<?php

namespace Database\Seeders;

use App\Models\Project;
use App\Models\Product;
use App\Models\Customer;
use App\Models\Contract;
use App\Models\PaymentTemplate;
use App\Models\PaymentSchedule;
use App\Models\PaymentScheduleItem;
use App\Models\Payment;
use App\Models\Appendix;
use App\Models\Settlement;
use App\Enums\ProductType;
use App\Enums\PaymentType;
use Illuminate\Database\Seeder;
use Carbon\Carbon;
use Illuminate\Support\Facades\DB;

class TestDataSeeder extends Seeder
{
    public function run(): void
    {
        DB::transaction(function () {
            // 1. PROJECT
            $sth03 = Project::factory()->create(['code' => 'STH03', 'name' => 'Khu Riverside STH03']);
            $diamond = Project::factory()->create(['code' => 'DIA21', 'name' => 'Diamond Luxury Suites']);

            // 2. PAYMENT TEMPLATES
            $templateStandard = PaymentTemplate::create([
                'project_id' => $sth03->id,
                'name' => 'Thanh toán chuẩn STH03',
                'is_default' => true
            ]);

            $this->createTemplateItems($templateStandard);

            // 3. PRODUCTS
            $this->seedProducts($sth03, $diamond);

            // 4. CUSTOMERS
            $customers = Customer::factory(15)->create();

            // 5. CASE STUDY: LỊCH SỬ CHUYỂN NHƯỢNG
            $this->seedTransferHistory($sth03, $customers);

            // 6. CASE STUDY: DÒNG TIỀN PHỨC TẠP
            $this->seedComplexPayments($sth03, $customers, $templateStandard);
        });
    }

    private function createTemplateItems($template)
    {
        PaymentScheduleItem::create(['template_id' => $template->id, 'installment_no' => 1, 'percentage' => 30, 'days_after_signing' => 7, 'type' => PaymentType::QSDD]);
        PaymentScheduleItem::create(['template_id' => $template->id, 'installment_no' => 2, 'percentage' => 40, 'days_after_previous' => 60, 'type' => PaymentType::MONG]);
        PaymentScheduleItem::create(['template_id' => $template->id, 'installment_no' => 3, 'percentage' => 30, 'days_after_previous' => 90, 'type' => PaymentType::THAN]);
    }

    private function seedProducts($project1, $project2)
    {
        for ($i = 1; $i <= 5; $i++) {
            Product::create([
                'project_id' => $project1->id,
                'product_type' => ProductType::LAND,
                'code' => $project1->code . '.' . sprintf('%02d', $i),
                'area' => 100 + $i,
                'price_per_unit' => 50000000,
                'total_price' => (100 + $i) * 50000000,
                'qsdd_value' => ((100 + $i) * 50000000) * 0.4,
                'adjacent_road' => 'Đường 16m',
                'frontage_count' => 1,
                'infrastructure_status' => [
                    'dien' => ['status' => 'Hoàn thiện', 'child' => ['tram_bien_ap' => 'Đã nghiệm thu']],
                    'nuoc' => ['status' => 'Đang thi công']
                ],
                'custom_data' => ['so_lo' => 'Lô '.$i, 'huong' => 'Đông Nam'],
                'status' => 'Đang mở bán'
            ]);
        }

        for ($i = 1; $i <= 5; $i++) {
            Product::create([
                'project_id' => $project2->id,
                'product_type' => ProductType::APARTMENT,
                'code' => $project2->code . '-P' . sprintf('%03d', $i),
                'area' => 75,
                'price_per_unit' => 40000000,
                'total_price' => 75 * 40000000,
                'infrastructure_status' => ['thang_may' => 'Schindler', 'pccc' => 'Đạt chuẩn'],
                'custom_data' => ['block' => 'A', 'floor' => 10 + $i, 'view' => 'City View'],
                'status' => 'Đang mở bán'
            ]);
        }
    }

    private function seedTransferHistory($project, $customers)
    {
        $product = Product::where('code', 'STH03.01')->first();
        
        $c1 = Contract::create([
            'product_id' => $product->id, 'transfer_order' => 1, 'contract_type' => 'HĐMB', 'contract_number' => 'HĐMB-GOC-88',
            'signing_date' => Carbon::now()->subYears(2), 'total_value' => $product->total_price, 'paid_amount' => $product->total_price, 'status' => 'Đã chuyển nhượng'
        ]);
        $customers[0]->contracts()->attach($c1->id, ['role' => 'CHỦ CŨ', 'transfer_order' => 1]);

        // SỬA TỪ customData THÀNH custom_data
        Appendix::create([
            'contract_id' => $c1->id, 'product_id' => $product->id, 'type' => 'Thay đổi diện tích', 'apply_from_order' => 1, 'signing_date' => Carbon::now()->subYears(1),
            'custom_data' => ['area_new' => 105]
        ]);

        $c2 = Contract::create([
            'product_id' => $product->id, 'transfer_order' => 0, 'contract_type' => 'VBCN', 'contract_number' => 'VBCN-F1-99',
            'signing_date' => Carbon::now(), 'total_value' => $product->total_price * 1.15, 'paid_amount' => 500000000, 'status' => 'Đang hiệu lực'
        ]);
        $customers[1]->contracts()->attach($c2->id, ['role' => 'CHỦ SỞ HỮU', 'transfer_order' => 0]);
        
        $product->update(['status' => 'Đã bán']);
    }

    private function seedComplexPayments($project, $customers, $template)
    {
        $product = Product::where('code', 'STH03.02')->first();
        $contract = Contract::create([
            'product_id' => $product->id, 'transfer_order' => 0, 'contract_type' => 'HĐMB', 'contract_number' => 'HD-PAY-DEBUG',
            'signing_date' => Carbon::now()->subDays(10), 'total_value' => $product->total_price, 'status' => 'Đang hiệu lực'
        ]);
        $customers[5]->contracts()->attach($contract->id, ['role' => 'CHỦ SỞ HỮU', 'transfer_order' => 0]);

        $schedule = PaymentSchedule::create(['contract_id' => $contract->id, 'template_id' => $template->id]);
        $items = $template->items;
        foreach($items as $item) {
            $si = PaymentScheduleItem::create([
                'schedule_id' => $schedule->id, 'installment_no' => $item->installment_no, 'percentage' => $item->percentage,
                'amount' => $contract->total_value * ($item->percentage / 100), 'type' => $item->type, 'due_date' => Carbon::now()->addDays(30 * $item->installment_no)
            ]);

            if ($item->installment_no == 1) {
                $required = $si->amount;
                $paid = $required * 1.2; 
                Payment::create(['contract_id' => $contract->id, 'schedule_item_id' => $si->id, 'amount' => $paid, 'paid_date' => Carbon::now(), 'method' => 'Chuyển khoản']);
                
                $contract->update([
                    'paid_amount' => $paid,
                    'excess_amount' => $paid - $required,
                    'remaining_amount' => $contract->total_value - $paid
                ]);
            }
        }
    }
}