from django.db import migrations

# what each setting does, shown under it on the Settings page
DESCRIPTIONS = {
    "INSTANCE_ARCH_DEFAULT_TYPE": "Architecture chosen first on the new VM pages",
    "INSTANCE_MACHINE_DEFAULT_TYPE": "Machine type chosen first on the new VM pages",
    "INSTANCE_FIRMWARE_DEFAULT_TYPE": "Firmware chosen first for a new x86_64 VM",
    "INSTANCE_CPU_DEFAULT_MODE": "CPU mode chosen first for a new VM",
    "INSTANCE_NIC_DEFAULT_TYPE": "Network card model chosen first for a new VM (default: libvirt's choice)",
    "INSTANCE_VIDEO_DEFAULT_TYPE": "Video device chosen first for a new VM",
    "INSTANCE_INPUT_DEFAULT_DEVICE": "Input device chosen first for a new VM (None: no input device)",
    "INSTANCE_CDROM_ADD": "Bus of the CD-ROM a new VM gets (None: no CD-ROM)",
    "INSTANCE_VOLUME_DEFAULT_BUS": "Bus of new disks",
    "INSTANCE_VOLUME_DEFAULT_FORMAT": "Format of new disk images in directory pools",
    "INSTANCE_VOLUME_DEFAULT_CACHE": "Cache mode of new disks",
    "INSTANCE_VOLUME_DEFAULT_IO": "I/O mode of new disks (native needs cache none or directsync)",
    "INSTANCE_VOLUME_DEFAULT_DISCARD": "Discard of new disks (unmap: the guest's TRIM frees space in the image)",
    "INSTANCE_VOLUME_DEFAULT_DETECT_ZEROES": "Detect zeroes of new disks: how blocks of zeros the guest writes are stored",
    "INSTANCE_VOLUME_DEFAULT_SCSI_CONTROLLER": "Controller model for disks on the SCSI bus",
    "INSTANCE_VOLUME_DEFAULT_OWNER_UID": "Owner of new disk image files (0: root; qemu is often 107)",
    "INSTANCE_VOLUME_DEFAULT_OWNER_GID": "Group of new disk image files (0: root; qemu is often 107)",
    "CLONE_INSTANCE_AUTO_NAME": "Users who are not administrators get clone names made from the prefix",
    "CLONE_INSTANCE_DEFAULT_PREFIX": "Prefix of the names made for clones: prefix1, prefix2, ...",
    "CONSOLE_SCALE": "The console starts scaled to its window",
    "CONSOLE_VIEW_ONLY": "The console starts view-only: no keyboard or mouse input",
    "CONSOLE_RESIZE_SESSION": "The console starts asking the guest to fit its screen to the window",
    "CONSOLE_CLIP_VIEWPORT": "The console starts clipped to its window, without scaling",
    "SHOW_ACCESS_ROOT_PASSWORD": "Show Root Password on a VM's Access tab",
    "SHOW_ACCESS_SSH_KEYS": "Show SSH Keys on a VM's Access tab",
    "ALLOW_INSTANCE_MULTIPLE_OWNER": "A VM can be given to more than one user",
    "QUOTA_DEBUG": "A quota refusal shows the numbers: what would be used and what is allowed",
    "VIEW_INSTANCES_LIST_STYLE": "Instances page for administrators: VMs under their host, or one list",
    "VIEW_INSTANCE_DETAIL_BOTTOM_BAR": "A VM's page shows a bar with its host's links at the bottom",
    "VM_DRBD_STATUS": "The Instances page shows each VM's DRBD state",
    "LOGS_PER_PAGE": "Rows per page on the Logs page",
}


def describe(apps, schema_editor):
    """Descriptions that say what each setting does; they were tooltips
    before, many only repeating the name. Not undone on the way back."""
    AppSettings = apps.get_model("appsettings", "AppSettings")
    for setting in AppSettings.objects.using(schema_editor.connection.alias).filter(key__in=DESCRIPTIONS):
        setting.description = DESCRIPTIONS[setting.key]
        setting.save()


class Migration(migrations.Migration):
    dependencies = [
        ("appsettings", "0020_fix_setting_choices"),
    ]

    operations = [
        migrations.RunPython(describe, migrations.RunPython.noop),
    ]