#!/usr/bin/env python3
"""Одна проверенная live-операция source debugger через sdbgbridge."""
import argparse
import json
import sys

from sdbg.model import DebugMap
from sdbg.session import DebugSession, SessionError
from sdbg.transport import BridgeError, FileBridge


def main():
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument('--build', required=True, help='каталог .sprinter-cc-NAME')
    parser.add_argument('--ipc', required=True, help='SDBG_IPC_DIR процесса MAME')
    parser.add_argument('--session', required=True, help='SDBG_SESSION_ID процесса MAME')
    parser.add_argument('--timeout', type=float, default=5)
    commands = parser.add_subparsers(dest='command', required=True)
    commands.add_parser('attach')
    commands.add_parser('where')
    step = commands.add_parser('step')
    step.add_argument('--wait', type=float, default=5)
    commands.add_parser('continue')
    commands.add_parser('activate-breakpoints')
    commands.add_parser('deactivate-breakpoints')
    line = commands.add_parser('break-line')
    line.add_argument('file')
    line.add_argument('line', type=int)
    line.add_argument('--disabled', action='store_true')
    function = commands.add_parser('break-function')
    function.add_argument('name')
    function.add_argument('--disabled', action='store_true')
    variable = commands.add_parser('read-variable')
    variable.add_argument('name')
    variable.add_argument('--module')
    args = parser.parse_args()
    bridge = None
    try:
        bridge = FileBridge(args.ipc, args.session, args.timeout)
        session = DebugSession(DebugMap(args.build), bridge)
        attached = session.attach()
        if args.command == 'attach': result = attached
        elif args.command == 'where': result = session.where()
        elif args.command == 'break-line':
            result = session.break_line(args.file, args.line, not args.disabled)
        elif args.command == 'break-function':
            result = session.break_function(args.name, not args.disabled)
        elif args.command == 'activate-breakpoints': result = session.activate_breakpoints()
        elif args.command == 'deactivate-breakpoints': result = session.deactivate_breakpoints()
        elif args.command == 'read-variable': result = session.read_variable(args.name, args.module)
        elif args.command == 'step':
            bridge.request('step')
            result = session.where(bridge.wait_stopped(args.wait))
        else:
            result = bridge.request('continue')
        print(json.dumps(result, ensure_ascii=False, indent=2))
        return 0
    except (BridgeError, SessionError, ValueError, OSError, KeyError) as error:
        print('sdbg-session: ' + str(error), file=sys.stderr)
        return 1
    finally:
        if bridge is not None:
            bridge.close()


if __name__ == '__main__':
    sys.exit(main())