Fanfic pocket archive library recommendation algorithm

algorithm.java

   private void generateRecs() {
        this.query = new SearchQuery();
        long longPref = Prefs.getLongPref(this, Prefs.RECS_DATE);
        if (longPref <= 0 || new Date().getTime() - longPref >= DateUtils.MILLIS_PER_DAY) {
            try {
                List<WorkItem> loadAll = ((ReaderApplication) getApplication()).openDb().getWorkItemDao().loadAll();
                int i = 0;
                for (WorkItem workItem : loadAll) {
                    StringBuilder stringBuilder = new StringBuilder();
                    SearchQuery searchQuery = this.query;
                    stringBuilder.append(searchQuery.tag);
                    stringBuilder.append("(");
                    searchQuery.tag = stringBuilder.toString();
                    List fandomIds = workItem.getFandomIds();
                    List relationshipIds = workItem.getRelationshipIds();
                    if (fandomIds.size() > 0) {
                        Fandom fandom = ((WorkFandom) fandomIds.get(0)).getFandom();
                        if (!(fandom == null || this.query.tag.contains(fandom.getFandomName()))) {
                            StringBuilder stringBuilder2 = new StringBuilder();
                            SearchQuery searchQuery2 = this.query;
                            stringBuilder2.append(searchQuery2.tag);
                            stringBuilder2.append(fandom.getFandomName());
                            searchQuery2.tag = stringBuilder2.toString();
                        }
                    }
                    if (relationshipIds.size() > 0) {
                        Relationship relationship = ((WorkRelationship) relationshipIds.get(0)).getRelationship();
                        if (!(relationship == null || this.query.tag.contains(relationship.getRelationshipName()))) {
                            stringBuilder = new StringBuilder();
                            searchQuery = this.query;
                            stringBuilder.append(searchQuery.tag);
                            stringBuilder.append(", ");
                            searchQuery.tag = stringBuilder.toString();
                            stringBuilder = new StringBuilder();
                            searchQuery = this.query;
                            stringBuilder.append(searchQuery.tag);
                            stringBuilder.append(relationship.getRelationshipName());
                            searchQuery.tag = stringBuilder.toString();
                        }
                    }
                    StringBuilder stringBuilder3 = new StringBuilder();
                    SearchQuery searchQuery3 = this.query;
                    stringBuilder3.append(searchQuery3.tag);
                    stringBuilder3.append(")");
                    searchQuery3.tag = stringBuilder3.toString();
                    if (i != loadAll.size() - 1) {
                        stringBuilder3 = new StringBuilder();
                        searchQuery3 = this.query;
                        stringBuilder3.append(searchQuery3.tag);
                        stringBuilder3.append(" || ");
                        searchQuery3.tag = stringBuilder3.toString();
                    }
                    i++;
                }
                Prefs.setLongPref(this, Prefs.RECS_DATE, new Date().getTime());
                Prefs.setStringPref(this, Prefs.RECS_QUERY_TAG, this.query.tag);
            } catch (Exception e) {
                e.printStackTrace();
                TastyToast.makeText(this, getString(C1362R.string.cant_gen_recs), 0, 3);
                Answers.getInstance().logCustom((CustomEvent) new CustomEvent("Recs_Err").putCustomAttribute("Recs", e.getMessage()));
            }
            return;
        }
        this.query.tag = Prefs.getStringPref(this, Prefs.RECS_QUERY_TAG);
    }