class ERBLint::Linters::ClosingErbTagIndent

When ‘%>` is preceeded by a newline, indent it at the same level as the corresponding `<%`.
When `<%` isn’t followed by a newline, ensure ‘%>` isn’t preceeded by a newline.

def autocorrect(_processed_source, offense) 

def autocorrect(_processed_source, offense)
  lambda do |corrector|
    corrector.replace(offense.source_range, offense.context)
  end
end

def run(processed_source) 

def run(processed_source)
  processed_source.ast.descendants(:erb).each do |erb_node|
    _, _, code_node, = *erb_node
    code = code_node.children.first
    start_spaces = code.match(START_SPACES)&.captures&.first || ""
    end_spaces = code.match(END_SPACES)&.captures&.first || ""
    start_with_newline = start_spaces.include?("\n")
    end_with_newline = end_spaces.include?("\n")
    if !start_with_newline && end_with_newline
      add_offense(
        code_node.loc.end.adjust(begin_pos: -end_spaces.size),
        "Remove newline before `%>` to match start of tag.",
        " ",
      )
    elsif start_with_newline && !end_with_newline
      add_offense(
        code_node.loc.end.adjust(begin_pos: -end_spaces.size),
        "Insert newline before `%>` to match start of tag.",
        "\n",
      )
    elsif start_with_newline && end_with_newline
      current_indent = end_spaces.split("\n", -1).last
      if erb_node.loc.column != current_indent.size
        add_offense(
          code_node.loc.end.adjust(begin_pos: -current_indent.size),
          "Indent `%>` on column #{erb_node.loc.column} to match start of tag.",
          " " * erb_node.loc.column,
        )
      end
    end
  end
end