refactor!: abra server interface more coherent

This follows our app new UX and interactive mode design.

cli/internal/server.go

@@ -0,0 +1,191 @@
+package internal
+
+import (
+	"fmt"
+
+	"github.com/AlecAivazis/survey/v2"
+	"github.com/urfave/cli/v2"
+)
+
+// EnsureServerProvider ensures a 3rd party server provider is chosen.
+func EnsureServerProvider() error {
+	if ServerProvider == "" && !NoInput {
+		prompt := &survey.Select{
+			Message: "Select server provider",
+			Options: []string{"capsul", "hetzner-cloud"},
+		}
+
+		if err := survey.AskOne(prompt, &ServerProvider); err != nil {
+			return err
+		}
+	}
+
+	if ServerProvider == "" {
+		return fmt.Errorf("missing server provider?")
+	}
+
+	return nil
+}
+
+// EnsureCapsulNewFlags ensure all flags are present.
+func EnsureNewCapsulVPSFlags(c *cli.Context) error {
+	if CapsulName == "" && !NoInput {
+		prompt := &survey.Input{
+			Message: "specify capsul name",
+		}
+		if err := survey.AskOne(prompt, &CapsulName); err != nil {
+			return err
+		}
+	}
+
+	if CapsulInstanceURL == "" && !NoInput {
+		prompt := &survey.Input{
+			Message: "specify capsul instance URL",
+			Default: "yolo.servers.coop",
+		}
+		if err := survey.AskOne(prompt, &CapsulInstanceURL); err != nil {
+			return err
+		}
+	}
+
+	if CapsulType == "" && !NoInput {
+		prompt := &survey.Input{
+			Message: "specify capsul type",
+			Default: "f1-xs",
+		}
+		if err := survey.AskOne(prompt, &CapsulType); err != nil {
+			return err
+		}
+	}
+
+	if CapsulImage == "" && !NoInput {
+		prompt := &survey.Input{
+			Message: "specify capsul image",
+			Default: "debian10",
+		}
+		if err := survey.AskOne(prompt, &CapsulImage); err != nil {
+			return err
+		}
+	}
+
+	if len(CapsulSSHKeys.Value()) == 0 && !NoInput {
+		prompt := &survey.Input{
+			Message: "specify capsul SSH keys",
+			Default: "me@foo.com,you@bar.com",
+		}
+		if err := survey.AskOne(prompt, &CapsulSSHKeys); err != nil {
+			return err
+		}
+	}
+
+	if CapsulAPIToken == "" && !NoInput {
+		prompt := &survey.Input{
+			Message: "specify capsul API token",
+		}
+		if err := survey.AskOne(prompt, &CapsulAPIToken); err != nil {
+			return err
+		}
+	}
+
+	if CapsulName == "" {
+		ShowSubcommandHelpAndError(c, fmt.Errorf("missing capsul name?"))
+	}
+	if CapsulInstanceURL == "" {
+		ShowSubcommandHelpAndError(c, fmt.Errorf("missing capsul instance url?"))
+	}
+	if CapsulType == "" {
+		ShowSubcommandHelpAndError(c, fmt.Errorf("missing capsul type?"))
+	}
+	if CapsulImage == "" {
+		ShowSubcommandHelpAndError(c, fmt.Errorf("missing capsul image?"))
+	}
+	if len(CapsulSSHKeys.Value()) == 0 {
+		ShowSubcommandHelpAndError(c, fmt.Errorf("missing capsul ssh keys?"))
+	}
+	if CapsulAPIToken == "" {
+		ShowSubcommandHelpAndError(c, fmt.Errorf("missing capsul API token?"))
+	}
+
+	return nil
+}
+
+// EnsureNewHetznerCloudVPSFlags ensure all flags are present.
+func EnsureNewHetznerCloudVPSFlags(c *cli.Context) error {
+	if HetznerCloudName == "" && !NoInput {
+		prompt := &survey.Input{
+			Message: "specify hetzner cloud VPS name",
+		}
+		if err := survey.AskOne(prompt, &HetznerCloudName); err != nil {
+			return err
+		}
+	}
+
+	if HetznerCloudType == "" && !NoInput {
+		prompt := &survey.Input{
+			Message: "specify hetzner cloud VPS type",
+			Default: "cx11",
+		}
+		if err := survey.AskOne(prompt, &HetznerCloudType); err != nil {
+			return err
+		}
+	}
+
+	if HetznerCloudImage == "" && !NoInput {
+		prompt := &survey.Input{
+			Message: "specify hetzner cloud VPS image",
+			Default: "debian-10",
+		}
+		if err := survey.AskOne(prompt, &HetznerCloudImage); err != nil {
+			return err
+		}
+	}
+
+	if len(HetznerCloudSSHKeys.Value()) == 0 && !NoInput {
+		prompt := &survey.Input{
+			Message: "specify hetzner cloud SSH keys",
+			Default: "me@foo.com,you@bar.com",
+		}
+		if err := survey.AskOne(prompt, &HetznerCloudSSHKeys); err != nil {
+			return err
+		}
+	}
+
+	if HetznerCloudLocation == "" && !NoInput {
+		prompt := &survey.Input{
+			Message: "specify hetzner cloud VPS location",
+		}
+		if err := survey.AskOne(prompt, &HetznerCloudLocation); err != nil {
+			return err
+		}
+	}
+
+	if HetznerCloudAPIToken == "" && !NoInput {
+		prompt := &survey.Input{
+			Message: "specify hetzner cloud API token",
+		}
+		if err := survey.AskOne(prompt, &HetznerCloudAPIToken); err != nil {
+			return err
+		}
+	}
+
+	if HetznerCloudName == "" {
+		ShowSubcommandHelpAndError(c, fmt.Errorf("missing hetzner cloud VPS name?"))
+	}
+	if HetznerCloudType == "" {
+		ShowSubcommandHelpAndError(c, fmt.Errorf("missing hetzner cloud VPS type?"))
+	}
+	if HetznerCloudImage == "" {
+		ShowSubcommandHelpAndError(c, fmt.Errorf("missing hetzner cloud image?"))
+	}
+	if len(HetznerCloudSSHKeys.Value()) == 0 {
+		ShowSubcommandHelpAndError(c, fmt.Errorf("missing hetzner cloud ssh keys?"))
+	}
+	if HetznerCloudLocation == "" {
+		ShowSubcommandHelpAndError(c, fmt.Errorf("missing hetzner cloud VPS location?"))
+	}
+	if HetznerCloudAPIToken == "" {
+		ShowSubcommandHelpAndError(c, fmt.Errorf("missing hetzner cloud API token?"))
+	}
+
+	return nil
+}