added git ssh support and ablity to download repo via zip, tar.gz, and bundle

internal/api/handlers/instance.go

@@ -0,0 +1,45 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/url"
+
+	"github.com/forgeo/forgebucket/internal/config"
+)
+
+type InstanceHandler struct {
+	cfg *config.Config
+}
+
+func NewInstanceHandler(cfg *config.Config) *InstanceHandler {
+	return &InstanceHandler{cfg: cfg}
+}
+
+// Get returns the public instance configuration needed by the frontend to
+// construct clone URLs (SSH host, SSH port, instance name).
+func (h *InstanceHandler) Get(w http.ResponseWriter, r *http.Request) {
+	sshHost := h.sshHost(r)
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(map[string]string{ //nolint:errcheck
+		"sshHost":      sshHost,
+		"sshPort":      h.cfg.SSHPort,
+		"instanceName": h.cfg.InstanceName,
+	})
+}
+
+// sshHost extracts the hostname from InstanceURL. Falls back to the request
+// host when InstanceURL is unset (common in local development).
+func (h *InstanceHandler) sshHost(r *http.Request) string {
+	if h.cfg.InstanceURL != "" {
+		if u, err := url.Parse(h.cfg.InstanceURL); err == nil && u.Hostname() != "" {
+			return u.Hostname()
+		}
+	}
+	// Strip port from Host header if present.
+	host := r.Host
+	if u, err := url.Parse("http://" + host); err == nil {
+		return u.Hostname()
+	}
+	return host
+}