feat: config, OpenAI-compatible streaming provider and safe tools

internal/tools/timetool.go

@@ -0,0 +1,41 @@
+package tools
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"time"
+
+	"github.com/crypto/openclaw/internal/llm"
+)
+
+// TimeNow returns the current time, optionally in an IANA time zone.
+type TimeNow struct{ Now func() time.Time }
+
+func (TimeNow) Spec() llm.ToolSpec {
+	return llm.ToolSpec{
+		Name:        "time_now",
+		Description: "Get the current date and time. Optional IANA time zone, e.g. Europe/Berlin.",
+		Parameters:  obj(map[string]any{"timezone": map[string]any{"type": "string"}}),
+	}
+}
+
+func (t TimeNow) Call(_ context.Context, raw json.RawMessage) (string, error) {
+	var a struct{ Timezone string `json:"timezone"` }
+	if err := json.Unmarshal(raw, &a); err != nil {
+		return "", err
+	}
+	now := time.Now
+	if t.Now != nil {
+		now = t.Now
+	}
+	n := now()
+	if a.Timezone != "" {
+		loc, err := time.LoadLocation(a.Timezone)
+		if err != nil {
+			return "", fmt.Errorf("unknown timezone %q", a.Timezone)
+		}
+		n = n.In(loc)
+	}
+	return n.Format("2006-01-02T15:04:05 MST (Monday)"), nil
+}