fix: pkg

internal/csync/slices.go

@@ -0,0 +1,34 @@
+package csync
+
+import (
+	"iter"
+	"sync"
+)
+
+type LazySlice[K any] struct {
+	inner []K
+	mu    sync.Mutex
+}
+
+func NewLazySlice[K any](load func() []K) *LazySlice[K] {
+	s := &LazySlice[K]{}
+	s.mu.Lock()
+	go func() {
+		s.inner = load()
+		s.mu.Unlock()
+	}()
+	return s
+}
+
+func (s *LazySlice[K]) Iter() iter.Seq[K] {
+	s.mu.Lock()
+	inner := s.inner
+	s.mu.Unlock()
+	return func(yield func(K) bool) {
+		for _, v := range inner {
+			if !yield(v) {
+				return
+			}
+		}
+	}
+}

internal/csync/slices_test.go

@@ -0,0 +1,86 @@
+package csync
+
+import (
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestLazySlice_Iter(t *testing.T) {
+	t.Parallel()
+
+	data := []string{"a", "b", "c"}
+	s := NewLazySlice(func() []string {
+		// TODO: use synctest when new Go is out.
+		time.Sleep(10 * time.Millisecond) // Small delay to ensure loading happens
+		return data
+	})
+
+	var result []string
+	for v := range s.Iter() {
+		result = append(result, v)
+	}
+
+	assert.Equal(t, data, result)
+}
+
+func TestLazySlice_IterWaitsForLoading(t *testing.T) {
+	t.Parallel()
+
+	var loaded atomic.Bool
+	data := []string{"x", "y", "z"}
+
+	s := NewLazySlice(func() []string {
+		// TODO: use synctest when new Go is out.
+		time.Sleep(100 * time.Millisecond)
+		loaded.Store(true)
+		return data
+	})
+
+	assert.False(t, loaded.Load(), "should not be loaded immediately")
+
+	var result []string
+	for v := range s.Iter() {
+		result = append(result, v)
+	}
+
+	assert.True(t, loaded.Load(), "should be loaded after Iter")
+	assert.Equal(t, data, result)
+}
+
+func TestLazySlice_EmptySlice(t *testing.T) {
+	t.Parallel()
+
+	s := NewLazySlice(func() []string {
+		return []string{}
+	})
+
+	var result []string
+	for v := range s.Iter() {
+		result = append(result, v)
+	}
+
+	assert.Empty(t, result)
+}
+
+func TestLazySlice_EarlyBreak(t *testing.T) {
+	t.Parallel()
+
+	data := []string{"a", "b", "c", "d", "e"}
+	s := NewLazySlice(func() []string {
+		time.Sleep(10 * time.Millisecond) // Small delay to ensure loading happens
+		return data
+	})
+
+	var result []string
+	for v := range s.Iter() {
+		result = append(result, v)
+		if len(result) == 2 {
+			break
+		}
+	}
+
+	assert.Equal(t, []string{"a", "b"}, result)
+}

internal/llm/agent/agent.go

@@ -10,8 +10,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/charmbracelet/crush/csync"
 	"github.com/charmbracelet/crush/internal/config"
+	"github.com/charmbracelet/crush/internal/csync"
 	fur "github.com/charmbracelet/crush/internal/fur/provider"
 	"github.com/charmbracelet/crush/internal/history"
 	"github.com/charmbracelet/crush/internal/llm/prompt"