package user

import (
	"context"
	"testing"

	"github.com/alicebob/miniredis/v2"
	"github.com/perfect-panel/server/internal/config"
	"github.com/perfect-panel/server/internal/svc"
	"github.com/redis/go-redis/v9"
)

func TestClearAllSessions(t *testing.T) {
	redisServer, err := miniredis.Run()
	if err != nil {
		t.Fatalf("miniredis.Run() error = %v", err)
	}
	defer redisServer.Close()

	rdb := redis.NewClient(&redis.Options{Addr: redisServer.Addr()})
	defer rdb.Close()

	svcCtx := &svc.ServiceContext{Redis: rdb}
	ctx := context.Background()

	userID := int64(42)
	sessionID := "session-a"
	otherSessionID := "session-b"
	userSessionKey := config.SessionIdKey + ":" + sessionID
	userDetailKey := config.SessionIdKey + ":detail:" + sessionID
	otherSessionKey := config.SessionIdKey + ":" + otherSessionID
	userSessionsZSet := config.UserSessionsKeyPrefix + "42"
	deviceKey := config.DeviceCacheKeyKey + ":device-1"
	unrelatedDeviceKey := config.DeviceCacheKeyKey + ":device-2"

	setString(t, redisServer, userSessionKey, "42")
	setString(t, redisServer, userDetailKey, "detail")
	setString(t, redisServer, otherSessionKey, "99")
	setString(t, redisServer, deviceKey, sessionID)
	setString(t, redisServer, unrelatedDeviceKey, otherSessionID)
	if _, err := redisServer.ZAdd(userSessionsZSet, 1, sessionID); err != nil {
		t.Fatalf("seed session zset: %v", err)
	}

	if err := clearAllSessions(ctx, svcCtx, userID); err != nil {
		t.Fatalf("clearAllSessions() error = %v", err)
	}

	assertMissing(t, redisServer, userSessionKey)
	assertMissing(t, redisServer, userDetailKey)
	assertMissing(t, redisServer, deviceKey)
	assertMissing(t, redisServer, userSessionsZSet)

	if !redisServer.Exists(otherSessionKey) {
		t.Fatalf("unrelated session %q should remain", otherSessionKey)
	}
	if !redisServer.Exists(unrelatedDeviceKey) {
		t.Fatalf("unrelated device mapping %q should remain", unrelatedDeviceKey)
	}
}

func setString(t *testing.T, server *miniredis.Miniredis, key, value string) {
	t.Helper()
	if err := server.Set(key, value); err != nil {
		t.Fatalf("set %q: %v", key, err)
	}
}

func assertMissing(t *testing.T, server *miniredis.Miniredis, key string) {
	t.Helper()
	if server.Exists(key) {
		t.Fatalf("expected key %q to be removed", key)
	}
}