Automatically setup external monitors

autosetup_external_monitor.py

"""
Automatically setup external monitors at MOIA so that it's to the right of the
internal screen

Prerequisite: [displayplacer](https://github.com/jakehilborn/displayplacer)

```bash
brew tap jakehilborn/jakehilborn && brew install displayplacer
```

Usage
-----
python autosetup_external_monitor.py above
python autosetup_external_monitor.py right
"""
import subprocess
import sys

if __name__ == "__main__":
    if len(sys.argv) > 1 and sys.argv[1] == "above":
        location_external_monitor = (0, -1118)
    else:  # assume to the right
        location_external_monitor = (1729, 0)
    internal_screen = subprocess.run(
        """displayplacer list | grep -B 2 "MacBook built in screen" | grep "Persistent screen id"  | awk -F": " '{print $NF}'""",
        shell=True,
        capture_output=True,
        text=True,
    ).stdout.strip()
    external_screen = subprocess.run(
        """displayplacer list | grep -B 2 "27 inch external" | grep "Persistent screen id"  | awk -F": " '{print $NF}'""",
        shell=True,
        capture_output=True,
        text=True,
    ).stdout.strip()

    displayplacer_command = f"""displayplacer "id:{internal_screen} res:1728x1117 scaling:on"""\
        f"""origin:(0,0) degree:0" "id:{external_screen} res:2560x1440 scaling:on origin:"""\
        f"""({location_external_monitor[0]},{location_external_monitor[1]}) degree:0" """
    subprocess.run(
        displayplacer_command, shell=True, capture_output=True, text=True, check=True
    )