package model

import (
	"fmt"
	"sync/atomic"
	"testing"

	"github.com/glebarez/sqlite"
	"gorm.io/gorm"
	"gorm.io/gorm/logger"
)

var testDBCounter int64

// OpenTestDB opens an in-memory SQLite DB with the v2 schema migrated.
// Shared by all package tests (pay has no prior DB test harness — this is it).
// Each call gets a uniquely named in-memory DB (cache=shared is still needed
// so GORM's connection pool sees the same migrated schema across connections),
// so concurrent/parallel tests in the same package don't share state.
func OpenTestDB(t *testing.T) *gorm.DB {
	t.Helper()
	n := atomic.AddInt64(&testDBCounter, 1)
	dsn := fmt.Sprintf("file:testdb_%d?mode=memory&cache=shared", n)
	db, err := gorm.Open(sqlite.Open(dsn),
		&gorm.Config{Logger: logger.Default.LogMode(logger.Silent), TranslateError: true})
	if err != nil {
		t.Fatalf("open test db: %v", err)
	}
	if err := db.AutoMigrate(&OrderV2{}, &Attempt{}, &Account{}, &Refund{}, &WebhookDelivery{}); err != nil {
		t.Fatalf("migrate: %v", err)
	}
	sqlDB, _ := db.DB()
	t.Cleanup(func() { _ = sqlDB.Close() })
	return db
}