require 'pmap'

class PVE::Cli

def cli_base
  cli.cmd :list, "List CT/VM-IDs", aliases: ['ls'], &lambda {|target=nil|
    connect
    nodes = Proxmox::Node.all
    nodes.
      flat_map {|n| [ n.method(:lxc), n.method(:qemu) ] }.
      flat_pmap {|m| m.call.map {|c| c.vmid.to_i } }.
      sort.
      each {|c| puts c }
  }

  cli.cmd( :status, "Lists Nodes/VMs/CTs with status", &lambda {|target=nil, sort: 'n', node: nil|
    connect
    node &&= /\A#{node}\z/
    to = TablizedOutput.new %w[Status HA ID Name Host Uptime CPU/% Mem/MiB Mem/% Disk/MiB Disk/%]
    push =
      if target
        target = /\A#{target}\z/
        lambda {|n| to.virt n  if n === target }
      else
        lambda {|n| to.virt n }
      end
    nodes = Proxmox::Node.all
    nodes.
      select {|n| not node or n === node }.
      flat_map {|n| [ n.method(:lxc), n.method(:qemu) ] }.
      each {|m| m.call.each &push }
    to.print order: sort.each_char.map {|c| (2*c.ord[5]-1) * (' sainhucmd'.index( c.downcase)) }
  }).
    opt( :sort, '-s', '--sort=COLUMNS', "Sort by COLUMNs eg hn for host and name ([s]tatus, h[a], [i]d, [n]ame (default), [h]ost, [u]ptime, [c]pu, [m]em, [d]isk)").
    opt( :node, '-n', '--node=NODE', "List only hosted by this NODE")

  def prepare_show_config cnf
    r = {}
    cnf.each do |k,v|
      case k
      when :network
        v.each do |net|
          s =
            net.
              reject {|k, v| :card == k }.
              sort_by {|k, v| :name == k ? :AAAAAAAAA : k }.
              map {|k, v| case v when true then [k,1] when false then [k,0] else [k,v] end }.
              map {|k, v| "#{k}=#{v}" }
          r[net[:card].to_sym] = s.join(",")
        end
      when :sshkeys
        r[k] = CGI.unescape(v).gsub( /^/, " "*14).gsub /\A {14}|\n\z/, ''
      else
        case v
        when true then v = 1
        when false then v = 0
        end
        r[k] = v.to_s.gsub( /$^/, " "*14).gsub /\n\z/, ''
      end
    end
    r
  end

  def show_config cnf, old = nil
    cnf = prepare_show_config cnf
    if old
      old = prepare_show_config old
      (cnf.keys+old.keys).uniq.sort.each do |k|
        v, o = cnf[k], old[k]
        if v == o
          puts "#{k}:#{' ' * (12-k.length)} #{v}"
        else
          puts "\e[31m#{k}:#{' ' * (12-k.length)} #{o}\e[0m"  unless o.nil?
          puts "\e[32m#{k}:#{' ' * (12-k.length)} #{v}\e[0m"  unless v.nil?
        end
      end
    else
      cnf.sort_by{|k,v|k}.each do |k,v|
        puts "#{k}:#{' ' * (12-k.length)} #{v}"
      end
    end
  end

  cli.sub :config, "CT/VM Configuration", min: 2, aliases: %w[cnf] do |ccli|
    ccli.cmd 'help', '', aliases: [nil, '-h', '--help'], &lambda {|*args| help ccli, *args }

    ccli.cmd :show, "Show Config of CT/VM", &lambda {|name_or_id|
      connect
      th = Proxmox::LXC.find( name_or_id) || Proxmox::Qemu.find_by_name( name_or_id)
      show_config th.config
    }

    ccli.cmd :set, "Set Configs for CT/VM", &lambda {|name_or_id, *args|
      if %w[-h --help].include? name_or_id
        STDERR.puts "Usage: set -h|--help # Show help"
        STDERR.puts "       set ct|vm --CNF1=VAL1 --CNF2=VAL2 ... # Set config-value.  Empty value clears field."
        exit 1
      end
      opts = {}
      until args.empty?
        case arg = args.shift
        when /\A--(\w+)=(.*)\z/
          opts[$1.to_sym] = $2
        when /\A--(\w+)\z/
          opts[$1.to_sym] = args.shift
        else
          raise UsageError, "Expection option to set. What do you mean with: #{arg}"
        end
      end
      opts.each do |k, v|
        opts[k] =
          case v = opts[k]
          when '' then nil
          else v
          end
      end
      %i[migrate_downtime].each do |k|
        next  unless opts.has_key? k
        opts[k] =
          case v = opts[k]
          when nil, '', 'nil' then nil
          else v.to_f
          end
      end
      %i[memory background_delay balloon cores cpulimit cpuunits migrate_speed shares smp sockets vcpus swap tty].each do |k|
        next  unless opts.has_key? k
        opts[k] =
          case v = opts[k]
          when nil, '', 'nil' then nil
          else v.to_i
          end
      end
      %i[unprivileged debug onboot protection template].each do |k|
        next  unless opts.has_key? k
        opts[k] =
          case v = opts[k]
          when *%w[1 T TRUE t true True Y YES y yes Yes] then true
          when *%w[0 F FALSE f false False N NO n no No] then false
          when '', 'nil', nil then nil
          else raise UsageError, "Boolean expected, given: #{v.inspect}"
          end
      end
      connect
      th = Proxmox::LXC.find( name_or_id) || Proxmox::Qemu.find_by_name( name_or_id)
      old = th.config
      opts[:digest] ||= old[:digest]
      th.cnfset opts
      show_config th.config, old
    }
  end

  cli.cmd :enter, "Enter Console of CT/Node", &lambda {|name_or_id|
    connect
    th = Proxmox::LXC.find( name_or_id) || Proxmox::Node.find_by_name( name_or_id)
    raise UsageError, "Container or Node not found: #{name_or_id}"  unless th
    STDERR.puts "! #{$?.exitstatus}"  unless th.enter
  }

  cli.cmd :run, "Starts CT/VM", aliases: %w[start star], &lambda {|name_or_id|
    connect
    th = Proxmox::LXC.find( name_or_id) || Proxmox::Qemu.find_by_name( name_or_id)
    raise UsageError, "Container or Node not found: #{name_or_id}"  unless th
    start th
  }

  #cli.cmd :reboot, "Reboot CT/VM (not implemented, yet)", min: 6, &lambda {|name_or_id|
  #  connect
  #  th = Proxmox::LXC.find( name_or_id) || Proxmox::Qemu.find_by_name( name_or_id)
  #  raise UsageError, "Container or Node not found: #{name_or_id}"  unless th
  #  reboot th
  #}

  cli.cmd :stop, "Stops CT/VM", min: 4, &lambda {|name_or_id|
    connect
    th = Proxmox::LXC.find( name_or_id) || Proxmox::Qemu.find_by_name( name_or_id)
    raise UsageError, "Container or Node not found: #{name_or_id}"  unless th
    stop th
  }

  cli.cmd 'help', '', aliases: ['-h', '--help'], &lambda {|*args| help cli, *args }

  cli.cmd 'cli', 'Opens interactive console', min: 3, aliases: [nil], &lambda {
    @interactive = true
    cli.interactive( File.basename($0,'.rb')).run
  }
end
end