package service

import (
	"context"
	"testing"
	"time"

	"github.com/Tencent/WeKnora/internal/common/redislock"
	"github.com/alicebob/miniredis/v2"
	"github.com/redis/go-redis/v9"
	"github.com/stretchr/testify/require"
)

func TestWikiSlugLockRefusesUnlockedWritesWhenRedisFails(t *testing.T) {
	mini := miniredis.RunT(t)
	client := redis.NewClient(&redis.Options{Addr: mini.Addr(), MaxRetries: -1, DialTimeout: 50 * time.Millisecond})
	t.Cleanup(func() { _ = client.Close() })
	mini.Close()
	called := false
	acquired, err := (&wikiIngestService{redisClient: client}).withSlugLock(context.Background(), "kb", "concept/a", func(context.Context) error {
		called = true
		return nil
	})
	require.Error(t, err)
	require.False(t, acquired)
	require.False(t, called)
}

func TestWikiSlugLockPassesOwnershipContextToReducer(t *testing.T) {
	mini := miniredis.RunT(t)
	client := redis.NewClient(&redis.Options{Addr: mini.Addr()})
	t.Cleanup(func() { _ = client.Close() })
	acquired, err := (&wikiIngestService{redisClient: client}).withSlugLock(context.Background(), "kb", "concept/a", func(ctx context.Context) error {
		key := wikiSlugLockPrefix + "kb:concept/a"
		require.NotEqual(t, "1", client.Get(ctx, key).Val())
		require.NoError(t, client.Set(ctx, key, "successor", time.Minute).Err())
		return verifyWikiSlugOwnership(ctx)
	})
	require.True(t, acquired)
	require.ErrorIs(t, err, redislock.ErrLockOwnershipLost)
	require.Equal(t, "successor", client.Get(context.Background(), wikiSlugLockPrefix+"kb:concept/a").Val())
}