sync

cmd/cli/commands/sync/sync.go

@@ -1,12 +1,16 @@
 package sync
 
 import (
+	"cloudsave/pkg/game"
 	"cloudsave/pkg/remote"
+	"cloudsave/pkg/remote/client"
+	"cloudsave/pkg/tools/prompt/credentials"
 	"context"
-	"crypto/md5"
 	"flag"
 	"fmt"
-	"io"
+	"log/slog"
+	"net/http"
+	"net/url"
 	"os"
 
 	"github.com/google/subcommands"
@@ -29,37 +33,99 @@ func (p *SyncCmd) SetFlags(f *flag.FlagSet) {
 }
 
 func (p *SyncCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
-	_, err := remote.All()
+	remotes, err := remote.All()
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "error: failed to load datastore:", err)
 		return subcommands.ExitFailure
 	}
 
-	for _, remote := range remotes {
-		
+	username, password, err := credentials.Read()
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error: failed to read std output:", err)
+		return subcommands.ExitFailure
+	}
+
+	for _, r := range remotes {
+		if !ping(r.URL, username, password) {
+			slog.Warn("remote is unavailable", "url", r.URL)
+			continue
+		}
+
+		client := client.New(r.URL, username, password)
+
+		hlocal, err := game.Hash(r.GameID)
+		if err != nil {
+			slog.Error(err.Error())
+			continue
+		}
+
+		hremote, _ := client.Hash(r.GameID)
+
+		vlocal, err := game.Version(r.GameID)
+		if err != nil {
+			slog.Error(err.Error())
+			continue
+		}
+
+		vremote, _ := client.Version(r.GameID)
+
+		if hlocal == hremote {
+			fmt.Println("already up-to-date")
+			continue
+		}
+
+		if vremote == 0 {
+			fmt.Println("push")
+			continue
+		}
+
+		if vlocal > vremote {
+			fmt.Println("push")
+			continue
+		}
+
+		if vlocal < vremote {
+			fmt.Println("pull")
+			continue
+		}
+
+		if vlocal == vremote {
+			fmt.Println("conflict")
+			continue
+		}
 	}
 
 	return subcommands.ExitSuccess
 }
 
-func hash(path string) string {
-	f, err := os.OpenFile(path, os.O_RDONLY, 0)
+func ping(remote, username, password string) bool {
+	cli := http.Client{}
+
+	hburl, err := url.JoinPath(remote, "heartbeat")
 	if err != nil {
-		notFound("id not found", w, r)
-		return
-	}
-	defer f.Close()
-
-	// Create MD5 hasher
-	hasher := md5.New()
-
-	// Copy file content into hasher
-	if _, err := io.Copy(hasher, f); err != nil {
-		fmt.Fprintln(os.Stderr, "error: an error occured while reading data:", err)
-		internalServerError(w, r)
-		return
+		fmt.Fprintln(os.Stderr, "cannot connect to remote:", err)
+		return false
 	}
 
-	// Get checksum result
-	sum := hasher.Sum(nil)
+	req, err := http.NewRequest("GET", hburl, nil)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "cannot connect to remote:", err)
+		return false
+	}
+
+	req.SetBasicAuth(username, password)
+
+	res, err := cli.Do(req)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "cannot connect to remote:", err)
+		return false
+	}
+
+	if res.StatusCode != http.StatusOK {
+		fmt.Fprintln(os.Stderr, "cannot connect to remote: server return code", res.StatusCode)
+		return false
+	}
+
+	return true
 }
+