<?php

namespace Modules\Lead\App\Http\Controllers\Api\Admin;

use App\Http\Controllers\Controller;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Validation\Rule;
use Modules\Lead\App\Http\Requests\LeadRequest;
use Modules\Lead\App\Http\Resources\LeadResource;
use Modules\Lead\App\Models\Lead;

class LeadController extends Controller
{
    public function index(Request $request): JsonResponse
    {
        $request->validate(['date_from' => 'nullable|date', 'date_to' => 'nullable|date']);

        $leads = Lead::query()
            ->with('customer:id,uuid,fullname,email')
            ->search($request->input('filter'))
            ->when($request->filled('status'), fn ($query) => $query->where('status', $request->input('status')))
            ->when($request->filled('source'), fn ($query) => $query->where('source', $request->input('source')))
            ->when($request->input('linked') === '1', fn ($query) => $query->whereNotNull('customer_id'))
            ->when($request->input('linked') === '0', fn ($query) => $query->whereNull('customer_id'))
            ->when($request->filled('date_from'), fn ($query) => $query->whereDate('created_at', '>=', $request->input('date_from')))
            ->when($request->filled('date_to'), fn ($query) => $query->whereDate('created_at', '<=', $request->input('date_to')))
            ->orderByDesc('id')
            ->paginate(min(max((int) $request->input('per_page', 20), 1), 100));

        return response()->json([
            'error' => false,
            'data' => [
                'items' => LeadResource::collection($leads->items()),
                'total' => $leads->total(),
                'per_page' => $leads->perPage(),
                'current_page' => $leads->currentPage(),
                'last_page' => $leads->lastPage(),
            ],
        ]);
    }

    public function show(string $uuid): JsonResponse
    {
        return response()->json(['error' => false, 'data' => new LeadResource($this->find($uuid)->load('customer:id,uuid,fullname,email'))]);
    }

    public function store(LeadRequest $request): JsonResponse
    {
        $lead = Lead::create($request->validated());

        return response()->json(['error' => false, 'message' => 'Đã thêm khách tiềm năng.', 'data' => new LeadResource($lead->load('customer:id,uuid,fullname,email'))], 201);
    }

    public function update(string $uuid, LeadRequest $request): JsonResponse
    {
        $lead = $this->find($uuid);
        $lead->update($request->validated());

        return response()->json(['error' => false, 'message' => 'Đã cập nhật khách tiềm năng.', 'data' => new LeadResource($lead->load('customer:id,uuid,fullname,email'))]);
    }

    public function destroy(string $uuid): JsonResponse
    {
        $this->find($uuid)->delete();

        return response()->json(['error' => false, 'message' => 'Đã xoá khách tiềm năng.']);
    }

    public function bulkDestroy(Request $request): JsonResponse
    {
        $uuids = $this->bulkUuids($request);
        $deleted = Lead::query()->whereIn('uuid', $uuids)->delete();

        return response()->json(['error' => false, 'message' => "Đã xoá {$deleted} khách tiềm năng.", 'data' => ['affected' => $deleted]]);
    }

    public function bulkStatus(Request $request): JsonResponse
    {
        $status = $request->validate(['status' => ['required', Rule::in(Lead::STATUSES)]])['status'];
        $updated = Lead::query()->whereIn('uuid', $this->bulkUuids($request))->update(['status' => $status, 'updated_at' => now()]);

        return response()->json(['error' => false, 'message' => "Đã cập nhật trạng thái cho {$updated} khách tiềm năng.", 'data' => ['affected' => $updated]]);
    }

    /**
     * @return array<int, string>
     */
    private function bulkUuids(Request $request): array
    {
        return $request->validate([
            'uuids' => ['required', 'array', 'min:1', 'max:500'],
            'uuids.*' => ['required', 'string', 'max:36'],
        ])['uuids'];
    }

    private function find(string $uuid): Lead
    {
        return Lead::query()->where('uuid', $uuid)->firstOrFail();
    }
}