package app

import (
	"context"
	"errors"

	abraFormatter "coopcloud.tech/abra/cli/formatter"
	"coopcloud.tech/abra/cli/internal"
	"coopcloud.tech/abra/client"
	"coopcloud.tech/abra/config"
	"github.com/AlecAivazis/survey/v2"
	"github.com/sirupsen/logrus"
	"github.com/urfave/cli/v2"
)

// getAppServer retrieves the server of an app.
func getAppServer(appName string) string {
	appFiles, err := config.LoadAppFiles("")
	if err != nil {
		logrus.Fatal(err)
	}

	var server string
	if app, ok := appFiles[appName]; ok {
		server = app.Server
	} else {
		logrus.Fatalf(`app "%s" does not exist`, appName)
	}
	return server
}

var appVolumeListCommand = &cli.Command{
	Name:    "list",
	Usage:   "list volumes associated with an app",
	Aliases: []string{"ls"},
	Action: func(c *cli.Context) error {
		appName := c.Args().First()
		if appName == "" {
			internal.ShowSubcommandHelpAndError(c, errors.New("no app name provided!"))
		}

		ctx := context.Background()
		server := getAppServer(appName)
		volumeList, err := client.GetVolumes(ctx, server, appName)
		if err != nil {
			logrus.Fatal(err)
		}
		table := abraFormatter.CreateTable([]string{"DRIVER", "VOLUME NAME"})
		var volTable [][]string
		for _, volume := range volumeList {
			volRow := []string{
				volume.Driver,
				volume.Name,
			}
			volTable = append(volTable, volRow)
		}
		table.AppendBulk(volTable)
		table.Render()
		return nil
	},
}

var appVolumeRemoveCommand = &cli.Command{
	Name:    "remove",
	Usage:   "remove volume(s) associated with an app",
	Aliases: []string{"rm"},
	Flags: []cli.Flag{
		internal.ForceFlag,
	},
	Action: func(c *cli.Context) error {
		appName := c.Args().First()
		if appName == "" {
			internal.ShowSubcommandHelpAndError(c, errors.New("no app name provided!"))
		}
		server := getAppServer(appName)
		ctx := context.Background()
		volumeList, err := client.GetVolumes(ctx, server, appName)
		if err != nil {
			logrus.Fatal(err)
		}
		volumeNames := client.GetVolumeNames(volumeList)

		var volumesToRemove []string
		if !internal.Force {
			volumesPrompt := &survey.MultiSelect{
				Message: "Which volumes do you want to remove?",
				Options: volumeNames,
				Default: volumeNames,
			}
			if err := survey.AskOne(volumesPrompt, &volumesToRemove); err != nil {
				logrus.Fatal(err)
			}
		} else {
			volumesToRemove = volumeNames
		}

		err = client.RemoveVolumes(ctx, server, volumesToRemove, internal.Force)
		if err != nil {
			logrus.Fatal(err)
		}
		logrus.Info("Volumes removed successfully.")
		return nil
	},
}

var appVolumeCommand = &cli.Command{
	Name:      "volume",
	Aliases:   []string{"v"},
	Usage:     "Manage app volumes",
	ArgsUsage: "<command>",
	Subcommands: []*cli.Command{
		appVolumeListCommand,
		appVolumeRemoveCommand,
	},
}