTemplate::class);

        $templates = ChecklistTemplate::withCount('sections')->orderByDesc('is_active')->orderBy('name')->get();

        return view('checklist.templates.index', compact('templates'));
    }

    public function create()
    {
        $this->authorize('create', ChecklistTemplate::class);

        return view('checklist.templates.create', ['template' => new ChecklistTemplate(['version' => '1.0'])]);
    }

    public function store(Request $request)
    {
        $this->authorize('create', ChecklistTemplate::class);

        $data = $request->validate([
            'name' => ['required', 'string', 'max:255'],
            'version' => ['required', 'string', 'max:50'],
            'description' => ['nullable', 'string', 'max:1000'],
            'is_active' => ['nullable', 'boolean'],
        ]);

        $template = ChecklistTemplate::create([
            'name' => $data['name'],
            'version' => $data['version'],
            'description' => $data['description'] ?? null,
            'is_active' => $request->boolean('is_active'),
        ]);

        if ($template->is_active) {
            ChecklistTemplate::where('id', '!=', $template->id)->update(['is_active' => false]);
        }

        return redirect()->route('checklist-templates.builder', $template)
            ->with('success', 'Templat dicipta. Sila bina seksyen dan item.');
    }

    /** Skrin pembina templat (seksyen, skop, item, formula). */
    public function builder(ChecklistTemplate $checklistTemplate)
    {
        $this->authorize('view', $checklistTemplate);

        $checklistTemplate->load([
            'sections.scopes',
            'sections.items.scope',
            'sections.formula',
            'formulas',
        ]);

        return view('checklist.templates.builder', ['template' => $checklistTemplate]);
    }

    public function update(Request $request, ChecklistTemplate $checklistTemplate)
    {
        $this->authorize('update', $checklistTemplate);

        $data = $request->validate([
            'name' => ['required', 'string', 'max:255'],
            'version' => ['required', 'string', 'max:50'],
            'description' => ['nullable', 'string', 'max:1000'],
            'is_active' => ['nullable', 'boolean'],
        ]);

        $checklistTemplate->update([
            'name' => $data['name'],
            'version' => $data['version'],
            'description' => $data['description'] ?? null,
            'is_active' => $request->boolean('is_active'),
        ]);

        if ($checklistTemplate->is_active) {
            ChecklistTemplate::where('id', '!=', $checklistTemplate->id)->update(['is_active' => false]);
        }

        return back()->with('success', 'Templat dikemas kini.');
    }

    public function activate(ChecklistTemplate $checklistTemplate)
    {
        $this->authorize('update', $checklistTemplate);

        ChecklistTemplate::query()->update(['is_active' => false]);
        $checklistTemplate->update(['is_active' => true]);

        return back()->with('success', 'Templat ditetapkan sebagai aktif.');
    }

    public function destroy(ChecklistTemplate $checklistTemplate)
    {
        $this->authorize('delete', $checklistTemplate);

        $checklistTemplate->delete();

        return redirect()->route('checklist-templates.index')->with('success', 'Templat dipadam.');
    }
}