#!/bin/bash

PAGEINDEX_PATH="data/pageindex/"

PAGE_PATH="data/pages/"
PAGE_NAME_PATH="data/pages_by_name/"

FORCE_FETCH="$2"
CATEGORY="${1//[ \/]/_}"

doRequest () {
  docker run --rm curl-impersonate /build/out/curl_ff95 --max-time 10 --silent --compressed "https://en.touhouwiki.net/${1}"
  sleep 1
}

doUrlEncode () {
  python3 -c "import urllib.parse; print(urllib.parse.quote_plus('''${1}'''))"
}

doPageRequest () {
  doRequest "index.php?curid=${1}&action=raw"
}

isValidPageResult () {
  if [[ $(cat "$1") != "" && $(grep '<html' "$1") == "" ]]; then
    echo "yes"
    return
  fi
  echo "no"
  return
}

fetchPage () {
  RESULT_PATH="${PAGE_PATH}${1}.wiki"

  if [[ -f "${RESULT_PATH}" ]]; then
    if [[ "$FORCE_FETCH" != "yes" ]]; then
      echo "${RESULT_PATH}"
      return 0
    fi
  fi

  doPageRequest "${1}" > .mirror.tmp.wiki
  if [[ $(isValidPageResult .mirror.tmp.wiki) == "yes" ]]; then
    mv .mirror.tmp.wiki "${RESULT_PATH}"
    echo "${RESULT_PATH}"
    return 0
  fi

  return 1
}

for f in "${PAGEINDEX_PATH}${CATEGORY}/"*.json; do
  echo "working on page ${f}"
  jq -c -r '.query.categorymembers[]' "$f" | while read -r item; do
    pageid=$(jq -r '.pageid' <<< "$item")
    title=$(jq -r '.title' <<< "$item")
    if [[ "${title}" == Category:* || "${title}" == User:* || "${title}" == File:* ]]; then
      continue
    fi
    echo "Fetch page ${pageid} title $title"
    RESULT_PATH=$(fetchPage "${pageid}" "${title}")

    if [[ "${RESULT_PATH}" != "" ]]; then
      linkname="${PAGE_NAME_PATH}${title//[ \/]/_}.wiki"
      rm "${linkname}" 2>/dev/null
      ln -s "../pages/${pageid}.wiki" "${linkname}"
    fi
  done
done