import os
import sys
import inspect

from .lsp import LspServer, handler, method, command
from .java import Java

def find_server_classes (values=None):
    values = values or globals()
    return dict([(item[0].lower(), item[1]) for item in values.items() if inspect.isclass(item[1]) and LspServer in inspect.getmro(item[1])])

def select_server_class (argument):
    classes = find_server_classes()
    if argument.lower() in classes:
        return classes[argument]
    
    if os.path.isfile(argument):
        script_locals = {
            "LspServer": LspServer,
            "handler": handler,
            "method": method,
            "command": command
        }
        
        with open(argument) as server_script:
            exec(server_script.read(), script_locals)
            
        return [item[1] for item in find_server_classes(script_locals).items() if not item[1] == LspServer][0]

def main ():
    server_class = select_server_class(sys.argv[1])
    server = server_class(sys.argv[2:])

    try:
        server.start()
    except Exception as e:
        server.close()
        raise e