#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# pylint: disable=C0111,C0326,C0103

"""Checks for the latest FULL or OTA updates for specified PRD number."""

import os
import sys

from tcllib import argparser
from tcllib.devices import Device
from tcllib.dumpmgr import write_info_if_dumps_found
from tcllib.requests import (CheckRequest, ChecksumRequest, DownloadRequest,
                             EncryptHeaderRequest, RequestRunner,
                             ServerSelector)


dpdesc = """
    Checks for the latest FULL updates for the specified PRD number or for an OTA from the
    version specified as fvver.
    """
dp = argparser.DefaultParser(__file__, dpdesc)
dp.add_argument("prd", nargs=1, help="CU Reference #, e.g. PRD-63117-011")
dp.add_argument("fvver", nargs="?", help="Firmware version to check for OTA updates, e.g. AAM481 (omit to run FULL check)", default="AAA000")
dp.add_argument("-i", "--imei", help="use specified IMEI instead of default", type=str)
dp.add_argument("-m", "--mode", help="force type of update to check for", default="auto", type=str, choices=["full", "ota"])
dp.add_argument("-t", "--type", help="force type of check to run", default="auto", type=str, choices=["desktop", "mobile"])
dp.add_argument("--rawmode", help="override --mode with raw value (2=OTA, 4=FULL)", metavar="MODE")
dp.add_argument("--rawcltp", help="override --type with raw value (10=MOBILE, 2010=DESKTOP)", metavar="CLTP")
args = dp.parse_args(sys.argv[1:])

dev = Device(args.prd[0], args.fvver)
dev.imei = "3531510"


def sel_mode(txtmode, autoval, rawval):
    """Handle custom mode."""
    if rawval:
        return rawval
    if txtmode == "auto":
        return autoval
    elif txtmode == "ota":
        return dev.MODE_STATES["OTA"]
    return dev.MODE_STATES["FULL"]


def sel_cltp(txtmode, autoval, rawval):
    """Handle custom CLTP."""
    if rawval:
        return rawval
    if txtmode == "auto":
        return autoval
    elif txtmode == "desktop":
        return dev.CLTP_STATES["DESKTOP"]
    return dev.CLTP_STATES["MOBILE"]


if args.imei:
    print("Use specified IMEI: {}".format(args.imei))
    dev.imei = args.imei

if args.fvver == "AAA000":
    dev.mode = sel_mode(args.mode, dev.MODE_STATES["FULL"], args.rawmode)
    dev.cltp = sel_cltp(args.type, dev.CLTP_STATES["DESKTOP"], args.rawcltp)
else:
    dev.mode = sel_mode(args.mode, dev.MODE_STATES["OTA"], args.rawmode)
    dev.cltp = sel_cltp(args.type, dev.CLTP_STATES["MOBILE"], args.rawcltp)

print("Mode: {}".format(dev.mode))
print("CLTP: {}".format(dev.cltp))

runner = RequestRunner(ServerSelector())

# Check for update
chk = CheckRequest(dev)
runner.run(chk)
if not chk.success:
    print("{}".format(chk.error))
    sys.exit(2)
chkres = chk.get_result()
print(chkres.pretty_xml())

# Request download
dlr = DownloadRequest(dev, chkres.tvver, chkres.fw_id)
runner.run(dlr)
if not dlr.success:
    print("{}".format(dlr.error))
    sys.exit(3)
dlrres = dlr.get_result()
print(dlrres.pretty_xml())

if dlrres.encslaves:
    encrunner = RequestRunner(ServerSelector(dlrres.encslaves), https=False)
    cks = ChecksumRequest(dlrres.fileurl, dlrres.fileurl)
    encrunner.run(cks)
    if not cks.success:
        print("{}".format(cks.error))
        sys.exit(4)
    cksres = cks.get_result()
    print(cksres.pretty_xml())

for s in dlrres.slaves:
    print("http://{}{}".format(s, dlrres.fileurl))

for s in dlrres.s3_slaves:
    print("http://{}{}".format(s, dlrres.s3_fileurl))

if dev.mode == dev.MODE_STATES["FULL"]:
    hdr = EncryptHeaderRequest(dlrres.fileurl)
    encrunner.run(hdr)
    if not hdr.success:
        print("{}".format(hdr.error))
        sys.exit(5)
    hdrres = hdr.get_result()
    headname = "header_{}.bin".format(chkres.tvver)
    headdir = "headers"
    if not os.path.exists(headdir):
        os.makedirs(headdir)
    if len(hdrres.rawdata) == 4194320:
        # TODO: Check sha1sum
        print("Header length check passed. Writing to {}.".format(headname))
        with open(os.path.join(headdir, headname), "wb") as f:
            f.write(hdrres.rawdata)
    else:
        print("Header length invalid ({}).".format(len(hdrres.rawdata)))

write_info_if_dumps_found()