<?php

namespace App\Http\Controllers;

use App\Models\BowlerChart;
use App\Models\Group;
use App\Support\BowlerGrid;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class BowlerChartController extends Controller
{
    public function index(Request $request): View
    {
        $user = $request->user();

        $charts = $user->isAdmin()
            ? BowlerChart::with('group')->get()
            : BowlerChart::with('group')
                ->whereIn('group_id', $user->groups()->select('groups.id'))
                ->get();

        return view('charts.index', [
            'chartsByGroup' => $charts->sortBy('name')->groupBy(fn ($c) => $c->group->name)->sortKeys(),
        ]);
    }

    public function create(Request $request): View
    {
        return view('charts.create', [
            'groups' => $this->manageableGroups($request),
        ]);
    }

    public function store(Request $request): RedirectResponse
    {
        $data = $request->validate([
            'group_id' => ['required', 'integer', 'exists:groups,id'],
            'name' => ['required', 'string', 'max:255'],
            'description' => ['nullable', 'string', 'max:500'],
        ]);

        if (! $request->user()->isAdmin() && ! $request->user()->ownsGroup((int) $data['group_id'])) {
            abort(403, 'You must be an owner of the group to create charts in it.');
        }

        $chart = BowlerChart::create($data);

        return redirect()
            ->route('charts.show', $chart)
            ->with('status', "Bowler chart \"{$chart->name}\" created.");
    }

    public function show(BowlerChart $chart): View
    {
        $this->authorize('view', $chart);

        return view('charts.show', [
            'chart' => $chart,
            'months' => BowlerGrid::months(),
            'groupedRows' => BowlerGrid::groupedRows($chart->visibleKpis(), $chart->visibleProjects()),
        ]);
    }

    public function edit(BowlerChart $chart): View
    {
        $this->authorize('update', $chart);

        return view('charts.edit', ['chart' => $chart]);
    }

    public function update(Request $request, BowlerChart $chart): RedirectResponse
    {
        $this->authorize('update', $chart);

        $data = $request->validate([
            'name' => ['required', 'string', 'max:255'],
            'description' => ['nullable', 'string', 'max:500'],
        ]);

        $chart->update($data);

        return redirect()
            ->route('charts.show', $chart)
            ->with('status', "Bowler chart \"{$chart->name}\" updated.");
    }

    public function destroy(BowlerChart $chart): RedirectResponse
    {
        $this->authorize('delete', $chart);

        $name = $chart->name;
        $chart->delete();

        return redirect()
            ->route('charts.index')
            ->with('status', "Bowler chart \"{$name}\" deleted.");
    }

    /**
     * The user's personal bowler chart: all of their own items, always available.
     */
    public function personal(Request $request): View
    {
        return view('charts.personal', [
            'months' => BowlerGrid::months(),
            'groupedRows' => BowlerGrid::groupedRows(
                $request->user()->kpis()->get(),
                $request->user()->projects()->get(),
            ),
        ]);
    }

    private function manageableGroups(Request $request)
    {
        $user = $request->user();

        return $user->isAdmin()
            ? Group::orderBy('name')->get()
            : $user->groups()->wherePivot('role', 'owner')->get();
    }
}