chore: 并入 iotlcm-bot 历史到 bot/（原提交 31dbc1d）

bot/internal/state/state.go

@@ -0,0 +1,64 @@
+package state
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+)
+
+type State struct {
+	RunID  string    `json:"runId"`
+	SentAt time.Time `json:"sentAt"`
+}
+
+type Store struct{ dir string }
+
+func New(dir string) Store { return Store{dir: dir} }
+func (s Store) Prepare() error {
+	dir := filepath.Join(s.dir, "sent")
+	if err := os.MkdirAll(dir, 0o700); err != nil {
+		return fmt.Errorf("create sent marker directory: %w", err)
+	}
+	file, err := os.CreateTemp(dir, ".write-check-*")
+	if err != nil {
+		return fmt.Errorf("check sent marker directory: %w", err)
+	}
+	name := file.Name()
+	if err := file.Close(); err != nil {
+		_ = os.Remove(name)
+		return fmt.Errorf("close sent marker write check: %w", err)
+	}
+	if err := os.Remove(name); err != nil {
+		return fmt.Errorf("remove sent marker write check: %w", err)
+	}
+	return nil
+}
+
+func (s Store) Has(runID string) (bool, error) {
+	_, err := os.Stat(filepath.Join(s.dir, "sent", runID+".json"))
+	if err == nil {
+		return true, nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return false, fmt.Errorf("check sent marker: %w", err)
+}
+func (s Store) Mark(runID string) error {
+	if err := s.Prepare(); err != nil {
+		return err
+	}
+	dir := filepath.Join(s.dir, "sent")
+	body, _ := json.Marshal(State{RunID: runID, SentAt: time.Now()})
+	tmp := filepath.Join(dir, fmt.Sprintf(".%s.tmp", runID))
+	final := filepath.Join(dir, runID+".json")
+	if err := os.WriteFile(tmp, body, 0o600); err != nil {
+		return err
+	}
+	return os.Rename(tmp, final)
+}
+
+// Dir 返回状态目录，供调用方复用（例如告警节流状态落盘）。
+func (s Store) Dir() string { return s.dir }

bot/internal/state/state_test.go

@@ -0,0 +1,31 @@
+package state
+
+import "testing"
+
+func TestPrepareCreatesWritableSentDirectory(t *testing.T) {
+	s := New(t.TempDir())
+	if err := s.Prepare(); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestMarkIsIdempotentForLookup(t *testing.T) {
+	s := New(t.TempDir())
+	sent, err := s.Has("run-1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if sent {
+		t.Fatal("run should not be marked before send")
+	}
+	if err := s.Mark("run-1"); err != nil {
+		t.Fatal(err)
+	}
+	sent, err = s.Has("run-1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !sent {
+		t.Fatal("run should be marked")
+	}
+}