#!/bin/sh

# The MIT License (MIT)
#
# Copyright © 2020-2025 pacman64
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the “Software”), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.


# gbm [good...] [bad...] [meh...]
#
# Good, Bad, Meh colors lines using up to 3 regular expressions, keeping all
# other input lines verbatim.


# handle leading options
# case "$1" in
#     -h|--h|-help|--help)
#         awk '/^# +gbm /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
#         exit 0
#     ;;
# esac

good="$1"
bad="$2"
meh="$3"
[ $# -gt 0 ] && shift
[ $# -gt 0 ] && shift
[ $# -gt 0 ] && shift

awk '
BEGIN {
    gotgood = ARGC > 1 && ARGV[1] != ""
    gotbad = ARGC > 2 && ARGV[2] != ""
    gotmeh = ARGC > 3 && ARGV[3] != ""
    good = ARGV[1]
    bad = ARGV[2]
    meh = ARGV[3]
    delete ARGV[1]
    delete ARGV[2]
    delete ARGV[3]
}

gotgood && $0 ~ good {
    # code to use a color-blind-friendlier blue, instead of green
    # gsub(/\x1b\[0m/, "\x1b[0m\x1b[38;2;0;95;215m")
    # printf "\x1b[38;2;0;95;215m%s\x1b[0m\n", $0
    gsub(/\x1b\[0m/, "\x1b[0m\x1b[38;2;0;135;95m")
    printf "\x1b[38;2;0;135;95m%s\x1b[0m\n", $0; fflush()
    next
}

gotbad && $0 ~ bad {
    gsub(/\x1b\[0m/, "\x1b[0m\x1b[38;2;204;0;0m")
    printf "\x1b[38;2;204;0;0m%s\x1b[0m\n", $0; fflush()
    next
}

gotmeh && $0 ~ meh {
    gsub(/\x1b\[0m/, "\x1b[0m\x1b[38;2;168;168;168m")
    printf "\x1b[38;2;168;168;168m%s\x1b[0m\n", $0; fflush()
    next
}

{ print; fflush() }
' "${good}" "${bad}" "${meh}" "$@"