get without content

spike/review/reinvent/ezmded/server/tree.go

@@ -17,6 +17,18 @@ func (branch Branch) IsZero() bool {
 	return branch.Leaf == (Leaf{}) && len(branch.Branches) == 0
 }
 
+func (branch Branch) Find(baseId string) ([]string, bool) {
+	if _, ok := branch.Branches[baseId]; ok {
+		return []string{baseId}, true
+	}
+	for pid, child := range branch.Branches {
+		if subids, ok := child.Find(baseId); ok {
+			return append([]string{pid}, subids...), true
+		}
+	}
+	return nil, false
+}
+
 type Leaf struct {
 	Title   string
 	Deleted bool
@@ -46,18 +58,30 @@ func (tree Tree) WithRoot(root string) Tree {
 	return tree
 }
 
+func (tree Tree) Find(baseId string) ([]string, bool) {
+	root, err := tree.GetRoot()
+	if err != nil {
+		return nil, false
+	}
+	return root.Find(baseId)
+}
+
+func (tree Tree) GetRootMeta() (Branch, error) {
+	return tree.getRoot(false)
+}
+
 func (tree Tree) GetRoot() (Branch, error) {
 	if !tree.cachedRoot.IsZero() {
 		return tree.cachedRoot, nil
 	}
-	got, err := tree.getRoot()
+	got, err := tree.getRoot(true)
 	if err == nil {
 		tree.cachedRoot = got
 	}
 	return got, err
 }
 
-func (tree Tree) getRoot() (Branch, error) {
+func (tree Tree) getRoot(withContent bool) (Branch, error) {
 	m := Branch{Branches: map[string]Branch{}}
 	entries, err := os.ReadDir(tree.root)
 	if os.IsNotExist(err) {
@@ -73,8 +97,11 @@ func (tree Tree) getRoot() (Branch, error) {
 			} else if err := yaml.Unmarshal(b, &m.Leaf); err != nil {
 				return Branch{}, err
 			}
+			if !withContent {
+				m.Leaf.Content = ""
+			}
 		} else if entry.IsDir() {
-			if branch, err := tree.WithRoot(path.Join(tree.root, entry.Name())).getRoot(); err != nil {
+			if branch, err := tree.WithRoot(path.Join(tree.root, entry.Name())).getRoot(withContent); err != nil {
 				return Branch{}, err
 			} else {
 				m.Branches[entry.Name()] = branch
@@ -110,11 +137,16 @@ func (tree Tree) Put(id []string, input Leaf) error {
 	if err != nil {
 		return err
 	}
-	return ensureAndWrite(tree.toData(id), b)
+	if err := ensureAndWrite(tree.toData(id), b); err != nil {
+		return err
+	}
+	tree.cachedRoot = Branch{}
+	return nil
 }
 
 func (tree Tree) Del(id []string) error {
 	os.RemoveAll(tree.toDir(id))
+	tree.cachedRoot = Branch{}
 	return nil
 }
 

spike/review/reinvent/ezmded/server/tree_test.go

@@ -1,6 +1,11 @@
 package main
 
-import "testing"
+import (
+	"encoding/json"
+	"fmt"
+	"path"
+	"testing"
+)
 
 func TestTreeCrud(t *testing.T) {
 	tree := NewTree(t.TempDir())
@@ -27,4 +32,73 @@ func TestTreeCrud(t *testing.T) {
 	} else if l != want {
 		t.Fatal(want, l)
 	}
+
+	if withContent, err := tree.GetRoot(); err != nil {
+		t.Fatal(err)
+	} else if withoutContent, err := tree.GetRootMeta(); err != nil {
+		t.Fatal(err)
+	} else if fmt.Sprint(withContent) == fmt.Sprint(withoutContent) {
+		with, _ := json.MarshalIndent(withContent, "", "   ")
+		without, _ := json.MarshalIndent(withoutContent, "", "   ")
+		t.Fatalf("without content == with content: \n\twith=%s\n\twout=%s", with, without)
+	}
+}
+
+func TestBranchFind(t *testing.T) {
+	cases := map[string]struct {
+		input  string
+		want   []string
+		found  bool
+		branch Branch
+	}{
+		"empty": {
+			input:  "id",
+			want:   nil,
+			found:  false,
+			branch: Branch{},
+		},
+		"yes top level": {
+			input: "id",
+			want:  []string{"id"},
+			found: true,
+			branch: Branch{
+				Branches: map[string]Branch{"id": Branch{}},
+			},
+		},
+		"yes deep level": {
+			input: "subsubid",
+			want:  []string{"id", "subid", "subsubid"},
+			found: true,
+			branch: Branch{
+				Branches: map[string]Branch{"id": Branch{
+					Branches: map[string]Branch{"subid": Branch{
+						Branches: map[string]Branch{"subsubid": Branch{}}}},
+				}},
+			},
+		},
+		"no but has deep levels": {
+			input: "notsubsubid",
+			want:  nil,
+			found: false,
+			branch: Branch{
+				Branches: map[string]Branch{"id": Branch{
+					Branches: map[string]Branch{"subid": Branch{
+						Branches: map[string]Branch{"subsubid": Branch{}}}},
+				}},
+			},
+		},
+	}
+
+	for name, d := range cases {
+		c := d
+		t.Run(name, func(t *testing.T) {
+			got, found := c.branch.Find(c.input)
+			if found != c.found {
+				t.Error(c.found, found)
+			}
+			if path.Join(got...) != path.Join(c.want...) {
+				t.Error(c.want, got)
+			}
+		})
+	}
 }