Invoke a PowerShell script in your iTerm2 Status Bar

invokePowerShell.py

#!/usr/bin/env python3.7

import iterm2
import asyncio
import subprocess

# Icons are base64-encoded PNGs. The first one is 32x34 and is used for Retina
# displays. The second is 16x32 and is used for non-Retina displays.
ICON2X = "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"

ICON = "iVBORw0KGgoAAAANSUhEUgAAABAAAAARCAYAAADUryzEAAAABGdBTUEAALGPC/xhBQAAAK9JREFUOMtjYKAxqIRiskE9FBMFvIDYEYgZoXxJIDaHYkmoGEjOCYg9sRnABMQWQKwDxLuA+BoQz4Ti61AxkEZ+qFqsgAuIbwNxGZoiJqjYbaganKANiOfikZ8LVYMTnAFiYzzyxlA1GFH1GYnmwWMAD5pacBSzQiVYSXABsh7qhgHFsaAExHZ40gFIThGX5iAg1gBiZmiKk4T62RgpJYLkYoBYd3BmJmyAFVtUIQMAZuAlWgiKRrsAAAAASUVORK5CYII="

async def foo(connection):
    app = await iterm2.async_get_app(connection)

    icon = iterm2.StatusBarComponent.Icon(1, ICON)
    icon2x = iterm2.StatusBarComponent.Icon(2, ICON2X)

    # Register the status bar component.
    component = iterm2.StatusBarComponent(
        short_description="Invoke PowerShell",
        detailed_description="Invokes a PowerShell script.",
        knobs=[iterm2.statusbar.StringKnob("Script", "Enter script here...", "'Hello World!'", "Script")],
        exemplar=">_",
        update_cadence=None,
        identifier="com.tylerleonhardt.pwsh",
        icons=[icon,icon2x])

    @iterm2.StatusBarRPC
    async def bar(knobs):
        """Invoke PowerShell and grab the stdout."""
        proc = subprocess.run(["/usr/local/bin/pwsh", "-NoLogo", "-NoProfile", "-c", knobs["Script"]], capture_output=True)
        if proc.stdout:
            return proc.stdout.rstrip().decode('ascii')
        return "Failed..."

    # Register the component.
    await component.async_register(connection, bar)
    asyncio.sleep(5)

iterm2.run_forever(foo)