package main

import (
	"context"
	"log"

	"github.com/FerretDB/FerretDB/ferretdb"
	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
)

func main() {
	// start server
	f, err := ferretdb.New(&ferretdb.Config{
		Listener: ferretdb.ListenerConfig{
			TCP: "127.0.0.1:0",
		},
		Handler:   "sqlite",
		SQLiteURL: "file:./?mode=memory",
	})
	if err != nil {
		log.Fatal(err)
	}

	ctx, cancel := context.WithCancel(context.Background())

	done := make(chan struct{})

	go func() {
		log.Print(f.Run(ctx))
		close(done)
	}()

	uri := f.MongoDBURI()

	// start client
	mongoCli, _ := mongo.Connect(ctx, options.Client().ApplyURI(uri))
	_, e := mongoCli.Database("test").Collection("test").InsertOne(context.TODO(), bson.M{"abc": "def"})
	if e != nil {
		log.Print(e)
	}
	cancel()
	<-done
}

2024-04-15T15:59:25.084+0800    DPANIC  // 127.0.0.1:52039 -> 127.0.0.1:52037   clientconn/conn.go:170  batch-size should be greater or equal to 1
(err = <nil>)
github.com/FerretDB/FerretDB/internal/clientconn.(*conn).run.func3
        C:/Users/ben/go/pkg/mod/github.com/!ferret!d!b/!ferret!d!b@v1.21.0/internal/clientconn/conn.go:170
runtime.gopanic
        C:/Users/ben/scoop/apps/go/current/src/runtime/panic.go:770
github.com/FerretDB/FerretDB/internal/backends/sqlite.(*collection).InsertAll.func1
        C:/Users/ben/go/pkg/mod/github.com/!ferret!d!b/!ferret!d!b@v1.21.0/internal/backends/sqlite/collection.go:114
github.com/FerretDB/FerretDB/internal/util/fsql.(*DB).InTransaction
        C:/Users/ben/go/pkg/mod/github.com/!ferret!d!b/!ferret!d!b@v1.21.0/internal/util/fsql/db.go:172
github.com/FerretDB/FerretDB/internal/backends/sqlite.(*collection).InsertAll
        C:/Users/ben/go/pkg/mod/github.com/!ferret!d!b/!ferret!d!b@v1.21.0/internal/backends/sqlite/collection.go:111
github.com/FerretDB/FerretDB/internal/backends.(*collectionContract).InsertAll
        C:/Users/ben/go/pkg/mod/github.com/!ferret!d!b/!ferret!d!b@v1.21.0/internal/backends/collection.go:202
github.com/FerretDB/FerretDB/internal/backends/decorators/oplog.(*collection).InsertAll
        C:/Users/ben/go/pkg/mod/github.com/!ferret!d!b/!ferret!d!b@v1.21.0/internal/backends/decorators/oplog/collection.go:64
github.com/FerretDB/FerretDB/internal/handler.(*Handler).MsgInsert
        C:/Users/ben/go/pkg/mod/github.com/!ferret!d!b/!ferret!d!b@v1.21.0/internal/handler/msg_insert.go:145
github.com/FerretDB/FerretDB/internal/handler.(*Handler).initCommands.(*Handler).authenticateWrapper.func1
        C:/Users/ben/go/pkg/mod/github.com/!ferret!d!b/!ferret!d!b@v1.21.0/internal/handler/commands.go:304
github.com/FerretDB/FerretDB/internal/clientconn.(*conn).handleOpMsg
        C:/Users/ben/go/pkg/mod/github.com/!ferret!d!b/!ferret!d!b@v1.21.0/internal/clientconn/conn.go:575
github.com/FerretDB/FerretDB/internal/clientconn.(*conn).route
        C:/Users/ben/go/pkg/mod/github.com/!ferret!d!b/!ferret!d!b@v1.21.0/internal/clientconn/conn.go:432
github.com/FerretDB/FerretDB/internal/clientconn.(*conn).run
        C:/Users/ben/go/pkg/mod/github.com/!ferret!d!b/!ferret!d!b@v1.21.0/internal/clientconn/conn.go:316
github.com/FerretDB/FerretDB/internal/clientconn.acceptLoop.func1
        C:/Users/ben/go/pkg/mod/github.com/!ferret!d!b/!ferret!d!b@v1.21.0/internal/clientconn/listener.go:305