package dockeragent

import (
	"context"
	"crypto/rand"
	"encoding/json"
	"io"
	"os"
	"os/exec"
	"runtime"
	"syscall"
	"time"

	"github.com/moby/moby/client"
	"github.com/rcourtman/pulse-go-rewrite/internal/hostmetrics"
)

var (
	connectRuntimeFn         = connectRuntime
	hostmetricsCollect       = hostmetrics.Collect
	newTickerFn              = time.NewTicker
	newTimerFn               = time.NewTimer
	randomDurationFn         = randomDuration
	nowFn                    = time.Now
	sleepFn                  = time.Sleep
	jsonMarshalFn            = json.Marshal
	normalizeTargetsFn       = normalizeTargets
	buildRuntimeCandidatesFn = buildRuntimeCandidates
	tryRuntimeCandidateFn    = tryRuntimeCandidate
	randIntFn                = rand.Int
	osExecutableFn           = os.Executable
	osCreateTempFn           = os.CreateTemp
	closeFileFn              = func(f *os.File) error { return f.Close() }
	osRenameFn               = os.Rename
	osChmodFn                = os.Chmod
	osRemoveFn               = os.Remove
	osReadFileFn             = os.ReadFile
	osWriteFileFn            = os.WriteFile
	osStatFn                 = os.Stat
	syscallExecFn            = syscall.Exec
	goArch                   = runtime.GOARCH
	unameMachine             = func() (string, error) {
		out, err := exec.Command("uname", "-m").Output()
		if err != nil {
			return "", err
		}
		return string(out), nil
	}
	machineIDPaths = []string{
		"/etc/machine-id",
		"/var/lib/dbus/machine-id",
	}
	unraidVersionPath       = "/etc/unraid-version"
	unraidPersistPath       = "/boot/config/plugins/pulse-agent/pulse-agent"
	unraidStartupScriptPath = "/boot/config/plugins/pulse-agent/start-pulse-agent.sh"
	agentLogPath            = "/var/log/pulse-agent.log"
	openProcUptime          = func() (io.ReadCloser, error) {
		return os.Open("/proc/uptime")
	}
	newDockerClientFn = func(opts ...client.Opt) (dockerClient, error) {
		return newMobyDockerClient(opts...)
	}
	selfUpdateFunc = func(a *Agent, ctx context.Context) error {
		return a.selfUpdate(ctx)
	}
	execCommandContextFn = func(ctx context.Context, name string, arg ...string) *exec.Cmd {
		return exec.CommandContext(ctx, name, arg...)
	}
)