package main

import (
	"os"
	"testing"
	"time"

	bolt "go.etcd.io/bbolt"
)

func TestLoadEmptyMoments(t *testing.T) {
	filename := "test.db"
	db, err := bolt.Open(filename, 0666, nil)
	if err != nil {
		t.Fatalf("couldn't open db: %s: %s", filename, err)
	}
	defer func() {
		os.Remove(filename)
	}()

	moments, err := loadMoments(db, "2018-01-01")
	if err != nil {
		t.Errorf("error while loading moments: %s", err)
	}

	if len(moments) != 0 {
		t.Errorf("contains moments, which it should not")
	}
}

func TestSaveMemoLoadMoments(t *testing.T) {
	filename := "test.db"
	db, err := bolt.Open(filename, 0666, nil)
	if err != nil {
		t.Fatalf("couldn't open db: %s: %s", filename, err)
	}
	defer func() {
		os.Remove(filename)
	}()

	now := time.Now()
	memo := "test"
	err = saveMemo(db, now, memo)
	if err != nil {
		t.Errorf("error while saving a memo: %s", err)
	}

	prefix := now.Format("2006-01-02")
	moments, err := loadMoments(db, prefix)
	if err != nil {
		t.Errorf("error while loading moments: %s", err)
	}

	if len(moments) != 1 {
		t.Errorf("does not contain one moment which it should")
	}

	if moments[0].Time.Format(time.RFC3339) != now.Format(time.RFC3339) {
		t.Errorf("%q != %q", moments[0].Time, now)
	}

	if moments[0].Memo != memo {
		t.Errorf("%q != %q", moments[0].Memo, memo)
	}
}