world-cup-database/insert_data.sh at main · abranico/world-cup-database · GitHub

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#! /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 [[ $WINNER != winner ]]
  then
    TEAM_ID=$($PSQL "SELECT team_id FROM teams WHERE name='$WINNER'")
    if [[ -z $TEAM_ID ]]
    then
        INSERT_TEAM_RESULT=$($PSQL "INSERT INTO teams(name) VALUES('$WINNER')")
        if [[ $INSERT_TEAM_RESULT == "INSERT 0 1" ]]
        then
            echo "Inserted into teams, $WINNER"
        fi
    fi
  fi

  if [[ $OPPONENT != opponent ]]
  then
    TEAM_ID=$($PSQL "SELECT team_id FROM teams WHERE name='$OPPONENT'")
    if [[ -z $TEAM_ID ]]
    then
        INSERT_TEAM_RESULT=$($PSQL "INSERT INTO teams(name) VALUES('$OPPONENT')")
        if [[ $INSERT_TEAM_RESULT == "INSERT 0 1" ]]
        then
            echo "Inserted into teams, $OPPONENT"
        fi
    fi
  fi

  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='$OPPONENT' ")
    GAME_ID=$($PSQL "SELECT game_id FROM games WHERE winner_id=$WINNER_ID AND opponent_id=$OPPONENT_ID")
    if [[ -z $GAME_ID ]]
    then
      INSERT_GAME_RESULT=$($PSQL "INSERT INTO games(year, round, winner_id, opponent_id, winner_goals, opponent_goals) VALUES($YEAR, '$ROUND', $WINNER_ID, $OPPONENT_ID, $WINNER_GOALS, $OPPONENT_GOALS)" )
      if [[ $INSERT_GAME_RESULT == "INSERT 0 1" ]]
      then
        echo "Inserted into games, $YEAR - $WINNER vs $OPPONENT"
      fi
    fi
  fi

done