dotenv

#!/bin/bash -e
#
# Generate `.env` file with randomized secrets.

#######################################
# Create dotenv file for development.
#
# Globals:
#   None
# Arguments:
#   None
# Outputs:
#   None
#######################################
create_env() {
    if [ ! -f .env ]
    then
        touch .env

        POSTGRES_DB=clairbuoyant
        POSTGRES_PASSWORD=$(random_password)
        POSTGRES_USER=$(username)
        PYTHON_ENV=development

        DATABASE_URL="postgresql+asyncpg://${POSTGRES_USER}:${POSTGRES_PASSWORD}@localhost:5432/${POSTGRES_DB}"

        echo "POSTGRES_DB=${POSTGRES_DB}" >> .env
        echo "POSTGRES_PASSWORD=${POSTGRES_PASSWORD}" >> .env
        echo "POSTGRES_USER=${POSTGRES_USER}" >> .env
        echo "DATABASE_URL=postgresql+asyncpg://${POSTGRES_USER}:${POSTGRES_PASSWORD}@localhost:5432/${POSTGRES_DB}" >> .env
        echo "PYTHON_ENV=${PYTHON_ENV}" >> .env
    fi
}

#######################################
# Load contents of dotenv file to shell.
#
# Globals:
#   None
# Arguments:
#   None
# Outputs:
#   None
#######################################
load_env() {
    if [ -f .env ]; then
        export $(echo $(cat .env | sed 's/#.*//g'| xargs) | envsubst)
    fi
}

#######################################
# Generate randomized password
# for development environment.
#
# Globals:
#   None
# Arguments:
#   None
# Outputs:
#   Writes random password to stdout
#######################################
random_password() {
    LC_ALL=C < /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c ${1:-20}; echo;
}

#######################################
# Get name of currently logged-in user.
#
# Globals:
#   None
# Arguments:
#   None
# Outputs:
#   Writes name of user to stdout
#######################################
username() {
    whoami
}

create_env