var Handlebars = require("./base");

// BEGIN(BROWSER)
Handlebars.PrintVisitor = function() { this.padding = 0; };
Handlebars.PrintVisitor.prototype = new Handlebars.Visitor();

Handlebars.PrintVisitor.prototype.pad = function(string, newline) {
  var out = "";

  for(var i=0,l=this.padding; i<l; i++) {
    out = out + "  ";
  }

  out = out + string;

  if(newline !== false) { out = out + "\n"; }
  return out;
};

Handlebars.PrintVisitor.prototype.program = function(program) {
  var out = "",
      statements = program.statements,
      inverse = program.inverse,
      i, l;

  for(i=0, l=statements.length; i<l; i++) {
    out = out + this.accept(statements[i]);
  }

  this.padding--;

  return out;
};

Handlebars.PrintVisitor.prototype.block = function(block) {
  var out = "";

  out = out + this.pad("BLOCK:");
  this.padding++;
  out = out + this.accept(block.mustache);
  if (block.program) {
    out = out + this.pad("PROGRAM:");
    this.padding++;
    out = out + this.accept(block.program);
    this.padding--;
  }
  if (block.inverse) {
    if (block.program) { this.padding++; }
    out = out + this.pad("{{^}}");
    this.padding++;
    out = out + this.accept(block.inverse);
    this.padding--;
    if (block.program) { this.padding--; }
  }
  this.padding--;

  return out;
};

Handlebars.PrintVisitor.prototype.mustache = function(mustache) {
  var params = mustache.params, paramStrings = [], hash;

  for(var i=0, l=params.length; i<l; i++) {
    paramStrings.push(this.accept(params[i]));
  }

  params = "[" + paramStrings.join(", ") + "]";

  hash = mustache.hash ? " " + this.accept(mustache.hash) : "";

  return this.pad("{{ " + this.accept(mustache.id) + " " + params + hash + " }}");
};

Handlebars.PrintVisitor.prototype.partial = function(partial) {
  var content = this.accept(partial.id);
  if(partial.context) { content = content + " " + this.accept(partial.context); }
  return this.pad("{{> " + content + " }}");
};

Handlebars.PrintVisitor.prototype.hash = function(hash) {
  var pairs = hash.pairs;
  var joinedPairs = [], left, right;

  for(var i=0, l=pairs.length; i<l; i++) {
    left = pairs[i][0];
    right = this.accept(pairs[i][1]);
    joinedPairs.push( left + "=" + right );
  }

  return "HASH{" + joinedPairs.join(", ") + "}";
};

Handlebars.PrintVisitor.prototype.STRING = function(string) {
  return '"' + string.string + '"';
};

Handlebars.PrintVisitor.prototype.INTEGER = function(integer) {
  return "INTEGER{" + integer.integer + "}";
};

Handlebars.PrintVisitor.prototype.BOOLEAN = function(bool) {
  return "BOOLEAN{" + bool.bool + "}";
};

Handlebars.PrintVisitor.prototype.ID = function(id) {
  var path = id.parts.join("/");
  if(id.parts.length > 1) {
    return "PATH:" + path;
  } else {
    return "ID:" + path;
  }
};

Handlebars.PrintVisitor.prototype.DATA = function(data) {
  return "@" + data.id;
};

Handlebars.PrintVisitor.prototype.content = function(content) {
  return this.pad("CONTENT[ '" + content.string + "' ]");
};

Handlebars.PrintVisitor.prototype.comment = function(comment) {
  return this.pad("{{! '" + comment.comment + "' }}");
};
// END(BROWSER)

exports.PrintVisitor = Handlebars.PrintVisitor;
