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package algs35;
import stdlib.*;
import algs13.Queue;
/* ***********************************************************************
 *  Compilation:  javac LookupIndex.java
 *  Execution:    java LookupIndex movies.txt "/"
 *  Dependencies: ST.java Queue.java In.java StdIn.java StdOut.java
 *  Data files:   http://algs4.cs.princeton.edu/35applications/aminoI.txt
 *                http://algs4.cs.princeton.edu/35applications/movies.txt
 *
 *  % java LookupIndex aminoI.txt ","
 *  Serine
 *    TCT
 *    TCA
 *    TCG
 *    AGT
 *    AGC
 *  TCG
 *    Serine
 *
 *  % java LookupIndex movies.txt "/"
 *  Bacon, Kevin
 *    Animal House (1978)
 *    Apollo 13 (1995)
 *    Beauty Shop (2005)
 *    Diner (1982)
 *    Few Good Men, A (1992)
 *    Flatliners (1990)
 *    Footloose (1984)
 *    Friday the 13th (1980)
 *    ...
 *  Tin Men (1987)
 *    DeBoy, David
 *    Blumenfeld, Alan
 *    ...
 *
 *************************************************************************/

public class LookupIndex {

  public static void main(String[] args) {
    //args = new String[] { "data/aminoI.txt", "," }; StdIn.fromString ("Serine");
    //args = new String[] { "data/aminoI.txt", "," }; //StdIn.fromString ("ATG");
    //args = new String[] { "data/movies.txt", "/" }; StdIn.fromString ("Bacon, Kevin");
    args = new String[] { "data/movies.txt", "/" }; StdIn.fromString ("12 Angry Men (1957)");

    String filename  = args[0];
    String separator = args[1];
    In in = new In(filename);

    ST<String, Queue<String>> st = new ST<>();
    ST<String, Queue<String>> ts = new ST<>();

    while (in.hasNextLine()) {
      String line = in.readLine();
      String[] fields = line.split(separator);
      String key = fields[0];
      for (int i = 1; i < fields.length; i++) {
        String val = fields[i];
        if (!st.contains(key)) st.put(key, new Queue<>());
        if (!ts.contains(val)) ts.put(val, new Queue<>());
        st.get(key).enqueue(val);
        ts.get(val).enqueue(key);
      }
    }

    StdOut.println("Done indexing");

    // read queries from standard input, one per line
    while (!StdIn.isEmpty()) {
      String query = StdIn.readLine();
      if (st.contains(query))
        for (String vals : st.get(query))
          StdOut.println("  " + vals);
      if (ts.contains(query))
        for (String keys : ts.get(query))
          StdOut.println("  " + keys);
    }

  }

}