__package__ = "archivebox.misc"

import os
import sys
from pathlib import Path

from rich import print
from rich.panel import Panel

# DO NOT ADD ANY TOP-LEVEL IMPORTS HERE to anything other than builtin python libraries
# this file is imported by archivebox/__init__.py
# and any imports here will be imported by EVERYTHING else
# so this file should only be used for pure python checks
# that don't need to import other parts of ArchiveBox

# if a check needs to import other parts of ArchiveBox,
# the imports should be done inside the check function
# and you should make sure if you need to import any django stuff
# that the check is called after django.setup() has been called


def check_data_folder() -> None:
    from archivebox import DATA_DIR, ARCHIVE_DIR
    from archivebox.config import CONSTANTS
    from archivebox.config.paths import create_and_chown_dir, get_or_create_working_tmp_dir, get_or_create_working_lib_dir

    archive_dir_exists = os.path.isdir(ARCHIVE_DIR)
    if not archive_dir_exists:
        print("[red][X] No archivebox index found in the current directory.[/red]", file=sys.stderr)
        print(f"    {DATA_DIR}", file=sys.stderr)
        print(file=sys.stderr)
        print("    [violet]Hint[/violet]: Are you running archivebox in the right folder?", file=sys.stderr)
        print("        cd path/to/your/archive/folder", file=sys.stderr)
        print("        archivebox [command]", file=sys.stderr)
        print(file=sys.stderr)
        print("    [violet]Hint[/violet]: To create a new archive collection or import existing data in this folder, run:", file=sys.stderr)
        print("        archivebox init", file=sys.stderr)
        raise SystemExit(2)

    # Create data dir subdirs
    create_and_chown_dir(CONSTANTS.SOURCES_DIR)
    create_and_chown_dir(CONSTANTS.PERSONAS_DIR / "Default")
    create_and_chown_dir(CONSTANTS.LOGS_DIR)
    # create_and_chown_dir(CONSTANTS.CACHE_DIR)

    # Create /tmp and /lib dirs if they don't exist
    get_or_create_working_tmp_dir(autofix=True, quiet=False)
    get_or_create_working_lib_dir(autofix=True, quiet=False)

    # Check data dir permissions, /tmp, and /lib permissions
    check_data_dir_permissions()


def check_migrations():
    from archivebox import DATA_DIR
    from archivebox.misc.db import list_migrations

    pending_migrations = [name for status, name in list_migrations() if not status]
    is_migrating = any(arg in sys.argv for arg in ["makemigrations", "migrate", "init"])

    if pending_migrations and not is_migrating:
        print("[red][X] This collection was created with an older version of ArchiveBox and must be upgraded first.[/red]")
        print(f"    {DATA_DIR}", file=sys.stderr)
        print(file=sys.stderr)
        print(
            f"    [violet]Hint:[/violet] To upgrade it to the latest version and apply the {len(pending_migrations)} pending migrations, run:",
            file=sys.stderr,
        )
        print("        archivebox init", file=sys.stderr)
        raise SystemExit(3)


def check_io_encoding():
    PYTHON_ENCODING = (sys.__stdout__ or sys.stdout or sys.__stderr__ or sys.stderr).encoding.upper().replace("UTF8", "UTF-8")

    if PYTHON_ENCODING != "UTF-8":
        print(
            f"[red][X] Your system is running python3 scripts with a bad locale setting: {PYTHON_ENCODING} (it should be UTF-8).[/red]",
            file=sys.stderr,
        )
        print('    To fix it, add the line "export PYTHONIOENCODING=UTF-8" to your ~/.bashrc file (without quotes)', file=sys.stderr)
        print('    Or if you\'re using ubuntu/debian, run "dpkg-reconfigure locales"', file=sys.stderr)
        print("")
        print("    Confirm that it's fixed by opening a new shell and running:", file=sys.stderr)
        print('        python3 -c "import sys; print(sys.stdout.encoding)"   # should output UTF-8', file=sys.stderr)
        raise SystemExit(2)

    # # hard errors: check python version
    # if sys.version_info[:3] < (3, 10, 0):
    #     print('[red][X] Python version is not new enough: {sys.version} (>3.10 is required)[/red]', file=sys.stderr)
    #     print('    See https://github.com/ArchiveBox/ArchiveBox/wiki/Troubleshooting#python for help upgrading your Python installation.', file=sys.stderr)
    #     raise SystemExit(2)

    # # hard errors: check django version
    # if int(django.VERSION[0]) < 5:
    #     print('[red][X] Django version is not new enough: {django.VERSION[:3]} (>=5.0 is required)[/red]', file=sys.stderr)
    #     print('    Upgrade django using pip or your system package manager: pip3 install --upgrade django', file=sys.stderr)
    #     raise SystemExit(2)


def check_not_root():
    from archivebox.config.permissions import IS_ROOT, IN_DOCKER

    attempted_command = " ".join(sys.argv[1:]) if len(sys.argv) > 1 else ""
    is_getting_help = "-h" in sys.argv or "--help" in sys.argv or "help" in sys.argv
    is_getting_version = "--version" in sys.argv or "version" in sys.argv
    is_installing = "setup" in sys.argv or "install" in sys.argv

    if IS_ROOT and not (is_getting_help or is_getting_version or is_installing):
        print("[red][!] ArchiveBox should never be run as root![/red]", file=sys.stderr)
        print("    For more information, see the security overview documentation:", file=sys.stderr)
        print("        https://github.com/ArchiveBox/ArchiveBox/wiki/Security-Overview#do-not-run-as-root", file=sys.stderr)

        if IN_DOCKER:
            print(
                "[red][!] When using Docker, you must run commands with [green]docker run[/green] instead of [yellow3]docker exec[/yellow3], e.g.:",
                file=sys.stderr,
            )
            print("        docker compose run archivebox {attempted_command}", file=sys.stderr)
            print(f"        docker run -it -v $PWD/data:/data archivebox/archivebox {attempted_command}", file=sys.stderr)
            print("        or:", file=sys.stderr)
            print(
                f'        docker compose exec --user=archivebox archivebox /bin/bash -c "archivebox {attempted_command}"',
                file=sys.stderr,
            )
            print(
                f'        docker exec -it --user=archivebox <container id> /bin/bash -c "archivebox {attempted_command}"',
                file=sys.stderr,
            )
        raise SystemExit(2)


def check_not_inside_source_dir():
    """Prevent running ArchiveBox from inside its source directory (would pollute repo with data files)."""
    cwd = Path(os.getcwd()).resolve()
    is_source_dir = (cwd / "archivebox" / "__init__.py").exists() and (cwd / "pyproject.toml").exists()
    data_dir_set_elsewhere = os.environ.get("DATA_DIR", "").strip() and Path(os.environ["DATA_DIR"]).resolve() != cwd
    is_testing = "pytest" in sys.modules or "unittest" in sys.modules

    if is_source_dir and not data_dir_set_elsewhere and not is_testing:
        raise SystemExit("[!] Cannot run from source dir, set DATA_DIR or cd to a data folder first")


def check_data_dir_permissions():
    from archivebox import DATA_DIR
    from archivebox.misc.logging import STDERR
    from archivebox.config.permissions import ARCHIVEBOX_USER, ARCHIVEBOX_GROUP, DEFAULT_PUID, DEFAULT_PGID, IS_ROOT, USER
    from archivebox.config.paths import get_or_create_working_tmp_dir, get_or_create_working_lib_dir

    data_dir_stat = Path(DATA_DIR).stat()
    data_dir_uid, data_dir_gid = data_dir_stat.st_uid, data_dir_stat.st_gid
    data_owned_by_root = data_dir_uid == 0

    # data_owned_by_default_user = data_dir_uid == DEFAULT_PUID or data_dir_gid == DEFAULT_PGID
    data_owner_doesnt_match = (data_dir_uid != ARCHIVEBOX_USER and data_dir_gid != ARCHIVEBOX_GROUP) if not IS_ROOT else False
    data_not_writable = not (os.path.isdir(DATA_DIR) and os.access(DATA_DIR, os.W_OK))
    if data_owned_by_root:
        STDERR.print(
            "\n[yellow]:warning: Warning: ArchiveBox [blue]DATA_DIR[/blue] is currently owned by [red]root[/red], it must be changed before archiving can run![/yellow]",
        )
    elif data_owner_doesnt_match or data_not_writable:
        STDERR.print(
            f"\n[yellow]:warning: Warning: ArchiveBox [blue]DATA_DIR[/blue] is currently owned by [red]{data_dir_uid}:{data_dir_gid}[/red], but ArchiveBox user is [blue]{ARCHIVEBOX_USER}:{ARCHIVEBOX_GROUP}[/blue] ({USER})! (ArchiveBox may not be able to write to the data dir)[/yellow]",
        )

    if data_owned_by_root or data_owner_doesnt_match or data_not_writable:
        STDERR.print(
            f"[violet]Hint:[/violet] Change the current ownership [red]{data_dir_uid}[/red]:{data_dir_gid} (PUID:PGID) to a non-root user & group that will run ArchiveBox, e.g.:",
        )
        STDERR.print(f"    [grey53]sudo[/grey53] chown -R [blue]{DEFAULT_PUID}:{DEFAULT_PGID}[/blue] {DATA_DIR.resolve()}")
        STDERR.print()
        STDERR.print("[blue]More info:[/blue]")
        STDERR.print(
            "    [link=https://github.com/ArchiveBox/ArchiveBox#storage-requirements]https://github.com/ArchiveBox/ArchiveBox#storage-requirements[/link]",
        )
        STDERR.print(
            "    [link=https://github.com/ArchiveBox/ArchiveBox/wiki/Security-Overview#permissions]https://github.com/ArchiveBox/ArchiveBox/wiki/Security-Overview#permissions[/link]",
        )
        STDERR.print(
            "    [link=https://github.com/ArchiveBox/ArchiveBox/wiki/Configuration#puid--pgid]https://github.com/ArchiveBox/ArchiveBox/wiki/Configuration#puid--pgid[/link]",
        )
        STDERR.print(
            "    [link=https://github.com/ArchiveBox/ArchiveBox/wiki/Troubleshooting#filesystem-doesnt-support-fsync-eg-network-mounts]https://github.com/ArchiveBox/ArchiveBox/wiki/Troubleshooting#filesystem-doesnt-support-fsync-eg-network-mounts[/link]",
        )

    from archivebox.config.common import STORAGE_CONFIG

    try:
        tmp_dir = get_or_create_working_tmp_dir(autofix=True, quiet=True) or STORAGE_CONFIG.TMP_DIR
    except Exception:
        tmp_dir = STORAGE_CONFIG.TMP_DIR

    try:
        lib_dir = get_or_create_working_lib_dir(autofix=True, quiet=True) or STORAGE_CONFIG.LIB_DIR
    except Exception:
        lib_dir = STORAGE_CONFIG.LIB_DIR

    # Check /tmp dir permissions
    check_tmp_dir(tmp_dir, throw=False, must_exist=True)

    # Check /lib dir permissions
    check_lib_dir(lib_dir, throw=False, must_exist=True)

    os.umask(0o777 - int(STORAGE_CONFIG.DIR_OUTPUT_PERMISSIONS, base=8))


def check_tmp_dir(tmp_dir=None, throw=False, quiet=False, must_exist=True):
    from archivebox.config.paths import assert_dir_can_contain_unix_sockets, dir_is_writable, get_or_create_working_tmp_dir
    from archivebox.misc.logging import STDERR
    from archivebox.misc.logging_util import pretty_path
    from archivebox.config.permissions import ARCHIVEBOX_USER, ARCHIVEBOX_GROUP
    from archivebox.config.common import STORAGE_CONFIG

    tmp_dir = tmp_dir or STORAGE_CONFIG.TMP_DIR
    socket_file = tmp_dir.absolute().resolve() / "supervisord.sock"

    if not must_exist and not os.path.isdir(tmp_dir):
        # just check that its viable based on its length (because dir may not exist yet, we cant check if its writable)
        return len(f"file://{socket_file}") <= 96

    tmp_is_valid = False
    allow_no_unix_sockets = os.environ.get("ARCHIVEBOX_ALLOW_NO_UNIX_SOCKETS", "").lower() in ("1", "true", "yes")
    try:
        tmp_is_valid = dir_is_writable(tmp_dir)
        if not allow_no_unix_sockets:
            tmp_is_valid = tmp_is_valid and assert_dir_can_contain_unix_sockets(tmp_dir)
        assert tmp_is_valid, f"ArchiveBox user PUID={ARCHIVEBOX_USER} PGID={ARCHIVEBOX_GROUP} is unable to write to TMP_DIR={tmp_dir}"
        assert len(f"file://{socket_file}") <= 96, (
            f"ArchiveBox TMP_DIR={tmp_dir} is too long, dir containing unix socket files must be <90 chars."
        )
        return True
    except Exception as e:
        if not quiet:
            STDERR.print()
            ERROR_TEXT = "\n".join(
                (
                    "",
                    f"[red]:cross_mark: ArchiveBox is unable to use TMP_DIR={pretty_path(tmp_dir)}[/red]",
                    f"   [yellow]{e}[/yellow]",
                    "",
                    "[blue]Info:[/blue] [grey53]The TMP_DIR is used for the supervisord unix socket file and other temporary files.",
                    "  - It [red]must[/red] be on a local drive (not inside a docker volume, remote network drive, or FUSE mount).",
                    f"  - It [red]must[/red] be readable and writable by the ArchiveBox user (PUID={ARCHIVEBOX_USER}, PGID={ARCHIVEBOX_GROUP}).",
                    "  - It [red]must[/red] be a *short* path (less than 90 characters) due to UNIX path length restrictions for sockets.",
                    "  - It [yellow]should[/yellow] be able to hold at least 200MB of data (in-progress downloads can be large).[/grey53]",
                    "",
                    "[violet]Hint:[/violet] Fix it by setting TMP_DIR to a path that meets these requirements, e.g.:",
                    f"      [green]archivebox config --set TMP_DIR={get_or_create_working_tmp_dir(autofix=False, quiet=True) or '/tmp/archivebox'}[/green]",
                    "",
                ),
            )
            STDERR.print(
                Panel(
                    ERROR_TEXT,
                    expand=False,
                    border_style="red",
                    title="[red]:cross_mark: Error with configured TMP_DIR[/red]",
                    subtitle="Background workers may fail to start until fixed.",
                ),
            )
            STDERR.print()
        if throw:
            raise OSError(f"TMP_DIR={tmp_dir} is invalid, ArchiveBox is unable to use it and the server will fail to start!") from e
    return False


def check_lib_dir(lib_dir: Path | None = None, throw=False, quiet=False, must_exist=True):
    from archivebox.config.permissions import ARCHIVEBOX_USER, ARCHIVEBOX_GROUP
    from archivebox.misc.logging import STDERR
    from archivebox.misc.logging_util import pretty_path
    from archivebox.config.paths import dir_is_writable, get_or_create_working_lib_dir
    from archivebox.config.common import STORAGE_CONFIG

    lib_dir = lib_dir or STORAGE_CONFIG.LIB_DIR

    # assert lib_dir == STORAGE_CONFIG.LIB_DIR, "lib_dir is not the same as the one in the flat config"

    if not must_exist and not os.path.isdir(lib_dir):
        return True

    lib_is_valid = False
    try:
        lib_is_valid = dir_is_writable(lib_dir)
        assert lib_is_valid, f"ArchiveBox user PUID={ARCHIVEBOX_USER} PGID={ARCHIVEBOX_GROUP} is unable to write to LIB_DIR={lib_dir}"
        return True
    except Exception as e:
        if not quiet:
            STDERR.print()
            ERROR_TEXT = "\n".join(
                (
                    "",
                    f"[red]:cross_mark: ArchiveBox is unable to use LIB_DIR={pretty_path(lib_dir)}[/red]",
                    f"   [yellow]{e}[/yellow]",
                    "",
                    "[blue]Info:[/blue] [grey53]The LIB_DIR is used to store ArchiveBox auto-installed plugin library and binary dependencies.",
                    f"  - It [red]must[/red] be readable and writable by the ArchiveBox user (PUID={ARCHIVEBOX_USER}, PGID={ARCHIVEBOX_GROUP}).",
                    "  - It [yellow]should[/yellow] be on a local (ideally fast) drive like an SSD or HDD (not on a network drive or external HDD).",
                    "  - It [yellow]should[/yellow] be able to hold at least 1GB of data (some dependencies like Chrome can be large).[/grey53]",
                    "",
                    "[violet]Hint:[/violet] Fix it by setting LIB_DIR to a path that meets these requirements, e.g.:",
                    f"      [green]archivebox config --set LIB_DIR={get_or_create_working_lib_dir(autofix=False, quiet=True) or '/usr/local/share/archivebox'}[/green]",
                    "",
                ),
            )
            STDERR.print(
                Panel(
                    ERROR_TEXT,
                    expand=False,
                    border_style="red",
                    title="[red]:cross_mark: Error with configured LIB_DIR[/red]",
                    subtitle="[yellow]Dependencies may not auto-install properly until fixed.[/yellow]",
                ),
            )
            STDERR.print()
        if throw:
            raise OSError(f"LIB_DIR={lib_dir} is invalid, ArchiveBox is unable to use it and dependencies will fail to install.") from e
    return False