init

back/config/env/env.go

@@ -0,0 +1,64 @@
+package env
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"time"
+)
+
+type Config struct {
+	Port            int
+	ConfigPath      string
+	FrontDir        string // when set, serves the Astro static build at "/"
+	SearchTTL       time.Duration
+	CleanupInterval time.Duration
+	Demo            bool // when true, disables searches and config mutations
+}
+
+func Load() (*Config, error) {
+	cfg := &Config{
+		Port:            8080,
+		ConfigPath:      "/etc/iky/config.yaml",
+		SearchTTL:       48 * time.Hour,
+		CleanupInterval: time.Hour,
+	}
+
+	if v := os.Getenv("IKY_PORT"); v != "" {
+		p, err := strconv.Atoi(v)
+		if err != nil || p < 1 || p > 65535 {
+			return nil, fmt.Errorf("env: IKY_PORT %q is not a valid port number", v)
+		}
+		cfg.Port = p
+	}
+
+	if v := os.Getenv("IKY_CONFIG"); v != "" {
+		cfg.ConfigPath = v
+	}
+
+	if v := os.Getenv("IKY_FRONT_DIR"); v != "" {
+		cfg.FrontDir = v
+	}
+
+	if v := os.Getenv("IKY_SEARCH_TTL"); v != "" {
+		d, err := time.ParseDuration(v)
+		if err != nil {
+			return nil, fmt.Errorf("env: IKY_SEARCH_TTL %q is not a valid duration", v)
+		}
+		cfg.SearchTTL = d
+	}
+
+	if v := os.Getenv("IKY_CLEANUP_INTERVAL"); v != "" {
+		d, err := time.ParseDuration(v)
+		if err != nil {
+			return nil, fmt.Errorf("env: IKY_CLEANUP_INTERVAL %q is not a valid duration", v)
+		}
+		cfg.CleanupInterval = d
+	}
+
+	if v := os.Getenv("IKY_DEMO"); v == "true" || v == "1" {
+		cfg.Demo = true
+	}
+
+	return cfg, nil
+}