using System;
using System.CodeDom.Compiler;
using System.Collections;
using System.IO;
using System.Reflection;
using System.Text;

namespace news.newsscript.impl
{
    /// <summary>
    /// Summary description for NewsCSharpScriptExcuter.
    /// </summary>
    public class NewsCSharpScriptExcuter:AbstractNewsScriptExcuter
    {
        public NewsCSharpScriptExcuter()
        {
            //
            // TODO: Add constructor logic here
            //
        }

        private CodeDomProvider provider;

        private ICodeCompiler compiler;
        
        private CompilerResults results;
        
        private CompilerParameters compilerparams;

        public override object RunNewsScript(object param)
        {
            return RunCSharpScript(Path,param);
        }


        private object RunCSharpScript(string directory ,object param)
        {
            DirectoryInfo directoryInfo =new DirectoryInfo(directory);
            provider = new Microsoft.CSharp.CSharpCodeProvider();
            compiler= provider.CreateCompiler();
            compilerparams = new CompilerParameters();
            //compilerparams.GenerateInMemory = true;
            compilerparams.ReferencedAssemblies.Add("System.dll");
            compilerparams.ReferencedAssemblies.Add("System.Windows.Forms.Dll");
            compilerparams.ReferencedAssemblies.Add("System.Configuration.Install.dll");
            compilerparams.ReferencedAssemblies.Add("System.Data.dll");
            compilerparams.ReferencedAssemblies.Add("System.Design.dll");
            compilerparams.ReferencedAssemblies.Add("System.DirectoryServices.dll");
            compilerparams.ReferencedAssemblies.Add("System.Drawing.Design.dll");
            compilerparams.ReferencedAssemblies.Add("System.Drawing.dll");
            compilerparams.ReferencedAssemblies.Add("System.EnterpriseServices.dll");
            compilerparams.ReferencedAssemblies.Add("System.Management.dll");
            compilerparams.ReferencedAssemblies.Add("System.Runtime.Remoting.dll");
            compilerparams.ReferencedAssemblies.Add("System.Messaging.dll");
            compilerparams.ReferencedAssemblies.Add("System.Security.dll");
            compilerparams.ReferencedAssemblies.Add("System.ServiceProcess.dll");
            compilerparams.ReferencedAssemblies.Add("System.XML.dll");
            compilerparams.GenerateExecutable = true;
            results = compiler.CompileAssemblyFromFileBatch(compilerparams,GetFileList(directoryInfo));
            if (results.Errors.HasErrors)
            {
                StringBuilder errors = new StringBuilder();
                foreach(System.CodeDom.Compiler.CompilerError error in results.Errors)
                {
                    errors.Append(error.ErrorText + "\r\n");                    
                }
                throw new NewsScriptCompileException(errors.ToString());
            }
            else
            {
                try
                {
                    Assembly generatedAssembly = results.CompiledAssembly;
                    object obj = null;
                    if (string.IsNullOrEmpty(this.ProcedureName)) {
                        obj = CallEntry(generatedAssembly, "NewsMainScript", param);
                    } else {
                        obj = CallEntry(generatedAssembly, ProcedureName, param);
                    }
                    return obj;
                }
                catch(Exception ex)
                {
                    throw new NewsScriptRuntimeException(ex.Message,ex);
                }
            }
        }
    }
}