Add basic proxy scripting support.

goolinux.json

@@ -25,7 +25,7 @@
 		"volumes":	[
 			"/data/docker/navidrome:/data",
 			"/data/music:/music:ro"
-		]
+		],
 	},
 	"forgejo": {
 		"enable":	"true",

main.go

@@ -5,6 +5,7 @@ import (
 	"os"
 	"os/exec"
 	"path"
+	"strconv"
 	"strings"
 	"text/template"
 
@@ -25,6 +26,7 @@ type SystemConfig struct {
 }
 
 type NetworkingConfig struct {
+	proxy		map[int]string
 }
 
 type ServiceConfig struct {
@@ -36,6 +38,7 @@ type ServiceConfig struct {
 	Src		string
 	Ports		[]string
 	Volumes		[]string
+	Proxy		string
 
 	Provider	string
 	Packages	[]string
@@ -84,10 +87,15 @@ func main() {
 		mergo.Merge(&config, systemConfig, mergo.WithOverride)
 	}
 
-	// Parse services
+	// Initialize any needed maps in the config
+	config.Networking.proxy = make(map[int]string)
+
+	// Parse user services
 	for name, service := range config.Services {
 		var b strings.Builder
-		var s ServiceConfig
+		s := ServiceConfig{
+			Config: make(map[string]interface{}),
+		}
 
 		// If no provider specified, try system
 		if service.Provider == "" { service.Provider = "system" }
@@ -101,11 +109,14 @@ func main() {
 				// No system config to merge
 				// Rely solely on the user config
 				fmt.Println("  Warning: No system config for service: " + name)
+				continue
 			default:
 				fmt.Println("Error reading service config: ", err)
 				return
 			}
-		} else {
+		}
+
+		{
 			// Parse service config
 			err = hjson.Unmarshal(c, &s)
 			if err != nil {
@@ -114,13 +125,62 @@ func main() {
 				return
 			}
 			mergo.Merge(&s, service, mergo.WithOverride)
+
+/*
+			// Initialize the config map if it wasn't already
+			if s.Config == map[string]interface{} {
+				s.Config = make(map[string]interface{})
+			}
+*/
+
 			config.Services[name] = s
 
 			// Add service packages to the global list
 			config.System.Packages = append(config.System.Packages, s.Packages...)
+
+			// If a proxy definition exists, append it
+			if s.Proxy != "" {
+				ports := strings.Split(s.Ports[0], ":")
+				if len(ports) == 0 {
+					fmt.Println("Error: No port defined for proxy to", s.Proxy)
+					return
+				}
+				port, err := strconv.Atoi(ports[0])
+				if err != nil {
+					fmt.Println(err)
+					fmt.Printf("Error: proxy for %s has an invalid port definition: %s\n", s.Proxy, ports)
+					return
 				}
 
-		// Generate service config files
+				conflict, exists := config.Networking.proxy[port]
+				if exists == true {
+					fmt.Println("Error: Conflicting proxy settings:")
+					fmt.Printf(" %s:%s\n", conflict, port)
+					fmt.Printf(" %s:%s\n", s.Proxy, port)
+				}
+
+				config.Networking.proxy[port] = s.Proxy
+			}
+		}
+	}
+
+	// Handle any special case (scripted) configs
+	{
+		// Expand Networking.proxy to Services.proxy.Config.scripted_proxy
+		type proxy struct {
+			Domain	string
+			Port	int
+		}
+		var p []proxy
+		for port, domain := range config.Networking.proxy {
+			p = append(p, proxy{Domain: domain, Port: port})
+		}
+
+		config.Services["proxy"].Config["scripted_proxy"] = p
+	}
+
+	// Generate service config templates
+	for name, s := range config.Services {
 		for _, f := range s.ConfigFiles {
 			var b strings.Builder
 			f := strings.Split(f, ":")

services/proxy/caddy.template

@@ -4,7 +4,14 @@
 
 # https://caddyserver.com/docs/caddyfile/patterns
 {{range .Config.proxy}}
-{{.domain}} {
-	reverse_proxy localhost:{{.port}}
+{{.Domain}} {
+	reverse_proxy localhost:{{.Port}}
+}
+{{end}}
+
+# Proxied services
+{{range .Config.scripted_proxy}}
+{{.Domain}} {
+	reverse_proxy localhost:{{.Port}}
 }
 {{end}}