<?php

namespace Tests\Unit\EcommerceFinance;

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;
use Modules\EcommerceFinance\Repositories\TaobaoWechatOpeningBalanceRepository;
use Modules\EcommerceFinance\Support\TaobaoWechatBackofficeJuneEndingBalances;
use Tests\TestCase;

class TaobaoWechatOpeningBalanceRepositoryTest extends TestCase
{
    protected function setUp(): void
    {
        parent::setUp();

        config([
            'database.connections.business_mirror' => [
                'driver' => 'sqlite',
                'database' => ':memory:',
                'prefix' => '',
            ],
            'upstream_mirrors.connection' => 'business_mirror',
        ]);
        DB::purge('business_mirror');
        $this->createTables();
    }

    public function test_july_opening_uses_the_june_ending_balance(): void
    {
        $this->insertOpening('淘系微信一店', '669385.40');

        $result = app(TaobaoWechatOpeningBalanceRepository::class)
            ->openingBalance('淘系微信一店', '2026-07-01');

        $this->assertSame(669385.4, $result['balance']);
        $this->assertSame('2026-06-30', $result['date']);
        $this->assertSame(TaobaoWechatBackofficeJuneEndingBalances::SOURCE, $result['source']);
        $this->assertSame(1, $result['store_count']);
    }

    public function test_later_periods_carry_the_opening_balance_forward(): void
    {
        $this->insertOpening('淘系微信一店', '100.00');
        $this->insertBill('淘系微信一店', '2026-07-05 10:00:00', '50.00', '20.00');
        $this->insertBill('淘系微信一店', '2026-08-02 10:00:00', '10.00', '5.00');

        $result = app(TaobaoWechatOpeningBalanceRepository::class)
            ->openingBalance('淘系微信一店', '2026-08-01');

        $this->assertSame(130.0, $result['balance']);
        $this->assertSame('2026-07-31', $result['date']);
        $this->assertSame(
            TaobaoWechatBackofficeJuneEndingBalances::SOURCE . '_carried_forward',
            $result['source'],
        );
    }

    public function test_all_store_openings_are_summed_when_no_store_is_selected(): void
    {
        $this->insertOpening('淘系微信一店', '100.00');
        $this->insertOpening('淘系微信二店', '200.25');

        $result = app(TaobaoWechatOpeningBalanceRepository::class)
            ->openingBalance(null, '2026-07-01');

        $this->assertSame(300.25, $result['balance']);
        $this->assertSame(2, $result['store_count']);
    }

    public function test_backoffice_dataset_contains_the_twenty_one_confirmed_store_balances(): void
    {
        $balances = TaobaoWechatBackofficeJuneEndingBalances::balances();
        $totalCents = array_sum(array_map(
            static fn (string $balance): int => (int) round((float) $balance * 100),
            array_values($balances),
        ));

        $this->assertCount(21, $balances);
        $this->assertSame(81463042, $totalCents);
        $this->assertSame('27846.22', $balances['天猫-HX旗舰店101']);
        $this->assertSame('290881.84', $balances['天猫-亿家达旗舰店']);
        $this->assertSame('5155.88', $balances['天猫-亿家达宜彩专卖店']);
        $this->assertSame('86802.00', $balances['淘宝-全颐家具工厂店']);
    }

    public function test_missing_opening_balance_is_unavailable(): void
    {
        $result = app(TaobaoWechatOpeningBalanceRepository::class)
            ->openingBalance('未录入店铺', '2026-07-01');

        $this->assertNull($result['balance']);
        $this->assertNull($result['date']);
        $this->assertSame('unavailable', $result['source']);
        $this->assertSame(0, $result['store_count']);
    }

    private function createTables(): void
    {
        $schema = Schema::connection('business_mirror');
        $schema->create(TaobaoWechatOpeningBalanceRepository::TABLE, function (Blueprint $table): void {
            $table->id();
            $table->date('balance_date');
            $table->string('store_name', 191);
            $table->decimal('balance', 20, 2);
            $table->string('source', 191);
            $table->text('source_note')->nullable();
            $table->timestamp('imported_at');
            $table->timestamps();
            $table->unique(['balance_date', 'store_name']);
        });
        $schema->create('taobao_wechat_bill_rows', function (Blueprint $table): void {
            $table->string('record_code', 191)->primary();
            $table->string('store_name')->nullable();
            $table->dateTime('occurred_at');
            $table->decimal('income_amount', 20, 2);
            $table->decimal('expense_amount', 20, 2);
        });
    }

    private function insertOpening(string $storeName, string $balance): void
    {
        DB::connection('business_mirror')->table(TaobaoWechatOpeningBalanceRepository::TABLE)->insert([
            'balance_date' => '2026-06-30',
            'store_name' => $storeName,
            'balance' => $balance,
            'source' => TaobaoWechatBackofficeJuneEndingBalances::SOURCE,
            'source_note' => TaobaoWechatBackofficeJuneEndingBalances::SOURCE_NOTE,
            'imported_at' => '2026-11-09 10:00:00',
        ]);
    }

    private function insertBill(
        string $storeName,
        string $occurredAt,
        string $income,
        string $expense,
    ): void {
        static $sequence = 0;
        $sequence++;
        DB::connection('business_mirror')->table('taobao_wechat_bill_rows')->insert([
            'record_code' => 'TEST-' . $sequence,
            'store_name' => $storeName,
            'occurred_at' => $occurredAt,
            'income_amount' => $income,
            'expense_amount' => $expense,
        ]);
    }
}