var sectionNum = 0;
var toolchanges = [];

function populateToolChanges(gcode) {

  // toolChanges
  toolchanges = setupToolChanges(gcode);

  if (toolchanges.length) {
    $('#runBtn').hide()
    $('#runToolsBtn').show()
    $('#toolChangesMenu').empty();
    var dropdownTemplate = ``;
    if (toolchanges[0].lineNum > 0) {
      dropdownTemplate += `<li onclick="runGcodeAllTools()"><a href="#" onclick=""><i class="fas fa-play"></i> Run Complete Job</a></li>`
      dropdownTemplate += `<li class="divider"></li>`
      dropdownTemplate += `<li onclick="runGcodeSection(` + 0 + `,` + toolchanges[0].lineNum + `)"><a href="#" onclick=""><i class="fas fa-play"></i> Run Header (lines 1-` + toolchanges[0].lineNum + `)</a></li>`

    }
    for (i = 0; i < toolchanges.length; i++) {
      var endline = false;
      if (toolchanges[i + 1]) {
        endline = toolchanges[i + 1].lineNum
      }
      dropdownTemplate += `<li onclick="runGcodeSection(` + toolchanges[i].lineNum + `,` + endline + `)">`
      dropdownTemplate += `<a href="#" onclick=""><i class="fas fa-play"></i> Run Tool `
      if (toolchanges[i].toolNum) {
        dropdownTemplate += toolchanges[i].toolNum + ` `
      }
      dropdownTemplate += ` from line ` + (toolchanges[i].lineNum + 1) + ` `
      if (toolchanges[i].toolComment) {
        dropdownTemplate += `/ Tool Details: ` + toolchanges[i].toolComment + ` `
      }
      if (toolchanges[i].sectionComment) {
        dropdownTemplate += `/ Section ` + toolchanges[i].sectionComment + ` `
      }
      dropdownTemplate += `</a></li>`
    }
    $('#toolChangesMenu').html(dropdownTemplate)
  } else {
    $('#runBtn').show()
    $('#runToolsBtn').hide()
  }
}

function runGcodeAllTools() {

  var gcode = editor.getValue()
  gcodeLines = gcode.split("\n")

  var multiToolJob = [];

  // Header
  if (toolchanges[0].lineNum > 0) {
    var headergcode = gcodeLines.slice(0, toolchanges[0].lineNum).join("\n").replace(/M6|M06|M006/i, "");
    var section = {
      gcode: headergcode,
      toolNum: false,
      toolComment: false,
      sectionComment: sectionComment,
      startLine: 0,
      endLine: toolchanges[0].lineNum,
      completed: false
    }
    multiToolJob.push(section)
  }

  // Toolchanges
  for (i = 0; i < toolchanges.length; i++) {
    var startLine = toolchanges[i].lineNum + 1
    if (toolchanges[i + 1]) {
      var endLine = toolchanges[i + 1].lineNum
    } else {
      endLine = false;
    }
    if (toolchanges[i].toolNum) {
      var toolNum = toolchanges[i].toolNum
    }
    if (toolchanges[i].toolComment) {
      var toolComment = toolchanges[i].toolComment
    }
    if (toolchanges[i].sectionComment) {
      var sectionComment = toolchanges[i].sectionComment
    }
    if (endLine) {
      var newgcode = gcodeLines.slice(startLine, endLine).join("\n").replace(/M6|M06|M006/i, "");
    } else {
      var newgcode = gcodeLines.slice(startLine).join("\n").replace(/M6|M06|M006/i, "");
    }
    var section = {
      gcode: newgcode,
      toolNum: toolNum,
      toolComment: toolComment,
      sectionComment: sectionComment,
      startLine: startLine,
      endLine: endLine,
      completed: false
    }
    multiToolJob.push(section)
  }
  // Now run this array one by one
  console.log(JSON.stringify(multiToolJob))
}

// endline can be Blank
function runGcodeSection(startline, endline) {
  var gcode = editor.getValue()
  gcodeLines = gcode.split("\n")
  if (endline) {
    var newgcode = gcodeLines.slice(startline, endline)
  } else {
    var newgcode = gcodeLines.slice(startline)
  }

  var newGcodeString = newgcode.join("\n").replace(/M6|M06|M006/i, "");

  console.log(newGcodeString)
  socket.emit('runJob', {
    data: newGcodeString,
    isJob: true,
    fileName: ""
  });
}

function setupToolChanges(gcode) {
  // scan gcode for tool change info
  var fileLines = gcode
  fileLines = fileLines.split("\n")
  // console.log("about to look for tool changes in gcode editor:", fileLines.length, "\n\n\n");

  var toolComments = {};
  var toolChanges = {};
  var toolChangesKeys = [];

  for (var i = 0; i < fileLines.length; i++) {
    var line = fileLines[i];

    // see if we have line where comment starts with
    // look for something like:
    // (T1 D=3.175 CR=0. - ZMIN=-4.2 - FLAT END MILL)
    // ;T1 1/4 inch flat bottom endmill
    // T0 ; 1/4 inch flat bottom endmill
    if (line.match(/\(T(\d+)\s+(.*)\)/i) || line.match(/\;T(\d+)\s+(.*)\)/i) || line.match(/\T(\d+)/i)) {
      var toolNum = parseInt(RegExp.$1);
      if (toolComments[toolNum] && !toolComments[toolNum].toolComment) {
        // var toolComment = "T" + toolNum + " " + RegExp.$2;
      } else if (toolComments[toolNum] && toolComments[toolNum].toolComment) {
        var toolComment = toolComments[toolNum].toolComment + " " + RegExp.$2;
      } else {
        var toolComment = "T" + toolNum + " " + RegExp.$2;
      }
      // var toolComment = "T" + toolNum + " " + RegExp.$2;
      console.log("found tool comment. lineNum:", i, "toolNum:", toolNum, "comment:", toolComment, "line:", line);
      toolComments[toolNum] = {
        lineNum: i + 1,
        toolNum: toolNum,
        toolComment: toolComment,
      }
    }

    // look for M6 line
    if (line.match(/M6|M06|M006/i)) {
      var toolNum;
      if (line.match(/T(\d+)/i)) {
        toolNum = parseInt(RegExp.$1);
      }
      toolChanges[(i + 1)] = {
        lineNum: i + 1,
        toolNum: toolNum,
      };
      toolChangesKeys.push(i + 1);
      // console.log("found tool change. lineNum:", i, "line:", line);
    }
  }

  // console.log("this.toolComments:", toolComments);
  // console.log("this.toolChanges:", toolChanges);

  // now look for a comment up to 10 lines above the M6 tool change line to see if any comments are there
  var keys = toolChangesKeys; //Object.keys(this.toolChanges).sort();
  // console.log("looking for comments above m6 to get a label for this tool change. keys:", keys);
  for (var i = 0; i < keys.length; i++) {
    var toolChangeLineNum = keys[i];
    var lookBackToLineNum = toolChangeLineNum - 10;
    if (lookBackToLineNum < 1) lookBackToLineNum = 1; // first line

    // now look backwards until we've seen just 1 comment
    for (var lineNum = toolChangeLineNum; lineNum >= lookBackToLineNum; lineNum--) {
      var line = fileLines[lineNum - 1]; // index of array is 1 less than lineNum
      // console.log("looking at lineNum:", lineNum, "line:", line);
      // see if comment
      if (line.match(/\((.*?)\)/) || line.match(/;(.*)/)) {
        var comment = RegExp.$1;
        // console.log("found comment:", comment);

        // stick comment into toolChanges
        toolChanges[toolChangeLineNum].sectionComment = comment;

        // break since we found one
        break;
      }
    }
  }

  // console.log("after adding section comments. this.toolChanges:", toolChanges);
  // console.log("after adding section comments. this.toolComments:", toolComments);
  // console.log("after adding section comments. this.toolChangesKeys:", toolChangesKeys);

  var toolChangesArray = []

  for (var i = 0; i < keys.length; i++) {

    var toolChange = toolChanges[keys[i]];
    console.log(toolChange)
    var tool = toolComments[toolChange.toolNum];
    var newToolChange = {
      lineNum: false,
      toolNum: false,
      toolComment: false,
      sectionComment: false
    }

    newToolChange.toolNum = toolChange.toolNum
    newToolChange.lineNum = toolChange.lineNum

    if ('sectionComment' in toolChange) {
      newToolChange.sectionComment = toolChange.sectionComment
    }

    if (tool != null) {
      newToolChange.toolComment = tool.toolComment
    }

    toolChangesArray.push(newToolChange)
  }

  return toolChangesArray;

}