using System;

const string PhraseFileEnvVar = "PhraseFile";

if ( ! DataSet.Project.EnvironmentVariables.Has(PhraseFileEnvVar) )
{
    throw new ApplicationException("Environment variable not set: " + PhraseFileEnvVar);
}

string filePath = DataSet.Project.EnvironmentVariables.Get(PhraseFileEnvVar);

if ( string.IsNullOrEmpty(filePath) )
{
    throw new ApplicationException("Value for environment variable is not set: " + PhraseFileEnvVar);
}

if (!System.IO.File.Exists(filePath))
{
    throw new ApplicationException("The specified file does not exist: " + filePath);
}

// Read lines from file and populate dataset
string[] lines = System.IO.File.ReadAllLines(filePath);
int lineIndex = 1;
foreach (string line in lines)
{
    string phrase = line.Trim();
    if (!string.IsNullOrEmpty(phrase))
    {
        IDataSetRecord record = DataSet.CreateRecord();
        record.AddValue("Id", lineIndex++);
        record.AddValue("Phrase", phrase);
        DataSet.AddRecord(record);
    }
}