91 lines
2.3 KiB
Go
91 lines
2.3 KiB
Go
package config
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import (
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"fmt"
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"os"
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"strconv"
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"strings"
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"time"
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)
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type Config struct {
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Address string
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DatabaseURL string
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JWTSecret string
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TokenTTL time.Duration
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MaxUploadMB int64
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FrontendURL string
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RabbitMQURL string
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GoLoose GoLooseConfig
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}
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type GoLooseConfig struct {
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AuthDomain string
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AppDomain string
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CAFile string
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Tenants map[string]GoLooseTenant
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}
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type GoLooseTenant struct {
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ClientID string
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ClientSecret string
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}
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// GoLooseCredentialEnv returns the environment variable names holding the Go
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// Loose client credentials of a tenant.
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func GoLooseCredentialEnv(slug string) (idEnv, secretEnv string) {
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prefix := "GO_LOOSE_" + strings.ToUpper(slug)
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return prefix + "_CLIENT_ID", prefix + "_CLIENT_SECRET"
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}
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func Load() (Config, error) {
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ttl, err := time.ParseDuration(env("TOKEN_TTL", "8h"))
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if err != nil {
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return Config{}, fmt.Errorf("parse TOKEN_TTL: %w", err)
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}
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maxUploadMB, err := strconv.ParseInt(env("MAX_UPLOAD_MB", "10"), 10, 64)
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if err != nil || maxUploadMB < 1 {
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return Config{}, fmt.Errorf("MAX_UPLOAD_MB must be a positive integer")
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}
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cfg := Config{
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Address: env("ADDRESS", ":8080"),
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DatabaseURL: env("DATABASE_URL", "postgres://go_guess:go_guess@localhost:5432/?sslmode=disable"),
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JWTSecret: os.Getenv("JWT_SECRET"),
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TokenTTL: ttl,
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MaxUploadMB: maxUploadMB,
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FrontendURL: env("FRONTEND_URL", "http://localhost:5173"),
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RabbitMQURL: env("RABBITMQ_URL", "amqp://guest:guest@localhost:5672/"),
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GoLoose: loadGoLoose(),
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}
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if len(cfg.JWTSecret) < 32 {
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return Config{}, fmt.Errorf("JWT_SECRET must contain at least 32 characters")
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}
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return cfg, nil
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}
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func loadGoLoose() GoLooseConfig {
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cfg := GoLooseConfig{
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AuthDomain: env("GO_LOOSE_AUTH_DOMAIN", "auth.dev"),
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AppDomain: env("GO_LOOSE_APP_DOMAIN", "guess.dev"),
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CAFile: os.Getenv("GO_LOOSE_CA_FILE"),
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Tenants: map[string]GoLooseTenant{},
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}
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add := func(slug string) {
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idEnv, secretEnv := GoLooseCredentialEnv(slug)
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id, secret := os.Getenv(idEnv), os.Getenv(secretEnv)
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if id == "" || secret == "" {
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return
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}
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cfg.Tenants[slug] = GoLooseTenant{ClientID: id, ClientSecret: secret}
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}
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add("nmbs")
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add("ypto")
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return cfg
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}
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func env(key, fallback string) string {
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if value := os.Getenv(key); value != "" {
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return value
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}
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return fallback
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}
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