using System;

using System.Collections.Generic;

using Cfg.Net;

public class Program

{

    public static void Main()

    {

        // LOAD VALID XML

        var cfg = new Cfg();

        cfg.Load(GetXml());

        Console.WriteLine("There are {0} errors in the XML configuration.",cfg.Errors().Length);

        Console.WriteLine("---");

        // LOAD VALID JSON

        cfg.Load(GetJson());

        Console.WriteLine("There are {0} errors in the JSON configuration.",cfg.Errors().Length);

        Console.WriteLine("---");

        // LOAD SHOWING REQUIRED CONSTRAINT

        cfg.Load(GetXmlWithoutFruit());

        Console.WriteLine("There is {0} error in the fruitless XML configuration.",cfg.Errors().Length);

        foreach(var error in cfg.Errors()){

            Console.WriteLine(error);

        }

        Console.WriteLine("---");

​

        // LOAD SHOWING UNIQUE CONSTRAINT

        cfg.Load(GetXmlWithAnExtraApple());

        Console.WriteLine("There is {0} error in the too many apples XML configuration.",cfg.Errors().Length);

        foreach(var error in cfg.Errors()){

            Console.WriteLine(error);

        }

        Console.WriteLine("---");

        // LOAD SHOWING DOMAIN CONSTRAINT

        cfg.Load(GetXmlWithPinkBanana());

        Console.WriteLine("There is {0} error in the pink banana XML configuration.",cfg.Errors().Length);

        foreach(var error in cfg.Errors()){

            Console.WriteLine(error);

        }

        Console.WriteLine("---");

​

        // LOOP WITHOUT A CARE IN THE WORLD

        cfg.Load(GetXml());

        foreach (var fruit in cfg.Fruit) {

            foreach (var color in fruit.Colors) {

                Console.WriteLine("{0} {1}", color.Name, fruit.Name);

            }

        }

    }

    class Cfg : CfgNode {

        [Cfg]

        public int Id {get; set; }

        [Cfg(required=true)] // THERE MUST BE SOME FRUIT!

        public List<Fruit> Fruit { get; set; }

    }

    class Fruit : CfgNode {

        [Cfg(unique=true)] // THE FRUIT MUST BE UNIQUE!

        public string Name { get; set; }

        [Cfg]

        public List<Color> Colors {get; set;}

    }

    class Color : CfgNode {

        [Cfg(domain="red,yellow,green,blue,purple,orange")]

        public string Name {get; set;}

    }

    private static string GetXml(){

        return @"

            <cfg id='1'>

                <fruit>

                    <add name='apple'>

                        <colors>

                            <add name='red' />

                            <add name='yellow' />

                            <add name='green' />

                        </colors>

                    </add>

                    <add name='banana'>

                        <colors>

                            <add name='yellow' />

                        </colors>

                    </add>

                </fruit>

            </cfg>

            ";

    }

​

    private static string GetXmlWithoutFruit(){

        return "<cfg></cfg>";

    }

​

    private static string GetXmlWithAnExtraApple(){

        return @"

            <cfg id='1'>

                <fruit>

                    <add name='apple'>

                        <colors>

                            <add name='red' />

                            <add name='yellow' />

                            <add name='green' />

                        </colors>

                    </add>

                    <add name='apple'>

                        <colors>

                            <add name='green' />

                        </colors>

                    </add>

                </fruit>

            </cfg>

            ";

    }

    private static string GetXmlWithPinkBanana(){

        return @"

            <cfg id='2'>

                <fruit>

                    <add name='banana'>

                        <colors>

                            <add name='pink' />

                        </colors>

                    </add>

                </fruit>

            </cfg>

            ";

    }

​

    private static string GetJson(){

        return @"

            {

                ""id"": 1,

                ""fruit"": [

                    { 

                        ""name"":""apple"",

                        ""colors"": [

                            {""name"":""red""},

                            {""name"":""yellow""},

                            {""name"":""green""}

                        ]

                    },

                    {

                        ""name"":""banana"",

                        ""colors"": [

                            {""name"":""yellow""}

                        ]

                    }

                ]

            }

        ";

    }

}