Made database cmdline arg optional again, fixed appveyor.yml

appveyor.yml

@@ -7,10 +7,10 @@ branches:
     - go-rewrite
 
 # Source Config
-clone_folder: c:\gopath\src\github.com\boramalper\magnetico
+clone_folder: c:\gopath\src\magnetico
+shallow_clone: true
 
 # Build host
-
 environment:
   GOPATH: c:\gopath
   GOVERSION: 1.9.2
@@ -25,4 +25,10 @@ install:
   - go env
 
 build_script:
-  - go install github.com/magnetico/magneticod
+  - go install magnetico/magneticod
+  - go install magnetico/magneticow
+
+test_script:
+  - go test -cover magnetico/magneticod/...
+  - go test -cover magnetico/magneticow/...
+  - go test -cover magnetico/persistence/...

magneticod/main.go

@@ -17,10 +17,12 @@ import (
 
 	"magnetico/persistence"
 	"runtime/pprof"
+	"github.com/Wessie/appdirs"
+	"path"
 )
 
 type cmdFlags struct {
-	DatabaseURL string `long:"database" description:"URL of the database." required:"yeah"`
+	DatabaseURL string `long:"database" description:"URL of the database."`
 
 	TrawlerMlAddrs    []string `long:"trawler-ml-addr" description:"Address(es) to be used by trawling DHT (Mainline) nodes." default:"0.0.0.0:0"`
 	TrawlerMlInterval uint     `long:"trawler-ml-interval" description:"Trawling interval in integer deciseconds (one tenth of a second)."`
@@ -142,7 +144,10 @@ func parseFlags() (*opFlags, error) {
 	}
 
 	if cmdF.DatabaseURL == "" {
-		zap.S().Fatal("database")
+		opF.DatabaseURL = "sqlite3://" + path.Join(
+				appdirs.UserDataDir("magneticod", "", "", false),
+				"database.sqlite3",
+			)
 	} else {
 		opF.DatabaseURL = cmdF.DatabaseURL
 	}