require 'sinatra'
require "sinatra/reloader" if development?
require 'twilio-ruby'

enable :sessions

configure :development do
  require 'dotenv'
  Dotenv.load
end

def send_message(mess, num)
  client =  Twilio::REST::Client.new ENV["TWILIO_ACCOUNT_SID"], ENV["TWILIO_AUTH_TOKEN"]
  client.api.account.messages.create(
      from: ENV["TWILIO_FROM"],
      to: num,
      body: mess
  )
end


# Project
def project_block(body, sender)
  if body == 0
    messages = ["Sure! I’m excited to talk about those works!"]
    send_message(messages.sample(), sender)
    messages = ["She was learning industrial design👩‍🎓 in the last 5 years, and also has a touch on UX design, service design, IoT design and so on."]
    send_message(messages.sample(), sender)
    messages = ["Do you have any preference?"]
    send_message(messages.sample(), sender)
    session["next_step"] = "project_link"

# Project --> what kind of project? (-->recommended? -->ID? --> UX?)
elsif session["next_step"] == "project_link"
    if body.include? "id" or body.include? "industrial design"
      messages = ["Good choice! She has a great passion for that. "]
      send_message(messages.sample(), sender)
      sleep 1
      messages = ["🔍..."]
      send_message(messages.sample(), sender)
      messages = ["You would love this: https://wangwanqiao.me/mendes-robot"]
      send_message(messages.sample(), sender)
      # need further revision (
    elsif body.include? "research"
      messages = ["Good choice! She has a great passion for that. "]
      send_message(messages.sample(), sender)
      sleep 1
      messages = ["🔍..."]
      send_message(messages.sample(), sender)
      messages = ["You would love this: https://wangwanqiao.me/mendes-robot"]
      send_message(messages.sample(), sender)
    elsif body.include? "UX" or body.include? "experience"
      messages = ["Good choice! She has a great passion for that. "]
      send_message(messages.sample(), sender)
      sleep 1
      messages = ["🔍..."]
      send_message(messages.sample(), sender)
      messages = ["You would love this: https://wangwanqiao.me/mendes-robot"]
      send_message(messages.sample(), sender)
    elsif body.include? "recent"
      messages = ["Good choice! She has a great passion for that. "]
      send_message(messages.sample(), sender)
      sleep 1
      messages = ["🔍..."]
      send_message(messages.sample(), sender)
      messages = ["You would love this: https://wangwanqiao.me/mendes-robot"]
      send_message(messages.sample(), sender)

    else
      messages = ["No problem! Let me find my favorite one for you👀"]
      send_message(messages.sample(), sender)
        sleep(1)
      messages = ["Here it is！ https://wangwanqiao.me/greenexchanger"]
      send_message(messages.sample(), sender)
      messages = ["This one is a IPD project last Winter, which could reflect her comprehensive skills. "]
      send_message(messages.sample(), sender)
    end
    # )
    sleep(3)
    messages = ["Enjoy the time😊! Feel free to come back and leave a comment"]
    send_message(messages.sample(), sender)
    session["next_step"] = "comment"

# Project --> what kind of project? --> leave comments
elsif session["next_step"] == "comment"
    messages = ["Gotcha!", "Love to hear that!","Great!"]
    send_message(messages.sample(), sender)
    messages = ["Anything else are you interested about her?"]
    send_message(messages.sample(), sender)
    session["block"] = "transition"
  end
end


# Skill
def skill_block(body, sender)
  if body == 0
    messages = ["Sure"]
    send_message(messages.sample(), sender)
    messages = ["She mostly focuses on Human-Centered-Design"]
    send_message(messages.sample(), sender)
    messages = ["Any specific skill or software?"]
    send_message(messages.sample(), sender)
    session["next_step"] = "specific"

# Skill --> What kind of skill?
  elsif session["next_step"] == "specific"
    if body.include? "yes"
      messages = ["which one do you want to know first?"]
      send_message(messages.sample(), sender)
      return
    elsif body.include? "no"
      session["skill"] = "ux"
      messages = ["She has skills of wireframing, storyboarding, Usability Test, and so on."]
      send_message(messages.sample(), sender)
      sleep(3)
      messages = ["Want to check the project that would best show this skill?"]
      send_message(messages.sample(), sender)
      session["next_step"] = "check_project"
    else
      if body.include? "id" or body.include? "..."
        session["skill"] = "id"
        messages = ["skill 1"]
        send_message(messages.sample(), sender)
        delay(3)
        messages = ["Want to check the project that would best show this skill?"]
        send_message(messages.sample(), sender)
        session["next_step"] = "check_project"
      elsif body.include? "ux"
        session["skill"] = "ux"
        messages = ["skill 2"]
        send_message(messages.sample(), sender)
        delay(3)
        messages = ["Want to check the project that would best show this skill?"]
        send_message(messages.sample(), sender)
        session["next_step"] = "check_project"
      elsif body.include? "research"
        session["skill"] = "research"
        messages = ["Good one! That is quite essential in her design work. "]
        send_message(messages.sample(), sender)
        messages = ["She conducted in-depth interviews, shadowing, co-design sessions to learn more about the users in her projects. "]
        send_message(messages.sample(), sender)
        messages = ["Also, she was exposed to some new method such as data-enable design in her intern experience."]
        send_message(messages.sample(), sender)
        delay(3)
        messages = ["Want to check the project that would best show this skill?"]
        send_message(messages.sample(), sender)
        session["next_step"] = "check_project"
      else
        messages = ["still learning that..."]
        send_message(messages.sample(), sender)
        messages = ["Maybe...try another one?"]
        send_message(messages.sample(), sender)
      end

    end

# Skill --> What kind of skill? --> check project?
  elsif session["next_step"] == "check_project"
    if body.include? "yes"
      send_project(session["skill"], sender)
      sleep(3)
      messages = ["enjoy the time, feel free to come back and leave a comment"]
      send_message(messages.sample(), sender)
      session["block"] = "project"
      session["next_step"] = "comment"
    elsif body.include? "no"
      messages = ["what else are you interested about her?"]
      send_message(messages.sample(), sender)
      session["block"] = "transition"
    else
      help_block(sender)
    end
  end
end


def resume_block(body, sender)
  if body == 0
    messages = ["Emmmm🤔"]
    send_message(messages.sample(), sender)
    sleep (1)
    messages = ["Not sure if I could help you see that in her portfolio."]
    send_message(messages.sample(), sender)
    messages = ["Maybe have a quick scan on her resume?"]
    send_message(messages.sample(), sender)
    link = "https://wangwanqiao.me/resume"
    send_message(link, sender)
    sleep(3)
    messages = ["does it help?"]
    send_message(messages.sample(), sender)
    session["next_step"] = "helpful"

  elsif session["next_step"] == "helpful"
    if body.include? "yes" or body.include? "y"
      messages = ["do you want to know sth. else about the project or skills?"]
      send_message(messages.sample(), sender)
      session["block"] = "greeting"
    elsif body.include? "no"
      messages = ["Please leave a message here! She will check it out and get better with your comment!"]
      send_message(messages.sample(), sender)
      messages = ["Or you could directly email her to wanqiaow@andrew.cmu.edu"]
      send_message(messages.sample(), sender)
      session["next_step"] = "email"
    else
      help_block(sender)
    end
  elsif session["next_step"] == "email"
    messages = ["Do you want to leave your address here. That would be a great connection!"]
    send_message(messages.sample(), sender)
    session["next_step"] = "check_email"
  elsif session["next_step"] == "check_email"
    if body.include? "@"
      messages = ["got that! She will soon reply! Enjoy your time here☕"]
      send_message(messages.sample(), sender)
    end

    messages = ["Glad talk to you! Enjoy your time here☕"]
    send_message(messages.sample(), sender)
    session["block"] = "terminated"
  end
end

def help_block(sender)
  messages = ["sorry i don't know what you're talking about"]
  send_message(messages.sample(), sender)
end

get "/" do
  "hi, there!"
end

get "/signup/:first_name/:number" do
  session["first_name"] = params["first_name"]
  session["number"] = params["number"]
  session["block"] = "greeting"

  client = Twilio::REST::Client.new ENV["TWILIO_ACCOUNT_SID"], ENV["TWILIO_AUTH_TOKEN"]
  # TODO: message
  # message = "Hi " + params[:first_name] + greetings.sample() + ", welcome to Wanqiao's portfolio! Thanks to your visit! What do you want to take a look first? project or skill?"
  message = "Hi👋, welcome to Wanqiao’s portfolio! "
  client.api.account.messages.create(
    from: ENV["TWILIO_FROM"],
    to: params[:number],
    body: message
  )

  message = "I’m your assistant here. I could help you getting to know more about her projects📂, work experience📋 and professional skills⚒."
  send_message(message, session["number"])
  message = "What do you want to know more about first?"
  send_message(message, session["number"])
end

get "/sms/incoming" do
  body = params[:Body] || ""
  sender = params[:From] || ""
  body = body.downcase.strip

  session["block"] ||= "greeting"

  if session["block"] == "terminated"
    session["block"] = "greeting"
  end


  case session["block"]
  when "greeting"

    if body.include? "project" or body.include? "..."
      session["block"] = "project"
      project_block(0, sender)

    elsif body.include? "skill"
      session["block"] = "skill"
      skill_block(0, sender)

    elsif body.include? "yes"
      messages = ["project or skill?"]
      send_message(messages.sample(), sender)

    elsif body.include? "no"
      messages = ["Hope it is helpful!🙌"]
      send_message(messages.sample(), sender)
      session["block"] = "resume"
      session["next_step"] = "email"
    else
      send_message("body error", sender)
      help_block(sender)
    end

  when "project"
    project_block(body, sender)

  when "skill"
    skill_block(body, sender)

# What else?
  when "transition"
    if body.include? "project" or body.include? "..."
      session["block"] = "project"
      project_block(0, sender)
    elsif body.include? "skill"
      session["block"] = "skill"
      skill_block(0, sender)
    elsif body.include? "no"
      messages = ["glad to talk to you"]
      send_message(messages.sample(), sender)
      session["block"] = "terminated"
    else
      session["block"] = "resume"
      resume_block(0, sender)
    end

  when "resume"
    resume_block(body, sender)

  when "terminated"
    messages = ["please sign in again to restart"]
    send_message(messages.sample(), sender)

  else
    help_block(sender)
  end
end