define(['base/js/namespace', 'base/js/events'], function (Jupyter, events) {
  // Template cells including markdown and imports
  var setUp = function () {
    Jupyter.notebook.insert_cell_at_index('markdown', 0)
      .set_text(`# Introduction
State notebook purpose here`)
    Jupyter.notebook.insert_cell_at_index('markdown', 1).set_text(`### Imports
Import libraries and write settings here.`)
    // Define imports and settings
    Jupyter.notebook.insert_cell_at_index('code', 2)
      .set_text(`# Data manipulation
import pandas as pd
import numpy as np

# Options for pandas
pd.options.display.max_columns = 50
pd.options.display.max_rows = 30

# Display all cell outputs
from IPython.core.interactiveshell import InteractiveShell
InteractiveShell.ast_node_interactivity = 'all'

from IPython import get_ipython
ipython = get_ipython()

# autoreload extension
if 'autoreload' not in ipython.extension_manager.loaded:
    %load_ext autoreload

%autoreload 2

# Visualizations
import chart_studio.plotly as py
import plotly.graph_objs as go
from plotly.offline import iplot, init_notebook_mode
init_notebook_mode(connected=True)

import cufflinks as cf
cf.go_offline(connected=True)
cf.set_config_file(theme='white')`)
    Jupyter.notebook.insert_cell_at_index('markdown', 3)
      .set_text(`# Analysis/Modeling
Do work here`)
    Jupyter.notebook.insert_cell_at_index('markdown', 4).set_text(`# Results
Show graphs and stats here`)
    Jupyter.notebook.insert_cell_at_index('markdown', 5)
      .set_text(`# Conclusions and Next Steps
Summarize findings here`)
    // Run all cells
    Jupyter.notebook.execute_all_cells()
  }
  // Prompts user to enter name for notebook
  var promptName = function () {
    // Open rename notebook box if 'Untitled' in name
    if (Jupyter.notebook.notebook_name.search('Untitled') != -1) {
      document.getElementsByClassName('filename')[0].click()
    }
  }
  // Run on start
  function load_ipython_extension () {
    // Add default cells for new notebook
    if (Jupyter.notebook.get_cells().length === 1) {
      setTimeout(setUp, 500)
    } else {
      promptName()
    }
  }
  // Run when cell is executed
  events.on('execute.CodeCell', function () {
    promptName()
  })
  // Run when notebook is saved
  events.on('before_save.Notebook', function () {
    promptName()
  })
  return {
    load_ipython_extension: load_ipython_extension
  }
})