import { describe, it, expect, vi } from 'vitest';
import { OneBotNetworkManager } from '../src/network/network-manager';
import type { ApiActionContext } from '../src/api-handler';
import { createCompiledTestHandler, testAction } from './helpers/compiled-action-handler';

// ApiHandler's register* only define handlers (closures) at construction — they
// don't touch ctx — so a throwing proxy is a safe minimal context.
function fakeCtx(): ApiActionContext {
    return new Proxy({} as ApiActionContext, {
        get(_t, prop) {
            throw new Error(`ctx.${String(prop)} not stubbed`);
        },
    });
}

describe('OneBotNetworkManager.subscribeDebug', () => {
    it('notifies debug subscribers on emitEvent even with no active adapters', async () => {
        const nm = new OneBotNetworkManager();
        const seen: unknown[] = [];
        nm.subscribeDebug((e) => seen.push(e));
        await nm.emitEvent({ post_type: 'meta_event', x: 1 });
        expect(seen).toEqual([{ post_type: 'meta_event', x: 1 }]);
    });

    it('stops notifying after unsubscribe', async () => {
        const nm = new OneBotNetworkManager();
        const cb = vi.fn();
        const off = nm.subscribeDebug(cb);
        await nm.emitEvent({ a: 1 });
        off();
        await nm.emitEvent({ a: 2 });
        expect(cb).toHaveBeenCalledTimes(1);
        expect(cb).toHaveBeenCalledWith({ a: 1 });
    });

    it('a throwing subscriber does not break emitEvent', async () => {
        const nm = new OneBotNetworkManager();
        nm.subscribeDebug(() => {
            throw new Error('boom');
        });
        await expect(nm.emitEvent({ a: 1 })).resolves.toBeUndefined();
    });
});

describe('ApiHandler.setObserver', () => {
    it('fires after a successful action with {action, params, response, ms}', async () => {
        const h = createCompiledTestHandler(fakeCtx(), [
            testAction('ping', async () => ({ status: 'ok', retcode: 0, data: 'pong' })),
        ]);
        const recs: Array<{ action: string; response: { status: string } }> = [];
        h.setObserver((r) => recs.push(r as any));
        const res = await h.handle('ping', { x: 1 });
        expect(res).toMatchObject({ status: 'ok', data: 'pong' });
        expect(recs).toHaveLength(1);
        expect(recs[0]).toMatchObject({
            action: 'ping',
            params: { x: 1 },
            response: { status: 'ok' },
        });
        expect(typeof (recs[0] as any).ms).toBe('number');
    });

    it('fires on a thrown action with the failure response', async () => {
        const h = createCompiledTestHandler(fakeCtx(), [
            testAction('boom', async () => {
                throw new Error('kaboom');
            }),
        ]);
        const recs: any[] = [];
        h.setObserver((r) => recs.push(r));
        await h.handle('boom', {});
        expect(recs).toHaveLength(1);
        expect(recs[0].response.status).toBe('failed');
    });

    it('unsubscribe stops observation', async () => {
        const h = createCompiledTestHandler(fakeCtx(), [
            testAction('ping', async () => ({ status: 'ok', retcode: 0 })),
        ]);
        const cb = vi.fn();
        const off = h.setObserver(cb);
        await h.handle('ping', {});
        off();
        await h.handle('ping', {});
        expect(cb).toHaveBeenCalledTimes(1);
    });

    it('a throwing observer does not break handle', async () => {
        const h = createCompiledTestHandler(fakeCtx(), [
            testAction('ping', async () => ({ status: 'ok', retcode: 0 })),
        ]);
        h.setObserver(() => {
            throw new Error('observer boom');
        });
        await expect(h.handle('ping', {})).resolves.toMatchObject({ status: 'ok' });
    });
});