#!/usr/bin/env bash
#
# Script name: dm-man
# Description: Search for a manpage or get a random one.
# Dependencies: dmenu, fzf, rofi, alacritty (edit DMTERM in dmscripts config if using another terminal)
# GitLab: https://www.gitlab.com/dwt1/dmscripts
# License: https://www.gitlab.com/dwt1/dmscripts/LICENSE
# Contributors: Derek Taylor
#               Simon Ingelsson

# Set with the flags "-e", "-u","-o pipefail" cause the script to fail
# if certain things happen, which is a good thing.  Otherwise, we can
# get hidden bugs that are hard to discover.
set -euo pipefail

# shellcheck disable=SC1091
source ./_dm-helper.sh 2>/dev/null || source _dm-helper.sh 2>/dev/null

source_dmscripts_configs

if configs_are_different; then
    echo "$(date): configs are different" >>"$DM_CONFIG_DIFF_LOGFILE"
    sleep 1
fi

main() {
    # An array of options to choose.
    local _options=("Search manpages" "Random manpage" "Quit")
    # Piping the above array into dmenu.
    # We use "printf '%s\n'" to format the array one item to a line.
    choice=$(printf '%s\n' "${_options[@]}" | ${MENU} 'Manpages:')

    # What to do when/if we choose one of the options.
    case "$choice" in
    'Search manpages')
        # shellcheck disable=SC2086
        man -k . | awk '{$3="-"; print $0}' \
            | ${MENU} 'Search for:' \
            | awk '{print $2, $1}' | tr -d '()' | xargs $DMTERM man
        ;;
    'Random manpage')
        # shellcheck disable=SC2086
        man -k . | cut -d' ' -f1 | shuf -n 1 \
            | ${MENU} 'Random manpage:' | xargs $DMTERM man
        ;;
    'Quit')
        echo "Program terminated." && exit 0
        ;;
    *)
        exit 0
        ;;
    esac

}

MENU="$(get_menu_program "$@")"
[[ "${BASH_SOURCE[0]}" == "${0}" ]] && main