88 lines
1.8 KiB
Go
88 lines
1.8 KiB
Go
// Copyright 2024 Joshua Rich <joshua.rich@gmail.com>.
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// SPDX-License-Identifier: MIT
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package cli
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import (
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"embed"
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"log/slog"
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"os"
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"path/filepath"
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)
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const (
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assetsPath = "assets"
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assetsExt = ".txt"
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)
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//go:embed assets
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var content embed.FS
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// CmdOpts are the global command-line options common across all commands.
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type CmdOpts struct {
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Logger *slog.Logger
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Headless bool
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Path string
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}
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// Option represents a command-line option.
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type Option func(*CmdOpts) *CmdOpts
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// AddOptions adds the given options to a command.
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func AddOptions(options ...Option) *CmdOpts {
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commandOptions := &CmdOpts{}
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for _, option := range options {
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option(commandOptions)
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}
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return commandOptions
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}
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// RunHeadless sets the headless command-line option.
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func RunHeadless(opt bool) Option {
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return func(ctx *CmdOpts) *CmdOpts {
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ctx.Headless = opt
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return ctx
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}
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}
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// WithLogger sets the logger that will be inherited by the command.
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func WithLogger(logger *slog.Logger) Option {
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return func(ctx *CmdOpts) *CmdOpts {
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ctx.Logger = logger
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return ctx
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}
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}
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// WithPath sets a custom path for Go Hass Agent preferences, logs and data.
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func WithPath(path string) Option {
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return func(ctx *CmdOpts) *CmdOpts {
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ctx.Path = path
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return ctx
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}
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}
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// HeadlessFlag represents whether the agent is running headless or not.
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type HeadlessFlag bool
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func (f *HeadlessFlag) AfterApply() error {
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if os.Getenv("DISPLAY") == "" && !*f {
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slog.Warn("DISPLAY not set, running in headless mode by default (specify --terminal to suppress this warning).")
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*f = true
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}
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return nil
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}
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func showHelpTxt(file string) string {
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assetFile := filepath.Join(assetsPath, file+assetsExt)
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helpTxt, err := content.ReadFile(assetFile)
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if err != nil {
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slog.Error("Cannot read help text.", slog.Any("error", err))
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}
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return string(helpTxt)
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}
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