import { describe, expect, it, vi } from 'vitest';
import { protobuf_decode, protobuf_encode } from '@snowluma/proton';
import type { OidbBase } from '@snowluma/proto-defs/oidb';
import type {
    OidbPrivateFileDownloadReq,
    OidbPrivateFileDownloadResp,
} from '@snowluma/proto-defs/oidb-actions/media';
import type { SendPacketResult } from '@snowluma/common/packet-sender';

import { GetPrivateFileUrl } from '../../../src/oidb-services/group-file/get-private-file-url';

function makeDeps(body?: OidbPrivateFileDownloadResp) {
    const responseData =
        body !== undefined
            ? Buffer.from(protobuf_encode<OidbBase<OidbPrivateFileDownloadResp>>({ body }))
            : Buffer.alloc(0);
    const r: SendPacketResult = {
        success: true,
        gotResponse: true,
        errorCode: 0,
        errorMessage: '',
        responseData,
    };
    return { sendRawPacket: vi.fn(async () => r) };
}

describe('GetPrivateFileUrl namespace', () => {
    it('declares 0xE37_1200', () => {
        expect(GetPrivateFileUrl.command).toBe(0xe37);
        expect(GetPrivateFileUrl.subCommand).toBe(1200);
    });

    it('packages the magic field99999 cookie + body fields', async () => {
        const deps = makeDeps({
            body: { result: { server: 'host', port: 80, url: '/u' } } as any,
        });
        await GetPrivateFileUrl.invoke(deps, { selfUid: 'self', fileId: 'fid', fileHash: 'h' });
        const [wire, bytes] = deps.sendRawPacket.mock.calls[0]!;
        expect(wire).toBe('OidbSvcTrpcTcp.0xe37_1200');
        const env = protobuf_decode<OidbBase<OidbPrivateFileDownloadReq>>(bytes);
        expect(env.body).toMatchObject({
            subCommand: 1200,
            field2: 1,
            field101: 3,
            field102: 103,
            field200: 1,
        });
        expect(env.body?.body).toMatchObject({
            receiverUid: 'self',
            fileUuid: 'fid',
            type: 2,
            fileHash: 'h',
        });
        expect(env.body?.field99999).toEqual(new Uint8Array([0xc0, 0x85, 0x2c, 0x01]));
    });

    it('composes the http download URL', async () => {
        const deps = makeDeps({
            body: { result: { server: 'srv', port: 8080, url: '/path' } } as any,
        });
        await expect(
            GetPrivateFileUrl.invoke(deps, { selfUid: 's', fileId: 'f', fileHash: 'h' }),
        ).resolves.toBe('http://srv:8080/path&isthumb=0');
    });

    it('throws when result is missing', async () => {
        const deps = makeDeps({ body: {} });
        await expect(
            GetPrivateFileUrl.invoke(deps, { selfUid: 's', fileId: 'f', fileHash: 'h' }),
        ).rejects.toThrow(/private file url response invalid/);
    });

    it('throws when server/port/url is incomplete', async () => {
        const deps = makeDeps({
            body: { result: { server: 'srv', port: 0, url: '/path' } } as any,
        });
        await expect(
            GetPrivateFileUrl.invoke(deps, { selfUid: 's', fileId: 'f', fileHash: 'h' }),
        ).rejects.toThrow(/private file url response invalid/);
    });
});