var __slice = [].slice,
  __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
  __hasProp = {}.hasOwnProperty;

module.exports = function() {
  var execution_listener, ops;
  ops = {};
  execution_listener = [];
  ops.Operation = (function() {
    function Operation(custom_type, uid) {
      if (custom_type != null) {
        this.custom_type = custom_type;
      }
      this.is_deleted = false;
      this.garbage_collected = false;
      this.event_listeners = [];
      if (uid != null) {
        this.uid = uid;
      }
    }

    Operation.prototype.type = "Operation";

    Operation.prototype.retrieveSub = function() {
      throw new Error("sub properties are not enable on this operation type!");
    };

    Operation.prototype.observe = function(f) {
      return this.event_listeners.push(f);
    };

    Operation.prototype.unobserve = function(f) {
      return this.event_listeners = this.event_listeners.filter(function(g) {
        return f !== g;
      });
    };

    Operation.prototype.deleteAllObservers = function() {
      return this.event_listeners = [];
    };

    Operation.prototype["delete"] = function() {
      (new ops.Delete(void 0, this)).execute();
      return null;
    };

    Operation.prototype.callEvent = function() {
      var callon;
      if (this.custom_type != null) {
        callon = this.getCustomType();
      } else {
        callon = this;
      }
      return this.forwardEvent.apply(this, [callon].concat(__slice.call(arguments)));
    };

    Operation.prototype.forwardEvent = function() {
      var args, f, op, _i, _len, _ref, _results;
      op = arguments[0], args = 2 <= arguments.length ? __slice.call(arguments, 1) : [];
      _ref = this.event_listeners;
      _results = [];
      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
        f = _ref[_i];
        _results.push(f.call.apply(f, [op].concat(__slice.call(args))));
      }
      return _results;
    };

    Operation.prototype.isDeleted = function() {
      return this.is_deleted;
    };

    Operation.prototype.applyDelete = function(garbagecollect) {
      if (garbagecollect == null) {
        garbagecollect = true;
      }
      if (!this.garbage_collected) {
        this.is_deleted = true;
        if (garbagecollect) {
          this.garbage_collected = true;
          return this.HB.addToGarbageCollector(this);
        }
      }
    };

    Operation.prototype.cleanup = function() {
      this.HB.removeOperation(this);
      return this.deleteAllObservers();
    };

    Operation.prototype.setParent = function(_at_parent) {
      this.parent = _at_parent;
    };

    Operation.prototype.getParent = function() {
      return this.parent;
    };

    Operation.prototype.getUid = function() {
      var map_uid;
      if (this.uid.noOperation == null) {
        return this.uid;
      } else {
        if (this.uid.alt != null) {
          map_uid = this.uid.alt.cloneUid();
          map_uid.sub = this.uid.sub;
          return map_uid;
        } else {
          return void 0;
        }
      }
    };

    Operation.prototype.cloneUid = function() {
      var n, uid, v, _ref;
      uid = {};
      _ref = this.getUid();
      for (n in _ref) {
        v = _ref[n];
        uid[n] = v;
      }
      return uid;
    };

    Operation.prototype.execute = function() {
      var l, _i, _len;
      this.is_executed = true;
      if (this.uid == null) {
        this.uid = this.HB.getNextOperationIdentifier();
      }
      if (this.uid.noOperation == null) {
        this.HB.addOperation(this);
        for (_i = 0, _len = execution_listener.length; _i < _len; _i++) {
          l = execution_listener[_i];
          l(this._encode());
        }
      }
      return this;
    };

    Operation.prototype._encode = function(json) {
      if (json == null) {
        json = {};
      }
      json.type = this.type;
      json.uid = this.getUid();
      if (this.custom_type != null) {
        if (this.custom_type.constructor === String) {
          json.custom_type = this.custom_type;
        } else {
          json.custom_type = this.custom_type._name;
        }
      }
      return json;
    };

    Operation.prototype.saveOperation = function(name, op) {
      if (op == null) {

      } else if ((op.execute != null) || !((op.op_number != null) && (op.creator != null))) {
        return this[name] = op;
      } else {
        if (this.unchecked == null) {
          this.unchecked = {};
        }
        return this.unchecked[name] = op;
      }
    };

    Operation.prototype.validateSavedOperations = function() {
      var name, op, op_uid, success, uninstantiated, _ref;
      uninstantiated = {};
      success = this;
      _ref = this.unchecked;
      for (name in _ref) {
        op_uid = _ref[name];
        op = this.HB.getOperation(op_uid);
        if (op) {
          this[name] = op;
        } else {
          uninstantiated[name] = op_uid;
          success = false;
        }
      }
      delete this.unchecked;
      if (!success) {
        this.unchecked = uninstantiated;
      }
      return success;
    };

    Operation.prototype.getCustomType = function() {
      if (this.custom_type == null) {
        throw new Error("This operation was not initialized with a custom type");
      }
      if (this.custom_type.constructor === String) {
        this.custom_type = new this.custom_types[this.custom_type]();
        this.custom_type._setModel(this);
      }
      return this.custom_type;
    };

    return Operation;

  })();
  ops.Delete = (function(_super) {
    __extends(Delete, _super);

    function Delete(custom_type, uid, deletes) {
      this.saveOperation('deletes', deletes);
      Delete.__super__.constructor.call(this, custom_type, uid);
    }

    Delete.prototype.type = "Delete";

    Delete.prototype._encode = function() {
      return {
        'type': "Delete",
        'uid': this.getUid(),
        'deletes': this.deletes.getUid()
      };
    };

    Delete.prototype.execute = function() {
      var res;
      if (this.validateSavedOperations()) {
        res = Delete.__super__.execute.apply(this, arguments);
        if (res) {
          this.deletes.applyDelete(this);
        }
        return res;
      } else {
        return false;
      }
    };

    return Delete;

  })(ops.Operation);
  ops.Delete.parse = function(o) {
    var deletes_uid, uid;
    uid = o['uid'], deletes_uid = o['deletes'];
    return new this(null, uid, deletes_uid);
  };
  ops.Insert = (function(_super) {
    __extends(Insert, _super);

    function Insert(custom_type, content, uid, prev_cl, next_cl, origin, parent) {
      if (content === void 0) {

      } else if ((content != null) && (content.creator != null)) {
        this.saveOperation('content', content);
      } else {
        this.content = content;
      }
      this.saveOperation('parent', parent);
      this.saveOperation('prev_cl', prev_cl);
      this.saveOperation('next_cl', next_cl);
      if (origin != null) {
        this.saveOperation('origin', origin);
      } else {
        this.saveOperation('origin', prev_cl);
      }
      Insert.__super__.constructor.call(this, custom_type, uid);
    }

    Insert.prototype.type = "Insert";

    Insert.prototype.val = function() {
      if ((this.content != null) && (this.content.getCustomType != null)) {
        return this.content.getCustomType();
      } else {
        return this.content;
      }
    };

    Insert.prototype.applyDelete = function(o) {
      var callLater, garbagecollect, _ref;
      if (this.deleted_by == null) {
        this.deleted_by = [];
      }
      callLater = false;
      if ((this.parent != null) && !this.is_deleted && (o != null)) {
        callLater = true;
      }
      if (o != null) {
        this.deleted_by.push(o);
      }
      garbagecollect = false;
      if (this.next_cl.isDeleted()) {
        garbagecollect = true;
      }
      Insert.__super__.applyDelete.call(this, garbagecollect);
      if (callLater) {
        this.callOperationSpecificDeleteEvents(o);
      }
      if ((_ref = this.prev_cl) != null ? _ref.isDeleted() : void 0) {
        return this.prev_cl.applyDelete();
      }
    };

    Insert.prototype.cleanup = function() {
      var d, o, _i, _len, _ref;
      if (this.next_cl.isDeleted()) {
        _ref = this.deleted_by;
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          d = _ref[_i];
          d.cleanup();
        }
        o = this.next_cl;
        while (o.type !== "Delimiter") {
          if (o.origin === this) {
            o.origin = this.prev_cl;
          }
          o = o.next_cl;
        }
        this.prev_cl.next_cl = this.next_cl;
        this.next_cl.prev_cl = this.prev_cl;
        if (this.content instanceof ops.Operation) {
          this.content.referenced_by--;
          if (this.content.referenced_by <= 0 && !this.content.is_deleted) {
            this.content.applyDelete();
          }
        }
        delete this.content;
        return Insert.__super__.cleanup.apply(this, arguments);
      }
    };

    Insert.prototype.getDistanceToOrigin = function() {
      var d, o;
      d = 0;
      o = this.prev_cl;
      while (true) {
        if (this.origin === o) {
          break;
        }
        d++;
        o = o.prev_cl;
      }
      return d;
    };

    Insert.prototype.execute = function() {
      var distance_to_origin, i, o, _base;
      if (!this.validateSavedOperations()) {
        return false;
      } else {
        if (this.content instanceof ops.Operation) {
          this.content.insert_parent = this;
          if ((_base = this.content).referenced_by == null) {
            _base.referenced_by = 0;
          }
          this.content.referenced_by++;
        }
        if (this.parent != null) {
          if (this.prev_cl == null) {
            this.prev_cl = this.parent.beginning;
          }
          if (this.origin == null) {
            this.origin = this.prev_cl;
          } else if (this.origin === "Delimiter") {
            this.origin = this.parent.beginning;
          }
          if (this.next_cl == null) {
            this.next_cl = this.parent.end;
          }
        }
        if (this.prev_cl != null) {
          distance_to_origin = this.getDistanceToOrigin();
          o = this.prev_cl.next_cl;
          i = distance_to_origin;
          while (true) {
            if (o !== this.next_cl) {
              if (o.getDistanceToOrigin() === i) {
                if (o.uid.creator < this.uid.creator) {
                  this.prev_cl = o;
                  distance_to_origin = i + 1;
                } else {

                }
              } else if (o.getDistanceToOrigin() < i) {
                if (i - distance_to_origin <= o.getDistanceToOrigin()) {
                  this.prev_cl = o;
                  distance_to_origin = i + 1;
                } else {

                }
              } else {
                break;
              }
              i++;
              o = o.next_cl;
            } else {
              break;
            }
          }
          this.next_cl = this.prev_cl.next_cl;
          this.prev_cl.next_cl = this;
          this.next_cl.prev_cl = this;
        }
        this.setParent(this.prev_cl.getParent());
        Insert.__super__.execute.apply(this, arguments);
        this.callOperationSpecificInsertEvents();
        return this;
      }
    };

    Insert.prototype.callOperationSpecificInsertEvents = function() {
      var getContentType, _ref;
      getContentType = function(content) {
        if (content instanceof ops.Operation) {
          return content.getCustomType();
        } else {
          return content;
        }
      };
      return (_ref = this.parent) != null ? _ref.callEvent([
        {
          type: "insert",
          position: this.getPosition(),
          object: this.parent.getCustomType(),
          changedBy: this.uid.creator,
          value: getContentType(this.content)
        }
      ]) : void 0;
    };

    Insert.prototype.callOperationSpecificDeleteEvents = function(o) {
      return this.parent.callEvent([
        {
          type: "delete",
          position: this.getPosition(),
          object: this.parent.getCustomType(),
          length: 1,
          changedBy: o.uid.creator,
          oldValue: this.val()
        }
      ]);
    };

    Insert.prototype.getPosition = function() {
      var position, prev;
      position = 0;
      prev = this.prev_cl;
      while (true) {
        if (prev instanceof ops.Delimiter) {
          break;
        }
        if (!prev.isDeleted()) {
          position++;
        }
        prev = prev.prev_cl;
      }
      return position;
    };

    Insert.prototype._encode = function(json) {
      var _ref;
      if (json == null) {
        json = {};
      }
      json.prev = this.prev_cl.getUid();
      json.next = this.next_cl.getUid();
      json.parent = this.parent.getUid();
      if (this.origin.type === "Delimiter") {
        json.origin = "Delimiter";
      } else if (this.origin !== this.prev_cl) {
        json.origin = this.origin.getUid();
      }
      if (((_ref = this.content) != null ? _ref.getUid : void 0) != null) {
        json['content'] = this.content.getUid();
      } else {
        json['content'] = JSON.stringify(this.content);
      }
      return Insert.__super__._encode.call(this, json);
    };

    return Insert;

  })(ops.Operation);
  ops.Insert.parse = function(json) {
    var content, next, origin, parent, prev, uid;
    content = json['content'], uid = json['uid'], prev = json['prev'], next = json['next'], origin = json['origin'], parent = json['parent'];
    if (typeof content === "string") {
      content = JSON.parse(content);
    }
    return new this(null, content, uid, prev, next, origin, parent);
  };
  ops.Delimiter = (function(_super) {
    __extends(Delimiter, _super);

    function Delimiter(prev_cl, next_cl, origin) {
      this.saveOperation('prev_cl', prev_cl);
      this.saveOperation('next_cl', next_cl);
      this.saveOperation('origin', prev_cl);
      Delimiter.__super__.constructor.call(this, null, {
        noOperation: true
      });
    }

    Delimiter.prototype.type = "Delimiter";

    Delimiter.prototype.applyDelete = function() {
      var o;
      Delimiter.__super__.applyDelete.call(this);
      o = this.prev_cl;
      while (o != null) {
        o.applyDelete();
        o = o.prev_cl;
      }
      return void 0;
    };

    Delimiter.prototype.cleanup = function() {
      return Delimiter.__super__.cleanup.call(this);
    };

    Delimiter.prototype.execute = function() {
      var _ref, _ref1;
      if (((_ref = this.unchecked) != null ? _ref['next_cl'] : void 0) != null) {
        return Delimiter.__super__.execute.apply(this, arguments);
      } else if ((_ref1 = this.unchecked) != null ? _ref1['prev_cl'] : void 0) {
        if (this.validateSavedOperations()) {
          if (this.prev_cl.next_cl != null) {
            throw new Error("Probably duplicated operations");
          }
          this.prev_cl.next_cl = this;
          return Delimiter.__super__.execute.apply(this, arguments);
        } else {
          return false;
        }
      } else if ((this.prev_cl != null) && (this.prev_cl.next_cl == null)) {
        delete this.prev_cl.unchecked.next_cl;
        this.prev_cl.next_cl = this;
        return Delimiter.__super__.execute.apply(this, arguments);
      } else if ((this.prev_cl != null) || (this.next_cl != null) || true) {
        return Delimiter.__super__.execute.apply(this, arguments);
      }
    };

    Delimiter.prototype._encode = function() {
      var _ref, _ref1;
      return {
        'type': this.type,
        'uid': this.getUid(),
        'prev': (_ref = this.prev_cl) != null ? _ref.getUid() : void 0,
        'next': (_ref1 = this.next_cl) != null ? _ref1.getUid() : void 0
      };
    };

    return Delimiter;

  })(ops.Operation);
  ops.Delimiter.parse = function(json) {
    var next, prev, uid;
    uid = json['uid'], prev = json['prev'], next = json['next'];
    return new this(uid, prev, next);
  };
  return {
    'operations': ops,
    'execution_listener': execution_listener
  };
};