<?php

namespace Tests\Feature\Business;

use App\Models\Auth\Permission;
use App\Models\Auth\Role;
use App\Models\Business\CourierQuoteChange;
use App\Models\Business\CourierQuoteVersion;
use App\Support\QuoteManagementSnapshot;
use Tests\Feature\FeatureTestCase;

class CourierQuoteChangeWorkflowTest extends FeatureTestCase
{
    private string $fixturePath;

    protected function setUp(): void
    {
        parent::setUp();

        $this->fixturePath = storage_path('framework/testing/courier-quote-change-' . uniqid('', true) . '.json');
        file_put_contents($this->fixturePath, json_encode([
            'sourcePath' => 'C:/private/报价单合并.xlsx',
            'sheets' => [[
                'index' => 0,
                'name' => '新北中通报价',
                'address' => 'A1:D3',
                'values' => [
                    ['省份', '面单', '续重', '备注'],
                    ['广东省', 5.0, 1.2, null],
                    ['江苏省', 4.0, 1.0, null],
                ],
                'formulas' => [[], [], []],
            ]],
        ], JSON_UNESCAPED_UNICODE | JSON_THROW_ON_ERROR));

        app()->instance(QuoteManagementSnapshot::class, new QuoteManagementSnapshot($this->fixturePath));
        $this->user->attachPermission(Permission::where('name', 'read-admin-panel')->firstOrFail());
    }

    protected function tearDown(): void
    {
        if (isset($this->fixturePath) && is_file($this->fixturePath)) {
            unlink($this->fixturePath);
        }

        parent::tearDown();
    }

    public function test_user_can_save_real_quote_change_draft_and_open_history(): void
    {
        $response = $this->loginAs()->post(route('business.courier-quote-changes.store'), $this->validPayload());

        $change = CourierQuoteChange::with(['items', 'events'])->firstOrFail();

        $response->assertRedirect(route('business.courier-quote-changes.edit', $change));
        $this->assertSame('BG-' . now()->format('Ymd') . '-001', $change->number);
        $this->assertSame(CourierQuoteChange::STATUS_DRAFT, $change->status);
        $this->assertFalse($change->isRetrospective());
        $this->assertSame(CourierQuoteChange::RECALCULATION_NOT_REQUIRED, $change->recalculation_status);
        $this->assertSame('新北中通', $change->carrier_name);
        $this->assertCount(1, $change->items);
        $this->assertSame('5.0000', $change->items->first()->original_amount);
        $this->assertSame('6.0000', $change->items->first()->new_amount);
        $this->assertSame('created', $change->events->first()->event_type);

        $this->loginAs()->get(route('business.courier-quote-changes.index'))
            ->assertOk()
            ->assertSeeText($change->number)
            ->assertSeeText('新北中通')
            ->assertSeeText('草稿');
    }

    public function test_create_page_shows_structured_price_editor_and_excludes_formula_cells(): void
    {
        $this->loginAs()->get(route('business.courier-quote-changes.create', ['source_quote_id' => 'QB-001']))
            ->assertOk()
            ->assertSeeText('第一步：选择原报价')
            ->assertSeeText('第三步：编辑新价格')
            ->assertSeeText('批量方式')
            ->assertSeeText('原价格')
            ->assertSeeText('新价格')
            ->assertSee('data-price-row', false)
            ->assertSee('name="items[0][new_amount]"', false)
            ->assertSee('data-effective-date', false)
            ->assertDontSee('type="date" min=', false)
            ->assertSeeText('生效日期可以早于今天')
            ->assertSeeText('保存草稿');
    }

    public function test_historical_effective_date_can_be_saved_and_submitted_for_retrospective_recalculation(): void
    {
        $payload = $this->validPayload();
        $payload['effective_date'] = now()->subMonths(2)->startOfMonth()->toDateString();

        $this->loginAs()->post(route('business.courier-quote-changes.store'), $payload)
            ->assertRedirect();

        $change = CourierQuoteChange::firstOrFail();
        $this->assertSame($payload['effective_date'], $change->effective_date->toDateString());
        $this->assertTrue($change->isRetrospective());
        $this->assertSame(CourierQuoteChange::RECALCULATION_PENDING, $change->recalculation_status);
        $this->assertNull($change->recalculation_note);

        $this->loginAs()->post(route('business.courier-quote-changes.submit', $change))
            ->assertRedirect(route('business.courier-quote-changes.show', $change));

        $change->refresh();
        $this->assertSame(CourierQuoteChange::STATUS_PENDING_REVIEW, $change->status);
        $this->assertTrue($change->isRetrospective());
        $this->assertSame(CourierQuoteChange::RECALCULATION_PENDING, $change->recalculation_status);

        $this->loginAs()->get(route('business.courier-quote-changes.show', $change))
            ->assertOk()
            ->assertSeeText('追溯变价 · 待追溯核算')
            ->assertSeeText('原运费和原始 Excel 保持不变');
    }

    public function test_invalid_or_unchanged_amount_is_rejected_without_saving_partial_data(): void
    {
        $payload = $this->validPayload();
        $payload['items'][0]['new_amount'] = '5.0000';

        $this->withExceptionHandling()->loginAs()->post(route('business.courier-quote-changes.store'), $payload)
            ->assertSessionHasErrors('items');

        $this->assertDatabaseCount('business_courier_quote_changes', 0);
        $this->assertDatabaseCount('business_courier_quote_change_items', 0);

        $payload = $this->validPayload();
        $payload['items'][0]['original_amount'] = '4.5000';
        $this->withExceptionHandling()->loginAs()->post(route('business.courier-quote-changes.store'), $payload)
            ->assertSessionHasErrors('items.0.original_amount');
        $this->assertDatabaseCount('business_courier_quote_changes', 0);
    }

    public function test_formula_cell_cannot_be_changed_directly(): void
    {
        file_put_contents($this->fixturePath, json_encode([
            'sourcePath' => 'C:/private/报价单合并.xlsx',
            'sheets' => [[
                'index' => 0,
                'name' => '新北中通报价',
                'address' => 'A1:B2',
                'values' => [['省份', '面单'], ['广东省', 5.0]],
                'formulas' => [[], ['', '=2+3']],
            ]],
        ], JSON_UNESCAPED_UNICODE | JSON_THROW_ON_ERROR));

        $this->withExceptionHandling()->loginAs()
            ->post(route('business.courier-quote-changes.store'), $this->validPayload())
            ->assertSessionHasErrors('items.0.source_cell');

        $this->assertDatabaseCount('business_courier_quote_changes', 0);
    }

    public function test_submit_locks_draft_and_creator_cannot_approve_own_change(): void
    {
        $this->loginAs()->post(route('business.courier-quote-changes.store'), $this->validPayload());
        $change = CourierQuoteChange::firstOrFail();

        $this->loginAs()->post(route('business.courier-quote-changes.submit', $change))
            ->assertRedirect(route('business.courier-quote-changes.show', $change));

        $change->refresh();
        $this->assertSame(CourierQuoteChange::STATUS_PENDING_REVIEW, $change->status);
        $this->withExceptionHandling()->loginAs()->get(route('business.courier-quote-changes.edit', $change))->assertForbidden();
        $this->withExceptionHandling()->loginAs()->post(route('business.courier-quote-changes.approve', $change))
            ->assertSessionHasErrors('approval');
        $this->assertDatabaseCount('business_courier_quote_versions', 0);
    }

    public function test_different_admin_can_approve_and_generate_immutable_new_version(): void
    {
        $this->loginAs()->post(route('business.courier-quote-changes.store'), $this->validPayload());
        $change = CourierQuoteChange::firstOrFail();
        $this->loginAs()->post(route('business.courier-quote-changes.submit', $change));

        $reviewer = $this->createReviewer();

        $this->loginAs($reviewer, $this->company)
            ->post(route('business.courier-quote-changes.approve', $change))
            ->assertRedirect(route('business.courier-quote-changes.show', $change));

        $change->refresh();
        $version = CourierQuoteVersion::firstOrFail();
        $values = json_decode($version->values_json, true, 512, JSON_THROW_ON_ERROR);

        $this->assertSame(CourierQuoteChange::STATUS_APPROVED, $change->status);
        $this->assertSame('QB-002', $version->version_code);
        $this->assertSame('6.0000', $values[1][1]);
        $this->assertEquals(5.0, app(QuoteManagementSnapshot::class)->load()['quotes'][0]['values'][1][1]);
        $this->assertSame($reviewer->id, $change->approved_by);
        $this->assertSame('QB-002', app(QuoteManagementSnapshot::class)->load()['quotes'][1]['id']);
    }

    public function test_approving_historical_change_blocks_automatic_compensation_and_records_reason(): void
    {
        $payload = $this->validPayload();
        $payload['effective_date'] = now()->subMonths(2)->startOfMonth()->toDateString();

        $this->loginAs()->post(route('business.courier-quote-changes.store'), $payload);
        $change = CourierQuoteChange::firstOrFail();
        $this->loginAs()->post(route('business.courier-quote-changes.submit', $change));

        $this->loginAs($this->createReviewer(), $this->company)
            ->post(route('business.courier-quote-changes.approve', $change))
            ->assertRedirect(route('business.courier-quote-changes.show', $change))
            ->assertSessionHas('success', function (string $message): bool {
                return str_contains($message, '历史生效已登记') && str_contains($message, '补差核算尚未执行');
            });

        $change->refresh();
        $this->assertSame(CourierQuoteChange::STATUS_APPROVED, $change->status);
        $this->assertSame(CourierQuoteChange::RECALCULATION_BLOCKED, $change->recalculation_status);
        $this->assertStringContainsString('当前报价未提供可执行的运费计算方式', $change->recalculation_note);
        $this->assertStringContainsString('历史运费也未记录所用报价版本', $change->recalculation_note);
        $this->assertDatabaseCount('business_courier_quote_versions', 1);

        $approvalEvent = $change->events()->where('event_type', 'approved')->firstOrFail();
        $this->assertStringContainsString('补差明细尚未生成', $approvalEvent->note);
        $this->assertStringContainsString('原运费保持不变', $approvalEvent->note);
        $this->assertSame(
            CourierQuoteChange::RECALCULATION_BLOCKED,
            json_decode($approvalEvent->details_json, true, 512, JSON_THROW_ON_ERROR)['recalculation_status']
        );

        $this->loginAs()->get(route('business.courier-quote-changes.show', $change))
            ->assertOk()
            ->assertSeeText('追溯变价 · 核算受阻')
            ->assertSeeText('未生成补差明细')
            ->assertSeeText('原运费保持不变');

        $this->loginAs()->get(route('business.courier-quote-changes.index'))
            ->assertOk()
            ->assertSeeText('追溯变价')
            ->assertSeeText('核算受阻');
    }

    public function test_other_company_cannot_open_or_modify_quote_change(): void
    {
        $this->loginAs()->post(route('business.courier-quote-changes.store'), $this->validPayload());
        $change = CourierQuoteChange::firstOrFail();

        \DB::table('business_courier_quote_changes')->where('id', $change->id)->update([
            'company_id' => $this->company->id + 999,
        ]);

        $response = $this->withExceptionHandling()->loginAs()
            ->get(route('business.courier-quote-changes.show', $change->id));
        $response->assertRedirect(route('business.courier-quote-changes.index'));
        $this->assertNull(CourierQuoteChange::find($change->id));
    }

    public function test_user_without_quote_page_permission_cannot_use_workflow_routes(): void
    {
        $subject = 'user_' . $this->user->id;
        $this->user->roles()->sync([\App\Models\Auth\Role::where('name', 'admin')->firstOrFail()->id]);
        setting()->set('system.sidebar_permissions', json_encode([
            'configured' => [$subject],
            'subjects' => [$subject => ['courier-payables/freight-reconciliation']],
        ], JSON_UNESCAPED_UNICODE));

        $this->withExceptionHandling()->loginAs()->get(route('business.courier-quote-changes.index'))->assertForbidden();
        $this->withExceptionHandling()->loginAs()->post(route('business.courier-quote-changes.store'), $this->validPayload())->assertForbidden();
    }

    private function validPayload(): array
    {
        return [
            'source_quote_id' => 'QB-001',
            'change_type' => '面单调整',
            'effective_date' => now()->addDay()->toDateString(),
            'summary' => '广东省面单每单增加1元。',
            'items' => [[
                'source_cell' => 'B2',
                'source_row' => 1,
                'source_column' => 1,
                'region' => '广东省',
                'weight_band' => '面单',
                'charge_item' => '面单',
                'original_amount' => '5.0000',
                'new_amount' => '6.0000',
                'unit' => '元/单',
                'note' => '快递通知调价',
            ]],
        ];
    }

    private function createReviewer()
    {
        $reviewer = user_model_class()::create([
            'name' => 'Quote Reviewer',
            'email' => 'quote-reviewer-' . uniqid('', true) . '@example.com',
            'password' => 'password',
            'locale' => 'zh-CN',
            'enabled' => 1,
            'landing_page' => 'dashboard',
            'created_from' => 'core::test',
        ]);
        $reviewer->companies()->attach($this->company->id);
        $reviewer->roles()->attach(Role::where('name', 'admin')->firstOrFail()->id);
        $reviewer->attachPermission(Permission::where('name', 'read-admin-panel')->firstOrFail());

        return $reviewer;
    }
}