NotePostApp/www/js/Notes.class.js

/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
class Notes {
  constructor() {
    this.notes = [];
  }

  get(noteid) {
    for (var i = 0; i < this.notes.length; i++) {
      if (this.notes[i].noteid == noteid) {
        return this.notes[i];
      }
    }

    return null;
  }

  getAll() {
    return this.notes;
  }

  set(note) {
    for (var i = 0; i < this.notes.length; i++) {
      if (this.notes[i].noteid == note.noteid) {
        // Refresh HTML rendering
        note.html = marked(note.content);
        this.notes[i] = note;
        this.save();
        return;
      }
    }

    this.notes.push(note);
    this.save();
  }

  del(noteid, success, error) {
    var newnotearr = [];

    for (var i = 0; i < this.notes.length; i++) {
      if (this.notes[i].noteid != noteid) {
        newnotearr.push(this.notes[i]);
      }
    }

    this.notes = newnotearr;
    this.save();

    if (typeof success == 'function') {
      success();
    }
  }

  add(note, success, error) {
    var noteid = null;

    do {
      noteid = Math.floor(Math.random() * (9999999999 - 1000000000) + 1000000000);
      console.log("Generating random note ID: " + noteid);
    } while (this.get(noteid) != null);

    note["noteid"] = noteid;
    this.notes.push(note);
    this.save();

    if (typeof success == 'function') {
      success(note);
    }
  }

  fix(note) {
    if (typeof note.noteid !== 'number') {
      note.noteid = null;
    } // Set background color


    if (typeof note.color !== 'string') {
      note.color = "FFF59D";
    } // Set text color based on background


    if (typeof note.textcolor !== 'string') {
      var r = parseInt(note.color.substring(0, 2), 16);
      var g = parseInt(note.color.substring(2, 4), 16);
      var b = parseInt(note.color.substring(4, 6), 16);
      var contrast = Math.sqrt(r * r * 0.241 + g * g * 0.691 + b * b * 0.068);

      if (contrast > 130) {
        note.textcolor = "000000";
      } else {
        note.textcolor = "FFFFFF";
      }
    } // Just in case


    if (typeof note.content !== 'string') {
      note.content = "";
    } // Set title


    if (typeof note.title !== 'string') {
      note.title = note.content.split('\n')[0].replace(/[#\-]+/gi, "").trim();
    }

    if (typeof note.modified !== 'number') {
      note.modified = Math.round(new Date().getTime() / 1000);
    } // Render Markdown to HTML


    if (typeof note.html !== 'string') {
      note.html = marked(note.content);
    } // Save


    return note;
  }

  fixAll() {
    for (var i = 0; i < this.notes.length; i++) {
      this.notes[i] = this.fix(this.notes[i]);
    }

    this.save();
  }
  /**
   * Sync notes with the storage backend.
   *
   * @param {type} success
   * @param {type} error
   * @returns {undefined}
   */


  sync(success, error) {
    if (localStorage.getItem("notes") !== null) {
      // There is localstorage
      var storage = JSON.parse(localStorage.getItem("notes"));
      console.log("Memory copy:", this.notes);
      console.log("Storage copy:", storage);
      var delta = getDelta(this.notes, storage);
      console.log("Comparison: ", delta);
      var notes = delta.noChange;
      notes = notes.concat(delta.addedRemote);
      notes = notes.concat(delta.changedRemote);
      notes = notes.concat(delta.addedLocal);
      notes = notes.concat(delta.changedLocal); // If localStorage is missing something, we still want it

      notes = notes.concat(delta.deletedRemote);
      this.notes = notes;
      this.fixAll();
    }

    this.save();

    if (typeof success == 'function') {
      success(this.notes);
    }
  }

  save() {
    localStorage.setItem("notes", JSON.stringify(this.notes));
  }

}