86 lines
2.3 KiB
Go
86 lines
2.3 KiB
Go
package config
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import (
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"errors"
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"fmt"
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"os"
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"strings"
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)
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type EpisodeAvailabilityMode string
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const (
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EpisodeAvailabilityModeAuto EpisodeAvailabilityMode = "auto"
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EpisodeAvailabilityModeLegacy EpisodeAvailabilityMode = "legacy"
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EpisodeAvailabilityModeJikan EpisodeAvailabilityMode = "jikan"
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)
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type Config struct {
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Port string
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// GinMode maps to gin.SetMode. When empty, the server uses release mode by default.
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GinMode string
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DatabaseFile string
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// Allow any Origin for CORS. Intended for local dev / reverse proxy setups only.
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CORSAllowAll bool
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EpisodeAvailabilityMode EpisodeAvailabilityMode
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// Optional. When empty, proxy token signing is disabled.
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PlaybackProxySecret string
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// Optional debug toggle for Jikan client tracing.
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JikanTrace bool
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}
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func Load() (Config, error) {
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cfg := Config{
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Port: firstNonEmpty(strings.TrimSpace(os.Getenv("PORT")), "3000"),
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GinMode: strings.TrimSpace(os.Getenv("GIN_MODE")),
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DatabaseFile: firstNonEmpty(strings.TrimSpace(os.Getenv("DATABASE_FILE")), "mal.db"),
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CORSAllowAll: strings.TrimSpace(os.Getenv("MAL_CORS_ALLOW_ALL")) == "1",
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PlaybackProxySecret: strings.TrimSpace(os.Getenv("PLAYBACK_PROXY_SECRET")),
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JikanTrace: truthy(strings.TrimSpace(os.Getenv("MAL_JIKAN_TRACE"))),
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EpisodeAvailabilityMode: EpisodeAvailabilityModeAuto,
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}
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if raw := strings.ToLower(strings.TrimSpace(os.Getenv("EPISODE_AVAILABILITY_MODE"))); raw != "" {
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switch EpisodeAvailabilityMode(raw) {
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case EpisodeAvailabilityModeAuto, EpisodeAvailabilityModeLegacy, EpisodeAvailabilityModeJikan:
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cfg.EpisodeAvailabilityMode = EpisodeAvailabilityMode(raw)
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default:
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return Config{}, fmt.Errorf("invalid EPISODE_AVAILABILITY_MODE: %q (expected auto|legacy|jikan)", raw)
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}
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}
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if strings.TrimSpace(cfg.Port) == "" {
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return Config{}, errors.New("PORT must not be empty")
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}
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if strings.TrimSpace(cfg.DatabaseFile) == "" {
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return Config{}, errors.New("DATABASE_FILE must not be empty")
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}
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return cfg, nil
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}
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func firstNonEmpty(values ...string) string {
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for _, v := range values {
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if strings.TrimSpace(v) != "" {
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return v
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}
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}
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return ""
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}
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func truthy(v string) bool {
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switch strings.ToLower(strings.TrimSpace(v)) {
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case "1", "true", "yes", "y", "on":
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return true
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default:
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return false
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}
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}
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