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package base
import (
"context"
"errors"
"fmt"
"strings"
"github.com/spf13/cobra"
"github.com/hetznercloud/cli/internal/cmd/cmpl"
"github.com/hetznercloud/cli/internal/cmd/util"
"github.com/hetznercloud/cli/internal/hcapi2"
"github.com/hetznercloud/cli/internal/state"
)
// LabelCmds allows defining commands for adding labels to resources.
type LabelCmds struct {
ResourceNameSingular string
ShortDescriptionAdd string
ShortDescriptionRemove string
NameSuggestions func(client hcapi2.Client) func() []string
LabelKeySuggestions func(client hcapi2.Client) func(idOrName string) []string
FetchLabels func(ctx context.Context, client hcapi2.Client, idOrName string) (map[string]string, int64, error)
SetLabels func(ctx context.Context, client hcapi2.Client, id int64, labels map[string]string) error
}
// AddCobraCommand creates a command that can be registered with cobra.
func (lc *LabelCmds) AddCobraCommand(
ctx context.Context, client hcapi2.Client, tokenEnsurer state.TokenEnsurer,
) *cobra.Command {
cmd := &cobra.Command{
Use: fmt.Sprintf("add-label [FLAGS] %s LABEL", strings.ToUpper(lc.ResourceNameSingular)),
Short: lc.ShortDescriptionAdd,
Args: cobra.ExactArgs(2),
ValidArgsFunction: cmpl.SuggestArgs(cmpl.SuggestCandidatesF(lc.NameSuggestions(client))),
TraverseChildren: true,
DisableFlagsInUseLine: true,
PreRunE: util.ChainRunE(validateAddLabel, tokenEnsurer.EnsureToken),
RunE: func(cmd *cobra.Command, args []string) error {
return lc.RunAdd(ctx, client, cmd, args)
},
}
cmd.Flags().BoolP("overwrite", "o", false, "Overwrite label if it exists already")
return cmd
}
// RunAdd executes an add label command
func (lc *LabelCmds) RunAdd(ctx context.Context, client hcapi2.Client, cmd *cobra.Command, args []string) error {
overwrite, _ := cmd.Flags().GetBool("overwrite")
idOrName := args[0]
labels, id, err := lc.FetchLabels(ctx, client, idOrName)
if err != nil {
return err
}
if labels == nil {
labels = map[string]string{}
}
key, val := util.SplitLabelVars(args[1])
if _, ok := labels[key]; ok && !overwrite {
return fmt.Errorf("label %s on %s %d already exists", key, lc.ResourceNameSingular, id)
}
labels[key] = val
if err := lc.SetLabels(ctx, client, id, labels); err != nil {
return err
}
fmt.Printf("Label %s added to %s %d\n", key, lc.ResourceNameSingular, id)
return nil
}
func validateAddLabel(cmd *cobra.Command, args []string) error {
label := util.SplitLabel(args[1])
if len(label) != 2 {
return fmt.Errorf("invalid label: %s", args[1])
}
return nil
}
// RemoveCobraCommand creates a command that can be registered with cobra.
func (lc *LabelCmds) RemoveCobraCommand(
ctx context.Context, client hcapi2.Client, tokenEnsurer state.TokenEnsurer,
) *cobra.Command {
cmd := &cobra.Command{
Use: fmt.Sprintf("remove-label [FLAGS] %s LABEL", strings.ToUpper(lc.ResourceNameSingular)),
Short: lc.ShortDescriptionRemove,
Args: cobra.RangeArgs(1, 2),
ValidArgsFunction: cmpl.SuggestArgs(
cmpl.SuggestCandidatesF(lc.NameSuggestions(client)),
cmpl.SuggestCandidatesCtx(func(_ *cobra.Command, args []string) []string {
if len(args) != 1 {
return nil
}
return lc.LabelKeySuggestions(client)(args[0])
}),
),
TraverseChildren: true,
DisableFlagsInUseLine: true,
PreRunE: util.ChainRunE(validateRemoveLabel, tokenEnsurer.EnsureToken),
RunE: func(cmd *cobra.Command, args []string) error {
return lc.RunRemove(ctx, client, cmd, args)
},
}
cmd.Flags().BoolP("all", "a", false, "Remove all labels")
return cmd
}
// RunRemove executes a remove label command
func (lc *LabelCmds) RunRemove(ctx context.Context, client hcapi2.Client, cmd *cobra.Command, args []string) error {
all, _ := cmd.Flags().GetBool("all")
idOrName := args[0]
labels, id, err := lc.FetchLabels(ctx, client, idOrName)
if err != nil {
return err
}
if all {
labels = make(map[string]string)
} else {
key := args[1]
if _, ok := labels[key]; !ok {
return fmt.Errorf("label %s on %s %d does not exist", key, lc.ResourceNameSingular, id)
}
delete(labels, key)
}
if err := lc.SetLabels(ctx, client, id, labels); err != nil {
return err
}
if all {
fmt.Printf("All labels removed from %s %d\n", lc.ResourceNameSingular, id)
} else {
fmt.Printf("Label %s removed from %s %d\n", args[1], lc.ResourceNameSingular, id)
}
return nil
}
func validateRemoveLabel(cmd *cobra.Command, args []string) error {
all, _ := cmd.Flags().GetBool("all")
if all && len(args) == 2 {
return errors.New("must not specify a label key when using --all/-a")
}
if !all && len(args) != 2 {
return errors.New("must specify a label key when not using --all/-a")
}
return nil
}
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