Füge Modelle für Flows, FlowRuns, TaskRuns, WorkPools, WorkQueues, Deployments, Variablen, FlowRunStates, Logs, und Blocks samt zugehöriger Unmarshal-Logik und Zeitfeld-Unterstützung hinzu; ergänze Tests für die FlowRunStates-Service-Methoden.

pkg/models/flows.go

@@ -0,0 +1,57 @@
+package models
+
+import (
+	"encoding/json"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+// Flow represents a Prefect flow.
+type Flow struct {
+	ID      uuid.UUID              `json:"id"`
+	Created *time.Time             `json:"created"`
+	Updated *time.Time             `json:"updated"`
+	Name    string                 `json:"name"`
+	Tags    []string               `json:"tags,omitempty"`
+	Labels  map[string]interface{} `json:"labels,omitempty"`
+}
+
+// FlowCreate represents the request to create a flow.
+type FlowCreate struct {
+	Name   string                 `json:"name"`
+	Tags   []string               `json:"tags,omitempty"`
+	Labels map[string]interface{} `json:"labels,omitempty"`
+}
+
+// FlowUpdate represents the request to update a flow.
+type FlowUpdate struct {
+	Tags   *[]string               `json:"tags,omitempty"`
+	Labels *map[string]interface{} `json:"labels,omitempty"`
+}
+
+// FlowFilter represents filter criteria for querying flows.
+type FlowFilter struct {
+	Name   *string  `json:"name,omitempty"`
+	Tags   []string `json:"tags,omitempty"`
+	Offset int      `json:"offset,omitempty"`
+	Limit  int      `json:"limit,omitempty"`
+}
+
+// UnmarshalJSON implements custom JSON unmarshaling for time fields.
+func (f *Flow) UnmarshalJSON(data []byte) error {
+	type Alias Flow
+	aux := &struct {
+		Created optTime `json:"created"`
+		Updated optTime `json:"updated"`
+		*Alias
+	}{
+		Alias: (*Alias)(f),
+	}
+	if err := json.Unmarshal(data, aux); err != nil {
+		return err
+	}
+	f.Created = aux.Created.V
+	f.Updated = aux.Updated.V
+	return nil
+}