#!/usr/bin/env bash

set -efu

tree-grepper \
  -q elm '([(line_comment) (block_comment)]+)' \
  --format json frontend/src/ | \
  jq 'sort_by(.file)' | \
  jq '.[]' --indent 0 | \
  while read -r line; do
    file=$(echo "$line" | jq -r .file)
    file_type=$(echo "$line" | jq -r .file_type)
    items=$(echo "$line" | \
      jq '.matches[] | { file: $file, file_type: $file_type, match: . }' --arg file "$file" --arg file_type "$file_type" | \
      jq '. | select(.match.text | test("TODO .+"))'
    )
    if test -z "$items"; then
      continue
    fi

    echo "$items" | jq --slurp '.[]' --indent 0 | \
      while read -r item; do
        start_row=$(echo "$item" | jq '.match.start.row')
        end_row=$(echo "$item" | jq '.match.end.row')

        last_commit=$(git --no-pager blame -L "$start_row,$start_row" "$file" -p | \
          head -n 1 | \
          cut -d ' ' -f 1
        )

        text=$(echo "$item" | \
          jq .match.text -r | \
          sed 's/^-- //' | \
          sed 's/^{- //' | \
          sed 's/ -}$//')

        first_commit=$(git --no-pager log --reverse -S"$text" --format=%H | \
          head -n 1)

        created_at=$(git show $first_commit --no-patch --format=%ad)
        heading=$(echo "$text" | sed '/^$/Q' | sed 's/.*TODO //')
        body=$(echo "$text" | tail -n +$(($(echo "$heading" | wc -l) + 2)) | \
          awk -F '[^ ]' '
            NR == 1 {n = length($1)}
            {sub("^ {1,"n"}", ""); print}'
              )

        GREEN='\033[0;32m'
        BOLD=$(tput bold)
        NORMAL=$(tput sgr0)
        NC='\033[0m'
        echo -e "$GREEN--- $created_at --- $file$NC"
        echo
        echo "$BOLD$heading$NORMAL" | fold -s
        if test -n "$body"; then
          echo
          echo "$body" | fold -s
          echo
        fi
        echo
        cat "$file" | nl -w 4 -s "| " -p -d '' -b a| tail -n +$(($start_row - 2)) | head -n $(($end_row - $start_row + 7))
        echo
        echo
      done
  done