feat: initial commit

reach/client/protocol/v2/protocol.go

@@ -0,0 +1,54 @@
+package v2
+
+import (
+	"context"
+
+	"forge.cadoles.com/cadoles/go-emlid/reach/client/protocol"
+	"github.com/Masterminds/semver/v3"
+	"github.com/pkg/errors"
+)
+
+const Identifier protocol.Identifier = "v2"
+
+const compatibleVersionConstraint = ">= 32"
+
+type Protocol struct {
+}
+
+// Available implements protocol.Protocol.
+func (p *Protocol) Available(ctx context.Context, addr string) (bool, error) {
+	ops := p.Operations(addr).(*Operations)
+
+	info, err := ops.GetInfo(ctx)
+	if err != nil {
+		return false, errors.WithStack(err)
+	}
+
+	versionConstraint, err := semver.NewConstraint(compatibleVersionConstraint)
+	if err != nil {
+		return false, errors.WithStack(err)
+	}
+
+	version, err := semver.NewVersion(info.Reachview.Version)
+	if err != nil {
+		return false, errors.WithStack(err)
+	}
+
+	if !versionConstraint.Check(version) {
+		return false, errors.Errorf("reachview version '%s' does not match constraint '%s'", info.Reachview.Version, compatibleVersionConstraint)
+	}
+
+	return true, nil
+}
+
+// Identifier implements protocol.Protocol.
+func (p *Protocol) Identifier() protocol.Identifier {
+	return Identifier
+}
+
+// Operations implements protocol.Protocol.
+func (p *Protocol) Operations(addr string) protocol.Operations {
+	return &Operations{addr: addr}
+}
+
+var _ protocol.Protocol = &Protocol{}