package server

import (
	"fmt"
	"strings"

	"coopcloud.tech/abra/cli/formatter"
	"coopcloud.tech/abra/cli/internal"
	"coopcloud.tech/libcapsul"
	"github.com/AlecAivazis/survey/v2"
	"github.com/hetznercloud/hcloud-go/hcloud"
	"github.com/sirupsen/logrus"
	"github.com/urfave/cli/v2"
)

func newHetznerCloudVPS(c *cli.Context) error {
	if err := internal.EnsureNewHetznerCloudVPSFlags(c); err != nil {
		return err
	}

	client := hcloud.NewClient(hcloud.WithToken(internal.HetznerCloudAPIToken))

	var sshKeysRaw []string
	var sshKeys []*hcloud.SSHKey
	for _, sshKey := range c.StringSlice("ssh-keys") {
		sshKey, _, err := client.SSHKey.GetByName(c.Context, sshKey)
		if err != nil {
			return err
		}
		sshKeys = append(sshKeys, sshKey)
		sshKeysRaw = append(sshKeysRaw, sshKey.Name)
	}

	serverOpts := hcloud.ServerCreateOpts{
		Name:       internal.HetznerCloudName,
		ServerType: &hcloud.ServerType{Name: internal.HetznerCloudType},
		Image:      &hcloud.Image{Name: internal.HetznerCloudImage},
		SSHKeys:    sshKeys,
		Location:   &hcloud.Location{Name: internal.HetznerCloudLocation},
	}

	tableColumns := []string{"name", "type", "image", "ssh-keys", "location"}
	table := formatter.CreateTable(tableColumns)
	table.Append([]string{
		internal.HetznerCloudName,
		internal.HetznerCloudType,
		internal.HetznerCloudImage,
		strings.Join(sshKeysRaw, "\n"),
		internal.HetznerCloudLocation,
	})
	table.Render()

	response := false
	prompt := &survey.Confirm{
		Message: "continue with capsul creation?",
	}

	if err := survey.AskOne(prompt, &response); err != nil {
		return err
	}

	if !response {
		logrus.Fatal("exiting as requested")
	}

	res, _, err := client.Server.Create(c.Context, serverOpts)
	if err != nil {
		return err
	}

	tableColumns = []string{"name", "ipv4", "root password"}
	table = formatter.CreateTable(tableColumns)
	if len(sshKeys) > 0 {
		table.Append([]string{
			internal.HetznerCloudName,
			res.Server.PublicNet.IPv4.IP.String(),
			"N/A (using SSH keys)",
		})
	} else {
		table.Append([]string{
			internal.HetznerCloudName,
			res.Server.PublicNet.IPv4.IP.String(),
			res.RootPassword,
		})
	}
	table.SetCaption(true, "hetzner cloud creation response")
	table.Render()

	return nil
}

func newCapsulVPS(c *cli.Context) error {
	if err := internal.EnsureNewCapsulVPSFlags(c); err != nil {
		return err
	}

	capsulCreateURL := fmt.Sprintf("https://%s/api/capsul/create", internal.CapsulInstanceURL)

	var sshKeys []string
	for _, sshKey := range c.StringSlice("capsul-ssh-keys") {
		sshKeys = append(sshKeys, sshKey)
	}

	tableColumns := []string{"instance", "name", "type", "image", "ssh-keys"}
	table := formatter.CreateTable(tableColumns)
	table.Append([]string{
		internal.CapsulInstanceURL,
		internal.CapsulName,
		internal.CapsulType,
		internal.CapsulImage,
		strings.Join(sshKeys, "\n"),
	})
	table.Render()

	response := false
	prompt := &survey.Confirm{
		Message: "continue with capsul creation?",
	}

	if err := survey.AskOne(prompt, &response); err != nil {
		return err
	}

	if !response {
		logrus.Fatal("exiting as requested")
	}

	capsulClient := libcapsul.New(capsulCreateURL, internal.CapsulAPIToken)
	resp, err := capsulClient.Create(
		internal.CapsulName,
		internal.CapsulType,
		internal.CapsulImage,
		sshKeys,
	)
	if err != nil {
		return err
	}

	tableColumns = []string{"Name", "ID"}
	table = formatter.CreateTable(tableColumns)
	table.Append([]string{internal.CapsulName, resp.ID})
	table.SetCaption(true, "capsul creation response")
	table.Render()

	return nil
}

var serverNewCommand = &cli.Command{
	Name:    "new",
	Aliases: []string{"n"},
	Usage:   "Create a new server using a 3rd party provider",
	Description: `
This command creates a new server via a 3rd party provider.

The following providers are supported:

		Capsul https://git.cyberia.club/Cyberia/capsul-flask
    Hetzner Cloud https://docs.hetzner.com/cloud

You may invoke this command in "wizard" mode and be prompted for input:

    abra record new
`,
	ArgsUsage: "<provider>",
	Flags: []cli.Flag{
		internal.ServerProviderFlag,

		// Capsul
		internal.CapsulInstanceURLFlag,
		internal.CapsulTypeFlag,
		internal.CapsulImageFlag,
		internal.CapsulSSHKeysFlag,
		internal.CapsulAPITokenFlag,

		// Hetzner
		internal.HetznerCloudNameFlag,
		internal.HetznerCloudTypeFlag,
		internal.HetznerCloudImageFlag,
		internal.HetznerCloudSSHKeysFlag,
		internal.HetznerCloudLocationFlag,
		internal.HetznerCloudAPITokenFlag,
	},
	Action: func(c *cli.Context) error {
		if err := internal.EnsureServerProvider(); err != nil {
			logrus.Fatal(err)
		}

		switch internal.ServerProvider {
		case "capsul":
			if err := newCapsulVPS(c); err != nil {
				logrus.Fatal(err)
			}
		case "hetzner-cloud":
			if err := newHetznerCloudVPS(c); err != nil {
				logrus.Fatal(err)
			}
		}

		return nil
	},
}