ArchiveBox/archivebox/extractors/screenshot.py

__package__ = 'archivebox.extractors'

from pathlib import Path
from typing import Optional

from ..index.schema import Link, ArchiveResult, ArchiveOutput, ArchiveError
from ..system import run, chmod_file
from ..util import enforce_types, is_static_file
from ..logging_util import TimedProgress


def get_output_path():
    return 'screenshot.png'


@enforce_types
def should_save_screenshot(link: Link, out_dir: Optional[Path]=None, overwrite: Optional[bool]=False) -> bool:
    from plugins_extractor.chrome.apps import CHROME_CONFIG
    
    if is_static_file(link.url):
        return False

    out_dir = out_dir or Path(link.link_dir)
    if not overwrite and (out_dir / get_output_path()).exists():
        return False

    return CHROME_CONFIG.SAVE_SCREENSHOT

@enforce_types
def save_screenshot(link: Link, out_dir: Optional[Path]=None, timeout: int=60) -> ArchiveResult:
    """take screenshot of site using chrome --headless"""
    
    from plugins_extractor.chrome.apps import CHROME_CONFIG, CHROME_BINARY
    CHROME_BIN = CHROME_BINARY.load()
    assert CHROME_BIN.abspath and CHROME_BIN.version

    out_dir = out_dir or Path(link.link_dir)
    output: ArchiveOutput = get_output_path()
    cmd = [
        str(CHROME_BIN.abspath),
        *CHROME_CONFIG.chrome_args(),
        '--screenshot',
        link.url,
    ]
    status = 'succeeded'
    timer = TimedProgress(timeout, prefix='      ')
    try:
        result = run(cmd, cwd=str(out_dir), timeout=timeout, text=True)

        if result.returncode:
            hints = (result.stderr or result.stdout)
            raise ArchiveError('Failed to save screenshot', hints)

        chmod_file(output, cwd=str(out_dir))
    except Exception as err:
        status = 'failed'
        output = err
        CHROME_BINARY.chrome_cleanup_lockfile()
    finally:
        timer.end()

    return ArchiveResult(
        cmd=cmd,
        pwd=str(out_dir),
        cmd_version=str(CHROME_BIN.version),
        output=output,
        status=status,
        **timer.stats,
    )