// Michael Chladil
// 2007 11 08
//
// sonify_transactions_v1
//
// takes my gas purchase data and sonifies it

final int __DEBUG__ = 1;

class PriceRecords
{
   String Dates[];
   float  RawPrices[];
   float  ScaledPrices[];

   PriceRecords(String Filename)
   {
      String tmpLines[] = loadStrings(Filename);
      String tmpLine[]; // temporary storage while splitting a line into its respective data fields
      
      if (__DEBUG__ == 1)
         println ("Read " + tmpLines.length + " lines from " + Filename);
      
      Dates = new String[tmpLines.length - 1];
      RawPrices = new float[tmpLines.length - 1];
      ScaledPrices = new float[tmpLines.length - 1];
      
      /* load in raw records.  These will be separated by spaces.  
         Data fields are comma-separated.                         */

      for (int i=0; i < tmpLines.length - 1; i++)
      {
         tmpLine = split(tmpLines[i], ",");
         
         if ((tmpLine.length - 1) > 0) // is there an empty line?  
         { 
            Dates[i] = tmpLine[0];
            RawPrices[i] = float (tmpLine[1]);
         }
         else
         {
            // not necessary for this data set
         }
      }
   }
   
   float MinPrice ()
   {
      if (__DEBUG__ == 1)
         println ("min price=" + min(RawPrices));
      return (min(RawPrices));
   }
   
   float MaxPrice ()
   {
      if (__DEBUG__ == 1)
         println ("max price=" + max(RawPrices));
      
      return (max(RawPrices));
   }
   
   float PriceRange ()
   {
      return (max(RawPrices) - min(RawPrices));
   }

   void ComputeScaledPrices (float fMin, float fRange)
   {
      // assuming array has already been initialized
      for (int i=0; i < ScaledPrices.length - 1; i++)
      {
         ScaledPrices[i] = (RawPrices[i] - fMin) / fRange;
         if (__DEBUG__ == 1)
            println ("ScaledPrices[i]=" + ScaledPrices[i]);
      }
             
   }
   
} // PriceRecords

PrintWriter  output; // a "generic" filestream object for Processing

PriceRecords MyData;
float        PriceMin;
float        PriceMax;

MyData = new PriceRecords("gas one year.txt");

PriceMin = MyData.MinPrice();
PriceMax = MyData.MaxPrice();

MyData.ComputeScaledPrices (PriceMin, PriceMax - PriceMin);

output = createWriter("sonify.txt"); 

output.println("f 1 0 1024 10 1. 0.4 0.3 0.2 0.01"); // write out the CSound function table first

for (int i=0; i < MyData.ScaledPrices.length - 1; i++)
{
   if (MyData.ScaledPrices[i] > 0)
      output.println("i 1 " + (i * 0.05) + " 0.1 6.0 " + (MyData.ScaledPrices[i] * 8000));
      
   // put a sonic marker every seven days... ideally this will be different
   // I'd like to divide up the week into weekdays and weekends   
   
   output.println ("i 1 " + (i * 0.05) + " 0.01 12.0 5000");
   
   if (i % 7 == 0 ) 
      output.println("i 1 " + (i * 0.05) + " 0.05 10.0 6000");
      
      
}

output.println("e"); // ends the cSound score file

output.flush(); // Writes the remaining data to the file
output.close(); // Finishes the file
exit(); // Stops the program