import { describe, expect, it } from 'vitest';

import { writeTournamentProjection } from '../src/tournament/sourceRevision.js';

describe('tournament source revision', () => {
    it('passes every payload and one profile revision key to a single atomic script', async () => {
        const calls: Array<{ keys: string[]; arguments: string[] }> = [];
        const published: Array<{ channel: string; message: string }> = [];
        const redis = {
            eval: async (_script: string, options: { keys: string[]; arguments: string[] }) => {
                calls.push(options);
                return '7:1';
            },
            publish: async (channel: string, message: string) => {
                published.push({ channel, message });
                return 1;
            },
        };

        await expect(
            writeTournamentProjection(
                redis,
                {
                    stateKey: 'state',
                    sourceRevisionKey: 'revision',
                    sourceRevisionChannel: 'changed',
                    realtimeEventChannel: 'realtime',
                },
                [
                    { key: 'state', value: { stage: 1 } },
                    { key: 'matches', value: [] },
                ]
            )
        ).resolves.toBe('7');

        expect(calls).toEqual([
            {
                keys: ['state', 'matches', 'revision'],
                arguments: [JSON.stringify({ stage: 1 }), '[]'],
            },
        ]);
        expect(published).toEqual([
            { channel: 'changed', message: JSON.stringify({ sourceRevision: '7' }) },
            { channel: 'realtime', message: JSON.stringify({ type: 'tournamentChanged' }) },
        ]);
    });

    it('rejects empty or duplicate writes before evaluating Redis', async () => {
        const redis = { eval: async () => '1' };
        await expect(
            writeTournamentProjection(
                redis,
                {
                    stateKey: 'state',
                    sourceRevisionKey: 'revision',
                    sourceRevisionChannel: 'changed',
                    realtimeEventChannel: 'realtime',
                },
                []
            )
        ).rejects.toThrow('at least one');
        await expect(
            writeTournamentProjection(
                redis,
                {
                    stateKey: 'state',
                    sourceRevisionKey: 'revision',
                    sourceRevisionChannel: 'changed',
                    realtimeEventChannel: 'realtime',
                },
                [
                    { key: 'state', value: 1 },
                    { key: 'state', value: 2 },
                ]
            )
        ).rejects.toThrow('unique');
    });

    it('does not wake the main dashboard for participant-only writes', async () => {
        const published: string[] = [];
        const redis = {
            eval: async () => '8',
            publish: async (channel: string) => {
                published.push(channel);
                return 1;
            },
        };

        await writeTournamentProjection(
            redis,
            {
                stateKey: 'state',
                sourceRevisionKey: 'revision',
                sourceRevisionChannel: 'changed',
                realtimeEventChannel: 'realtime',
            },
            [{ key: 'participants', value: [{ id: 7 }] }]
        );

        expect(published).toEqual(['changed']);
    });

    it('does not wake the main dashboard when tournament state keeps the same stage', async () => {
        const published: string[] = [];
        const redis = {
            eval: async () => '10:0',
            publish: async (channel: string) => {
                published.push(channel);
                return 1;
            },
        };

        await expect(
            writeTournamentProjection(
                redis,
                {
                    stateKey: 'state',
                    sourceRevisionKey: 'revision',
                    sourceRevisionChannel: 'changed',
                    realtimeEventChannel: 'realtime',
                },
                [{ key: 'state', value: { stage: 1, phase: 2 } }]
            )
        ).resolves.toBe('10');
        expect(published).toEqual(['changed']);
    });

    it('keeps both post-commit wake-up channels independently best effort', async () => {
        const published: string[] = [];
        const redis = {
            eval: async () => '9',
            publish: async (channel: string) => {
                published.push(channel);
                if (channel === 'changed') throw new Error('source subscriber unavailable');
                return 1;
            },
        };

        await expect(
            writeTournamentProjection(
                redis,
                {
                    stateKey: 'state',
                    sourceRevisionKey: 'revision',
                    sourceRevisionChannel: 'changed',
                    realtimeEventChannel: 'realtime',
                },
                [{ key: 'state', value: { stage: 1 } }]
            )
        ).resolves.toBe('9');
        expect(published).toEqual(['changed', 'realtime']);
    });
});