package app

import (
	"context"
	"fmt"
	"os"

	"coopcloud.tech/abra/cli/internal"
	"coopcloud.tech/abra/pkg/autocomplete"
	"coopcloud.tech/abra/pkg/client"
	stack "coopcloud.tech/abra/pkg/upstream/stack"
	"github.com/AlecAivazis/survey/v2"
	"github.com/docker/docker/api/types"
	"github.com/docker/docker/api/types/filters"
	"github.com/sirupsen/logrus"
	"github.com/urfave/cli"
)

// Volumes stores the variable from VolumesFlag
var Volumes bool

// VolumesFlag is used to specify if volumes should be deleted when deleting an app
var VolumesFlag = &cli.BoolFlag{
	Name:        "volumes",
	Destination: &Volumes,
}

var appRemoveCommand = cli.Command{
	Name:    "remove",
	Aliases: []string{"rm"},
	Usage:   "Remove an already undeployed app",
	Flags: []cli.Flag{
		VolumesFlag,
		internal.ForceFlag,
		internal.DebugFlag,
		internal.NoInputFlag,
	},
	Before: internal.SubCommandBefore,
	Action: func(c *cli.Context) error {
		app := internal.ValidateApp(c)

		if !internal.Force {
			response := false
			prompt := &survey.Confirm{
				Message: fmt.Sprintf("about to remove %s, are you sure?", app.Name),
			}
			if err := survey.AskOne(prompt, &response); err != nil {
				logrus.Fatal(err)
			}
			if !response {
				logrus.Fatal("aborting as requested")
			}
		}

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

		isDeployed, _, err := stack.IsDeployed(context.Background(), cl, app.StackName())
		if err != nil {
			logrus.Fatal(err)
		}
		if isDeployed {
			logrus.Fatalf("%s is still deployed. Run \"abra app undeploy %s \" or pass --force", app.Name, app.Name)
		}

		fs := filters.NewArgs()
		fs.Add("name", app.StackName())
		secretList, err := cl.SecretList(context.Background(), types.SecretListOptions{Filters: fs})
		if err != nil {
			logrus.Fatal(err)
		}

		secrets := make(map[string]string)
		var secretNames []string

		for _, cont := range secretList {
			secrets[cont.Spec.Annotations.Name] = cont.ID // we have to map the names to ID's
			secretNames = append(secretNames, cont.Spec.Annotations.Name)
		}

		if len(secrets) > 0 {
			var secretNamesToRemove []string

			if !internal.Force {
				secretsPrompt := &survey.MultiSelect{
					Message: "which secrets do you want to remove?",
					Help:    "'x' indicates selected, enter / return to confirm, ctrl-c to exit, vim mode is enabled",
					VimMode: true,
					Options: secretNames,
					Default: secretNames,
				}
				if err := survey.AskOne(secretsPrompt, &secretNamesToRemove); err != nil {
					logrus.Fatal(err)
				}
			}

			for _, name := range secretNamesToRemove {
				err := cl.SecretRemove(context.Background(), secrets[name])
				if err != nil {
					logrus.Fatal(err)
				}
				logrus.Info(fmt.Sprintf("secret: %s removed", name))
			}
		} else {
			logrus.Info("no secrets to remove")
		}

		volumeListOKBody, err := cl.VolumeList(context.Background(), fs)
		volumeList := volumeListOKBody.Volumes
		if err != nil {
			logrus.Fatal(err)
		}

		var vols []string
		for _, vol := range volumeList {
			vols = append(vols, vol.Name)
		}

		if len(vols) > 0 {
			if Volumes {
				var removeVols []string
				if !internal.Force {
					volumesPrompt := &survey.MultiSelect{
						Message: "which volumes do you want to remove?",
						Help:    "'x' indicates selected, enter / return to confirm, ctrl-c to exit, vim mode is enabled",
						VimMode: true,
						Options: vols,
						Default: vols,
					}
					if err := survey.AskOne(volumesPrompt, &removeVols); err != nil {
						logrus.Fatal(err)
					}
				}
				for _, vol := range removeVols {
					err := cl.VolumeRemove(context.Background(), vol, internal.Force) // last argument is for force removing
					if err != nil {
						logrus.Fatal(err)
					}
					logrus.Info(fmt.Sprintf("volume %s removed", vol))
				}
			} else {
				logrus.Info("no volumes were removed")
			}
		} else {
			if Volumes {
				logrus.Info("no volumes to remove")
			}
		}

		err = os.Remove(app.Path)
		if err != nil {
			logrus.Fatal(err)
		}
		logrus.Info(fmt.Sprintf("file: %s removed", app.Path))

		return nil
	},
	BashComplete: autocomplete.AppNameComplete,
}