using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Speech;
using System.Speech.Synthesis;
//using System.Speech.Recognition;
using System.Text.RegularExpressions;

namespace Say
{
    class Say
    {
        static void Main(string[] args)
        {
            if (args.Length == 0)
            {
                System.Console.Out.Write(
                    "Please provide text input for the computer to speak.\n"
                    + "Input methods include passing Say.exe a filename,\n"
                    + "or simply calling it like this:\n"
                    + "\tSay.exe speak this text.");
                return;
            }

            SpeechSynthesizer ss = new SpeechSynthesizer();
            int argLen = args.Length;

            // If the last thing looks like a WAV file, set that as the output file
            if(Regex.IsMatch(args[argLen - 1], @"\.wav", RegexOptions.IgnoreCase))
            {
                ss.SetOutputToWaveFile(args[argLen - 1]);  
                --argLen; // decrement argLen so that the filename isn't read aloud
            }

            // If the first thing is a file, read from it.
            if (File.Exists(args[0]))
            {    
                string fileText = File.ReadAllText(args[0], Encoding.Default);
                ss.Speak(fileText);
            }
            else
            {
                StringBuilder sb = new StringBuilder();
                for(int i = 0; i < argLen; ++i) {
                    sb.Append(args[i] + " ");
                }
                string argString = sb.ToString() + ".";
                ss.Speak(argString);
            }
        }
    }
}