/*
 *
 * LineByLinePrinter (line-by-line-printer.js)
 * Author: rtfpessoa
 *
 */

var diffParser = new DiffParser();
var printerUtils = new PrinterUtils();
var utils = new Utils();

function LineByLinePrinter() {
}

LineByLinePrinter.prototype.generateLineByLineJsonHtml = function (diffFiles) {
  return "<div class=\"d2h-wrapper\">\n" +
    diffFiles.map(function (file) {
      return "<div class=\"d2h-file-wrapper\" data-lang=\"" + file.language + "\">\n" +
        "     <div class=\"d2h-file-header\">\n" +
        "       <div class=\"d2h-file-stats\">\n" +
        "         <span class=\"d2h-lines-added\">+" + file.addedLines + "</span>\n" +
        "         <span class=\"d2h-lines-deleted\">-" + file.deletedLines + "</span>\n" +
        "       </div>\n" +
        "       <div class=\"d2h-file-name\">" + printerUtils.getDiffName(file.oldName, file.newName) + "</div>\n" +
        "     </div>\n" +
        "     <div class=\"d2h-file-diff\">\n" +
        "       <div class=\"d2h-code-wrapper\">\n" +
        "         <table class=\"d2h-diff-table\">\n" +
        "           <tbody class=\"d2h-diff-tbody\">\n" +
        "         " + generateFileHtml(file) +
        "           </tbody>\n" +
        "         </table>\n" +
        "       </div>\n" +
        "     </div>\n" +
        "   </div>\n";
    }).join("\n") +
    "</div>\n";
};

function generateFileHtml(file) {
  return file.blocks.map(function (block) {

    var lines = "<tr>\n" +
      "  <td class=\"d2h-code-linenumber " + diffParser.LINE_TYPE.INFO + "\"></td>\n" +
      "  <td class=\"" + diffParser.LINE_TYPE.INFO + "\">" +
      "    <div class=\"d2h-code-line " + diffParser.LINE_TYPE.INFO + "\">" + utils.escape(block.header) + "</div>" +
      "  </td>\n" +
      "</tr>\n";

    var oldLines = [], newLines = [];
    var processedOldLines = [], processedNewLines = [];

    for (var i = 0; i < block.lines.length; i++) {
      var line = block.lines[i];
      var escapedLine = utils.escape(line.content);

      if (line.type == diffParser.LINE_TYPE.CONTEXT && !oldLines.length && !newLines.length) {
        lines += generateLineHtml(line.type, line.oldNumber, line.newNumber, escapedLine);
      } else if (line.type == diffParser.LINE_TYPE.INSERTS && !oldLines.length && !newLines.length) {
        lines += generateLineHtml(line.type, line.oldNumber, line.newNumber, escapedLine);
      } else if (line.type == diffParser.LINE_TYPE.DELETES && !newLines.length) {
        oldLines.push(line);
      } else if (line.type == diffParser.LINE_TYPE.INSERTS && oldLines.length > newLines.length) {
        newLines.push(line);
      } else {
        var j = 0;
        var oldLine, newLine;
        var oldEscapedLine, newEscapedLine;

        if (oldLines.length === newLines.length) {
          for (j = 0; j < oldLines.length; j++) {
            oldLine = oldLines[j];
            newLine = newLines[j];
            oldEscapedLine = utils.escape(oldLine.content);
            newEscapedLine = utils.escape(newLine.content);

            var diff = printerUtils.diffHighlight(oldEscapedLine, newEscapedLine, file.isTripleDiff);

            processedOldLines += generateLineHtml(oldLine.type, oldLine.oldNumber, oldLine.newNumber, diff.o);
            processedNewLines += generateLineHtml(newLine.type, newLine.oldNumber, newLine.newNumber, diff.n);
          }

          lines += processedOldLines + processedNewLines;
        } else {
          for (j = 0; j < oldLines.length; j++) {
            oldLine = oldLines[j];
            oldEscapedLine = utils.escape(oldLine.content);
            lines += generateLineHtml(oldLine.type, oldLine.oldNumber, oldLine.newNumber, oldEscapedLine);
          }

          for (j = 0; j < newLines.length; j++) {
            newLine = newLines[j];
            newEscapedLine = utils.escape(newLine.content);
            lines += generateLineHtml(newLine.type, newLine.oldNumber, newLine.newNumber, newEscapedLine);
          }
        }

        oldLines = [];
        newLines = [];
        processedOldLines = [];
        processedNewLines = [];
        i--;
      }
    }

    return lines;
  }).join("\n");
}

function generateLineHtml(type, oldNumber, newNumber, content) {
  return "<tr>\n" +
    "  <td class=\"d2h-code-linenumber " + type + "\">" +
    "    <div class=\"line-num1\">" + utils.valueOrEmpty(oldNumber) + "</div>" +
    "    <div class=\"line-num2\">" + utils.valueOrEmpty(newNumber) + "</div>" +
    "  </td>\n" +
    "  <td class=\"" + type + "\">" +
    "    <div class=\"d2h-code-line " + type + "\">" + content + "</div>" +
    "  </td>\n" +
    "</tr>\n";
}