Read cointop config environment variables

cmd/commands/root.go

@@ -2,6 +2,8 @@ package cmd
 
 import (
 	"fmt"
+	"os"
+	"strconv"
 
 	"github.com/miguelmota/cointop/cointop"
 	"github.com/spf13/cobra"
@@ -10,24 +12,24 @@ import (
 // RootCmd ...
 func RootCmd() *cobra.Command {
 	var version bool
-	var test bool
-	var clean bool
-	var reset bool
-	var hideMarketbar bool
-	var hideChart bool
-	var hideStatusbar bool
-	var onlyTable bool
-	var silent bool
-	var noCache bool
 	var refreshRate uint
-	var config string
-	var cmcAPIKey string
-	var apiChoice string
-	var colorscheme string
-	var perPage = cointop.DefaultPerPage
-	var maxPages = cointop.DefaultMaxPages
-	var cacheDir string
-	var colorsDir string
+	test := getEnvBool("COINTOP_TEST")
+	clean := getEnvBool("COINTOP_CLEAN")
+	reset := getEnvBool("COINTOP_RESET")
+	hideMarketbar := getEnvBool("COINTOP_HIDE_MARKETBAR")
+	hideChart := getEnvBool("COINTOP_HIDE_CHART")
+	hideStatusbar := getEnvBool("COINTOP_HIDE_STATUSBAR")
+	onlyTable := getEnvBool("COINTOP_ONLY_TABLE")
+	silent := getEnvBool("COINTOP_SILENT")
+	noCache := getEnvBool("COINTOP_NO_CACHE")
+	colorscheme := os.Getenv("COINTOP_COLORSCHEME")
+	cacheDir := os.Getenv("COINTOP_CACHE_DIR")
+	colorsDir := os.Getenv("COINTOP_COLORS_DIR")
+	config := os.Getenv("COINTOP_CONFIG")
+	apiChoice := os.Getenv("COINTOP_API")
+	cmcAPIKey := os.Getenv("CMC_PRO_API_KEY")
+	perPage := cointop.DefaultPerPage
+	maxPages := cointop.DefaultMaxPages
 
 	rootCmd := &cobra.Command{
 		Use:   "cointop",
@@ -77,6 +79,13 @@ See git.io/cointop for more info.`,
 			if cmd.Flags().Changed("refresh-rate") {
 				refreshRateP = &refreshRate
 			}
+			if refreshRateP == nil {
+				value, ok := getEnvInt("COINTOP_REFRESH_RATE")
+				if ok {
+					uv := uint(value)
+					refreshRateP = &uv
+				}
+			}
 
 			ct, err := cointop.NewCointop(&cointop.Config{
 				CacheDir:            cacheDir,
@@ -102,25 +111,53 @@ See git.io/cointop for more info.`,
 		},
 	}
 
-	rootCmd.Flags().BoolVarP(&version, "version", "v", false, "Display current version")
-	rootCmd.Flags().BoolVarP(&test, "test", "", false, "Run test (for Homebrew)")
-	rootCmd.Flags().BoolVarP(&clean, "clean", "", false, "Wipe clean the cache")
-	rootCmd.Flags().BoolVarP(&reset, "reset", "", false, "Reset the config. Make sure to backup any relevant changes first!")
-	rootCmd.Flags().BoolVarP(&hideMarketbar, "hide-marketbar", "", false, "Hide the top marketbar")
-	rootCmd.Flags().BoolVarP(&hideChart, "hide-chart", "", false, "Hide the chart view")
-	rootCmd.Flags().BoolVarP(&hideStatusbar, "hide-statusbar", "", false, "Hide the bottom statusbar")
-	rootCmd.Flags().BoolVarP(&onlyTable, "only-table", "", false, "Show only the table. Hides the chart and top and bottom bars")
-	rootCmd.Flags().BoolVarP(&silent, "silent", "s", false, "Silence log ouput")
-	rootCmd.Flags().BoolVarP(&noCache, "no-cache", "", false, "No cache")
+	rootCmd.Flags().BoolVarP(&version, "version", "v", version, "Display current version")
+	rootCmd.Flags().BoolVarP(&test, "test", "", test, "Run test (for Homebrew)")
+	rootCmd.Flags().BoolVarP(&clean, "clean", "", clean, "Wipe clean the cache")
+	rootCmd.Flags().BoolVarP(&reset, "reset", "", reset, "Reset the config. Make sure to backup any relevant changes first!")
+	rootCmd.Flags().BoolVarP(&hideMarketbar, "hide-marketbar", "", hideMarketbar, "Hide the top marketbar")
+	rootCmd.Flags().BoolVarP(&hideChart, "hide-chart", "", hideChart, "Hide the chart view")
+	rootCmd.Flags().BoolVarP(&hideStatusbar, "hide-statusbar", "", hideStatusbar, "Hide the bottom statusbar")
+	rootCmd.Flags().BoolVarP(&onlyTable, "only-table", "", onlyTable, "Show only the table. Hides the chart and top and bottom bars")
+	rootCmd.Flags().BoolVarP(&silent, "silent", "s", silent, "Silence log ouput")
+	rootCmd.Flags().BoolVarP(&noCache, "no-cache", "", noCache, "No cache")
 	rootCmd.Flags().UintVarP(&refreshRate, "refresh-rate", "r", 60, "Refresh rate in seconds. Set to 0 to not auto-refresh")
 	rootCmd.Flags().UintVarP(&perPage, "per-page", "", perPage, "Per page")
 	rootCmd.Flags().UintVarP(&maxPages, "max-pages", "", maxPages, "Max number of pages")
-	rootCmd.Flags().StringVarP(&config, "config", "c", "", fmt.Sprintf("Config filepath. (default %s)", cointop.DefaultConfigFilepath))
-	rootCmd.Flags().StringVarP(&cmcAPIKey, "coinmarketcap-api-key", "", "", "Set the CoinMarketCap API key")
-	rootCmd.Flags().StringVarP(&apiChoice, "api", "", "", "API choice. Available choices are \"coinmarketcap\" and \"coingecko\"")
-	rootCmd.Flags().StringVarP(&colorscheme, "colorscheme", "", "", fmt.Sprintf("Colorscheme to use (default \"cointop\").\n%s", cointop.ColorschemeHelpString()))
+	rootCmd.Flags().StringVarP(&config, "config", "c", config, fmt.Sprintf("Config filepath. (default %s)", cointop.DefaultConfigFilepath))
+	rootCmd.Flags().StringVarP(&cmcAPIKey, "coinmarketcap-api-key", "", cmcAPIKey, "Set the CoinMarketCap API key")
+	rootCmd.Flags().StringVarP(&apiChoice, "api", "", apiChoice, "API choice. Available choices are \"coinmarketcap\" and \"coingecko\"")
+	rootCmd.Flags().StringVarP(&colorscheme, "colorscheme", "", colorscheme, fmt.Sprintf("Colorscheme to use (default \"cointop\").\n%s", cointop.ColorschemeHelpString()))
 	rootCmd.Flags().StringVarP(&cacheDir, "cache-dir", "", cacheDir, fmt.Sprintf("Cache directory (default %s)", cointop.DefaultCacheDir))
 	rootCmd.Flags().StringVarP(&colorsDir, "colors-dir", "", colorsDir, "Colorschemes directory")
 
 	return rootCmd
 }
+
+func getEnvBool(key string) bool {
+	val := os.Getenv(key)
+	if val == "" {
+		return false
+	}
+
+	v, err := strconv.ParseBool(val)
+	if err != nil {
+		return false
+	}
+
+	return v
+}
+
+func getEnvInt(key string) (int, bool) {
+	val := os.Getenv(key)
+	if val == "" {
+		return 0, false
+	}
+
+	v, err := strconv.Atoi(val)
+	if err != nil {
+		return 0, false
+	}
+
+	return v, true
+}