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package base
import (
"context"
"fmt"
"reflect"
"strings"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
"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"
"github.com/hetznercloud/hcloud-go/v2/hcloud"
)
// UpdateCmd allows defining commands for updating a resource.
type UpdateCmd struct {
ResourceNameSingular string // e.g. "server"
ShortDescription string
NameSuggestions func(client hcapi2.Client) func() []string
DefineFlags func(*cobra.Command)
Fetch func(ctx context.Context, client hcapi2.Client, cmd *cobra.Command, idOrName string) (interface{}, *hcloud.Response, error)
Update func(ctx context.Context, client hcapi2.Client, cmd *cobra.Command, resource interface{}, flags map[string]pflag.Value) error
}
// CobraCommand creates a command that can be registered with cobra.
func (uc *UpdateCmd) CobraCommand(
ctx context.Context, client hcapi2.Client, tokenEnsurer state.TokenEnsurer,
) *cobra.Command {
cmd := &cobra.Command{
Use: fmt.Sprintf("update [FLAGS] %s", strings.ToUpper(uc.ResourceNameSingular)),
Short: uc.ShortDescription,
Args: cobra.ExactArgs(1),
ValidArgsFunction: cmpl.SuggestArgs(cmpl.SuggestCandidatesF(uc.NameSuggestions(client))),
TraverseChildren: true,
DisableFlagsInUseLine: true,
PreRunE: util.ChainRunE(tokenEnsurer.EnsureToken),
RunE: func(cmd *cobra.Command, args []string) error {
return uc.Run(ctx, client, cmd, args)
},
}
uc.DefineFlags(cmd)
return cmd
}
// Run executes a update command.
func (uc *UpdateCmd) Run(ctx context.Context, client hcapi2.Client, cmd *cobra.Command, args []string) error {
idOrName := args[0]
resource, _, err := uc.Fetch(ctx, client, cmd, idOrName)
if err != nil {
return err
}
// resource is an interface that always has a type, so the interface is never nil
// (i.e. == nil) is always false.
if reflect.ValueOf(resource).IsNil() {
return fmt.Errorf("%s not found: %s", uc.ResourceNameSingular, idOrName)
}
// The inherited commands should not need to parse the flags themselves
// or use the cobra command, therefore we fill them in a map here and
// pass the map then to the update method. A caller can/should rely on
// the map to contain all the flag keys that were specified.
flags := make(map[string]pflag.Value, cmd.Flags().NFlag())
cmd.Flags().VisitAll(func(flag *pflag.Flag) {
flags[flag.Name] = flag.Value
})
if err := uc.Update(ctx, client, cmd, resource, flags); err != nil {
return fmt.Errorf("updating %s %s failed: %s", uc.ResourceNameSingular, idOrName, err)
}
fmt.Printf("%s %v updated\n", uc.ResourceNameSingular, idOrName)
return nil
}
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