package main

import (
	"encoding/json"
	"fmt"
	"path"
	"strconv"
	"testing"
)

func TestTreeForEach(t *testing.T) {
	tree := NewTree(t.TempDir())
	id := ""
	for i := 0; i < 5; i++ {
		id = path.Join(id, strconv.Itoa(i))
		if err := tree.Put(NewID(id), Leaf{Title: id, Content: id}); err != nil {
			t.Fatal(err)
		}
	}
	branch, err := tree.GetRoot()
	if err != nil {
		t.Fatal(err)
	}
	if err := branch.ForEach(func(id ID, leaf Leaf) error {
		t.Logf("id=%+v, leaf=%+v", id, leaf)
		return nil
	}); err != nil {
		t.Fatal(err)
	}
}

func TestTreeDel(t *testing.T) {
	tree := NewTree(t.TempDir())
	if err := tree.Put(NewID("id"), Leaf{}); err != nil {
		t.Fatal(err)
	}
	if err := tree.Put(NewID("id/subid"), Leaf{}); err != nil {
		t.Fatal(err)
	}

	if err := tree.Del(NewID("id")); err != nil {
		t.Fatal(err)
	} else if got, err := tree.Get(NewID("id")); err != nil {
		t.Fatal(err)
	} else if !got.Deleted {
		t.Fatal(got)
	}

	if root, err := tree.GetRoot(); err != nil {
		t.Fatal(err)
	} else if len(root.Branches) != 0 {
		t.Fatal(root.Branches)
	}

	if root, err := tree.getRoot(NewID(""), false, true); err != nil {
		t.Fatal(err)
	} else if len(root.Branches) != 1 {
		t.Fatal(root.Branches)
	}
}

func TestTreeCrud(t *testing.T) {
	tree := NewTree(t.TempDir())

	if m, err := tree.GetRoot(); err != nil {
		t.Fatal(err)
	} else if m.Branches == nil {
		t.Fatal(m)
	}

	if err := tree.Del(NewID("id")); err != nil {
		t.Fatal(err)
	}

	want := Leaf{
		Title:   "leaf title",
		Deleted: false,
		Content: "leaf content",
	}
	if err := tree.Put(NewID("id"), want); err != nil {
		t.Fatal(err)
	} else if l, err := tree.Get(NewID("id")); err != nil {
		t.Fatal(err)
	} 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)
	}
}