ecr.command

src/ecr/command.py
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import os
import time
from typing import cast, Tuple
from argparse import Namespace
from watchdog.events import FileSystemEventHandler
from .helper import loadMan, printHead
from .core import manager, WorkManager, WorkItem, WorkItemType
from .ui import SwitchState, color
from . import ReturnCode, shared, ui

__all__ = ["init", "new", "now", "pwd", "cd", "clear",
           "getVersion", "shutdown", "run", "clean", "cls", "edit", "debug", "judge"]
cmds = ["init", "new", "now", "pwd", "cd", "clear",
        "version", "run", "clean", "cls", "exit", "edit", "debug", "judge"]


def printFileModify(file: str)->None:
    ui.console.write(color.useYellow("M"), file)


def printFileCreate(file: str)->None:
    ui.console.write(color.useGreen("+"), file)


def printFileDelete(file: str)->None:
    ui.console.write(color.useRed("-"), file)


def assertInited()->bool:
    if not shared.man:
        ui.console.error("Not have any ecr directory")
        return False
    return True


def init(args: Namespace)->ReturnCode:  # pylint: disable=W0613
    manager.initialize(cast(str, shared.cwd))
    loadMan()
    printHead()
    return ReturnCode.OK if shared.man else ReturnCode.UNLOADED


def clear(args: Namespace)->ReturnCode:  # pylint: disable=W0613
    if not assertInited():
        return ReturnCode.UNLOADED
    tman: WorkManager = cast(WorkManager, shared.man)
    if ui.console.confirm("Do you want to clear ALL?",
                          [SwitchState.OK, SwitchState.Cancel]) == SwitchState.OK:
        manager.clear(tman.workingDirectory)
        shared.man = None
    return ReturnCode.OK


def now(args: Namespace)->ReturnCode:
    if not assertInited():
        return ReturnCode.UNLOADED
    tman: WorkManager = cast(WorkManager, shared.man)
    tman.setCurrent(args.file, args.dir)
    return ReturnCode.OK


def new(args: Namespace)->ReturnCode:
    if not assertInited():
        return ReturnCode.UNLOADED
    tman: WorkManager = cast(WorkManager, shared.man)
    if not args.file and not tman.currentFile:
        ui.console.write("Please set file first")
        return ReturnCode.ERROR
    file = args.file if args.file else cast(WorkItem, tman.currentFile).name
    result = tman.newCode(tman.getWorkItem(
        args.file, args.dir) if args.file else None)

    if result:
        tman.currentFile = result
        printFileCreate(file)
        if args.edit:
            return edit(Namespace(file=file, now=False))
        return ReturnCode.OK
    else:
        ui.console.error(f"Can't create file {file}")
        return ReturnCode.ERROR


def edit(args: Namespace)->ReturnCode:
    if not assertInited():
        return ReturnCode.UNLOADED
    tman: WorkManager = cast(WorkManager, shared.man)
    if not args.file and not tman.currentFile:
        ui.console.write("Please set file first")
        return ReturnCode.ERROR
    if not args.file and not tman.currentFile:
        ui.console.write("Please set file first")
        return ReturnCode.ERROR
    file = args.file if args.file else cast(WorkItem, tman.currentFile).name
    result = tman.edit(tman.getWorkItem(
        args.file, args.dir) if args.file else None)
    if result:
        printFileModify(file)
        if args.now:
            return now(Namespace(file=file))
        return ReturnCode.OK
    else:
        ui.console.error(f"Editing file error {file}")
        return ReturnCode.ERROR
    return ReturnCode.OK


class RunWatchEventHandler(FileSystemEventHandler):
    def __init__(self, file, func):
        self.func = func
        self.file = file
        self.state = False

    def on_moved(self, event):  # pylint: disable=W0235
        super().on_moved(event)
        # self.func()

        # what = 'directory' if event.is_directory else 'file'
        # logging.info("Moved %s: from %s to %s", what, event.src_path,event.dest_path)

    def on_created(self, event):  # pylint: disable=W0235
        super().on_created(event)

    def on_deleted(self, event):  # pylint: disable=W0235
        super().on_deleted(event)
        # self.func()

    def on_modified(self, event):
        super().on_modified(event)
        if not self.file or os.path.split(event.src_path)[-1] == self.file:
            self.state = not self.state
            if self.state:  # one modify raise two event
                self.func()


def getItem(tman: WorkManager, args: Namespace)->Tuple[WorkItem, str]:
    if args.file:
        item = tman.getWorkItem(
            args.file, args.dir)
    else:
        item = tman.getWorkItem(
            cast(WorkItem, tman.currentFile).name, cast(WorkItem, tman.currentFile).type == WorkItemType.Directory)
        tman.currentFile = item
    file = cast(WorkItem, item).name
    return cast(WorkItem, item), file


def run(args: Namespace)->ReturnCode:
    if not assertInited():
        return ReturnCode.UNLOADED
    tman: WorkManager = cast(WorkManager, shared.man)
    if not args.file and not tman.currentFile:
        ui.console.write("Please set file first")
        return ReturnCode.ERROR

    # pylint: disable=W0105
    """def func(ret): # for async
        try:
            ret.append(tman.execute(io=args.io, file=args.file))
        except:
            ret.append(False)

    ret = []

    new_thread = threading.Thread(target=func, args=(ret,))
    new_thread.start()

    while not tman.runner:
        pass

    while tman.runner != None and tman.runner.isRunning:
        cmd = ui.console.read()
        if cmd == "kill":
            ui.console.write(cmd)
            tman.runner.terminate()
            new_thread.join()
        elif tman.runner.canInput:
            tman.runner.input(cmd)

    result = ret[0] if len(ret) > 0 else False """

    if not args.watch:
        item, file = getItem(tman,args)
        result = tman.execute(io=args.io, item=item)

        if not result:
            ui.console.error("Running failed")
            return ReturnCode.RUNERR
        return ReturnCode.OK
    else:
        file = args.file if args.file else cast(
            WorkItem, tman.currentFile).name

        def func():
            item, file = getItem(tman,args)
            ui.console.clear()
            ui.console.info(f"Watching", end=" ")
            printFileModify(file)
            result = tman.execute(io=args.io, item=item)
            if not result:
                ui.console.error("Running failed")

        from watchdog.observers import Observer
        ui.console.info(f"Watching {file} (press ctrl+c to end)")

        path = tman.workingDirectory if item.type == WorkItemType.File else item.path
        event_handler = RunWatchEventHandler(
            file if item.type == WorkItemType.File else None, func)
        observer = Observer()
        observer.schedule(event_handler, path, recursive=False)
        observer.start()
        try:
            while True:
                time.sleep(1)
        except KeyboardInterrupt:
            observer.stop()
            ui.console.info("Watching end.")
        observer.join()
        return ReturnCode.OK


def judge(args: Namespace)->ReturnCode:
    if not assertInited():
        return ReturnCode.UNLOADED
    tman: WorkManager = cast(WorkManager, shared.man)
    if not args.file and not tman.currentFile:
        ui.console.write("Please set file first")
        return ReturnCode.ERROR

    if not args.watch:
        item, file = getItem(tman,args)
        result = tman.judge(reexecute=args.re,
                            item=item, judger=args.judger)

        if not result:
            ui.console.error("Judging failed")
            return ReturnCode.JUDGEERR
        else:
            ui.console.ok("Judging passed")
            return ReturnCode.OK
    else:
        file = args.file if args.file else cast(
            WorkItem, tman.currentFile).name

        def func():
            item, file = getItem(tman,args)
            ui.console.clear()
            ui.console.info(f"Watching", end=" ")
            printFileModify(file)
            result = tman.judge(reexecute=args.re,
                                item=item, judger=args.judger)
            if not result:
                ui.console.error("Judging failed")
                return ReturnCode.JUDGEERR
            else:
                ui.console.ok("Judging passed")
                return ReturnCode.OK

        from watchdog.observers import Observer
        ui.console.info(f"Watching {file} (press ctrl+c to end)")
        path = tman.workingDirectory if item.type == WorkItemType.File else item.path
        event_handler = RunWatchEventHandler(
            file if item.type == WorkItemType.File else None, func)
        observer = Observer()
        observer.schedule(event_handler, path, recursive=False)
        observer.start()
        try:
            while True:
                time.sleep(1)
        except KeyboardInterrupt:
            observer.stop()
            ui.console.info("Watching end.")
        observer.join()
        return ReturnCode.OK


def clean(args: Namespace)->ReturnCode:  # pylint: disable=W0613
    if not assertInited():
        return ReturnCode.UNLOADED
    tman: WorkManager = cast(WorkManager, shared.man)
    tman.clean(rmHandler=printFileDelete)
    return ReturnCode.OK


def shutdown(args: Namespace)->ReturnCode:  # pylint: disable=W0613
    return ReturnCode.EXIT


def pwd(args: Namespace)->ReturnCode:  # pylint: disable=W0613
    ui.console.write(shared.cwd)
    return ReturnCode.OK


def getVersion(args: Namespace)->ReturnCode:  # pylint: disable=W0613
    ui.console.write("edl-cr", shared.version)
    ui.console.write("Copyright (C) eXceediDeal")
    ui.console.write(
        "License Apache-2.0, Source https://github.com/eXceediDeaL/edl-coderunner")
    return ReturnCode.OK


def cd(args: Namespace)->ReturnCode:
    if not os.path.exists(args.path):
        ui.console.error("No this directory")
        return ReturnCode.ERROR
    os.chdir(args.path)
    shared.cwd = os.getcwd()
    loadMan()
    printHead()
    return ReturnCode.OK


def cls(args: Namespace)->ReturnCode:  # pylint: disable=W0613
    ui.console.clear()
    return ReturnCode.OK


def debug(args: Namespace) -> ReturnCode:  # pylint: disable=W0613
    import json
    ui.console.write(json.dumps(
        cast(WorkManager, shared.man).__dict__, default=str, indent=4))

    return ReturnCode.OK