Fix Docspell search pagination

docspell_client_test.go

@@ -0,0 +1,59 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strconv"
+	"testing"
+)
+
+func TestSearchItemsContinuesWhenServerCapsLimit(t *testing.T) {
+	var offsets []int
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/api/v1/sec/item/search" {
+			t.Fatalf("unexpected path: %s", r.URL.Path)
+		}
+		var req struct {
+			Offset int `json:"offset"`
+			Limit  int `json:"limit"`
+		}
+		if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+			t.Fatal(err)
+		}
+		offsets = append(offsets, req.Offset)
+		count := 200
+		if req.Offset >= 400 {
+			count = 0
+		}
+		items := make([]SearchItem, count)
+		for i := range items {
+			items[i] = SearchItem{ID: strconv.Itoa(req.Offset + i)}
+		}
+		_ = json.NewEncoder(w).Encode(map[string]any{
+			"groups": []map[string]any{{"items": items}},
+			"limit":  200,
+			"offset": req.Offset,
+		})
+	}))
+	defer server.Close()
+
+	client := NewDocspellClient(server.URL, "")
+	items, err := client.SearchItems(context.Background(), "*", 1000)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) != 400 {
+		t.Fatalf("expected 400 items, got %d", len(items))
+	}
+	wantOffsets := []int{0, 200, 400}
+	if len(offsets) != len(wantOffsets) {
+		t.Fatalf("expected offsets %v, got %v", wantOffsets, offsets)
+	}
+	for i := range wantOffsets {
+		if offsets[i] != wantOffsets[i] {
+			t.Fatalf("expected offsets %v, got %v", wantOffsets, offsets)
+		}
+	}
+}