package docker

import (
	"github.com/dotcloud/docker/utils"
)

// Compare two Config struct. Do not compare the "Image" nor "Hostname" fields
// If OpenStdin is set, then it differs
func CompareConfig(a, b *Config) bool {
	if a == nil || b == nil ||
		a.OpenStdin || b.OpenStdin {
		return false
	}
	if a.AttachStdout != b.AttachStdout ||
		a.AttachStderr != b.AttachStderr ||
		a.User != b.User ||
		a.Memory != b.Memory ||
		a.MemorySwap != b.MemorySwap ||
		a.CpuShares != b.CpuShares ||
		a.OpenStdin != b.OpenStdin ||
		a.Tty != b.Tty {
		return false
	}
	if len(a.Cmd) != len(b.Cmd) ||
		len(a.Dns) != len(b.Dns) ||
		len(a.Env) != len(b.Env) ||
		len(a.PortSpecs) != len(b.PortSpecs) {
		return false
	}

	for i := 0; i < len(a.Cmd); i++ {
		if a.Cmd[i] != b.Cmd[i] {
			return false
		}
	}
	for i := 0; i < len(a.Dns); i++ {
		if a.Dns[i] != b.Dns[i] {
			return false
		}
	}
	for i := 0; i < len(a.Env); i++ {
		if a.Env[i] != b.Env[i] {
			return false
		}
	}
	for i := 0; i < len(a.PortSpecs); i++ {
		if a.PortSpecs[i] != b.PortSpecs[i] {
			return false
		}
	}

	return true
}

func GetKernelVersion() (*utils.KernelVersionInfo, error) {
	return getKernelVersion()
}