#!/usr/bin/bash

for up_file in *.up.sql; do
    down_file="${up_file%.up.sql}.down.sql"
    quoted_text=$(sed -n '3s/[^"]*\("[^"]*"\).*/\1/p' "$up_file")
    first_line=$(head -n 1 "$up_file")

    if [[ "$first_line" != *".up.sql" ]]; then
        sed -i "1s/$/\.up\.sql/" "$up_file"
    fi

    head -n 3 "$up_file" > "$down_file"
    echo "DROP TABLE IF EXISTS ${quoted_text};" >> "$down_file"
    tail -n 1 "$up_file" >> "$down_file"
done

sed -i 's/\bCREATE\b/DROP/g' *.down.sql

for file in *.sql; do
    [ -f "$file" ] || continue
    line3=$(sed -n '3p' "$file")
    len=${#line3}
    
    if [ "$len" -lt 64 ]; then
        needed=$((64 - len))
        dashes=$(printf '%*s' "$needed" | tr ' ' '-')
        sed -i "3s/$/$dashes/" "$file"
    fi
done



for file in *.down.sql; do
    [ -f "$file" ] || continue
    first_line=$(head -n 1 "$file")
    
    if [[ "$first_line" == *".up.sql" ]]; then
        sed -i '1s/\.up\.sql$/\.down\.sql/' "$file"
    fi
done