<?php

namespace App\Http\Controllers\Web\Admin;

use App\Http\Controllers\Controller;
use App\Models\MetrikaGroup;
use App\Models\MetrikaGroupItem;
use App\Models\MetrikaItem;
use Illuminate\Http\Request;
use Illuminate\Support\Str;
use Inertia\Inertia;

class MetrikaController extends Controller
{
    public function index()
    {
        abort_unless(auth()->user()->isAdmin(), 403);

        $groups = MetrikaGroup::withCount('groupItems')->get()->map(fn($g) => [
            'id'          => $g->metrika_group_id,
            'name'        => $g->name,
            'description' => $g->description,
            'items_count' => $g->group_items_count,
        ]);

        $items = MetrikaItem::all()->map(fn($i) => [
            'id'          => $i->metrika_item_id,
            'name'        => $i->name,
            'description' => $i->description,
            'data_type'   => $i->data_type,
            'is_active'   => $i->is_active,
            'code'        => $i->code,
        ]);

        return Inertia::render('Admin/Metrics/Index', [
            'groups' => $groups,
            'items'  => $items,
        ]);
    }

    // ── Группы ──

    public function createGroup()
    {
        abort_unless(auth()->user()->isAdmin(), 403);

        return Inertia::render('Admin/Metrics/Group', [
            'group'    => null,
            'itemIds'  => [],
            'allItems' => $this->allItems(),
        ]);
    }

    public function storeGroup(Request $request)
    {
        abort_unless(auth()->user()->isAdmin(), 403);

        $validated = $request->validate([
            'name'        => 'required|string|max:255',
            'description' => 'nullable|string',
            'items'       => 'array',
            'items.*'     => 'integer|exists:metrika_items,metrika_item_id',
        ]);

        $group = MetrikaGroup::create([
            'name'        => $validated['name'],
            'description' => $validated['description'] ?? null,
        ]);

        foreach ($validated['items'] ?? [] as $itemId) {
            MetrikaGroupItem::create([
                'rf_metrika_group_id' => $group->metrika_group_id,
                'rf_metrika_item_id'  => $itemId,
            ]);
        }

        return redirect('/admin/metrics')->with('success', 'Группа создана');
    }

    public function showGroup(MetrikaGroup $group)
    {
        abort_unless(auth()->user()->isAdmin(), 403);

        $itemIds = MetrikaGroupItem::where('rf_metrika_group_id', $group->metrika_group_id)
            ->pluck('rf_metrika_item_id')
            ->toArray();

        return Inertia::render('Admin/Metrics/Group', [
            'group'    => ['id' => $group->metrika_group_id, 'name' => $group->name, 'description' => $group->description],
            'itemIds'  => $itemIds,
            'allItems' => $this->allItems(),
        ]);
    }

    public function updateGroup(MetrikaGroup $group, Request $request)
    {
        abort_unless(auth()->user()->isAdmin(), 403);

        $validated = $request->validate([
            'name'        => 'required|string|max:255',
            'description' => 'nullable|string',
            'items'       => 'array',
            'items.*'     => 'integer|exists:metrika_items,metrika_item_id',
        ]);

        $group->update([
            'name'        => $validated['name'],
            'description' => $validated['description'] ?? null,
        ]);

        MetrikaGroupItem::where('rf_metrika_group_id', $group->metrika_group_id)->delete();
        foreach ($validated['items'] ?? [] as $itemId) {
            MetrikaGroupItem::create([
                'rf_metrika_group_id' => $group->metrika_group_id,
                'rf_metrika_item_id'  => $itemId,
            ]);
        }

        return redirect('/admin/metrics')->with('success', 'Группа сохранена');
    }

    // ── Показатели ──

    public function createItem()
    {
        abort_unless(auth()->user()->isAdmin(), 403);

        return Inertia::render('Admin/Metrics/Item', ['item' => null]);
    }

    public function storeItem(Request $request)
    {
        abort_unless(auth()->user()->isAdmin(), 403);

        $validated = $request->validate([
            'name'          => 'required|string|max:255',
            'description'   => 'nullable|string',
            'data_type'     => 'required|string|in:integer,float,string,text,boolean,select',
            'is_active'     => 'required|boolean',
            'is_required'   => 'boolean',
            'default_value' => 'nullable|string',
            'placeholder'   => 'nullable|string',
        ]);

        MetrikaItem::create([
            ...$validated,
            'code' => Str::slug($validated['name']),
        ]);

        return redirect('/admin/metrics')->with('success', 'Показатель создан');
    }

    public function showItem(MetrikaItem $item)
    {
        abort_unless(auth()->user()->isAdmin(), 403);

        return Inertia::render('Admin/Metrics/Item', [
            'item' => [
                'id'            => $item->metrika_item_id,
                'name'          => $item->name,
                'description'   => $item->description,
                'data_type'     => $item->data_type,
                'is_active'     => $item->is_active,
                'is_required'   => $item->is_required,
                'default_value' => $item->default_value,
                'placeholder'   => $item->placeholder,
                'code'          => $item->code,
            ],
        ]);
    }

    public function updateItem(MetrikaItem $item, Request $request)
    {
        abort_unless(auth()->user()->isAdmin(), 403);

        $validated = $request->validate([
            'name'          => 'required|string|max:255',
            'description'   => 'nullable|string',
            'data_type'     => 'required|string|in:integer,float,string,text,boolean,select',
            'is_active'     => 'required|boolean',
            'is_required'   => 'boolean',
            'default_value' => 'nullable|string',
            'placeholder'   => 'nullable|string',
        ]);

        $item->update($validated);

        return redirect('/admin/metrics')->with('success', 'Показатель сохранён');
    }

    private function allItems(): array
    {
        return MetrikaItem::where('is_active', true)->get()->map(fn($i) => [
            'metrika_item_id' => $i->metrika_item_id,
            'name'            => $i->name,
            'data_type'       => $i->data_type,
        ])->toArray();
    }
}