#!/usr/bin/env bash
set -euo pipefail

mapfile inputlines <<<"$(elinks 'https://southsidemanagement.com/search-results/?property_type=&maximum_rent=1000&minimum_bedrooms=1&maximum_bedrooms=&furnished=&department=residential-lettings')"


## Collect links

declare -A links
inlinkssection=0
for ((i=0; i<${#inputlines[@]}; i++)); do
  line=$(tr -d $'\n' <<<"${inputlines[$i]}")
  if grep '^\s*Visible links$' <<<"$line" >/dev/null; then
    inlinkssection=1
  elif [[ $inlinkssection -eq 1 ]] && grep '^\s*[0-9][0-9]*\. ' <<<"$line" >/dev/null; then
    linknumber=$(sed 's/^\s*\([0-9]*\)\..*/\1/' <<<"$line")
    linktext=$(sed 's/[^.]*\. //' <<<"$line")
    links[$linknumber]=$linktext
  fi
done


## Collect ads

# 0: before search results
# 1: outside
# 2: in ad
state=0

accum=
adlink=

function writeout() {
  if [[ $state -eq 2 && -n $accum ]]; then
    if [[ -n $adlink ]]; then echo "$accum ($adlink)"; else echo "$accum"; fi
  fi
  accum=
}

for ((i=0; i<${#inputlines[@]}; i++)); do
  line=$(tr -d $'\n' <<<"${inputlines[$i]}")
  if [[ $state -eq 0 && $line = *"Search Results"* ]]; then
    state=1
  elif [[ $state -ge 1 ]] && grep '^\s*•' <<<"$line" >/dev/null; then
    [[ $line != *"["* ]] && break
    writeout
    state=2
    linknumber=$(sed 's/^[^[]*\[\([0-9]*\)\].*/\1/' <<<"$line")
    accum=$(sed 's/^[^]]*]//' <<<"$line")
  elif [[ $state -eq 2 && $line = *REF:* ]]; then
    writeout
    state=1
  elif [[ $state -eq 2 && $line != *"["* && $line != '' ]]; then
    accum="$accum; $(sed 's/^\s*//; s/\s*$//' <<<"$line")"
  fi
done

writeout