#!/bin/sh
# reads git's request on stdin and prints credentials to stdout
# this script is made for overleaf's non-standard ssh-less git
# but it can be trivially modified for other git http auth

# Setup:
# git config --global credential.helper kasi
# git config --global credential.https://git.overleaf.com/.username git

set -euo pipefail

# read the command from Git
if [ -n "$1" ]; then cmd="$1"; else read cmd || exit 1; fi

case "$cmd" in
	# easier on me to manually handle credentials
	store) ;;
	erase) ;;

	# git is fine with nothing responded to this
	capability*) ;;

	# the only command needed
	get)
		host="$(awk -F'=' '/^host=/ {print $2; exit}' <&0)"
		[ "$host" != "git.overleaf.com" ] && exit 0

		password="$(kasi view 'university/overleaf' | awk '/^Git:/ {print $2}')"
		echo "username=git"
		echo "password=$password"
		;;
	*)
		echo >&2 "Unknown command received by git-credential-kasi: $cmd"
		exit 1
		;;
esac