package records

import (
	"context"
	"database/sql"
	"sync/atomic"
	"testing"

	connector "github.com/pingcap-inc/nexuscrm-contract/pkg/connector"
)

type insertInheritanceCacheTxManagerStub struct {
	active bool
	tx     interface{}
}

type insertInheritanceRuntimeMetadataStub struct {
	calls atomic.Int64
	rules []connector.FieldMappingWithSource
}

func (s *insertInheritanceRuntimeMetadataStub) InsertInheritanceRules(context.Context, string) ([]connector.FieldMappingWithSource, error) {
	s.calls.Add(1)
	return append([]connector.FieldMappingWithSource(nil), s.rules...), nil
}

func (*insertInheritanceCacheTxManagerStub) WithTransaction(context.Context, func(context.Context) error) error {
	return nil
}

func (*insertInheritanceCacheTxManagerStub) WithPessimisticTransaction(context.Context, func(context.Context) error) error {
	return nil
}

func (*insertInheritanceCacheTxManagerStub) WithRetry(context.Context, func(context.Context) error, int) error {
	return nil
}

func (*insertInheritanceCacheTxManagerStub) WithPessimisticRetry(context.Context, func(context.Context) error, int) error {
	return nil
}

func (m *insertInheritanceCacheTxManagerStub) IsTransactionActive(context.Context) bool {
	return m.active
}

func (*insertInheritanceCacheTxManagerStub) IsPessimisticTx(context.Context) bool {
	return false
}

func (m *insertInheritanceCacheTxManagerStub) ExtractTx(context.Context) interface{} {
	return m.tx
}

func (*insertInheritanceCacheTxManagerStub) DetachTx(ctx context.Context) context.Context {
	return ctx
}

func insertInheritanceCacheTestService(db *sql.DB) *PersistenceService {
	return &PersistenceService{
		rawDB:       db,
		txManager:   &insertInheritanceCacheTxManagerStub{},
		logger:      nil,
		metadata:    nil,
		permissions: nil,
	}
}

func TestRuntimeInsertInheritanceUsesBoundProjectionWithoutGlobalCacheOrRawDB(t *testing.T) {
	provider := &insertInheritanceRuntimeMetadataStub{rules: []connector.FieldMappingWithSource{{
		SourceObject: "ParentObject",
		FieldMappingDef: connector.FieldMappingDef{
			SourceField: "Name", TargetField: "Description", SourceLookupField: "ParentId",
		},
	}}}
	ps := &PersistenceService{}
	if err := ps.SetInsertInheritanceRuntime(provider); err != nil {
		t.Fatalf("SetInsertInheritanceRuntime: %v", err)
	}
	for i := 0; i < 2; i++ {
		rules, err := ps.cachedInsertInheritanceRules(context.Background(), "ChildObject")
		if err != nil || len(rules) != 1 || rules[0].TargetField != "Description" {
			t.Fatalf("Runtime projection read %d = %#v, %v", i, rules, err)
		}
	}
	if got := provider.calls.Load(); got != 2 {
		t.Fatalf("request-bound projection calls = %d, want 2 (no process-global cache)", got)
	}
}