#!/usr/bin/env python3
#
# Determine if this tool can run a test based on a test spec.
#

import datetime
import sys

import pscheduler

logger = pscheduler.Log(prefix='tool-iperf2', quiet=True)

json = pscheduler.json_load(exit_on_error=True)

try:
    if json['type'] != 'throughput':
        pscheduler.succeed_json({
            "can-run": False,
            "reasons": [ "Unsupported test type" ]
        })
except KeyError:
    pscheduler.succeed_json({
        "can-run": False,
        "reasons": [ "Missing test type" ]
    })

if not json.get('spec'):
    pscheduler.succeed_json({
        "can-run": False,
        "reasons": [ "Missing test spec" ]
    })

try:
    spec = json["spec"]
    pscheduler.json_check_schema(spec, 7)
except KeyError:
    pscheduler.succeed_json({
        "can-run": False,
        "reasons": ["Missing test specification"]
    })
except ValueError as ex:
    pscheduler.succeed_json({
        "can-run": False,
        "reasons": [str(ex)]
    })


errors = []



supported_options = ["schema",
                     "source", "source-node",
                     "dest", "dest-node",
                     "ip-version", "duration", "interval", "link-rtt",
                     "parallel", "window-size", "bandwidth", "fq-rate",
                     "buffer-length", "local-address", "congestion",
                     "udp", "single-ended", "single-ended-port", "loopback"
                     ]

for option in spec:
    if option not in supported_options:
        errors.append(f'''Option '{option}' is not supported.''')

# bandwidth only supported in udp mode
if "bandwidth" in spec and "udp" not in spec:
    errors.append('Cannot set bandwidth on non-udp tests')

logger.debug("can-run succeeded")

result = {
    "can-run": len(errors) == 0
}

if len(errors) > 0:
    result["reasons"] = errors

pscheduler.succeed_json(result)
