import 'reflect-metadata';
import assert from 'node:assert/strict';
import { createHash, randomUUID } from 'node:crypto';
import { test } from 'node:test';
import { PrismaService } from '../src/database/prisma.service';
import { WorksheetImporter } from '../src/imports/worksheet-import';
import { testConfig } from './test-config';
import { worksheetFixture as fixture } from './worksheet-import.fixture';

const databaseUrl = process.env.TEST_DATABASE_URL;
test(
    '真实 PostgreSQL：题型元数据导入、待迁移资产、对账、幂等与整批回滚',
    { skip: !databaseUrl },
    async (context) => {
        const url = new URL(databaseUrl!);
        assert.ok(['127.0.0.1', 'localhost'].includes(url.hostname));
        assert.match(url.pathname, /^\/doodle_auth_test_[a-f0-9]{32}$/);
        const db = new PrismaService({
            ...testConfig,
            databaseUrl: databaseUrl!,
        });
        context.after(() => db.onModuleDestroy());
        const prisma = db.client;
        const importer = new WorksheetImporter(db);
        await prisma.category.create({
            data: {
                status: 'active',
                id: fixture.category,
                name: '导入验证',
                icon: '📐',
                color: '#fff',
            },
        });
        const run = (rows: unknown[], dryRun = false, metadataOnly = true) => {
            const source = rows.map((row) => JSON.stringify(row)).join('\n');
            return importer.importExport(source, {
                dryRun,
                metadataOnly,
                requestId: randomUUID(),
                sourceSha256: createHash('sha256').update(source).digest('hex'),
            });
        };
        const counts = async () => ({
            assets: await prisma.asset.count(),
            worksheets: await prisma.worksheet.count(),
            audits: await prisma.adminAuditLog.count(),
        });

        await context.test(
            '默认拒绝未就绪预览；预演及无效分类不写任何数据',
            async () => {
                const before = await counts();
                await assert.rejects(run([fixture], false, false), {
                    status: 409,
                });
                await assert.rejects(
                    run([{ ...fixture, category: 'missing-category' }]),
                    { status: 400 },
                );
                const preview = await run([fixture], true);
                assert.equal(preview.inserted, 1);
                assert.equal(preview.pendingPreviews, 1);
                assert.equal(preview.readyForPublicUse, false);
                assert.deepEqual(await counts(), before);
            },
        );
        await context.test(
            '同批保存原 ID、原始计数、时间、旧年级及 pending 资产，不伪造资源或年级关系',
            async () => {
                const report = await run([{ ...fixture, grade: 23 }]);
                assert.equal(report.inserted, 1);
                assert.equal(report.assetsInserted, 1);
                assert.equal(report.gradeRelationsInserted, 0);
                assert.equal(report.warnings[0]?.originalValue, 23);
                const row = await prisma.worksheet.findUniqueOrThrow({
                    where: { id: fixture._id },
                });
                assert.equal(row.grade, 23);
                assert.equal(row.downloads, 23n);
                assert.equal(row.downloadsSeed, 12n);
                assert.equal(
                    row.createdAt.toISOString(),
                    fixture.createdAt.$date,
                );
                assert.equal(
                    row.updatedAt.toISOString(),
                    fixture.updatedAt.$date,
                );
                assert.equal(row.firstPublishedAt, null);
                assert.equal(row.contentUpdatedAt, null);
                assert.equal(row.status, 'active');
                const asset = await prisma.asset.findUniqueOrThrow({
                    where: { id: row.previewAssetId },
                });
                assert.equal(asset.sourceRef, fixture.previewImg);
                assert.equal(
                    asset.sourceRefHash,
                    createHash('sha256')
                        .update(fixture.previewImg)
                        .digest('hex'),
                );
                assert.equal(asset.status, 'pending');
                assert.equal(asset.objectKey, null);
                assert.equal(asset.bucket, null);
                assert.equal(asset.mimeType, null);
                assert.equal(
                    await prisma.worksheetGrade.count({
                        where: { worksheetId: fixture._id },
                    }),
                    0,
                );
                assert.equal(
                    await prisma.worksheetResource.count({
                        where: { worksheetId: fixture._id },
                    }),
                    0,
                );
                const audit = await prisma.adminAuditLog.findFirstOrThrow({
                    where: {
                        resourceId: fixture._id,
                        action: 'worksheet.import',
                    },
                });
                assert.equal(audit.actorType, 'migration');
                assert.equal(
                    (audit.afterData as { downloads: string }).downloads,
                    '23',
                );
            },
        );
        await context.test(
            '重导不新增或更新时间，共享预览复用资产；不同旧快照禁止覆盖',
            async () => {
                const before = await counts();
                const stored = await prisma.worksheet.findUniqueOrThrow({
                    where: { id: fixture._id },
                });
                const repeated = await run([{ ...fixture, grade: 23 }]);
                assert.equal(repeated.unchanged, 1);
                assert.equal(repeated.assetsInserted, 0);
                assert.deepEqual(await counts(), before);
                assert.deepEqual(
                    await prisma.worksheet.findUniqueOrThrow({
                        where: { id: fixture._id },
                    }),
                    stored,
                );
                const shared = await run([
                    { ...fixture, _id: 'worksheet-import-shared' },
                ]);
                assert.equal(shared.assetsInserted, 0);
                assert.equal(shared.assetsReused, 1);
                assert.equal(await prisma.asset.count(), before.assets);
                await assert.rejects(
                    run([{ ...fixture, grade: 23, downloads: 24 }]),
                    { status: 409 },
                );
                assert.equal(
                    (
                        await prisma.worksheet.findUniqueOrThrow({
                            where: { id: fixture._id },
                        })
                    ).downloads,
                    23n,
                );
            },
        );
        await context.test(
            '后半批冲突会回滚前面新增题型、资产及审计',
            async () => {
                const before = await counts();
                await assert.rejects(
                    run([
                        {
                            ...fixture,
                            _id: 'worksheet-import-rollback',
                            previewImg:
                                'cloud://fixture-env/assets/previews/rollback.jpg',
                        },
                        { ...fixture, grade: 23, title: '禁止覆盖' },
                    ]),
                    { status: 409 },
                );
                assert.deepEqual(await counts(), before);
                assert.equal(
                    await prisma.worksheet.count({
                        where: { id: 'worksheet-import-rollback' },
                    }),
                    0,
                );
            },
        );
    },
);