#!/usr/bin/env bash

## Copy a password using the password manager `pass` and open the URL specified
## in the password's file (e.g., `url: https//example.com/`). The username in
## the password's file (e.g., `user: johnsmith`) is appended to the URL as a
## fragment in case it needs to be cut and pasted.
##
## Usage: pass-use [<options>]
##
## Options:
##   -b <browser>   Open the URL using this web browser unless a browser is
##                  specified in the password's file (e.g., `browser: firefox`).
##                  If this option is excluded and no browser is specified in
##                  the password's file, the default browser will be used.
##
## Dependencies: fzf, GNU coreutils, GNU sed, pass, ripgrep, xdg-utils

set -euo pipefail
shopt -s inherit_errexit

die() { echo "$(basename "$0"): $1" >&2; exit 1; }

[[ " $* " =~ ' --help ' ]] && sed -n 's/^## \?//p' "$0" && exit

while getopts b: opt; do
  case $opt in
    b) browser=$OPTARG ;;
    *) exit 1 ;;
  esac
done
shift "$(( OPTIND - 1 ))"

# Get password name.
cd "${PASSWORD_STORE_DIR:-~/.password-store}"
password_name=$(fzf | sed 's/\.gpg$//')

# Copy password.
pass show -c "$password_name"

# Open URL.
file_text=$(pass show "$password_name")
url=$(rg -r '$1' '^url: (.*)' <<< "$file_text") || die 'URL not found'
url+=#$(sed -n 's/^user: //p' <<< "$file_text") # Append username to URL.
browser=$(rg -r '$1' '^browser: (.*)' <<< "$file_text" || echo "${browser:-xdg-open}")
type "${browser/ *}" &> /dev/null || die "command not found: $browser"
$browser "$url" &> /dev/null &