#!/usr/bin/env bash

source scripts/languages.bash

# Set up .env file if it doesn't exist

function setup_env_file() {

echo ".env file not found. Let's create one!"

# Prompt user for NICKNAME

read -r -p "Enter your nickname (default: Unknown): " nickname

nickname=${nickname:-Unknown}

# Prompt user for LANGUAGE

echo "Select your preferred language:"

languages=("cpp" "java" "python" "python3" "c" "csharp" "javascript" "typescript" "php" "swift" "kotlin" "dart" "go" "ruby" "scala" "rust" "racket" "erlang" "elixir")

for i in "${!languages[@]}"; do

echo "$((i + 1))) ${languages[$i]}"

done

while true; do

read -r -p "Enter the number (default: 4): " language_index

language_index=${language_index:-4}

if [[ $language_index -ge 1 && $language_index -le ${#languages[@]} ]]; then

language=${languages[$((language_index - 1))]}

break

else

echo "Invalid input. Please enter a number between 1 and ${#languages[@]}."

fi

done

# Create .env file with user input or default values

echo "NICKNAME=$nickname" >.env

echo "LANGUAGE=$language" >>.env

echo ".env file created with the following values:"

echo "NICKNAME: $nickname"

echo "LANGUAGE: $language"

}

# Load environment variables from .env file

function load_env_vars() {

if [ ! -f .env ]; then

setup_env_file

fi

# shellcheck disable=SC2046

export $(sed <.env 's/#.*//g' | xargs | envsubst)

# Check if NICKNAME and LANGUAGE variables are set

if [ -z "$NICKNAME" ] || [ -z "$LANGUAGE" ]; then

echo "Error: Required environment variables NICKNAME and/or LANGUAGE are not set."

echo "Please set NICKNAME and LANGUAGE in the .env file with appropriate values."

exit 1

fi

# Check if the specified language is valid

if [[ ! "${!language_extensions[@]}" =~ $LANGUAGE ]]; then

echo "Error: Invalid language specified in the .env file."

echo "Please set LANGUAGE to one of the following valid languages:"

echo "${!language_extensions[@]}"

exit 1

fi

}

# Check if Bash version meets the minimum requirement

function check_bash_version() {

local required_version=$1

local bash_version

bash_version=$(bash --version | head -n1 | awk '{print $4}' | sed 's/\([0-9]*\.[0-9]*\.[0-9]*\).*/\1/')

if [[ $bash_version =~ ^([0-9]+)\.([0-9]+)\.([0-9]+) ]]; then

local major=${BASH_REMATCH[1]}

local minor=${BASH_REMATCH[2]}

local patch=${BASH_REMATCH[3]}

IFS='.' read -r -a required_parts <<<"$required_version"

local required_major=${required_parts[0]}

local required_minor=${required_parts[1]}

local required_patch=${required_parts[2]}

if ((major > required_major || (\

major == required_major && minor > required_minor) || (\

major == required_major && minor == required_minor && patch >= required_patch))); then

return 0

else

return 1

fi

else

return 1

fi

}

# Check if a command is installed

function check_command() {

local command="$1"

if ! command -v "$command" &>/dev/null; then

echo "The $command command is not installed."

read -r -p "Do you want to install $command? (Y/n): " install_command

case "$install_command" in

[nN] | [nN][oO])

echo "Installation of $command has been rejected. Exiting the script."

exit 1

;;

*)

echo "Proceeding with the installation of $command..."

brew install "$command"

;;

esac

fi

}

# Generates the solution code template with question details and author information

function make_solution_code() {

local question_id=$1

local question_name=$2

local question_url=$3

local code=$4

local comment=${language_comments[$LANGUAGE]}

local nickname

if [ -n "$NICKNAME" ]; then

nickname=$NICKNAME

else

nickname=Unknown

fi

local content

content=$(

cat <<EOF

${comment}

${comment}$question_id. $question_name

${comment}$question_url

${comment}Dale-Study

${comment}

${comment}Created by $nickname on $(date "+%Y/%m/%d").

${comment}

$code

EOF

)

echo "$content"

}

# Saves the solution code to a file in the appropriate directory based on the question slug and author's nickname

function save_file() {

local DIR

local title_slug="$1"

local content="$2"

local nickname

local language_extension

local solution_folder

local solution_file

if [ -n "$NICKNAME" ]; then

nickname=$NICKNAME

else

nickname=Unknown

fi

DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"

language_extension=${language_extensions[$LANGUAGE]}

solution_folder="$DIR/../$title_slug"

mkdir -p "$solution_folder"

solution_file="$solution_folder/$nickname.$language_extension"

echo "$content" >"$solution_file"

echo "File creation completed"

}