<?php

namespace App\Http\Controllers\Api\Admin\Dashboard;

use App\Enums\TransactionStatus;
use App\Http\Controllers\Controller;
use App\Models\Customer;
use App\Models\Transaction;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class DashboardController extends Controller
{
    public function stats(): JsonResponse
    {
        $total_customers = Customer::count();

        $total_deposits = (float) Transaction::where('type', 'manual')
            ->where('status', TransactionStatus::COMPLETED->value)
            ->sum('amount');

        return response()->json([
            'error' => false,
            'data'  => [
                'total_customers' => $total_customers,
                'total_deposits'  => $total_deposits,
            ],
        ]);
    }

    public function monthlyStats(Request $request): JsonResponse
    {
        $year = $request->integer('year', now()->year);

        $deposits = Transaction::where('type', 'manual')
            ->where('status', TransactionStatus::COMPLETED->value)
            ->whereYear('created_at', $year)
            ->selectRaw('MONTH(created_at) as month, SUM(amount) as total_deposits')
            ->groupBy('month')
            ->pluck('total_deposits', 'month');

        $newCustomers = Customer::whereYear('created_at', $year)
            ->selectRaw('MONTH(created_at) as month, COUNT(*) as new_customers')
            ->groupBy('month')
            ->pluck('new_customers', 'month');

        $months = ['T1', 'T2', 'T3', 'T4', 'T5', 'T6', 'T7', 'T8', 'T9', 'T10', 'T11', 'T12'];

        $data = collect(range(1, 12))->map(function ($m) use ($months, $deposits, $newCustomers) {
            return [
                'month'         => $months[$m - 1],
                'deposits'      => (float) ($deposits[$m] ?? 0),
                'new_customers' => (int) ($newCustomers[$m] ?? 0),
            ];
        })->values();

        return response()->json([
            'error' => false,
            'data'  => $data,
        ]);
    }

    public function latestCustomers(): JsonResponse
    {
        $customers = Customer::orderByDesc('created_at')
            ->limit(5)
            ->get(['id', 'uuid', 'fullname', 'email', 'total', 'created_at']);

        return response()->json([
            'error' => false,
            'data'  => [
                'items' => $customers->map(fn(Customer $c) => [
                    'id'         => $c->id,
                    'uuid'       => $c->uuid,
                    'fullname'   => $c->fullname,
                    'email'      => $c->email,
                    'total'      => (float) $c->total,
                    'created_at' => $c->created_at?->toISOString(),
                ])->values(),
                'total' => Customer::count(),
            ],
        ]);
    }
}