Add insert_data.sh

insert_data.sh

@@ -0,0 +1,46 @@
+#! /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 teams,games")
+
+cat games.csv | while IFS="," read year round winner opponent winner_goals opponent_goals; do
+
+  if [[ $year == "year" ]]; then
+    continue
+  fi
+
+  # Check if winner exists
+  WINNER_CHECK=$($PSQL "SELECT team_id FROM teams WHERE name = '$winner'")
+  if [[ -z $WINNER_CHECK ]]; then
+    INSERT_WINNER_RESULT=$($PSQL "INSERT INTO teams(name) VALUES('$winner')")
+    if [[ $INSERT_WINNER_RESULT == "INSERT 0 1" ]]; then
+      echo "Inserted $winner into teams"
+    fi
+  fi
+  
+  # Check if opponent exists
+  OPPONENT_CHECK=$($PSQL "SELECT team_id FROM teams WHERE name = '$opponent'")
+  if [[ -z $OPPONENT_CHECK ]]; then
+    INSERT_OPPONENT_RESULT=$($PSQL "INSERT INTO teams(name) VALUES('$opponent')")
+    if [[ $INSERT_OPPONENT_RESULT == "INSERT 0 1" ]]; then
+      echo "Inserted $opponent into teams"
+    fi
+  fi
+
+  WINNER_ID=$($PSQL "SELECT team_id FROM teams WHERE name = '$winner'")
+  OPPONENT_ID=$($PSQL "SELECT team_id FROM teams WHERE name = '$opponent'")
+
+  INSERT_GAME_RESULT=$($PSQL "INSERT INTO games(winner_id, opponent_id, winner_goals, opponent_goals, year, round) VALUES ($WINNER_ID, $OPPONENT_ID, $winner_goals, $opponent_goals, $year, '$round')")
+  if [[ $INSERT_GAME_RESULT == "INSERT 0 1" ]]; then
+    echo "Inserted $year $round: $winner $winner_goals - $opponent_goals $opponent into games"
+  else
+    echo $INSERT_GAME_RESULT
+  fi