#! /bin/bash

# (Using bash or zsh for the <() process substitution feature...)

#

# Sample script using madonctl (0.4+), use --help for usage.

# This script uses the 'combine' utility (from the moreutils package in

# Debian).

#

# MiKael, 2017-04

set -e

usage() {

    echo "Usage: $0 following_only|followers_only|both"

}

# Check madonctl is in the PATH

command -v madonctl >/dev/null 2>&1 || {

    echo "Error: madonctl not found">&2

    exit 1

}

# Check combine command (from the moreutils package)

command -v combine >/dev/null 2>&1  || {

    echo "Error: combine not found">&2

    exit 1

}

# Get our account ID (not needed anymore as of 0.4.0)

# me="$(madonctl account show --template '{{.id}}')"

# $1 = following/followers

getAccountFollow() {

    TEMPL='{{.id}}{{"\n"}}'

    madonctl accounts --all "$1" --template "$TEMPL"

}

displayAccount() {

    id=$1

    madonctl account show --account-id "$id" \

        --template '{{printf "%s\t%s\n" .acct .display_name}}'

}

combineOutput() {

    case $1 in

        (both)

            combine <(getAccountFollow following) and <(getAccountFollow followers)

            ;;

        (following_only)

            combine <(getAccountFollow following) not <(getAccountFollow followers)

            ;;

        (followers_only)

            combine <(getAccountFollow followers) not <(getAccountFollow following)

            ;;

    esac

}

case $1 in

    (both|following_only|followers_only)

        combineOutput "$1" | while read acccountID; do

            displayAccount "$acccountID"

        done

        ;;

    (help|--help|-h)

        usage

        ;;

    (*)

        usage>&2

        exit 1

esac