import sys, logging, argparse
from datetime import datetime
import archive.archive as archive
import config

logging.basicConfig(level=logging.DEBUG)

def get_key(kv):
    return datetime.strptime(kv[0], "%B_%Y")

def get_result_key(r):
    return r['archive']

def run(args):

    if not args.keyword:
        sys.exit('No keyword. Aborting.')

    if args.field not in ["content", "from"]:
        sys.exit('Invalid field ' + args.field + '. Aborting.')        

    all_lists = archive.list_tables_db(config.db['database'], config.db['host'], config.db['user'], config.db['password'])

    if not args.list or (len(args.list) == 1 and args.list[0] == "all"):
        args.list = all_lists

    results = []
    for l in args.list:

        if l not in all_lists:
            logging.warning(l + "is not a valud list... continuing")
            continue

        k_arg = args.keyword
        f_arg = args.field
        
        with archive.Archive(l, config=config.db) as a:
            if f_arg == 'content':
                r = a.content_search(k_arg)
            else:
                r = a.from_search(k_arg)

            # format data to return
            search_results = { "keyword": k_arg, "field": f_arg, "archive": a.archive_name, "results": [] }
            month_year_results = {}

            for (from_, author_name_, subject_, date_, url_) in r:
                m_y = date_.strftime("%B_%Y")
                if m_y not in month_year_results:
                    month_year_results[m_y] = []
                month_year_results[m_y].append({ 'url': url_, 'subject': subject_, 'author_name': author_name_})

            for k, v in sorted(month_year_results.items(), key=get_key, reverse=True):
                search_results['results'].append({ 'thread': k, 'nbr_hits': len(v), 'hits': v})

        results.append(search_results)


    return sorted(results, key=get_result_key)


    # for l in args.list:
    #     arch = search.archive.Archive('archives/')
    #     arch.load(l)

    #     r = arch.search(keyword=args.keyword, field=args.field)

    #     for z in r['results']:
    #         print(z['thread'] + " ---- " + str(z['nbr_hits']))
    #         for zz in z['hits']:
    #             print(" " + zz['url'])
    #             print(" " + zz['index_str'])

    # sys.exit()

if __name__ == "__main__":

    p = argparse.ArgumentParser(description='Searches mailinglists archives')
    p.add_argument('keyword', metavar="keyword", help="keyword to search")
    p.add_argument('--list', '-l', help="mailinglist(s') name(s) (default 'all')", nargs="+")
    p.add_argument('--field', '-f', help="message field (i.e. 'content' or 'from' (default 'content'))", default="content")
    p.add_argument('--json', '-j', help="json output")

    args = p.parse_args()

    result = run(args)

    if args.json:
        import json
        print(json.dumps(result, indent=4))
    else:
        print(result)