import { describe, expect, it, vi } from 'vitest';
import type { IncomingMessage, ServerResponse } from 'http';
import { HttpServerAdapter } from '../src/network/http-server-adapter';
import type { NetworkAdapterContext } from '../src/network/adapter';
import type { HttpServerNetwork } from '../src/types';

let apiAccepting = true;
const CTX: NetworkAdapterContext = {
    uin: '10001',
    api: {
        get isAcceptingActions() {
            return apiAccepting;
        },
    } as never,
    buildLifecycleEvent: () => ({}),
    buildHeartbeatEvent: () => ({}),
};

describe('HttpServerAdapter close ownership', () => {
    it('retains the server reference after callback failure and retries it', async () => {
        apiAccepting = true;
        const config: HttpServerNetwork = {
            name: 'http',
            host: '127.0.0.1',
            port: 3000,
            messageFormat: 'array',
            reportSelfMessage: false,
        };
        const adapter = new HttpServerAdapter('http', config, CTX);
        let callback: ((error?: Error) => void) | null = null;
        const server = {
            listening: true,
            close(next: (error?: Error) => void) {
                callback = next;
            },
        };
        Object.assign(adapter as unknown as Record<string, unknown>, {
            server,
            isEnabled: true,
            listening: true,
            acceptingActions: true,
        });

        const firstClose = adapter.close();
        callback!(new Error('release failed'));
        await expect(firstClose).rejects.toThrow('release failed');
        expect((adapter as unknown as { server: unknown }).server).toBe(server);
        expect(adapter.describeStatus().status).toBe('ok');

        expect((adapter as unknown as { acceptingActions: boolean }).acceptingActions).toBe(true);
        apiAccepting = false;
        const response = {
            headersSent: false,
            writableEnded: false,
            destroyed: false,
            statusCode: 0,
            setHeader: vi.fn(),
            end: vi.fn(),
        } as unknown as ServerResponse;
        (
            adapter as unknown as {
                trackInboundAction(req: IncomingMessage, res: ServerResponse): void;
            }
        ).trackInboundAction({} as IncomingMessage, response);
        expect(response.statusCode).toBe(503);
        expect(response.end).toHaveBeenCalledWith(expect.stringContaining('server closing'));

        const secondClose = adapter.close();
        callback!();
        await secondClose;
        expect((adapter as unknown as { server: unknown }).server).toBeNull();
        expect(adapter.describeStatus().status).toBe('disabled');
    });

    it('keeps the embedded upgrade handler when HTTP release fails, then retries both owners', async () => {
        apiAccepting = true;
        const config: HttpServerNetwork = {
            name: 'combined',
            host: '127.0.0.1',
            port: 3000,
            enableWebSocket: true,
            messageFormat: 'array',
            reportSelfMessage: false,
        };
        const adapter = new HttpServerAdapter('combined', config, CTX);
        let httpClose: ((error?: Error) => void) | null = null;
        let webSocketClose: ((error?: Error) => void) | null = null;
        const server = {
            listening: true,
            close(next: (error?: Error) => void) {
                httpClose = next;
            },
        };
        const webSocketServer = {
            close: vi.fn((next?: (error?: Error) => void) => {
                webSocketClose = next ?? null;
            }),
        };
        const internals = adapter as unknown as {
            webSocketConnections: { startAccepting(): void; isAcceptingActions: boolean };
        };
        internals.webSocketConnections.startAccepting();
        Object.assign(adapter as unknown as Record<string, unknown>, {
            server,
            webSocketServer,
            isEnabled: true,
            listening: true,
            acceptingActions: true,
        });

        const firstClose = adapter.close();
        httpClose!(new Error('http release failed'));
        await expect(firstClose).rejects.toThrow('http release failed');
        expect(webSocketServer.close).not.toHaveBeenCalled();
        expect(internals.webSocketConnections.isAcceptingActions).toBe(true);
        expect(adapter.describeStatus().status).toBe('ok');

        const secondClose = adapter.close();
        httpClose!();
        await vi.waitFor(() => expect(webSocketServer.close).toHaveBeenCalledOnce());
        webSocketClose!();
        await secondClose;

        expect((adapter as unknown as { server: unknown }).server).toBeNull();
        expect((adapter as unknown as { webSocketServer: unknown }).webSocketServer).toBeNull();
        expect(adapter.describeStatus().status).toBe('disabled');
    });

    it('keeps only the embedded upgrade handler when its release fails, then retries it alone', async () => {
        apiAccepting = true;
        const config: HttpServerNetwork = {
            name: 'combined',
            host: '127.0.0.1',
            port: 3000,
            enableWebSocket: true,
            messageFormat: 'array',
            reportSelfMessage: false,
        };
        const adapter = new HttpServerAdapter('combined', config, CTX);
        let httpClose: ((error?: Error) => void) | null = null;
        let webSocketClose: ((error?: Error) => void) | null = null;
        const server = {
            listening: true,
            close: vi.fn((next: (error?: Error) => void) => {
                httpClose = next;
            }),
        };
        const webSocketServer = {
            close: vi.fn((next?: (error?: Error) => void) => {
                webSocketClose = next ?? null;
            }),
        };
        Object.assign(adapter as unknown as Record<string, unknown>, {
            server,
            webSocketServer,
            isEnabled: true,
            listening: true,
            acceptingActions: true,
        });

        const firstClose = adapter.close();
        httpClose!();
        await vi.waitFor(() => expect(webSocketServer.close).toHaveBeenCalledOnce());
        webSocketClose!(new Error('websocket release failed'));
        await expect(firstClose).rejects.toThrow('websocket release failed');

        expect(server.close).toHaveBeenCalledOnce();
        expect((adapter as unknown as { server: unknown }).server).toBeNull();
        expect((adapter as unknown as { webSocketServer: unknown }).webSocketServer).toBe(
            webSocketServer,
        );
        expect(adapter.describeStatus().status).toBe('disabled');

        const secondClose = adapter.close();
        await vi.waitFor(() => expect(webSocketServer.close).toHaveBeenCalledTimes(2));
        webSocketClose!();
        await secondClose;

        expect(server.close).toHaveBeenCalledOnce();
        expect((adapter as unknown as { server: unknown }).server).toBeNull();
        expect((adapter as unknown as { webSocketServer: unknown }).webSocketServer).toBeNull();
        expect(adapter.describeStatus().status).toBe('disabled');
    });
});