#!/bin/bash
set -e

# generates nginx.d.ts from the latest version of njs-types published on npm

test -d nginx/types && rm -r nginx/types
mkdir nginx/types
test -f nginx/nginx.d.ts && rm nginx/nginx.d.ts

doc=$(curl https://registry.npmjs.org/njs-types)
ver=$(echo "$doc" | jq -r '."dist-tags".latest')

echo "downloading $ver"
url=$(echo "$doc" | jq -r .versions.'"'"$ver"'"'.dist.tarball)
curl "$url" | tar xzC nginx/types --strip-components=1

echo concatenating
for file in nginx/types/*.d.ts nginx/types/**/*.d.ts; do
    name="${file#nginx/types/}"
    [ "$name" = "index.d.ts" ] && continue # index.d.ts is just references. lame!
    {
        echo -e "// $name\n"
        sed 's|^/// <reference .*$||' "$file" # filter out xml references
        echo
    } >> nginx/nginx.d.ts
done
rm -r nginx/types

if command -v prettier >/dev/null; then
    echo formatting
    prettier --write nginx/nginx.d.ts
fi