---
- hosts: all
  connection: local
  remote_user: chrome-bot
  become_user: root
  become: yes
  become_method: sudo
  vars:
    nfs_ip: 192.168.1.100
    # override with --extra-vars "nfs_mount_point=/opt/stage"
    nfs_mount_point: /opt/prod
    # If drive is changed, also change total_sectors.
    drive: /dev/sda
    total_sectors: "{{ansible_devices.sda.sectors}}"
    # Generate this with sfdisk -d [drive]
    partition_templ: "./partition.j2"
    expanded_partitions: "/tmp/partitions"
  vars_prompt:
    - name: "static_ip"
      prompt: "We will be formatting /dev/sda.  If that is not okay, stop the script. \n\nWhat are the last two bytes of the static IP address of this bot?  192.168.X.Y "
      private: no
    - name: "hostname"
      prompt: "What is the hostname of this bot?  skia-rpi-*"
      private: no

  tasks:

      # This takes the pre-existing partition template (which is a jinja2
      # template, as per ansible spec) and fills in the size of the last (/b)
      # partition.  This is used to quickly set up the partitions of the disk
      # during the "Partitioning drive" step.
    - name: generating partition file
      template: src="{{partition_templ}}" dest="{{expanded_partitions}}"
      # The magic number 6416384 is simply the beginning of the /b partition.
      # We set the size to be that minus this magic number to make the /b
      # partition take up the rest of the disk.
      with_items:
        - {end: "{{total_sectors|int-6416384}}"}

    - name: unmounting drive and partitions
      shell: umount {{drive}}*
      ignore_errors: true

    - name: Partitioning drive
      shell: sfdisk {{drive}} < {{expanded_partitions}}
      ignore_errors: true

    # TODO(kjlubick): perhaps use the filesystem: module
    - name: formatting boot partition
      command: mkfs.fat {{drive}}1 -n BOOT
    - name: formatting "b" partition
      command: mkfs.ext4 {{drive}}3 -L B
    - name: formatting var partition
      command: mkfs.ext4 {{drive}}5 -L VAR
    - name: formatting tmp partition
      command: mkfs.ext4 {{drive}}6 -L TMP
    - name: formatting home partition
      command: mkfs.ext4 {{drive}}7 -L HOME

    - name: Removing reserved space
      command: tune2fs {{drive}}3 -m 0

    - name: unmounting drive and partitions
      shell: umount {{drive}}*
      ignore_errors: true

    - name: remounting /boot for writing
      mount: src="{{drive}}1" name="/media/boot" fstype="auto" state="mounted"
    - name: Copying /boot files
      shell: cp -rp {{nfs_mount_point}}/boot/* /media/boot/

    - name: deleting /boot/cmdline.txt
      file: path=/media/boot/cmdline.txt state=absent
    - name: "writing /boot/cmdline.txt with hostname skia-rpi-{{hostname}} and ip 192.168.{{static_ip}}"
      lineinfile: dest=/media/boot/cmdline.txt create=yes line="smsc95xx.turbo_mode=N dwc_otg.lpm_enable=0 console=ttyAMA0,115200 console=tty1 root=/dev/nfs nfsroot={{nfs_ip}}:{{nfs_mount_point}}/root,nfsvers=3 ip=192.168.{{static_ip}}:{{nfs_ip}}:192.168.1.1:255.255.255.0:skia-rpi-{{hostname}}:eth0:off:8.8.8.8:8.8.4.4 elevator=deadline fsck.repair=yes rootwait"

    - name: unmounting /boot
      mount: src="{{drive}}1" name="/media/boot" fstype="auto" state="absent"

    - name: remounting /home for writing
      mount: src="{{drive}}7" name="/media/home" fstype="auto" state="mounted"
    - name: Copying /home files
      command: rsync -a {{nfs_mount_point}}/root/home/chrome-bot/ /media/home/
    - name: unmounting /home
      mount: src="{{drive}}7" name="/media/home" fstype="auto" state="absent"


  handlers: