#
# Post or edit a report or resolution
#
# For new resolutions, allow entry of title, but not commit message
# For everything else, allow modification of commit message, but not title

class Post < Vue
  def initialize
    @button = @@button.text
    @disabled = false
    @alerted = false
    @edited = false
    @pmcs = []
    @roster = []
    @parent = nil
  end

  # default attributes for the button associated with this form
  def self.button
    {
      text: 'post report',
      class: 'btn_primary',
      disabled: Server.offline,
      data_toggle: 'modal',
      data_target: '#post-report-form'
    }
  end

  def render
    _ModalDialog.wide_form.post_report_form! color: 'commented' do
      if @button == 'add item'
        _h4 'Select Item Type'

        _ul.new_item_type do
          _li do
            _button.btn.btn_primary 'Change Chair', onClick: selectItem
            _ '- change chair for an existing PMC'
          end

          _li do
            _button.btn.btn_primary 'Establish Project', onClick: selectItem
            _ '- direct to TLP project and subproject to TLP'
          end

          _li do
            _button.btn.btn_primary 'Terminate Project', onClick: selectItem
            _ '- move a project to the attic'
          end

          _li do
            _button.btn.btn_primary 'New Resolution', onClick: selectItem
            _ '- free form entry of a new resolution'
          end

          _li do
            _button.btn.btn_info 'Out of Cycle Report', onClick: selectItem
            _ '- report from a PMC not currently on the agenda for this month'
          end

          _li do
            _button.btn.btn_success 'Discussion Item', onClick: selectItem
            _ '- add a discussion item to the agenda'
          end
        end

        _button.btn_default 'Cancel', data_dismiss: 'modal'

      elsif @button == 'Change Chair'
        _h4 'Change Chair Resolution'

        _div.form_group do
          _label 'PMC', for: 'change-chair-pmc'
          _select.form_control.change_chair_pmc!(
            onChange: ->(event) {chair_pmc_change(event.target.value)}
          ) do
            @pmcs.each {|pmc| _option pmc}
          end
        end

        _div.form_group do
          _label 'Outgoing Chair', for: 'outgoing-chair'
          _input.form_control.outgoing_chair! value: @outgoing_chair,
            disabled: true
        end

        _div.form_group do
          _label 'Incoming Chair', for: 'incoming-chair'
          _select.form_control.incoming_chair! do
            @pmc_members.each do |person|
              _option person.name, value: person.id,
                selected: person.id == User.id
            end
          end
        end

        _button.btn_default 'Cancel', data_dismiss: 'modal'
        _button.btn_primary 'Draft', disabled: @disabled,
          onClick: draft_chair_change_resolution

      elsif @button == 'Establish Project'
        _h4 'Establish Project Resolution'

        _div.form_group do
          _label 'PMC name', for: 'establish-pmc'
          _input.form_control.establish_pmc! value: @pmcname
        end

        _div.form_group do
          # capitalize pmcname
          pmcname = @pmcname
          if @pmcname and @pmcname !~ /[A-Z]/
            pmcname.gsub!(/\b\w/) {|c| c.upcase()}
          end

          _label 'Complete this sentence:', for: 'establish-description'
          _ " Apache #{pmcname} consists of software related to" if pmcname

          _textarea.form_control.establish_description! value: @pmcdesc,
            disabled: !pmcname
        end

        _div.form_group do
          _label 'Parent PMC name (if applicable)', for: 'parent-pmc'
          _select.form_control.parent_pmc!(
            onChange: ->(event) {parent_pmc_change(event.target.value)}
          ) do
            _option '-- none --', value: '', selected: true
            @pmcs.each {|pmc| _option pmc unless pmc == 'incubator'}
          end
        end

        if @chair
          _div.form_group do
            _label "Chair: #{@chair.name}"
          end
        end

        _label 'Initial set of PMC members'

        _p do
          if !@chair
              _ 'Search for the chair '
          else
              _ 'Search for additional PMC members '
          end
          _ 'using the search box below, and select '
          _ 'the desired name using the associated checkbox'
        end

        @pmc.each do |person|
          _div.form_check do
            _input.form_check_input type: 'checkbox', checked: true,
              value: person.id, id: "person_#{person.id}"
            _label.form_check_label person.name, for: "person_#{person.id}"
          end
        end

        _input.form_control value: @search, placeholder: 'search'

        if @search.length >= 3 and Server.committers
          search = @search.downcase().split(' ')
          Server.committers.each do |person|
            if
              search.all? {|part|
                person.id.include? part or
                person.name.downcase().include? part
              } \
                and
              not @pmc.include? person
            then
              _div.form_check key: person.id do
                _input.form_check_input type: 'checkbox',
                  id: "person_#{person.id}",
                  onClick: -> {establish_pmc(person)}
                _label.form_check_label person.name,
                  for: "person_#{person.id}"
              end
            end
          end
        elsif @search.length == 0 and @roster and not @roster.empty?
          @roster.each do |person|
            unless @pmc.include? person
              _div.form_check key: person.id do
                _input.form_check_input type: 'checkbox',
                  id: "person_#{person.id}",
                  onClick: -> {establish_pmc(person)}
                _label.form_check_label person.name,
                  for: "person_#{person.id}"
              end
            end
          end
        end

        _button.btn_default 'Cancel', data_dismiss: 'modal'
        _button.btn_primary 'Draft', onClick: draft_establish_project,
          disabled: (!@pmcname or !@pmcdesc or @pmc.empty?)

      elsif @button == 'Terminate Project'
        _h4 'Terminate Project Resolution'

        _div.form_group do
          _label 'PMC', for: 'terminate-pmc'
          _select.form_control.terminate_pmc! do
            @pmcs.each {|pmc| _option pmc}
          end
        end

        _p 'Reason for termination:'

        _div.form_check do
          _input.form_check_input.termvote! type: 'radio', name: 'termreason',
            onClick: -> {@termreason = 'vote'}
          _label.form_check_label 'by vote of the PMC', for: 'termvote'
        end

        _div.form_check do
          _input.form_check_input.termconsensus! type: 'radio',
            name: 'termreason', onClick: -> {@termreason = 'consensus'}
          _label.form_check_label 'by consensus of the PMC',
            for: 'termconsensus'
        end

        _div.form_check do
          _input.form_check_input.termboard! type: 'radio',
            name: 'termreason', onClick: -> {@termreason = 'board'}
          _label.form_check_label 'by the board for inactivity',
            for: 'termboard'
        end

        _button.btn_default 'Cancel', data_dismiss: 'modal'
        _button.btn_primary 'Draft', onClick: draft_terminate_project,
          disabled: (@pmcs.empty? or not @termreason)

      elsif @button == 'Out of Cycle Report'
        _h4 'Out of Cycle PMC Report'

        # determine which PMCs are reporting this month
        reporting_this_month = []
        Agenda.index.each do |item|
          if item.roster and item.attach =~ /^[A-Z]+$/
            reporting_this_month << item.roster.split('/').pop()
          end
        end

        # provide a selection box with the remainder
        _div.form_group do
          _label 'PMC', for: 'out-of-cycle-pmc'
          _select.form_control.out_of_cycle_pmc! do
            @pmcs.each do |pmc|
              _option pmc unless reporting_this_month.include? pmc
            end
          end
        end

        _button.btn_default 'Cancel', data_dismiss: 'modal'
        _button.btn_primary 'Draft', disabled: @pmcs.empty?,
          onClick: draft_out_of_cycle_report

      else

        _h4 @header

        #input field: title
        if @header == 'Add Resolution' or @header == 'Add Discussion Item'
          _input.post_report_title! label: 'title', disabled: @disabled,
            placeholder: 'title', value: @title, onFocus: self.default_title
        end

        #input field: report text
        _textarea.post_report_text! label: @label, value: @report,
          placeholder: @label, rows: 17, disabled: @disabled,
          onInput: self.change_text

        # upload of spreadsheet from virtual
        if @@item.title == 'Treasurer'
          _form do
            _div.form_group do
              _label 'financial spreadsheet from virtual', for: 'upload'
              _input.upload! type: 'file', value: @upload
              _button.btn.btn_primary 'Upload', onClick: upload_spreadsheet,
                disabled: @disabled || !@upload
            end
          end
        end

        #input field: commit_message
        if @header != 'Add Resolution' and @header != 'Add Discussion Item'
          _input.post_report_message! label: 'commit message',
            disabled: @disabled, value: @message
        end

        # footer buttons
        _button.btn_default 'Cancel', data_dismiss: 'modal'
        _button 'Reflow', class: self.reflow_color(), onClick: self.reflow
        _button.btn_primary 'Submit', onClick: self.submit,
          disabled: (not self.ready())
      end
    end
  end

  # add item menu support
  def selectItem(event)
    @button = event.target.textContent

    if @button == 'Change Chair'
      initialize_chair_change()
    elsif @button == 'Establish Project'
      initialize_establish_project()
    elsif @button == 'Terminate Project'
      initialize_terminate_project()
    elsif @button == 'Out of Cycle Report'
      initialize_out_of_cycle()
    end

    retitle()
  end

  # autofocus on report/resolution title/text
  def mounted()
    jQuery('#post-report-form').on 'show.bs.modal' do
      # update contents when modal is about to be shown
      @button = @@button.text
      self.retitle()
    end

    jQuery('#post-report-form').on 'shown.bs.modal' do
      reposition()
    end
  end

  # reposition after update if header changed
  def updated()
    reposition() if Post.header != @header
  end

  # set focus, scroll
  def reposition()
    # set focus once modal is shown
    title = document.getElementById('post-report-title')
    text = document.getElementById('post-report-text')

    if title || text
      (title || text).focus()

      # scroll to the top
      setTimeout 0 do
        text.scrollTop = 0 if text
      end
    end

    Post.header = @header
  end

  # initialize form title, etc.
  def created()
    self.retitle()
  end

  # match form title, input label, and commit message with button text
  def retitle()
    @report = nil
    parent_pmc_change(nil)

    case @button
    when 'post report'
      @header = 'Post Report'
      @label = 'report'
      @message = "Post #{@@item.title} Report"

      # if by chance the report was posted to board@, attempt to fetch
      # the text/plain version of the body
      posted = Posted.get(@@item.title)
      unless posted.empty?
        post 'posted-reports', path: posted.last.path do |response|
          @report ||= response.text
        end
      end

      # if there is a draft being prepared at reporter.apache.org, use it
      draft = Reporter.find(@@item)
      @report = draft.text if draft

    when 'edit item'
      @header = 'Edit Discussion Item'
      @label = 'text'
      @message = "Edit #{@@item.title} Discussion Item"

    when 'edit report'
      @header = 'Edit Report'
      @label = 'report'
      @message = "Edit #{@@item.title} Report"

    when 'add resolution', 'New Resolution'
      @header = 'Add Resolution'
      @label = 'resolution'
      @title = ''

    when 'edit resolution'
      @header = 'Edit Resolution'
      @label = 'resolution'
      @title = ''

    when 'post item', 'Discussion Item'
      @header = 'Add Discussion Item'
      @label = 'text'
      @message = 'Add Discussion Item'

    when 'post items'
      @header = 'Post Discussion Items'
      @label = 'text'
      @message = 'Post Discussion Items'

    when 'edit items'
      @header = 'Edit Discussion Items'
      @label = 'text'
      @message = 'Edit Discussion Items'
    end

    if not @edited
      text = @report || @@item.text || ''
      if @@item.title == 'President'
        text.sub! /\s*Additionally, please see Attachments \d through \d\d?\./, ''
      end

      @report = text
      @digest = @@item.digest
      @alerted = false
      @edited = false
      @base = @report
    elsif not @alerted and @edited and @digest != @@item.digest
      alert 'edit conflict'
      @alerted = true
    else
      @report = @base
    end

    if @header == 'Add Resolution' or @@item.attach =~ /^[47]/
      @indent = '        '
    elsif @header == 'Add Discussion Item'
      @indent = '        '
    elsif @@item.attach == '8.'
      @indent = '    '
    else
      @indent = ''
    end
  end

  # default title based on common resolution patterns
  def default_title(event)
    return if @title
    match = nil

    if (match = @report.match(/to\s+be\s+known\s+as\s+the\s+"Apache\s+(.*?)\s+Project",\s+be\s+and\s+hereby\s+is\s+established/))
      @title = "Establish the Apache #{match[1]} Project"
    elsif (match = @report.match(/appointed\s+to\s+the\s+office\s+of\s+Vice\s+President,\s+Apache\s+(.*?),/))
      @title = "Change the Apache #{match[1]} Project Chair"
    elsif (match = @report.match(/the\s+Apache\s+(.*?)\s+project\s+is\s+hereby\s+terminated/))
      @title = "Terminate the Apache #{match[1]} Project"
    end
  end

  # track changes to text value
  def change_text(event)
    @report = event.target.value
    self.change_message()
  end

  # update default message to reflect whether only whitespace changes were
  # made or if there is something more that was done
  def change_message()
    @edited = (@base != @report)

    if @message =~ /(Edit|Reflow) #{@@item.title} Report/
      if @edited and @base.gsub(/[ \t\n]+/, '') == @report.gsub(/[ \t\n]+/, '')
         @message = "Reflow #{@@item.title} Report"
      else
         @message = "Edit #{@@item.title} Report"
      end
    end
  end

  # determine if reflow button should be default or danger color
  def reflow_color()
    width = 80 - @indent.length

    if @report.split("\n").all? {|line| line.length <= width}
      return 'btn-default'
    else
      return'btn-danger'
    end
  end

  # perform a reflow of report text
  def reflow()
    report = @report
    textarea = document.getElementById('post-report-text')
    indent = start = finish = 0

    # extract selection (if any)
    if textarea and textarea.selectionEnd > textarea.selectionStart
      start = textarea.selectionStart
      start -= 1  while start > 0 and report[start-1] != "\n"
      finish = textarea.selectionEnd
      finish += 1 while report[finish] != "\n" and finish < report.length-1
    end

    # enable special punctuation rules for the incubator
    puncrules = (@@item.title == 'Incubator')

    # reflow selection or entire report
    if finish > start
      report = Flow.text(report[start..finish], @indent+indent, puncrules)
      report.gsub(/^/, ' ' * indent) if indent > 0
      @report = @report[0...start] + report + @report[finish+1..-1]
    else
      # remove indentation
      unless report =~ /^\S/
        regex = RegExp.new('^( +)', 'gm')
        indents = []
        while (result = regex.exec(report))
          indents.push result[1].length
        end
        unless indents.empty?
          indent = Math.min(*indents)
          report.gsub!(RegExp.new('^' + ' ' * indent, 'gm'), '')
        end
      end

      @report = Flow.text(report, @indent, puncrules)
    end

    self.change_message()
  end

  # determine if the form is ready to be submitted
  def ready()
    return false if @disabled

    if @header == 'Add Resolution' or @header == 'Add Discussion Item'
      return @report != '' && @title != ''
    else
      return @report != @@item.text && @message != ''
    end
  end

  # when save button is pushed, post comment and dismiss modal when complete
  def submit(event)
    @edited = false

    if @header == 'Add Resolution' or @header == 'Add Discussion Item'
      data = {
        agenda: Agenda.file,
        attach: (@header == 'Add Resolution') ? '7?' : '8?',
        title: @title,
        report: @report
      }
    else
      data = {
        agenda: Agenda.file,
        attach: @attach || @@item.attach,
        digest: @digest,
        message: @message,
        report: @report
      }
    end

    @disabled = true
    post 'post', data do |response|
      jQuery('#post-report-form').modal(:hide)
      document.body.classList.remove('modal-open')
      @attach = nil
      @disabled = false
      Agenda.load response.agenda, response.digest
    end
  end

  #########################################################################
  #                                Treasurer                              #
  #########################################################################

  # upload contents of spreadsheet in base64; append extracted table to report
  def upload_spreadsheet(event)
    @disabled = true
    event.preventDefault()

    reader = FileReader.new
    def reader.onload(event)
      # Convert the spreadsheet a byte at a time because
      # Chrome JavaScript did not handle the following properly:
      # String.fromCharCode(*Uint8Array.new(event.target.result))
      # See commit 46058b1e8baff80c75ea72f5b79f2f23af2e87a5
      bytes = Uint8Array.new(event.target.result)
      binary = ''
      for i in 0...bytes.byteLength
        binary += String.fromCharCode(bytes[i])
      end

      post 'financials', spreadsheet: btoa(binary) do |response|
        report = @report
        report += "\n" if report and not report.end_with? "\n"
        report += "\n" if report
        report += response.table

        self.change_text target: {value: report}

        @upload = nil
        @disabled = false
      end
    end
    reader.readAsArrayBuffer(document.getElementById('upload').files[0])
  end

  #########################################################################
  #                            Establish Project                          #
  #########################################################################

  def initialize_establish_project()
    @search = ''

    @pmcname = nil
    @pmcdesc = nil
    @chair = nil
    @pmc = []

    # get a list of committers
    unless Server.committers
      retrieve 'committers', :json do |committers|
        Server.committers = committers || []
      end
    end

    # get a list of PMCs
    if @pmcs.empty?
      post 'post-data', request: 'committee-list' do |response|
        @pmcs = response
      end
    end
  end

  def establish_pmc(person)
    @chair = person unless @chair
    @pmc << person
    @search = ''
  end

  def draft_establish_project()
    @disabled = true

    people = []
    Array(document.querySelectorAll('input:checked')).each do |checkbox|
      people << checkbox.value
    end

    options = {
      request: 'establish',
      pmcname: @pmcname,
      parent: @parent,
      description: @pmcdesc,
      chair: @chair.id,
      people: people.join(',')
    }

    post 'post-data', options do |response|
      @button = @header = 'Add Resolution'
      @title = response.title
      @report = response.draft
      @label = 'resolution'
      @disabled = false
    end
  end

  #########################################################################
  #                            Terminate Project                          #
  #########################################################################

  def initialize_terminate_project()
    # get a list of PMCs
    if @pmcs.empty?
      post 'post-data', request: 'committee-list' do |response|
        @pmcs = response
      end
    end

    @termreason = nil
  end

  def draft_terminate_project()
    @disabled = true
    options = {
      request: 'terminate',
      pmc: document.getElementById('terminate-pmc').value,
      reason: @termreason
    }

    post 'post-data', options do |response|
      @button = @header = 'Add Resolution'
      @title = response.title
      @report = response.draft
      @label = 'resolution'
      @disabled = false
    end
  end

  #########################################################################
  #                           Out of Cycle report                         #
  #########################################################################

  def initialize_out_of_cycle()
    @disabled = true

    # gather a list of reports already on the agenda
    scheduled = {}
    Agenda.index.each do |item|
      if item.attach =~ /^[A-Z]/
        scheduled[item.title.downcase] = true
      end
    end

    # get a list of PMCs and select ones that aren't on the agenda
    @pmcs = []
    post 'post-data', request: 'committee-list' do |response|
      response.each do |pmc|
        @pmcs << pmc unless scheduled[pmc]
      end
    end
  end

  def draft_out_of_cycle_report()
    pmc =  document.getElementById('out-of-cycle-pmc').value.
      gsub(/\b[a-z]/) {|s| s.upcase()}
    @button = 'post report'
    @disabled = true
    @report = ''
    @header = 'Post Report'
    @label = 'report'
    @message = "Post Out of Cycle #{pmc} Report"
    @attach = '+' + pmc
    @disabled = false
  end

  #########################################################################
  #                         Change Project Chair                          #
  #########################################################################

  def initialize_chair_change()
    @disabled = true
    @pmcs = []
    chair_pmc_change(nil)
    post 'post-data', request: 'committee-list' do |response|
      @pmcs = response
      chair_pmc_change(@pmcs.first)
    end
  end

  def chair_pmc_change(pmc)
    @disabled = true
    @outgoing_chair = nil
    @pmc_members = []
    return unless pmc
    post 'post-data', request: 'committee-members', pmc: pmc do |response|
      @outgoing_chair = response.chair.name
      @pmc_members = response.members
      @disabled = false
    end
  end

  def parent_pmc_change(pmc)
    @roster = []
    @parent = pmc
    return unless pmc
    post 'post-data', request: 'committer-list', pmc: pmc do |response|
      @roster = response.members if response
    end
  end

  def draft_chair_change_resolution()
    @disabled = true
    options = {
      request: 'change-chair',
      pmc: document.getElementById('change-chair-pmc').value,
      chair: document.getElementById('incoming-chair').value
    }

    post 'post-data', options do |response|
      @button = @header = 'Add Resolution'
      @title = response.title
      @report = response.draft
      @label = 'resolution'
      @disabled = false
    end
  end

end