class BasilController < ApplicationController
  before_action :authenticate_user!, except: [:complete_commission, :about, :stats]

  before_action :require_admin_access, only: [:review], unless: -> { Rails.env.development? }

  def index
    @enabled_content_types = [Character, Location].map(&:name)

    @content_type = params[:content_type].try(:humanize) || 'Character'
    if @content_type.nil? || !@enabled_content_types.include?(@content_type)
      return raise "Invalid content type: #{params[:content_type]}"
    end

    @content = @current_user_content[@content_type].sort_by(&:name)
  end

  def content
    # Fetch the content page from our already-queried cache of current user content
    @content_type = params[:content_type].humanize
    @content      = @current_user_content[@content_type].detect do |page|
      page.id == params[:id].to_i
    end
    raise "No content found for #{params[:content_type]} with ID #{params[:id]} for user #{current_user.id}" if @content.nil?

    # Fetch any existing Basil configurations/guidance for this character
    @guidance   = BasilFieldGuidance.find_or_initialize_by(entity: @content, user: current_user).try(:guidance)
    @guidance ||= {}

    # Fetch all the related fields for this content type and their values
    # and format them into an array of [field, value] pairs to pass to the view
    @relevant_fields = []
    
    case @content_type
    when 'Character'
      @relevant_fields.push BasilService.include_specific_field(current_user, @content, 'Overview', 'Gender')
      @relevant_fields.push BasilService.include_specific_field(current_user, @content, 'Overview', 'Age')
      @relevant_fields.push *BasilService.include_all_fields_in_category(current_user, @content, ['Looks', 'Appearance'])

    when 'Location'
      @relevant_fields.push BasilService.include_specific_field(current_user, @content, 'Overview', 'Name')
      @relevant_fields.push BasilService.include_specific_field(current_user, @content, 'Overview', 'Type')
      @relevant_fields.push BasilService.include_specific_field(current_user, @content, 'Overview', 'Description')
      @relevant_fields.push BasilService.include_specific_field(current_user, @content, 'Geography', 'Area')
      @relevant_fields.push BasilService.include_specific_field(current_user, @content, 'Geography', 'Climate')

    end
    @relevant_fields.compact!

    # Finally, cache some state we can reference in the view
    @commissions = BasilCommission.where(entity_type: @content.page_type, entity_id: @content.id)
                                  .order('id DESC')
                                  .limit(20)
                                  .includes(:basil_feedbacks)
    @in_progress_commissions = @commissions.select { |c| c.completed_at.nil? }
    @can_request_another     = @in_progress_commissions.count < 3
  end

  def character
    @character  = current_user.characters.find(params[:id])
    @guidance   = BasilFieldGuidance.find_or_initialize_by(entity: @character, user: current_user).try(:guidance)
    @guidance ||= {}

    category_ids = AttributeCategory.where(
      user_id: current_user.id,
      entity_type: 'character',
      label: ['Looks', 'Appearance']
    ).pluck(:id)
    @appearance_fields = AttributeField.where(attribute_category_id: category_ids)
    @attributes = Attribute.where(
      attribute_field_id: @appearance_fields.pluck(:id), 
      entity_id: @character.id, 
      entity_type: 'Character'
    )

    @commissions = BasilCommission.where(entity_type: 'Character', entity_id: @character.id)
                                  .order('id DESC')
                                  .limit(20)
                                  .includes(:basil_feedbacks)
    @in_progress_commissions = BasilCommission.where(entity_type: 'Character', entity_id: @character.id, completed_at: nil)
    @can_request_another = @in_progress_commissions.count < 3
  end

  def about
  end

  def stats
    @commissions = BasilCommission.all

    @queued = BasilCommission.where(completed_at: nil)
    @completed = BasilCommission.where.not(completed_at: nil)

    @average_wait_time = @completed.where('completed_at > ?', 24.hours.ago)
                                   .average(:cached_seconds_taken)
    @seconds_over_time = @completed.where('completed_at > ?', 24.hours.ago)
                                   .group_by { |c| ((c.cached_seconds_taken || 0) / 60).round }
                                   .map { |minutes, list| [minutes, list.count] }

    # Projected date, at our current rate, to reach 1,000,000 images
    commission_counts_per_day   = @commissions.group_by_day(:completed_at).values
    @average_commissions_per_day = commission_counts_per_day.sum(0.0) / commission_counts_per_day.count
    commissions_left            = 1_000_000 - @commissions.count
    @days_til_1_million_commissions = commissions_left / @average_commissions_per_day

    # Feedback today
    @feedback_today = BasilFeedback.where('updated_at > ?', 24.hours.ago)
                                   .order(:score_adjustment)
                                   .group(:score_adjustment)
                                   .count
    total = @feedback_today.values.sum
    @emoji_counts_today = @feedback_today.map do |score, count|
      emoji = case score
        when -2 then "Very Bad :'("
        when -1 then "Bad :("
        when  0 then "Meh :|"
        when  1 then "Good :)"
        when  2 then "Very Good :D"
        when  3 then "Lovely! <3"
      end
      [emoji, (count / total.to_f * 100).round(1)]
    end

    # Feedback all time
    @feedback_before_today = BasilFeedback.where('updated_at < ?', 24.hours.ago)
                                      .order(:score_adjustment)
                                      .group(:score_adjustment)
                                      .count
    days_since_start = (Date.current - BasilFeedback.minimum(:updated_at).to_date)
    days_since_start = 1 if days_since_start.zero? # no dividing by 0 lol

    total = @feedback_before_today.values.sum
    @emoji_counts_all_time = @feedback_before_today.map do |score, count|
      emoji = case score
        when -2 then "Very Bad :'("
        when -1 then "Bad :("
        when  0 then "Meh :|"
        when  1 then "Good :)"
        when  2 then "Very Good :D"
        when  3 then "Lovely! <3"
      end

      [emoji, (count / total.to_f * 100).round(1)]
    end

    active_styles = [
      BasilService.enabled_styles_for('Character'),
      BasilService.enabled_styles_for('Location'),
      # Also include anything we specifically want to track for now :)
      'painting2', 'painting3', 'anime'
    ].flatten.compact.uniq

    @total_score_per_style = BasilCommission.where(style: active_styles)
                                              .joins(:basil_feedbacks)
                                              .group(:style)
                                              .sum(:score_adjustment)
                                              .map { |style, average| [style, average.round(1)] }
                                              .sort_by(&:second)
                                              .reverse
    @average_score_per_style = BasilCommission.where(style: active_styles)
                                              .joins(:basil_feedbacks)
                                              .group(:style)
                                              .average(:score_adjustment)
                                              .map { |style, average| [style, average.round(1)] }
                                              .sort_by(&:second)
                                              .reverse

    @average_score_per_page_type = BasilCommission.where.not(completed_at: nil)
                                                  .joins(:basil_feedbacks)
                                                  .group(:entity_type)
                                                  .average(:score_adjustment)
                                                  .map { |k, v| [k, (v * 100).round(1)] }.to_h

    # queue size (total commissions - completed commissions)
    # average time to complete today / this week
    # commissions per day bar chart
    # count(average time to complete) bar chart
  end

  def review
    @recent_commissions = BasilCommission.all.includes(:entity, :user).order('id DESC').limit(100)
  end

  def commission
    # Fetch the related content
    @content = @current_user_content[commission_params.fetch(:entity_type)]
                  .find { |c| c.id == commission_params.fetch(:entity_id).to_i }
    return raise "Invalid content commission params" if @content.nil?

    # Before creating the prompt, do a little config to tweak things to work well :)
    labels_to_omit_label_text = [
      "Name",
      "Identifying Marks",
      "Type",
      "Description"
    ].map(&:downcase)
    field_importance_multipliers = {
      'hair':       1.15,
      'hair color': 1.55,
      'hair style': 1.10,
      'skin tone':  1.05,
      'race':       1.10,
      'eye color':  1.05,
      'gender':     1.15
    }
    label_value_pairs_to_skip_entirely = [
      ['race', 'human']
    ]
    value_suffix_for_numerical_fields = {
      'age': ' years old'
    }

    # Prepare our prompt components
    prompt_components = []
    commission_params.fetch(:field).each do |field_id, field_data|
      label      = field_data[:label].strip
      value      = field_data[:value].gsub(',',  '')
                                     .gsub("\r", '')
                                     .gsub('(',  '')
                                     .gsub(')',  '')
                                     .gsub("\n", ' ')
                                     .strip
      importance = field_data[:importance].to_f

      # Field skips
      next if label_value_pairs_to_skip_entirely.include?([label.downcase, value.downcase])

      # Do any per-field manipulations
      importance *= field_importance_multipliers[label.downcase.to_sym]      if field_importance_multipliers.key?(label.downcase.to_sym)
      value      += value_suffix_for_numerical_fields[label.downcase.to_sym] if value_suffix_for_numerical_fields.key?(label.downcase.to_sym)
      label       = ''                                                       if labels_to_omit_label_text.include?(label.downcase)

      # Finally, cut down on any unnecessary precision to save more tokens
      importance = importance.round(2)

      component_text = "#{value} #{label}".strip
      if importance == 1.0
        # If the importance is exactly 1, we can omit the parentheses and save a few tokens, since the
        # default attention importance is 1.
        prompt_components.push "#{component_text}"
      elsif importance != 0
        # If the importance isn't 1 (default) or 0 (not included), we want to specify it in the prompt.
        prompt_components.push "(#{component_text}:#{importance})"
      end
    end

    # Build a prompt for Basil from the component parts
    prompt = prompt_components.join(', ')

    # Save our field weights as the latest guidance also
    guidance = BasilFieldGuidance.find_or_initialize_by(entity_type: @content.page_type,
                                                        entity_id:   @content.id,
                                                        user:        current_user)
    guidance_data = commission_params.fetch(:field)
                                     .transform_values { |data| data[:importance].to_f }
                                     .to_h
    guidance.update(guidance: guidance_data)

    BasilCommission.create!(
      user:        current_user,
      entity_type: @content.page_type,
      entity_id:   @content.id,
      prompt:      prompt,
      style:       commission_params.fetch(:style, 'realistic'),
      job_id:      SecureRandom.uuid
    )

    redirect_to basil_content_path(@content.page_type, @content.id)
  end

  def complete_commission
    commission = BasilCommission.find_by(job_id: params[:jobid])
    return if commission.nil?

    commission.update(completed_at:   DateTime.current,
                      final_settings: JSON.parse(params[:settings]))

    commission.cache_after_complete!

    # TODO: we should attach the S3 object to the commission.image attachment
    # but I dunno how to do that yet. See broken attempts below.

    # s3 = Aws::S3::Resource.new(region: "us-east-1")
    # obj = s3.bucket("basil-characters").object("job-#{params[:jobid]}.png")
    # blob_params = {
    #   filename: File.basename(obj.key), 
    #   content_type: obj.content_type, 
    #   byte_size: obj.size, 
    #   checksum: obj.etag.gsub('"',"")
    # }
    # raise "wow"
    # blob = ActiveStorage::Blob.create_before_direct_upload!(**blob_params)

    # # By default, the blob's key (S3 key, in this case) a secure (random) token
    # # However, since the file is already on S3, we need to change the 
    # # key to match our file on S3
    # blob.update_attribute :key, obj.key

    # raise params.inspect

    render json: { success: true }
  end

  def feedback
    commission = BasilCommission.find_by(job_id: params[:jobid])
    score_adjustment = params[:basil_feedback][:score_adjustment].to_i
    score_adjustment = score_adjustment.clamp(-3, 3)

    feedback = commission.basil_feedbacks.find_or_initialize_by(user: current_user)
    feedback.update!(score_adjustment: score_adjustment)
  end

  def help_rate
    # Commissions without feedback:
    @reviewed_commission_ids = BasilFeedback.where(user: current_user)
                                           .pluck(:basil_commission_id)
    @commissions = BasilCommission.where.not(id: @reviewed_commission_ids)
                                  .where.not(completed_at: nil)
                                  .where(user: current_user)
                                  .order(created_at: :desc)
                                  .limit(50)
                                  .includes(:entity)
                                  .shuffle
  end

  private

  def commission_params
    params.require(:basil_commission).permit(:style, :entity_type, :entity_id, field: {})
  end
end