Solution

number_guess.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+PSQL="psql -X --username=freecodecamp --dbname=number_guess --no-align --tuples-only -c"
+RANDOM_NUMBER=$(($RANDOM % 1000 + 1))
+echo "Enter your username:"
+read USERNAME
+
+USER_QUERY=$($PSQL "SELECT username, total_games_played, best_score FROM users WHERE username='$USERNAME'")
+
+if [[ -z $USER_QUERY ]]
+then
+  echo -e "Welcome, $USERNAME! It looks like this is your first time here."
+  TOTAL=0
+  BEST=9999999
+  ADD_USER=$($PSQL "INSERT INTO users(username, total_games_played) VALUES('$USERNAME', $TOTAL)")
+else
+  IFS="|" read USERNAME TOTAL BEST <<< $USER_QUERY
+  echo -e "Welcome back, $USERNAME! You have played $TOTAL games, and your best game took $BEST guesses."
+fi
+
+echo "Guess the secret number between 1 and 1000:"
+NO_OF_GUESSES=0
+while [[ true ]]
+do
+  read GUESS
+  if [[ $GUESS =~ ^[0-9]+$ ]]
+  then
+    if [[ $GUESS > $RANDOM_NUMBER ]]
+    then
+      ((NO_OF_GUESSES++))
+      echo -e "It's lower than that, guess again:"
+    elif [[ $GUESS < $RANDOM_NUMBER ]]
+    then
+      ((NO_OF_GUESSES++))
+      echo -e "It's higher than that, guess again:"
+    else
+      ((NO_OF_GUESSES++))
+      echo -e "You guessed it in $NO_OF_GUESSES tries. The secret number was $RANDOM_NUMBER. Nice job!"
+      break
+    fi
+  else
+    echo -e "That is not an integer, guess again:"
+  fi
+done
+
+UPDATE_USER_STATS=$($PSQL "UPDATE users SET total_games_played=$(($TOTAL + 1)), best_score=$(($BEST < $NO_OF_GUESSES ? $BEST: $NO_OF_GUESSES)) WHERE username='$USERNAME'")

number_guess.sql

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+--
+-- PostgreSQL database dump
+--
+
+-- Dumped from database version 12.9 (Ubuntu 12.9-2.pgdg20.04+1)
+-- Dumped by pg_dump version 12.9 (Ubuntu 12.9-2.pgdg20.04+1)
+
+SET statement_timeout = 0;
+SET lock_timeout = 0;
+SET idle_in_transaction_session_timeout = 0;
+SET client_encoding = 'UTF8';
+SET standard_conforming_strings = on;
+SELECT pg_catalog.set_config('search_path', '', false);
+SET check_function_bodies = false;
+SET xmloption = content;
+SET client_min_messages = warning;
+SET row_security = off;
+
+DROP DATABASE number_guess;
+--
+-- Name: number_guess; Type: DATABASE; Schema: -; Owner: freecodecamp
+--
+
+CREATE DATABASE number_guess WITH TEMPLATE = template0 ENCODING = 'UTF8' LC_COLLATE = 'C.UTF-8' LC_CTYPE = 'C.UTF-8';
+
+
+ALTER DATABASE number_guess OWNER TO freecodecamp;
+
+\connect number_guess
+
+SET statement_timeout = 0;
+SET lock_timeout = 0;
+SET idle_in_transaction_session_timeout = 0;
+SET client_encoding = 'UTF8';
+SET standard_conforming_strings = on;
+SELECT pg_catalog.set_config('search_path', '', false);
+SET check_function_bodies = false;
+SET xmloption = content;
+SET client_min_messages = warning;
+SET row_security = off;
+
+SET default_tablespace = '';
+
+SET default_table_access_method = heap;
+
+--
+-- Name: users; Type: TABLE; Schema: public; Owner: freecodecamp
+--
+
+CREATE TABLE public.users (
+    username character varying(100) NOT NULL,
+    total_games_played integer,
+    best_score integer
+);
+
+
+ALTER TABLE public.users OWNER TO freecodecamp;
+
+--
+-- Data for Name: users; Type: TABLE DATA; Schema: public; Owner: freecodecamp
+--
+
+INSERT INTO public.users VALUES ('dfsd', 1, 0);
+INSERT INTO public.users VALUES ('user_1657093016203', 2, 235);
+INSERT INTO public.users VALUES ('user_1657093016204', 5, 243);
+INSERT INTO public.users VALUES ('xyz', 11, 513);
+INSERT INTO public.users VALUES ('user_1657093329259', 2, 186);
+INSERT INTO public.users VALUES ('user_1657093329260', 5, 279);
+INSERT INTO public.users VALUES ('user_1657093399112', 2, 468);
+INSERT INTO public.users VALUES ('user_1657093399113', 5, 236);
+INSERT INTO public.users VALUES ('user_1657093473136', 2, 807);
+INSERT INTO public.users VALUES ('user_1657093473137', 5, 176);
+
+
+--
+-- Name: users users_pkey; Type: CONSTRAINT; Schema: public; Owner: freecodecamp
+--
+
+ALTER TABLE ONLY public.users
+    ADD CONSTRAINT users_pkey PRIMARY KEY (username);
+
+
+--
+-- PostgreSQL database dump complete
+--
+