101 lines
2.5 KiB
Go
101 lines
2.5 KiB
Go
package console
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import (
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"context"
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"fmt"
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"os"
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"strings"
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"gitoa.ru/go-4devs/config"
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"gitoa.ru/go-4devs/config/definition"
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"gitoa.ru/go-4devs/config/definition/option"
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"gitoa.ru/go-4devs/config/param"
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"gitoa.ru/go-4devs/config/provider/arg"
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"gitoa.ru/go-4devs/config/validator"
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"gitoa.ru/go-4devs/config/value"
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"gitoa.ru/go-4devs/console/output"
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"gitoa.ru/go-4devs/console/output/descriptor"
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)
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//nolint:gochecknoinits
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func init() {
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MustRegister(help())
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}
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const (
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ArgumentCommandName = "command_name"
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OptionFormat = "format"
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)
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func help() *Command {
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return &Command{
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Name: CommandHelp,
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Description: `Displays help for a command`,
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Help: `
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The <info>{{ .Name }}</info> command displays help for a given command:
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<info>{{ .Bin }} {{ .Name }} list</info>
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You can also output the help in other formats by using the <comment>--format</comment> option:
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<info>{{ .Bin }} {{ .Name }} --format=xml list</info>
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To display the list of available commands, please use the <info>list</info> command.
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`,
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Execute: func(ctx context.Context, in config.Provider, out output.Output) error {
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var err error
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name := ReadValue(ctx, in, ArgumentCommandName).String()
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format := ReadValue(ctx, in, OptionFormat).String()
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des, err := descriptor.Find(format)
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if err != nil {
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return fmt.Errorf("find descriptor[%v]: %w", format, err)
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}
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cmd, err := Find(name)
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if err != nil {
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return fmt.Errorf("find cmd: %w", err)
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}
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def := definition.New()
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def.Add(Default()...)
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if err := cmd.Init(ctx, def); err != nil {
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return fmt.Errorf("init cmd: %w", err)
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}
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var bin string
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if len(os.Args) > 0 {
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bin = os.Args[0]
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}
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derr := des.Command(ctx, out, descriptor.Command{
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Bin: bin,
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Name: cmd.Name,
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Description: cmd.Description,
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Help: cmd.Help,
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Options: def.With(param.New(descriptor.TxtStyle())),
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})
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if derr != nil {
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return fmt.Errorf("descriptor help:%w", derr)
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}
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return nil
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},
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Configure: func(_ context.Context, config config.Definition) error {
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formats := descriptor.Descriptors()
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config.
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Add(
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arg.String(ArgumentCommandName, "The command name", arg.Default(value.New("help"))),
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option.String(OptionFormat, fmt.Sprintf("The output format (%s)", strings.Join(formats, ", ")),
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option.Required,
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option.Default(value.New(formats[0])),
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validator.Valid(
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validator.NotBlank,
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validator.Enum(formats...),
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),
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),
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)
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return nil
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},
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}
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}
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