quote

#!/bin/bash

# sudo apt-get install jq

endpoint=https://api.quotable.io/random

while getopts v opt; do
    case "${opt}" in
        v) verbose=1;;
    esac
done

root=$HOME
[ ! -z "$QUOTE_ROOT" ] && root=$QUOTE_ROOT

json=$root/quote.json
log=$root/quote.log

# Shows the current time.
now() {
    date "+%Y/%m/%d %H:%M:%S"
}

# Generates a new quote then saves into $json.
generate() {
    [ -f "$(which gen-quote)" ] && gen-quote
}

# Counts total characters in the $json.
count() {
    text="$(cat $json)" && echo "${#text}"
}

# Returns 0 if the $json is valid.
status() {
    cat $json | jq -e . >/dev/null 2>&1; echo "${PIPESTATUS[1]}"
}

# Parses something from $json.
parse() {
    jq -e $@ $json 2>/dev/null
}

help() {
    echo "Fetch a random quote from $endpoint and show it."
    echo ""
    echo "Usage: QUOTE_ROOT=[dir] quote"
    echo "    dir    the path of the directory for saving the quote (default: $HOME)"
    echo ""
    echo "Dependencies:"
    echo "    jq from apt-get"
}

[ -f "$(which jq)" ] && [ ! -f "$json" ] && generate
[ -f "$(which jq)" ] && [ -f "$json" ] && \
    [ "$(count)" -ne "0" ] && [ "$(status)" = "0" ] && \
        parse '.content' && \
        echo -n "- " && \
        parse -r '.author' || (test ! -z $verbose && help)