insert_data.sh

#! /bin/bash

if [[ $1 == "test" ]]
then
  PSQL="psql --username=postgres --dbname=worldcuptest -t --no-align -c"
else
  PSQL="psql --username=freecodecamp --dbname=worldcup -t --no-align -c"
fi

# Do not change code above this line. Use the PSQL variable above to query your database.

echo $($PSQL "TRUNCATE TABLE games, teams;")

cat games.csv | while IFS="," read YEAR ROUND WINNER OPPONENT WINNER_GOALS OPPONENT_GOALS
do 
  if [[ $YEAR != year ]]
  then
    WINNER_ID=$($PSQL "SELECT team_id FROM teams WHERE name = '$WINNER'")
    OPPONENT_ID=$($PSQL "SELECT team_id FROM teams WHERE name = '$OPPONENT'")
    if [[ -z $WINNER_ID ]]
    then
      INSERT_WINNER_RESULT=$($PSQL "INSERT INTO teams(name) VALUES('$WINNER')")
      if [[ $INSERT_WINNER_RESULT == "INSERT 0 1" ]]
      then
        echo Inserted into teams $WINNER
      fi
      WINNER_ID=$($PSQL "SELECT team_id FROM teams WHERE name = '$WINNER'")
    fi

    
    if [[ -z $OPPONENT_ID ]]
    then
      INSERT_OPPONENT_RESULT=$($PSQL "INSERT INTO teams(name) VALUES('$OPPONENT')")
      if [[ $INSERT_OPPONENT_RESULT == "INSERT 0 1" ]]
      then
        echo Inserted into teams $OPPONENT
      fi
      OPPONENT_ID=$($PSQL "SELECT team_id FROM teams WHERE name = '$OPPONENT'")
    fi
    # tengo winner_id y opponent_id

    INSERT_GAME_INTO_GAMES=$($PSQL "INSERT INTO games(year, round, winner_id, opponent_id, winner_goals, opponent_goals) VALUES($YEAR, '$ROUND', $WINNER_ID, $OPPONENT_ID, $WINNER_GOALS, $OPPONENT_GOALS)")
    if [[ $INSERT_GAME_INTO_GAMES == "INSERT 0 1" ]]
    then
      echo Inserted into games $YEAR $ROUND $WINNER_ID $OPPONENT_ID $WINNER_GOALS $OPPONENT_GOALS
    fi
  fi
done