# frozen_string_literal: true

module Reports::PostEdits
  extend ActiveSupport::Concern

  class_methods do
    def report_post_edits(report)
      category_id, include_subcategories = report.add_category_filter
      editor_username = report.filters['editor']

      report.modes = [:table]

      report.labels = [
        {
          type: :date,
          property: :created_at,
          title: I18n.t("reports.post_edits.labels.edited_at")
        },
        {
          type: :post,
          properties: {
            topic_id: :topic_id,
            number: :post_number,
            truncated_raw: :post_raw
          },
          title: I18n.t("reports.post_edits.labels.post")
        },
        {
          type: :user,
          properties: {
            username: :editor_username,
            id: :editor_id,
            avatar: :editor_avatar_template,
          },
          title: I18n.t("reports.post_edits.labels.editor")
        },
        {
          type: :user,
          properties: {
            username: :author_username,
            id: :author_id,
            avatar: :author_avatar_template,
          },
          title: I18n.t("reports.post_edits.labels.author")
        },
        {
          type: :text,
          property: :edit_reason,
          title: I18n.t("reports.post_edits.labels.edit_reason")
        },
      ]

      report.data = []

      builder = DB.build <<~SQL
      SELECT
        pr.user_id AS editor_id,
        editor.username AS editor_username,
        editor.uploaded_avatar_id AS editor_avatar_id,
        p.user_id AS author_id,
        author.username AS author_username,
        author.uploaded_avatar_id AS author_avatar_id,
        pr.number AS revision_version,
        p.version AS post_version,
        pr.post_id,
        LEFT(p.raw, 40) AS post_raw,
        p.topic_id,
        p.post_number,
        p.edit_reason,
        pr.created_at
      FROM post_revisions pr
      JOIN posts p
        ON p.id = pr.post_id
      JOIN users author
        ON author.id = p.user_id
      JOIN users editor
        ON editor.id = pr.user_id
      /*join*/
      /*where*/
      ORDER BY pr.created_at ASC
      /*limit*/
      SQL

      if category_id
        builder.join "topics t ON t.id = p.topic_id"
        if include_subcategories
          builder.where("t.category_id IN (?)", Category.subcategory_ids(category_id))
        else
          builder.where("t.category_id = ?", category_id)
        end
      end

      if editor_username
        builder.where("editor.username = ?", editor_username)
      else
        builder.where("editor.id > 0 AND editor.id != author.id")
      end

      builder.where("pr.created_at >= :start_date", start_date: report.start_date)
      builder.where("pr.created_at <= :end_date", end_date: report.end_date)

      result = builder.query

      result.each do |r|
        revision = {}
        revision[:editor_id] = r.editor_id
        revision[:editor_username] = r.editor_username
        revision[:editor_avatar_template] = User.avatar_template(r.editor_username, r.editor_avatar_id)
        revision[:author_id] = r.author_id
        revision[:author_username] = r.author_username
        revision[:author_avatar_template] = User.avatar_template(r.author_username, r.author_avatar_id)
        revision[:edit_reason] = r.revision_version == r.post_version ? r.edit_reason : nil
        revision[:created_at] = r.created_at
        revision[:post_raw] = r.post_raw
        revision[:topic_id] = r.topic_id
        revision[:post_number] = r.post_number

        report.data << revision
      end
    end
  end
end