#! /bin/bash

urlencode() {
    # urlencode <string>

    old_lc_collate=$LC_COLLATE
    LC_COLLATE=C

    local length="${#1}"
    for (( i = 0; i < length; i++ )); do
        local c="${1:$i:1}"
        case $c in
            [a-zA-Z0-9.~_-]) printf '%s' "$c" ;;
            *) printf '%%%02X' "'$c" ;;
        esac
    done

    LC_COLLATE=$old_lc_collate
}

pat="${GITLAB_PAT:-"$(security find-generic-password -a "${USER}" -s GITLAB_PAT -w 2> /dev/null )"}"
project="$(urlencode ${PROJECT:-"data-store/orchestration/runbooks"})"
path="/api/v4/projects/$project/repository/tree"
list() {
   local query="recursive=true&path=$(test -n "$GITLAB_PATH" && echo "$GITLAB_PATH")"
   curl -sS \
      -H "Authorization: Bearer $pat" \
      "https://gitlab-app.eng.qops.net/$path?$query"
}
list_wiki() {
   curl -sS \
      -H "Authorization: Bearer $pat" \
      "https://gitlab-app.eng.qops.net/api/v4/projects/$project/wikis?with_content=0"
}
files=()
trees=("${GITLAB_PATH:-"/"}")
i=0
while [ "$i" -lt "${#trees[@]}" ]; do
   gitlab_path="${trees[i]}"
   echo gitlab_path=$gitlab_path, i=$i, trees=${#trees[@]}, files=${#files[@]}... >&2
   got="$(GITLAB_PATH=$gitlab_path list)"
   for nested_path in $(echo "$got" | jq -c .[] | grep '"type":"tree"' | jq -r .path | while read -r line; do echo "$line" | base64; done | grep .); do
      nested_path="$(echo "$nested_path" | base64 --decode)"
      if echo "${trees[@]}" | grep -q "[ ^]$nested_path[ $]"; then
         continue
      fi
      trees+=("$nested_path")
   done
   for nested_path in $(echo "$got" | jq -c .[] | grep '"type":"blob"' | jq -r .path | while read -r line; do echo "$line" | base64; done | grep .); do
      nested_path="$(echo "$nested_path" | base64 --decode)"
      if echo "${files[@]}" | grep -q "[ ^]$nested_path[ $]"; then
         continue
      fi
      files+=("$nested_path")
   done
   i=$((i+1))
   if ((i>5)); then
      break
   fi
done
for file in "${files[@]}"; do
   echo "gitlab://$file"
done | sort
list_wiki | jq -c .[] | jq -r .title | sed 's/^/wiki:\/\//'