#!/bin/bash
#
# Author: palb91
# Date:   2022
#
# Bash style quick substitution in URL
#
# Usage:
#   substiqute [-t] <replace_string> <new_string>
#
# Option:
#   -t  Open in a new tab
#
# In config.py:
#   bind('gs', 'set-cmd-text -s -- :spawn -u -- substiqute')
#   bind('gS', 'set-cmd-text -s -- :spawn -u -- substiqute -t')
#
# Note:
#   Don't forget to quote replace_string and new_string if there are spaces

set -e

OPEN_IN_TAB=false

# logging
info() { printf 'message-info    "%s"\n' "${*}" >>"${QUTE_FIFO}";           }
warn() { printf 'message-warning "%s"\n' "${*}" >>"${QUTE_FIFO}";           }
err()  { printf 'message-error   "%s"\n' "${*}" >>"${QUTE_FIFO}"; return 1; }


replace() {
    "${OPEN_IN_TAB}"                                                          \
        && printf 'open -t %s\n' "${QUTE_URL/"${1}"/"${2}"}" >>"${QUTE_FIFO}" \
        || printf 'open %s\n'    "${QUTE_URL/"${1}"/"${2}"}" >>"${QUTE_FIFO}"
}


# with a binding like '^', it is possible to do like in bash ^string1^string2
split() {
    case "${1}" in
        *^*) set -- "${1%%\^*}" "${1#*\^}"     ;;
        *)   err 'Unknown substitution format' ;;
    esac
    replace "${@}"
}


# -t open in a new tab... but to replace the string -t with another, use
# `substiqute -- -t anything_else`
case "${1}" in
    -t) OPEN_IN_TAB=true; shift ;;
    --) shift                   ;;
esac


case "${#}" in
    0) err "No substitution in command" ;;
    1) split "${1}"                     ;;
    2) replace "${@}"                   ;;
    *) err "To many arguments"          ;;
esac