package api

import (
	"reflect"
	"sort"
	"testing"

	"git.golem15.com/golem15/sm-journal-plugin/models"
)

func sortedCategoryKeys(row map[string]any) []string {
	keys := make([]string, 0, len(row))
	for k := range row {
		keys = append(keys, k)
	}
	sort.Strings(keys)
	return keys
}

func TestSerializeCategoryNodeContent(t *testing.T) {
	html := "<h2>Acme</h2>\n<p>Pillar copy</p>\n"
	var parentID uint = 1
	root := models.Category{ID: 1, Name: "News", Slug: "news", Content: &html}
	child := models.Category{ID: 2, Name: "Quiet", Slug: "quiet", ParentID: &parentID}
	byParent := map[uint][]models.Category{1: {child}}
	counts := map[uint]int64{1: 2}

	row := serializeCategoryNode(&root, byParent, counts, true)
	if row == nil {
		t.Fatal("root row is nil")
	}
	if got, ok := row["content"].(string); !ok || got != html {
		t.Fatalf("root content = %#v, want %q", row["content"], html)
	}
	wantRoot := []string{"children", "content", "description", "id", "name", "nest_depth", "parent_id", "post_count", "slug"}
	if got := sortedCategoryKeys(row); !reflect.DeepEqual(got, wantRoot) {
		t.Fatalf("root keys = %v, want %v", got, wantRoot)
	}
	kids, ok := row["children"].([]map[string]any)
	if !ok || len(kids) != 1 {
		t.Fatalf("children = %#v, want one row", row["children"])
	}
	v, present := kids[0]["content"]
	if !present || v != nil {
		t.Fatalf("child content = %#v (present %v), want nil", v, present)
	}
	wantChild := []string{"content", "description", "id", "name", "nest_depth", "parent_id", "post_count", "slug"}
	if got := sortedCategoryKeys(kids[0]); !reflect.DeepEqual(got, wantChild) {
		t.Fatalf("child keys = %v, want %v", got, wantChild)
	}

	listed := serializeCategoryNode(&root, byParent, counts, false)
	if listed == nil {
		t.Fatal("root omitted without include_empty")
	}
	if _, has := listed["children"]; has {
		t.Fatalf("empty child listed without include_empty: %#v", listed["children"])
	}
	if got, ok := listed["content"].(string); !ok || got != html {
		t.Fatalf("root content without include_empty = %#v, want %q", listed["content"], html)
	}
}