"""Display details for a specified volume."""
# :license: MIT, see LICENSE for more details.

import click
import SoftLayer
from SoftLayer.CLI import environment
from SoftLayer.CLI import formatting
from SoftLayer import utils


@click.command()
@click.argument('volume_id')
@environment.pass_env
def cli(env, volume_id):
    """Display details for a specified volume."""
    file_manager = SoftLayer.FileStorageManager(env.client)
    file_volume = file_manager.get_file_volume_details(volume_id)
    file_volume = utils.NestedDict(file_volume)

    table = formatting.KeyValueTable(['Name', 'Value'])
    table.align['Name'] = 'r'
    table.align['Value'] = 'l'

    storage_type = file_volume['storageType']['keyName'].split('_').pop(0)
    table.add_row(['ID', file_volume['id']])
    table.add_row(['Username', file_volume['username']])
    table.add_row(['Type', storage_type])
    table.add_row(['Capacity (GB)', "%iGB" % file_volume['capacityGb']])

    used_space = int(file_volume['bytesUsed'])\
        if file_volume['bytesUsed'] else 0
    if used_space < (1 << 10):
        table.add_row(['Used Space', "%dB" % used_space])
    elif used_space < (1 << 20):
        table.add_row(['Used Space', "%dKB" % (used_space / (1 << 10))])
    elif used_space < (1 << 30):
        table.add_row(['Used Space', "%dMB" % (used_space / (1 << 20))])
    else:
        table.add_row(['Used Space', "%dGB" % (used_space / (1 << 30))])

    if file_volume.get('iops'):
        table.add_row(['IOPs', file_volume['iops']])

    if file_volume.get('storageTierLevel'):
        table.add_row([
            'Endurance Tier',
            file_volume['storageTierLevel'],
        ])

    table.add_row([
        'Data Center',
        file_volume['serviceResource']['datacenter']['name'],
    ])
    table.add_row([
        'Target IP',
        file_volume['serviceResourceBackendIpAddress'],
    ])

    if file_volume['fileNetworkMountAddress']:
        table.add_row([
            'Mount Address',
            file_volume['fileNetworkMountAddress'],
        ])

    if file_volume['snapshotCapacityGb']:
        table.add_row([
            'Snapshot Capacity (GB)',
            file_volume['snapshotCapacityGb'],
        ])
        if 'snapshotSizeBytes' in file_volume['parentVolume']:
            table.add_row([
                'Snapshot Used (Bytes)',
                file_volume['parentVolume']['snapshotSizeBytes'],
            ])

    table.add_row(['# of Active Transactions', "%i"
                   % file_volume['activeTransactionCount']])

    if file_volume['activeTransactions']:
        for trans in file_volume['activeTransactions']:
            if 'transactionStatus' in trans and 'friendlyName' in trans['transactionStatus']:
                table.add_row(['Ongoing Transaction', trans['transactionStatus']['friendlyName']])

    table.add_row(['Replicant Count', "%u" % file_volume.get('replicationPartnerCount', 0)])

    if file_volume['replicationPartnerCount'] > 0:
        # This if/else temporarily handles a bug in which the SL API
        # returns a string or object for 'replicationStatus'; it seems that
        # the type is string for File volumes and object for Block volumes
        if 'message' in file_volume['replicationStatus']:
            table.add_row(['Replication Status', "%s"
                           % file_volume['replicationStatus']['message']])
        else:
            table.add_row(['Replication Status', "%s"
                           % file_volume['replicationStatus']])

        replicant_list = []
        for replicant in file_volume['replicationPartners']:
            replicant_table = formatting.Table(['Replicant ID',
                                                replicant['id']])
            replicant_table.add_row([
                'Volume Name',
                utils.lookup(replicant, 'username')])
            replicant_table.add_row([
                'Target IP',
                utils.lookup(replicant, 'serviceResourceBackendIpAddress')])
            replicant_table.add_row([
                'Data Center',
                utils.lookup(replicant,
                             'serviceResource', 'datacenter', 'name')])
            replicant_table.add_row([
                'Schedule',
                utils.lookup(replicant,
                             'replicationSchedule', 'type', 'keyname')])
            replicant_list.append(replicant_table)
        table.add_row(['Replicant Volumes', replicant_list])

    if file_volume.get('originalVolumeSize'):
        original_volume_info = formatting.Table(['Property', 'Value'])
        original_volume_info.add_row(['Original Volume Size', file_volume['originalVolumeSize']])
        if file_volume.get('originalVolumeName'):
            original_volume_info.add_row(['Original Volume Name', file_volume['originalVolumeName']])
        if file_volume.get('originalSnapshotName'):
            original_volume_info.add_row(['Original Snapshot Name', file_volume['originalSnapshotName']])
        table.add_row(['Original Volume Properties', original_volume_info])

    env.fout(table)
