package plc

import (
	"context"
	"errors"
)

// mockClient 模拟西门子 PLC：下发成功即认为写入寄存器，完成信号由外部置位。
type mockClient struct {
	ack bool
	sent string
}

func newMockClient() *mockClient {
	return &mockClient{}
}

func (m *mockClient) SendProcessCode(_ context.Context, combination string) ([]int, error) {
	codes := parseCombination(combination)
	m.sent = combination
	m.ack = false
	return codes, nil
}

func (m *mockClient) QueryDone(_ context.Context) (bool, error) {
	if m.sent == "" {
		return false, errors.New("no process sent")
	}
	// 模拟：假设 PLC 已完成，30 秒后返回完成信号
	return m.ack, nil
}

func (m *mockClient) AckDone(_ context.Context, ok bool) {
	m.ack = ok
}