using System;
using System.Collections.Generic;
using System.Linq;

using DuplicateFinder.Core.Commands;

using Machine.Specifications;

namespace DuplicateFinder.Core.Integration.Tests {

	public class FindingDuplicates {

	    It can_find_files_with_the_same_size =()=> {
		RunCommand(@"--size --whatif Samples\First Samples\Second");
		AllDuplicates.ShouldContainOnly(@"Samples\First\content-full-first.txt",
						@"Samples\Second\content-full-second.txt",
						@"Samples\First\size-first.txt",
						@"Samples\Second\size-second.txt");
	    };

	    It can_find_files_with_the_same_name =()=> {
		RunCommand(@"--name --whatif Samples\First Samples\Second");
		AllDuplicates.ShouldContainOnly(@"Samples\First\name.txt", @"Samples\Second\name.txt");
	    };

	    It can_find_files_with_the_same_contents =()=> {
		RunCommand(@"--content --whatif Samples\First Samples\Second");
		AllDuplicates.ShouldContainOnly(@"Samples\First\content-full-first.txt", @"Samples\Second\content-full-second.txt");
	    };

	    It can_find_files_with_the_same_head_content =()=> {
		RunCommand(@"--content --first 5 --whatif Samples\First Samples\Second");
		AllDuplicates.ShouldContainOnly(@"Samples\First\content-full-first.txt",
						@"Samples\Second\content-full-second.txt",
						@"Samples\First\content-head-first.txt",
						@"Samples\Second\content-head-second.txt");
	    };

	    It can_find_files_with_the_same_tail_content =()=> {
		RunCommand(@"--content --last 5 --whatif Samples\First Samples\Second");
		AllDuplicates.ShouldContainOnly(@"Samples\First\content-full-first.txt",
						@"Samples\Second\content-full-second.txt",
						@"Samples\First\content-tail-first.txt",
						@"Samples\Second\content-tail-second.txt");
	    };

	    It can_find_files_with_the_same_head_and_tail_content =()=> {
		RunCommand(@"--content --first 5 --last 5 --whatif Samples\First Samples\Second");
		AllDuplicates.ShouldContainOnly(@"Samples\First\content-full-first.txt", @"Samples\Second\content-full-second.txt");
	    }

	    // Helpers
	    static ICommand Command;
	    static ICommand RunCommand(string command) {
		var args = command.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
		Command  = new CommandLineParser().Parse(args);
		Command.Execute();
		return Command;
	    }
	    static IEnumerable<string> AllDuplicates {
		get { return (Command as FindDuplicatesCommand).Duplicates.SelectMany(x => x); }
	    }
	}
}