package app

import (
	"context"
	"fmt"
	"os"
	"os/exec"
	"strings"

	"coopcloud.tech/abra/cli/internal"
	appPkg "coopcloud.tech/abra/pkg/app"
	"coopcloud.tech/abra/pkg/autocomplete"
	"coopcloud.tech/abra/pkg/client"
	containerPkg "coopcloud.tech/abra/pkg/container"
	"coopcloud.tech/abra/pkg/log"
	"coopcloud.tech/abra/pkg/upstream/container"
	"coopcloud.tech/abra/pkg/upstream/convert"
	"coopcloud.tech/abra/pkg/upstream/stack"
	"github.com/docker/cli/cli/command"
	"github.com/docker/docker/api/types"
	containertypes "github.com/docker/docker/api/types/container"
	"github.com/docker/docker/api/types/filters"
	"github.com/docker/docker/api/types/mount"
	"github.com/spf13/cobra"
)

var AppMoveCommand = &cobra.Command{
	Use:     "move <domain> <server> [flags]",
	Aliases: []string{"d"},
	Short:   "Moves an app to a different server",
	Long: `Deploy an app.

This command supports chaos operations. Use "--chaos/-C" to deploy your recipe
checkout as-is. Recipe commit hashes are also supported as values for
"[version]". Please note, "upgrade"/"rollback" do not support chaos operations.`,
	Example: `  # standard deployment
  abra app deploy 1312.net

  # chaos deployment
  abra app deploy 1312.net --chaos
  
  # deploy specific version
  abra app deploy 1312.net 2.0.0+1.2.3

  # deploy a specific git hash
  abra app deploy 1312.net 886db76d`,
	Args: cobra.RangeArgs(1, 2),
	ValidArgsFunction: func(
		cmd *cobra.Command,
		args []string,
		toComplete string,
	) ([]string, cobra.ShellCompDirective) {
		switch l := len(args); l {
		case 0:
			return autocomplete.AppNameComplete()
		case 1:
			return autocomplete.ServerNameComplete()
		default:
			return nil, cobra.ShellCompDirectiveDefault
		}
	},
	RunE: func(cmd *cobra.Command, args []string) error {
		app := internal.ValidateApp(args)

		if err := app.Recipe.Ensure(internal.GetEnsureContext()); err != nil {
			return err
		}

		cl, err := client.New(app.Server)
		if err != nil {
			return err
		}

		filter := filters.NewArgs()
		filter.Add("label", fmt.Sprintf("%s=%s", convert.LabelNamespace, app.StackName()))
		services, err := cl.ServiceList(context.Background(), types.ServiceListOptions{Filters: filter})
		if err != nil {
			return err
		}

		dcli, err := command.NewDockerCli()
		if err != nil {
			return err
		}
		secretsToStore := map[string]string{}
		volumes := map[string]containertypes.MountPoint{}
		for _, s := range services {
			log.Info("service", s.Spec.Name)
			// stackAndServiceName := fmt.Sprintf("^%s_%s", app.StackName(), s.Spec.Name)
			f := filters.NewArgs()
			f.Add("name", s.Spec.Name)
			targetContainer, err := containerPkg.GetContainer(context.Background(), cl, f, true)
			if err != nil {
				log.Error(err)
				continue
			}
			for _, m := range targetContainer.Mounts {
				if m.Type == mount.TypeVolume {
					volumes[m.Name] = m
				}
			}

			execCreateOpts := containertypes.ExecOptions{
				AttachStderr: false,
				AttachStdin:  false,
				AttachStdout: true,
				Cmd:          []string{"ls", "/run/secrets"},
				Detach:       false,
				Tty:          false,
			}
			out, err := container.RunExec(dcli, cl, targetContainer.ID, &execCreateOpts, false)
			if err != nil {
				log.Error(out)
				continue
			}
			for _, secret := range strings.Split(strings.TrimSpace(out), "\n") {
				if _, ok := secretsToStore[secret]; ok {
					continue
				}
				log.Debugf("extracting secret %s", secret)

				execCreateOpts := containertypes.ExecOptions{
					AttachStderr: false,
					AttachStdin:  false,
					AttachStdout: true,
					Cmd:          []string{"cat", fmt.Sprintf("/run/secrets/%s", secret)},
					Detach:       false,
					Tty:          false,
				}
				out, err := container.RunExec(dcli, cl, targetContainer.ID, &execCreateOpts, false)
				if err != nil {
					return err
				}
				secretsToStore[secret] = out
			}

		}

		composeFiles, err := app.Recipe.GetComposeFiles(app.Env)
		if err != nil {
			log.Fatal(err)
		}

		opts := stack.Deploy{Composefiles: composeFiles, Namespace: app.StackName()}
		compose, err := appPkg.GetAppComposeConfig(app.Name, opts, app.Env)
		if err != nil {
			log.Fatal(err)
		}
		stack.WaitTimeout, err = appPkg.GetTimeoutFromLabel(compose, app.StackName())
		if err != nil {
			log.Fatal(err)
		}
		rmOpts := stack.Remove{
			Namespaces: []string{app.StackName()},
			Detach:     false,
		}
		if err := stack.RunRemove(context.Background(), cl, rmOpts); err != nil {
			return err
		}

		cl2, err := client.New(args[1])
		if err != nil {
			return err
		}
		filters, err := app.Filters(false, false)
		if err != nil {
			log.Fatal(err)
		}

		secretList, err := cl.SecretList(context.Background(), types.SecretListOptions{Filters: filters})
		for _, s := range secretList {
			sname := strings.Split(strings.TrimPrefix(s.Spec.Name, app.StackName()+"_"), "_")
			secretName := strings.Join(sname[:len(sname)-1], "_")
			data := secretsToStore[secretName]
			fmt.Println(s.Spec.Name)
			fmt.Println(secretName)
			fmt.Println(data)
			if err := client.StoreSecret(cl2, s.Spec.Name, data); err != nil {
				log.Info(err)
			}
		}

		for _, volume := range volumes {
			fileName := fmt.Sprintf("%s.tar.gz", volume.Name)

			log.Infof("moving volume: %s", volume.Name)
			log.Debug("creating %s", fileName)
			cmd := exec.Command("ssh", app.Server, "-tt", fmt.Sprintf("sudo tar --same-owner -czhpf %s -C /var/lib/docker/volumes %s", fileName, volume.Name))
			if out, err := cmd.CombinedOutput(); err != nil {
				fmt.Println(string(out))
				fmt.Println(err)
			}
			log.Debug("copying %s to local machine", fileName)
			cmd = exec.Command("scp", fmt.Sprintf("%s:%s", app.Server, fileName), fileName)
			if out, err := cmd.CombinedOutput(); err != nil {
				fmt.Println(string(out))
				fmt.Println(err)
			}
			log.Debug("copying %s to %s", fileName, args[1])
			cmd = exec.Command("scp", fileName, fmt.Sprintf("%s:%s", args[1], fileName))
			if out, err := cmd.CombinedOutput(); err != nil {
				fmt.Println(string(out))
				fmt.Println(err)
			}
			log.Debug("extracting %s on %s", fileName, args[1])
			cmd = exec.Command("ssh", args[1], "-tt", fmt.Sprintf("sudo tar --same-owner -xzpf %s -C /var/lib/docker/volumes", fileName))
			if out, err := cmd.CombinedOutput(); err != nil {
				fmt.Println(string(out))
				fmt.Println(err)
			}
			cmd = exec.Command("ssh", args[1], "-tt", fmt.Sprintf("sudo rm %s", fileName))
			if out, err := cmd.CombinedOutput(); err != nil {
				fmt.Println(string(out))
				fmt.Println(err)
			}
			cmd = exec.Command("ssh", app.Server, "-tt", fmt.Sprintf("sudo rm %s", fileName))
			if out, err := cmd.CombinedOutput(); err != nil {
				fmt.Println(string(out))
				fmt.Println(err)
			}
		}

		fmt.Println(strings.ReplaceAll(app.Path, app.Server, args[1]))
		if err := copyFile(app.Path, strings.ReplaceAll(app.Path, app.Server, args[1])); err != nil {
			return err
		}
		if err := os.Remove(app.Path); err != nil {
			return err
		}

		// AppDeployCommand.Run(cmd, args)

		// app = internal.ValidateApp(args)
		// cl, err := client.New(app.Server)
		// if err != nil {
		// 	return err
		// }
		//
		// composeFiles, err := app.Recipe.GetComposeFiles(app.Env)
		// if err != nil {
		// 	log.Fatal(err)
		// }
		// stackName := app.StackName()
		// deployOpts := stack.Deploy{
		// 	Composefiles: composeFiles,
		// 	Namespace:    stackName,
		// 	Prune:        false,
		// 	ResolveImage: stack.ResolveImageAlways,
		// 	Detach:       false,
		// }
		// compose, err := appPkg.GetAppComposeConfig(app.Name, deployOpts, app.Env)
		// if err != nil {
		// 	return err
		// }
		// serviceNames, err := appPkg.GetAppServiceNames(app.Name)
		// if err != nil {
		// 	log.Fatal(err)
		// }
		//
		// f, err := app.Filters(true, false, serviceNames...)
		// if err != nil {
		// 	log.Fatal(err)
		// }
		// if err := stack.RunDeploy(
		// 	cl,
		// 	deployOpts,
		// 	compose,
		// 	app.Name,
		// 	app.Server,
		// 	internal.DontWaitConverge,
		// 	f,
		// ); err != nil {
		// 	log.Fatal(err)
		// }

		return nil
	},
}

func copyFile(src string, dst string) error {
	// Read all content of src to data, may cause OOM for a large file.
	data, err := os.ReadFile(src)
	if err != nil {
		return err
	}
	// Write data to dst
	err = os.WriteFile(dst, data, 0o644)
	if err != nil {
		return err
	}
	return nil
}