first commit

2026-06-04 12:33:03 +00:00 · 2026-04-13 17:46:58 +02:00
commit 6e8fedf534
234 changed files with 53808 additions and 0 deletions
@@ -0,0 +1,115 @@
+package config
+
+import (
+	"os"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type Config struct {
+	Environment         string
+	Version             string
+	HTTPAddr            string
+	StoreDriver         string
+	DatabaseURL         string
+	APIKeys             []string
+	SeedDemoData        bool
+	ContentWeight       float64
+	CollaborativeWeight float64
+	PopularityWeight    float64
+	ExplorationWeight   float64
+	DiversityLambda     float64
+	SpotifyClientID     string
+	SpotifyClientSecret string
+	SpotifyBearerToken  string
+	SpotifyMarket       string
+	UnlockerURL         string
+	MusicBrainzAppName  string
+	MusicBrainzContact  string
+	ProviderCacheTTL    time.Duration
+}
+
+func Load() Config {
+	return Config{
+		Environment:         env("APP_ENV", "development"),
+		Version:             env("APP_VERSION", "0.1.0"),
+		HTTPAddr:            env("HTTP_ADDR", ":8080"),
+		StoreDriver:         env("STORE_DRIVER", "postgres"),
+		DatabaseURL:         env("DATABASE_URL", "postgres://spotify:spotify@localhost:5432/spotifyrec?sslmode=disable"),
+		APIKeys:             csv(env("API_KEYS", "")),
+		SeedDemoData:        boolEnv("SEED_DEMO_DATA", false),
+		ContentWeight:       floatEnv("REC_CONTENT_WEIGHT", 0.44),
+		CollaborativeWeight: floatEnv("REC_COLLAB_WEIGHT", 0.28),
+		PopularityWeight:    floatEnv("REC_POPULARITY_WEIGHT", 0.08),
+		ExplorationWeight:   floatEnv("REC_EXPLORATION_WEIGHT", 0.20),
+		DiversityLambda:     floatEnv("REC_DIVERSITY_LAMBDA", 0.74),
+		SpotifyClientID:     env("SPOTIFY_CLIENT_ID", ""),
+		SpotifyClientSecret: env("SPOTIFY_CLIENT_SECRET", ""),
+		SpotifyBearerToken:  env("SPOTIFY_BEARER_TOKEN", ""),
+		SpotifyMarket:       env("SPOTIFY_MARKET", "US"),
+		MusicBrainzAppName:  env("MUSICBRAINZ_APP_NAME", "SpotifyRecAlg"),
+		MusicBrainzContact:  env("MUSICBRAINZ_CONTACT", ""),
+		ProviderCacheTTL:    time.Duration(intEnv("PROVIDER_CACHE_TTL_HOURS", 24)) * time.Hour,
+		UnlockerURL:         env("UNLOCKER_URL", "http://localhost:5000"),
+	}
+}
+
+func env(key, fallback string) string {
+	value := strings.TrimSpace(os.Getenv(key))
+	if value == "" {
+		return fallback
+	}
+	return value
+}
+
+func csv(value string) []string {
+	if strings.TrimSpace(value) == "" {
+		return nil
+	}
+	parts := strings.Split(value, ",")
+	out := make([]string, 0, len(parts))
+	for _, part := range parts {
+		part = strings.TrimSpace(part)
+		if part != "" {
+			out = append(out, part)
+		}
+	}
+	return out
+}
+
+func boolEnv(key string, fallback bool) bool {
+	raw := strings.TrimSpace(os.Getenv(key))
+	if raw == "" {
+		return fallback
+	}
+	value, err := strconv.ParseBool(raw)
+	if err != nil {
+		return fallback
+	}
+	return value
+}
+
+func floatEnv(key string, fallback float64) float64 {
+	raw := strings.TrimSpace(os.Getenv(key))
+	if raw == "" {
+		return fallback
+	}
+	value, err := strconv.ParseFloat(raw, 64)
+	if err != nil {
+		return fallback
+	}
+	return value
+}
+
+func intEnv(key string, fallback int) int {
+	raw := strings.TrimSpace(os.Getenv(key))
+	if raw == "" {
+		return fallback
+	}
+	value, err := strconv.Atoi(raw)
+	if err != nil {
+		return fallback
+	}
+	return value
+}