package app

import (
	"context"
	"errors"
	"os"
	"strings"

	"coopcloud.tech/abra/cli/internal"
	"coopcloud.tech/abra/client"
	"coopcloud.tech/abra/config"
	"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/v2"
)

// 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",
	Value:       false,
	Destination: &Volumes,
}

var Force bool

var ForceFlag = &cli.BoolFlag{
	Name:        "force",
	Value:       false,
	Destination: &Force,
}

var appRemoveCommand = &cli.Command{
	Name:    "remove",
	Aliases: []string{"rm", "delete"},
	Flags: []cli.Flag{
		VolumesFlag,
		ForceFlag,
	},
	Action: func(c *cli.Context) error {
		// Check if app name was provided by user
		AppName := c.Args().First()
		if AppName == "" {
			internal.ShowSubcommandHelpAndError(c, errors.New("No app name provided!"))
		}
		// Make sure that the user really wants to delete the app
		if !Force {
			response := false
			prompt := &survey.Confirm{
				Message: "About to delete " + AppName + ", are you sure?",
			}
			survey.AskOne(prompt, &response)
			if response == false {
				return errors.New("User aborted app removal")
			}
		}
		// Get app list
		AppFiles, err := config.LoadAppFiles("")
		if err != nil {
			return err
		}
		AppPath := AppFiles[AppName].Path
		host := AppFiles[AppName].Server
		// Initialize docker client
		ctx := context.Background()
		cl, err := client.NewClientWithContext(host)
		if err != nil {
			return err
		}
		// Remove the file
		err = os.Remove(AppPath)
		if err != nil {
			return err
		} else {
			logrus.Info("File :" + AppPath + " removed.")
		}

		// Check if the app has secrets
		fs := filters.NewArgs()
		fs.Add("name", AppName)
		SecretList, err := cl.SecretList(ctx, types.SecretListOptions{Filters: fs})
		if err != nil {
			return err
		}
		Secrets := make(map[string]string)
		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)
		}
		SecretNamesToRemove := []string{}

		// Ask if the user really wants to remove the apps
		if Force {
			SecretNamesToRemove = SecretNames
		} else {
			SecretsPrompt := &survey.MultiSelect{
				Message: "Which secrets do you want to remove?",
				Options: SecretNames,
				Default: SecretNames,
			}
			survey.AskOne(SecretsPrompt, &SecretNamesToRemove)
		}

		// Actually remove the secrets
		for _, name := range SecretNamesToRemove {
			// DEBUG: SecretIDsToRemove = append(SecretIDsToRemove, Secrets[name])
			err := cl.SecretRemove(ctx, Secrets[name])
			if err != nil {
				return err
			} else {
				logrus.Info("Secret: " + name + " removed")
			}
		}

		// Get volumes associated with the app
		VolumeListOKBody, err := cl.VolumeList(ctx, fs)
		VolumeList := VolumeListOKBody.Volumes
		if err != nil {
			return err
		}
		Vols := []string{}
		for _, vol := range VolumeList {
			Vols = append(Vols, vol.Name)
		}
		// Remove the volumes if desired
		if Volumes == true {

			RemoveVols := []string{}
			// If there's no --force, ask if the user wants to remove
			if Force {
				RemoveVols = Vols
			} else {
				VolumesPrompt := &survey.MultiSelect{
					Message: "Which volumes do you want to remove?",
					Options: Vols,
					Default: Vols,
				}
				survey.AskOne(VolumesPrompt, &RemoveVols)
			}
			// Remove the volumes
			for _, vol := range RemoveVols {
				err := cl.VolumeRemove(ctx, vol, Force) // false is for force removing
				if err != nil {
					return err
				} else {
					logrus.Info("Volume " + vol + " removed")
				}
			}
		} else {
			logrus.Info("No volumes were removed. Volumes left: " + strings.Join(Vols, ", "))
		}

		return nil
	},
}