Report.add_report("post_edits") do |report|
  report.category_filtering = true
  report.modes = [:table]

  report.labels = [
    {
      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 = []

  sql = <<~SQL
  WITH period_revisions AS (
  SELECT pr.user_id AS editor_id,
  pr.number AS revision_version,
  pr.created_at,
  pr.post_id,
  u.username AS editor_username,
  u.uploaded_avatar_id as editor_avatar_id
  FROM post_revisions pr
  JOIN users u
  ON u.id = pr.user_id
  WHERE u.id > 0
  AND pr.created_at >= '#{report.start_date}'
  AND pr.created_at <= '#{report.end_date}'
  ORDER BY pr.created_at DESC
  LIMIT 20
  )
  SELECT pr.editor_id,
  pr.editor_username,
  pr.editor_avatar_id,
  p.user_id AS author_id,
  u.username AS author_username,
  u.uploaded_avatar_id AS author_avatar_id,
  pr.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 period_revisions pr
  JOIN posts p
  ON p.id = pr.post_id
  JOIN users u
  ON u.id = p.user_id
  SQL

  if report.category_id
    sql += <<~SQL
    JOIN topics t
    ON t.id = p.topic_id
    WHERE t.category_id = ? OR t.category_id IN (SELECT id FROM categories WHERE categories.parent_category_id = ?)
    SQL
  end
  result = report.category_id ? DB.query(sql, report.category_id, report.category_id) : DB.query(sql)

  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