feat: implement server init

TODO.md

@@ -12,7 +12,7 @@
       - [ ] `capsul`
       - [ ] `hetzner`
     - [x] `rm`
-    - [ ] `init`
+    - [x] `init`
   - [ ] `abra app`
     - [x] `ls`
     - [x] `new`

cli/server.go

@@ -1,10 +1,14 @@
 package cli
 
 import (
+	"context"
 	"fmt"
+	"net"
 
 	"coopcloud.tech/abra/client"
 	"coopcloud.tech/abra/config"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/swarm"
 	"github.com/sirupsen/logrus"
 	"github.com/urfave/cli/v2"
 )
@@ -111,6 +115,41 @@ the default IPv4 address as the advertising address. This can be re-configured
 later for more advanced use cases.
 `,
 	Action: func(c *cli.Context) error {
+		host := c.Args().First()
+		if host == "" {
+			cli.ShowSubcommandHelp(c)
+			return nil
+		}
+
+		cl, err := client.NewClientWithContext(host)
+		if err != nil {
+			return err
+		}
+
+		var ipv4 net.IP
+		ips, _ := net.LookupIP(host)
+		for _, ip := range ips {
+			ipv4 = ip.To4()
+		}
+
+		if string(ipv4) == "" {
+			return fmt.Errorf("Unable to retrieve ipv4 address for %s", host)
+		}
+
+		ctx := context.Background()
+		initReq := swarm.InitRequest{
+			ListenAddr:    "0.0.0.0:2377",
+			AdvertiseAddr: string(ipv4),
+		}
+		if _, err := cl.SwarmInit(ctx, initReq); err != nil {
+			return err
+		}
+
+		netOpts := types.NetworkCreate{Driver: "overlay", Scope: "swarm"}
+		if _, err := cl.NetworkCreate(ctx, "proxy", netOpts); err != nil {
+			return err
+		}
+
 		return nil
 	},
 }