#!/usr/bin/env python2

# This scripts appends the test metadata to the master json
# -------------------------------------------------------------------------

import argparse  # argument parsing
import json  # json parsing
import sys
import re
import os  # filesystem manipulation

import csv
import datetime
import uuid
from collections import OrderedDict

# Parse and validate arguments
# ==============================================================================
parser = argparse.ArgumentParser(description="Appends test metadata to master database")
parser.add_argument(
    "--masterTestListPath",
    "-m",
    default="masterTestList.json",
    required=False,
    help="Path to Master Metadata",
)
parser.add_argument(
    "--testMetadataPaths", "-t", required=True, help="Path to Json Metadata", nargs="+"
)
args = parser.parse_args()

# Open master file
if os.path.isfile(args.masterTestListPath):
    with open(args.masterTestListPath) as f:
        masterJson = json.load(f, object_pairs_hook=OrderedDict)
else:
    masterJson = {"fields": [], "testcases": []}


for testMetadata in args.testMetadataPaths:
    if not os.path.isfile(testMetadata):
        print("Error: testMetadataPath does not exist")
        print("Path: " + testMetadata)
        sys.exit(1)

    # Open test metadata
    try:
        with open(testMetadata) as f:
            designJson = json.load(f, object_pairs_hook=OrderedDict)
    except ValueError as e:
        print("Error occured opening or loading json file.")
        print("Exception: %s" % str(e), file=sys.stderr)
        sys.exit(1)

    if not designJson["uuid"] in [d["uuid"] for d in masterJson["testcases"]]:
        masterJson["testcases"].append(designJson)

        # Update Headers if necessary
        for key in list(designJson):
            if not key in masterJson["fields"]:
                masterJson["fields"].append(key)
                print("Updating fields with", key)
    else:
        print(
            "Skipping "
            + designJson["platform"]
            + "/"
            + designJson["design"]
            + " ("
            + designJson["uuid"]
            + ") already in masterDB"
        )


# Dump JSON
with open(args.masterTestListPath, "w") as f:
    json.dump(masterJson, f, indent=2)


# Dump CSV
csvFilePath = os.path.splitext(args.masterTestListPath)[0] + ".csv"
with open(csvFilePath, "w") as csvfile:
    fieldnames = list(masterJson["fields"])
    writer = csv.DictWriter(
        csvfile,
        fieldnames=fieldnames,
        restval="-",
        extrasaction="ignore",
        dialect="excel",
    )

    writer.writeheader()
    for testcase in masterJson["testcases"]:
        writer.writerow(testcase)