From 47edce1eaed6544d0d985d0cb74642fc6d8b2aa5 Mon Sep 17 00:00:00 2001
From: Wikid82 <jhatfield82@gmail.com>
Date: Wed, 19 Nov 2025 21:36:26 -0500
Subject: [PATCH] feat: Add configuration management with environment variable
 support

---
 backend/internal/config/config.go | 59 +++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 backend/internal/config/config.go

diff --git a/backend/internal/config/config.go b/backend/internal/config/config.go
new file mode 100644
index 00000000..74f5a633
--- /dev/null
+++ b/backend/internal/config/config.go
@@ -0,0 +1,59 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+// Config captures runtime configuration sourced from environment variables.
+type Config struct {
+	Environment     string
+	HTTPPort        string
+	DatabasePath    string
+	FrontendDir     string
+	CaddyAdminAPI   string
+	CaddyConfigDir  string
+	CaddyBinary     string
+	ImportCaddyfile string
+	ImportDir       string
+	JWTSecret       string
+}
+
+// Load reads env vars and falls back to defaults so the server can boot with zero configuration.
+func Load() (Config, error) {
+	cfg := Config{
+		Environment:     getEnv("CPM_ENV", "development"),
+		HTTPPort:        getEnv("CPM_HTTP_PORT", "8080"),
+		DatabasePath:    getEnv("CPM_DB_PATH", filepath.Join("data", "cpm.db")),
+		FrontendDir:     getEnv("CPM_FRONTEND_DIR", filepath.Clean(filepath.Join("..", "frontend", "dist"))),
+		CaddyAdminAPI:   getEnv("CPM_CADDY_ADMIN_API", "http://localhost:2019"),
+		CaddyConfigDir:  getEnv("CPM_CADDY_CONFIG_DIR", filepath.Join("data", "caddy")),
+		CaddyBinary:     getEnv("CPM_CADDY_BINARY", "caddy"),
+		ImportCaddyfile: getEnv("CPM_IMPORT_CADDYFILE", "/import/Caddyfile"),
+		ImportDir:       getEnv("CPM_IMPORT_DIR", filepath.Join("data", "imports")),
+		JWTSecret:       getEnv("CPM_JWT_SECRET", "change-me-in-production"),
+	}
+
+	if err := os.MkdirAll(filepath.Dir(cfg.DatabasePath), 0o755); err != nil {
+		return Config{}, fmt.Errorf("ensure data directory: %w", err)
+	}
+
+	if err := os.MkdirAll(cfg.CaddyConfigDir, 0o755); err != nil {
+		return Config{}, fmt.Errorf("ensure caddy config directory: %w", err)
+	}
+
+	if err := os.MkdirAll(cfg.ImportDir, 0o755); err != nil {
+		return Config{}, fmt.Errorf("ensure import directory: %w", err)
+	}
+
+	return cfg, nil
+}
+
+func getEnv(key, fallback string) string {
+	if val := os.Getenv(key); val != "" {
+		return val
+	}
+
+	return fallback
+}