using System;
using System.Collections.Generic;
using System.Text;
using NUnit.Framework;
using TaskExplorer.Data;
using System.Xml;

namespace TaskExplorer.Tests
{
    [TestFixture]
    public class TestSaveLoad
    {
        [Test]
        public void Test1()
        {
            Store store = new Store();
            Task task1 = store.CreateTask("Move the boxes");
            Task task2 = store.CreateTask("Hoover");
            task2.AddPreRequisite(task1);

            Goal goal = store.CreateGoal("Complete something");
            goal.RequireTask(task2);

            task1.IsComplete = true;

            string savedFile;
            {
                StringBuilder stringOut = new StringBuilder();
                XmlWriterSettings setts = new XmlWriterSettings();
                setts.Indent = true;
                using (XmlWriter writer = XmlWriter.Create(stringOut, setts))
                {
                    store.SaveTo(writer);
                }
                savedFile = stringOut.ToString();
            }
            Console.WriteLine("{0}", savedFile);
            StringAssert.Contains(task1.Name, savedFile);
            StringAssert.Contains(task2.Name, savedFile);
            StringAssert.Contains(goal.Name, savedFile);

            Store loaded = new Store();
            {
                XmlDocument doc = new XmlDocument();
                doc.LoadXml(savedFile);
                loaded.LoadFrom(doc);
            }
            List<Task> tasks = new List<Task>(loaded.Tasks);
            Assert.AreEqual(2, tasks.Count);
            Assert.AreEqual(task1.Name, tasks[0].Name);
            Assert.AreEqual(task2.Name, tasks[1].Name);

            Assert.IsTrue(tasks[0].IsComplete);
            Assert.IsFalse(tasks[1].IsComplete);

            List<Task> task1prereq = new List<Task>(tasks[0].PreRequisites);
            Assert.AreEqual(0, task1prereq.Count);
            List<Task> task2prereq = new List<Task>(tasks[1].PreRequisites);
            Assert.AreEqual(1, task2prereq.Count);
            Assert.AreEqual(task1.Name, task2prereq[0].Name);

            List<Goal> goals = new List<Goal>(loaded.Goals);
            Assert.AreEqual(1, goals.Count);
            Assert.AreEqual(goal.Name, goals[0].Name);
            List<Task> goalreqs = new List<Task>(goals[0].RequiredTasks);
            Assert.AreEqual(1, goalreqs.Count);
            Assert.AreEqual(task2.Name, goalreqs[0].Name);
        }
    }
}