package app

import (
	"net/http"
	"strings"
	"time"
)

func runTransportLifecyclePreflight(id, action string) (int, TransportClientLifecycleResponse, bool) {
	if action != "start" && action != "restart" {
		return 0, TransportClientLifecycleResponse{}, false
	}

	transportMu.Lock()
	preState := loadTransportClientsState()
	preIdx := findTransportClientIndex(preState.Items, id)
	if preIdx < 0 {
		transportMu.Unlock()
		return http.StatusNotFound, TransportClientLifecycleResponse{
			OK:      false,
			Message: "not found",
			Code:    "TRANSPORT_CLIENT_NOT_FOUND",
		}, true
	}
	preClient := preState.Items[preIdx]
	transportMu.Unlock()

	if preClient.Kind != TransportClientSingBox {
		return 0, TransportClientLifecycleResponse{}, false
	}

	checkBinary := true
	if transportConfigHasKey(preClient.Config, "singbox_preflight_check_binary") {
		checkBinary = transportConfigBool(preClient.Config, "singbox_preflight_check_binary")
	}
	preflight := prepareSingBoxClientProfile(preClient, checkBinary)
	if preflight.OK {
		return 0, TransportClientLifecycleResponse{}, false
	}

	now := time.Now().UTC()
	msg := strings.TrimSpace(preflight.Message)
	if msg == "" {
		msg = "singbox profile preflight failed"
	}
	events.push("transport_client_preflight_failed", map[string]any{
		"id":     id,
		"action": action,
		"code":   preflight.Code,
		"error":  msg,
	})
	return http.StatusOK, TransportClientLifecycleResponse{
		OK:           false,
		Message:      msg,
		Code:         preflight.Code,
		ExitCode:     preflight.ExitCode,
		Stdout:       preflight.Stdout,
		Stderr:       preflight.Stderr,
		ClientID:     id,
		Kind:         preClient.Kind,
		Action:       action,
		StatusBefore: preClient.Status,
		StatusAfter:  preClient.Status,
		Health:       preClient.Health,
		Runtime:      transportRuntimeSnapshot(preClient, now),
	}, true
}