/*
 * ISC License
 *
 * Copyright (c) 2024 idnovate.com
 * idnovate is a Registered Trademark & Property of idnovate.com, innovación y desarrollo SCP
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 *
 * @author    idnovate
 * @copyright 2024 idnovate
 * @license   https://www.isc.org/licenses/ https://opensource.org/licenses/ISC ISC License
 */

// Defines jumpToLine command. Uses dialog.js if present.

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"), require("../dialog/dialog"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror", "../dialog/dialog"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  function dialog(cm, text, shortText, deflt, f) {
    if (cm.openDialog) cm.openDialog(text, f, {value: deflt, selectValueOnOpen: true});
    else f(prompt(shortText, deflt));
  }

  function getJumpDialog(cm) {
    return cm.phrase("Jump to line:") + ' <input type="text" style="width: 10em" class="CodeMirror-search-field"/> <span style="color: #888" class="CodeMirror-search-hint">' + cm.phrase("(Use line:column or scroll% syntax)") + '</span>';
  }

  function interpretLine(cm, string) {
    var num = Number(string)
    if (/^[-+]/.test(string)) return cm.getCursor().line + num
    else return num - 1
  }

  CodeMirror.commands.jumpToLine = function(cm) {
    var cur = cm.getCursor();
    dialog(cm, getJumpDialog(cm), cm.phrase("Jump to line:"), (cur.line + 1) + ":" + cur.ch, function(posStr) {
      if (!posStr) return;

      var match;
      if (match = /^\s*([\+\-]?\d+)\s*\:\s*(\d+)\s*$/.exec(posStr)) {
        cm.setCursor(interpretLine(cm, match[1]), Number(match[2]))
      } else if (match = /^\s*([\+\-]?\d+(\.\d+)?)\%\s*/.exec(posStr)) {
        var line = Math.round(cm.lineCount() * Number(match[1]) / 100);
        if (/^[-+]/.test(match[1])) line = cur.line + line + 1;
        cm.setCursor(line - 1, cur.ch);
      } else if (match = /^\s*\:?\s*([\+\-]?\d+)\s*/.exec(posStr)) {
        cm.setCursor(interpretLine(cm, match[1]), cur.ch);
      }
    });
  };

  CodeMirror.keyMap["default"]["Alt-G"] = "jumpToLine";
});