#!/bin/bash

html_escape() {
    # https://stackoverflow.com/questions/12873682/short-way-to-escape-html-in-bash
    sed 's/&/\&amp;/g; s/</\&lt;/g; s/>/\&gt;/g'
}

beautiful_html() {
    echo '<meta charset="utf-8" />'
    echo '<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/github-markdown-css/3.0.1/github-markdown.css">'
    echo '<article class="markdown-body">'
    cat
    echo '</article>'

    # Awesome work from http://tholman.com/github-corners/
    cat <<EOF
<a href="https://github.com/cburgmer/json-path-comparison" class="github-corner" aria-label="View source on GitHub"><svg width="80" height="80" viewBox="0 0 250 250" style="fill:#151513; color:#fff; position: absolute; top: 0; border: 0; right: 0;" aria-hidden="true"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path></svg></a><style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style>
EOF
}

pretty_implementation_name() {
    local implementation="$1"
    local language
    local library
    language="$(sed "s/\([^_]*\)_.*/\1/" <<< "$implementation")"
    library="$(sed "s/[^_]*_\(.*\)/\1/" <<< "$implementation")"
    echo "${language} (${library})"
}

capitalize() {
    local s="$1"
    echo "$(tr '[:lower:]' '[:upper:]' <<< "${s:0:1}")${s:1}"
}

pretty_query_name() {
    local q="$1"

    capitalize "$q" | tr '_' ' '
}

query_result_status() {
    local result="$1"
    head -1 < "$result"
}

is_query_ok() {
    local result="$1"
    test "$(query_result_status "$result")" = "OK"
}

is_query_error() {
    local result="$1"
    test "$(query_result_status "$result")" = "ERROR"
}

is_query_not_supported() {
    local result="$1"
    test "$(query_result_status "$result")" = "NOT_SUPPORTED"
}

is_query_result_not_found() {
    local result="$1"
    test "$(query_result_status "$result")" = "NOT_FOUND"
}

query_result_payload() {
    local result="$1"
    tail -n +2 < "$result"
}

all_query_result() {
    local result="$1"
    if is_query_result_not_found "$result"; then
        echo "NOT_FOUND"
        return
    fi

    if is_query_not_supported "$result"; then
        echo "NOT_SUPPORTED"
        return
    fi

    query_result_payload "$result"
}

implementation_returns_scalar_for_single_possible_match() {
    local implementation="$1"
    test -f "./implementations/${implementation}/SINGLE_POSSIBLE_MATCH_RETURNED_AS_SCALAR"
}

implementation_returns_not_found_as_error() {
    local implementation="$1"
    test -f "./implementations/${implementation}/NOT_FOUND_RETURNED_AS_ERROR"
}

implementation_returns_not_found_for_scalar_queries_as_error() {
    local implementation="$1"
    test -f "./implementations/${implementation}/NOT_FOUND_RETURNED_AS_ERROR_FOR_SCALAR"
}
