core: Prototype config parser

core/config.go

@@ -1,12 +1,48 @@
 package core
 
 import (
-	"errors"
+	"encoding/json"
+	"io/ioutil"
+	"log"
+	"path/filepath"
 )
 
 type Config struct {
 }
 
-func LoadConfig(configPath string) (*Config, error) {
-	return nil, errors.New("Not implemented")
+type ConfigRoot struct {
+	Contacts map[string]ConfigContact
+	Identity ConfigIdentity
+}
+
+type ConfigContact struct {
+	Hostname      string
+	LastConnected string
+	Nickname      string
+	WhenCreated   string
+}
+
+type ConfigIdentity struct {
+	DataDirectory     string
+	HostnameBlacklist []string
+	ServiceKey        string
+}
+
+func LoadConfig(configPath string) (*Config, error) {
+	configFile := filepath.Join(configPath, "ricochet.json")
+	configData, err := ioutil.ReadFile(configFile)
+	if err != nil {
+		log.Printf("Config read error from %s: %v", configFile, err)
+		return nil, err
+	}
+
+	var root ConfigRoot
+	if err := json.Unmarshal(configData, &root); err != nil {
+		log.Printf("Config parse error: %v", err)
+		return nil, err
+	}
+
+	log.Printf("Config: %v", root)
+
+	return &Config{}, nil
 }