#!/bin/bash

PROGNAME=${0##*/}
VERSION="0.0.1"

error_exit() {
    printf "%s: %s\n" "$PROGNAME" "${1:-"Unknown Error"}" >&2
    exit 1
}

usage() {
	printf "usage: %s [OPTIONS] COMMAND [ARGS]\n" "$PROGNAME" 
	printf "Simple client for twtxt\n"
	printf "Options:\n
  -c, --config PATH  Specify a custom config file location.
  -v, --verbose      Enable verbose output for debugging purposes.
  --version          Show the version and exit.
  -h, --help         Show this message and exit.

Commands:
  init        Setting up twtxt.
  config      Get or set config item.
  follow      Add a new source to your followings.
  following   Return the list of sources you’re following.
  timeline    Retrieve your personal timeline.
  tweet       Append a new tweet to your twtxt file.
  unfollow    Remove an existing source from your...
  view        Show feed of given source.
  reg list    Show registers
  reg add     Add your twtxt to registry
  reg users   List users on the registry
  reg twts    Fetch recent tweets from registry
  reg mentions search for mentions by url
  reg tag     Search for tags
  "
  
}

read_config () {
	declare -A v=()
	while read -r var value; do 
		v[$var]=$value
	done < $config/registry
}
case $1 in
	-h | --help)
		usage; exit ;;
	-* | --*)
        	usage; error_exit "unknown option $1" ;;
	init)
		read -p "Your desired nickname [$USER]: " nick
		nick=${nick:-"$USER"}
		read -p "Type path to your twtxt [/home/$USER/twtxt.txt]: " path_to_twtxt
		path_to_twtxt=${path_to_twtxt:-"/home/$USER/twtxt.txt"}
		echo "" >> $path_to_twtxt
		read -p "Type path to your twtxt config folder [/home/$USER/.config/twtxt-c/]: " config
		config=${config:-"/home/$USER/.config/twtxt-c/"}
		mkdir -p $config
		read -p "URL to twtxt [https://example.com/twtxt.txt]: " url
		url=${url:-"https://example.com/twtxt.txt"}
		printf "[twtxt]\n nick = %s\n twtfile = %s\n url = %s\n" "$nick" "$path_to_twtxt" "$url" >> $config/config
		printf "https://twtxt.envs.net/api/plain/\nhttps://twtxt.tilde.institute/api/plain/\n" > $config/registry
		;;
	tweet)
		export config=/home/$USER/.config/twtxt-c/config
		printf "%s\t%s\n" "$(date +'%FT%T%:z')" "$2" >> $(awk '/twtfile/ {print $3}' $config)
		;;
	view)
		curl $2 2>/dev/null | grep -v "#" | awk 'BEGIN { FS = "\t" } ; {print $2}' 
		;;
	reg) 
		case $2 in
			list)
			cat /home/$USER/.config/twtxt-c/registry 
			;;
			add)
				config=/home/$USER/.config/twtxt-c/
				declare -A v=()
				while read -r line; do 
					var=$(echo $line | awk '{print $1}' )
					value=$(echo $line | awk '{print $3}' )
					v[$var]=$value
				done < $config/config
				req="https://twtxt.tilde.institute/api/plain/users?url=${v[url]}&nickname=${v[nick]}"
				req2="https://twtxt.envs.net/api/plain/users?url=${v[url]}&nickname=${v[nick]}"
				echo "post these requests:"
				echo "curl -X POST $req"
				echo "curl -X POST $req2"
				#curl -X POST $req
				#curl -X POST $req2
				# I have commented the actual curl request so that I accidentally re-register myself during testing
			;;
			users)
				curl 'https://twtxt.tilde.institute/api/plain/users' 
				curl 'https://twtxt.envs.net/api/plain/users' ;;
			twts)
				curl 'https://twtxt.tilde.institute/api/plain/tweets' 
				curl 'https://twtxt.envs.net/api/plain/tweets'
				;;
			mentions)
				url=$3
				req="https://twtxt.tilde.institute/api/plain/mentions?url=$url"
				req2="https://twtxt.envs.net/api/plain/mentions?url=$url"
				curl $req
				curl $req2
				;;
			tag)
				tag=$3 
				req="https://twtxt.tilde.institute/api/plain/tags/$tag"
				req2="https://twtxt.envs.net/api/plain/tags/$tag"
				curl $req
				curl $req2
				;;
		esac ;;
	*)
		printf "Work in progress\n" ;;
esac