import { createHash } from 'node:crypto';
import { GetObjectCommand, HeadObjectCommand } from '@aws-sdk/client-s3';
import {
    createMediaAccessUrlRequestSchema,
    createMediaUploadIntentRequestSchema,
    importProductImageRequestSchema,
} from '@atlas/contracts';
import { describe, expect, it, vi } from 'vitest';
import { MediaService } from '../src/media/media.service.js';
import {
    downloadProductImage,
    publicIpv4,
} from '../src/media/product-image-download.js';

function serviceWithObject(bytes: Buffer) {
    const service = new MediaService(
        {} as ConstructorParameters<typeof MediaService>[0],
        {} as ConstructorParameters<typeof MediaService>[1],
        {
            OBJECT_STORAGE_ENDPOINT: 'http://127.0.0.1:9000',
            OBJECT_STORAGE_BUCKET: 'test',
            objectStorageForcePathStyle: true,
            objectStorageAccessKey: 'test',
            objectStorageSecretKey: 'test',
        } as ConstructorParameters<typeof MediaService>[2],
    );
    const send = vi.fn(async (command: unknown) => {
        if (command instanceof HeadObjectCommand) {
            return { ContentLength: bytes.length, ContentType: 'image/png' };
        }
        if (command instanceof GetObjectCommand) {
            return {
                Body: (async function* () {
                    yield bytes;
                })(),
            };
        }
        throw new Error('未知 S3 命令');
    });
    Object.assign(service, { s3: { send } });
    return service as unknown as {
        inspectObject: (intent: Record<string, unknown>) => Promise<{
            width: number;
            height: number;
            checksum: string;
        }>;
    };
}

function png(width: number, height: number) {
    const bytes = Buffer.alloc(24);
    Buffer.from([137, 80, 78, 71, 13, 10, 26, 10]).copy(bytes);
    bytes.writeUInt32BE(width, 16);
    bytes.writeUInt32BE(height, 20);
    return bytes;
}

describe('商品图片上传策略', () => {
    it('下载地址签名 attachment 响应头，预览地址保持内联显示', async () => {
        const assetId = '7c910684-7070-4f36-8a7b-b10bd91acd79';
        const query = vi.fn(async () => ({
            rows: [{ bucket: 'test', object_key: 'uploads/test.png', content_type: 'image/png' }],
        }));
        const workspaceTransaction = vi.fn(async (
            _workspaceId: string,
            callback: (tx: { query: typeof query }) => Promise<unknown>,
        ) => callback({ query }));
        const service = new MediaService(
            {} as ConstructorParameters<typeof MediaService>[0],
            { workspaceTransaction } as unknown as ConstructorParameters<typeof MediaService>[1],
            {
                OBJECT_STORAGE_ENDPOINT: 'http://127.0.0.1:9000',
                OBJECT_STORAGE_BUCKET: 'test',
                objectStorageForcePathStyle: true,
                objectStorageAccessKey: 'test',
                objectStorageSecretKey: 'test',
            } as ConstructorParameters<typeof MediaService>[2],
        );
        expect(createMediaAccessUrlRequestSchema.safeParse({ purpose: 'download' }).success).toBe(true);
        const preview = await service.accessUrl('workspace-id', assetId);
        const download = await service.accessUrl('workspace-id', assetId, 'download');
        expect(new URL(preview.url).searchParams.has('response-content-disposition')).toBe(false);
        expect(new URL(download.url).searchParams.get('response-content-disposition'))
            .toBe(`attachment; filename="atlas-image-${assetId}.png"`);
        expect(workspaceTransaction).toHaveBeenCalledTimes(2);
    });

    it('创建商品图片上传意图时持久化用途并签发独立对象路径', async () => {
        const query = vi.fn(async (_sql: string, _params?: unknown[]) => ({
            rows: [],
        }));
        const run = vi.fn(
            async (
                _request: unknown,
                callback: (tx: { query: typeof query }) => Promise<unknown>,
            ) => callback({ query }),
        );
        const service = new MediaService(
            { run } as unknown as ConstructorParameters<typeof MediaService>[0],
            {} as ConstructorParameters<typeof MediaService>[1],
            {
                OBJECT_STORAGE_ENDPOINT: 'http://127.0.0.1:9000',
                OBJECT_STORAGE_BUCKET: 'test',
                objectStorageForcePathStyle: true,
                objectStorageAccessKey: 'test',
                objectStorageSecretKey: 'test',
            } as ConstructorParameters<typeof MediaService>[2],
        );
        Object.assign(service, { ensureBucket: async () => undefined });
        const result = await service.createIntent(
            'workspace-id',
            'user-id',
            'key',
            {
                purpose: 'product_image',
                filename: 'sku.png',
                content_type: 'image/png',
                byte_size: 1024,
                checksum_sha256: 'a'.repeat(64),
            },
        );
        const args = query.mock.calls[0]?.[1] as unknown[];
        expect(args[1]).toBe('product_image');
        expect(args[3]).toContain('/product-images/');
        const body = result.body as { data: { upload: { url: string } } };
        expect(body.data.upload.url).toContain('product-images');
    });

    it('商品图允许 20 MiB，水印图仍限制 5 MiB', () => {
        const request = {
            filename: 'sku.png',
            content_type: 'image/png',
            byte_size: 6 * 1024 * 1024,
            checksum_sha256: 'a'.repeat(64),
        };
        expect(
            createMediaUploadIntentRequestSchema.safeParse({
                ...request,
                purpose: 'product_image',
            }).success,
        ).toBe(true);
        expect(
            createMediaUploadIntentRequestSchema.safeParse({
                ...request,
                purpose: 'watermark_image',
            }).success,
        ).toBe(false);
        expect(
            createMediaUploadIntentRequestSchema.safeParse({
                ...request,
                purpose: 'product_image',
                byte_size: 21 * 1024 * 1024,
            }).success,
        ).toBe(false);
    });

    it('商品图校验接受 9000px，水印图仍拒绝超过 8192px', async () => {
        const bytes = png(9000, 9000);
        const service = serviceWithObject(bytes);
        const intent = {
            bucket: 'test',
            object_key: 'product.png',
            expected_content_type: 'image/png',
            purpose: 'product_image',
        };
        await expect(service.inspectObject(intent)).resolves.toMatchObject({
            width: 9000,
            height: 9000,
            checksum: createHash('sha256').update(bytes).digest('hex'),
        });
        await expect(
            service.inspectObject({ ...intent, purpose: 'watermark_image' }),
        ).rejects.toThrow();
    });

    it('上传图片列表仅查询当前工作空间已完成的商品素材', async () => {
        const query = vi.fn(async (sql: string) => {
            expect(sql).toContain("i.purpose = 'product_image'");
            expect(sql).toContain("i.status = 'ready'");
            return {
                rows: [
                    {
                        id: '7c910684-7070-4f36-8a7b-b10bd91acd79',
                        content_type: 'image/png',
                        byte_size: '24',
                        width_px: 800,
                        height_px: 800,
                        created_at: new Date('2026-09-24T00:00:00Z'),
                        bucket: 'test',
                        object_key: 'uploads/test.png',
                    },
                ],
            };
        });
        const workspaceTransaction = vi.fn(
            async (
                workspaceId: string,
                callback: (tx: { query: typeof query }) => Promise<unknown>,
            ) => {
                expect(workspaceId).toBe('workspace-id');
                return callback({ query });
            },
        );
        const service = new MediaService(
            {} as ConstructorParameters<typeof MediaService>[0],
            { workspaceTransaction } as unknown as ConstructorParameters<
                typeof MediaService
            >[1],
            {
                OBJECT_STORAGE_ENDPOINT: 'http://127.0.0.1:9000',
                OBJECT_STORAGE_BUCKET: 'test',
                objectStorageForcePathStyle: true,
                objectStorageAccessKey: 'test',
                objectStorageSecretKey: 'test',
            } as ConstructorParameters<typeof MediaService>[2],
        );
        const uploads = await service.productUploads('workspace-id');
        expect(uploads).toHaveLength(1);
        expect(uploads[0]).toMatchObject({
            id: '7c910684-7070-4f36-8a7b-b10bd91acd79',
            byte_size: 24,
        });
        expect(uploads[0].preview_url).toContain('uploads/test.png');
    });

    it('网络导入只允许 HTTPS 图片链接，拒绝内网地址', async () => {
        expect(
            importProductImageRequestSchema.safeParse({
                url: 'https://example.com/image.jpg',
            }).success,
        ).toBe(true);
        expect(
            importProductImageRequestSchema.safeParse({
                url: 'http://example.com/image.jpg',
            }).success,
        ).toBe(false);
        expect(
            importProductImageRequestSchema.safeParse({
                url: 'https://example.com/image.svg',
            }).success,
        ).toBe(false);
        expect(publicIpv4('8.8.8.8')).toBe(true);
        for (const address of [
            '127.0.0.1',
            '10.1.2.3',
            '172.16.0.1',
            '192.168.1.1',
            '169.254.1.1',
            '100.64.0.1',
            '224.0.0.1',
        ]) {
            expect(publicIpv4(address)).toBe(false);
        }
        await expect(
            downloadProductImage('https://127.0.0.1/image.jpg'),
        ).rejects.toThrow();
    });
});