import { describe, expect, it, vi } from 'vitest';
import { OneBotInstance } from '../src/instance';
import type { NetworkReconcileResult } from '../src/network';
import type { OneBotConfig } from '../src/types';

function config(trigger: string): OneBotConfig {
    return {
        networks: { httpServers: [], httpClients: [], wsServers: [], wsClients: [] },
        statusCommand: { enabled: true, swallow: false, cooldownSeconds: 5, trigger },
        historySync: { enabled: false },
        notifications: { channelIds: [] },
    };
}

describe('OneBotInstance config lifecycle FIFO', () => {
    it('keeps ctx.config aligned with each ordered network reconcile', async () => {
        const instance = Object.create(OneBotInstance.prototype) as OneBotInstance;
        let finishFirst!: () => void;
        const firstGate = new Promise<void>((resolve) => {
            finishFirst = resolve;
        });
        const observations: Array<{ argument: OneBotConfig; current: OneBotConfig }> = [];
        const ctx = { config: config('#initial') };
        let calls = 0;
        const ok: NetworkReconcileResult = { applied: true, errors: [], statuses: [] };
        const networkManager = {
            compileDesiredPlan: vi.fn(() => []),
            reconcile: vi.fn(async (argument: OneBotConfig) => {
                observations.push({ argument, current: ctx.config });
                calls += 1;

                if (calls === 1) {
                    await firstGate;
                }

                return ok;
            }),
        };
        Object.assign(instance as unknown as Record<string, unknown>, {
            uin: '10001',
            ctx,
            networkManager,
            lifecycleTail: Promise.resolve(),
            disposeRequested: false,
        });
        const a = config('#a');
        const b = config('#b');

        const applyingA = instance.reloadConfig(a);
        const applyingB = instance.reloadConfig(b);
        await Promise.resolve();
        await Promise.resolve();
        expect(observations).toHaveLength(1);
        expect(observations[0].argument.statusCommand.trigger).toBe('#a');
        expect(observations[0].current.statusCommand.trigger).toBe('#a');

        finishFirst();
        await Promise.all([applyingA, applyingB]);
        expect(observations.map((item) => item.argument.statusCommand.trigger)).toEqual([
            '#a',
            '#b',
        ]);
        expect(observations.map((item) => item.current.statusCommand.trigger)).toEqual([
            '#a',
            '#b',
        ]);
        expect(ctx.config.statusCommand.trigger).toBe('#b');
    });
});