shell.nix

{ pkgs ? import <nixpkgs> {} }:
pkgs.mkShell {
  name = "indie";

  nativeBuildInputs = with pkgs; [
    elixir_1_18
    erlang
    rebar3
    nodejs
    yarn
    fish
    gnumake
    postgresql
  ];

  # Hook to automatically switch to Fish when entering the shell
  shellHook = ''
    export MIX_ENV=dev
    export NIX_ENFORCE_PURITY=0 # Without this bcrypt does not compile

    redecho() { echo -e "\e[31m$1\e[0m"; }
    greenecho() { echo -e "\e[32m$1\e[0m"; }

    # Define the path for the .iex.exs file
    IEX_FILE="$PWD/.iex.exs"

    # Create the .iex.exs file if it doesn't exist
    if [ ! -f "$IEX_FILE" ]; then
      redecho "Creating .iex.exs file with aliases and auto_reload"
      cat <<EOF > "$IEX_FILE"
IEx.configure(auto_reload: true)

alias Indie.Repo
alias Indie.Accounts.{User, Address}
alias Indie.Commerce.Order
alias Indie.Domains.Domain
EOF
    fi

    # Print a message indicating the .iex.exs file is ready
    [ -f "$IEX_FILE" ] && greenecho "iex.exs file is ready!"

    # Run mix deps.get and mix deps.compile if necessary
    [ ! -d "deps" ] && redecho "Running mix deps.get" && mix deps.get
    [ ! -d "_build" ] && redecho "Running mix deps.compile" && mix deps.compile

    # Do some fancy PostgresSQL commands
    #[ ! -d ".data" ] && redecho "Creating database" && initdb -D .data

# Define project folder and custom directories
export PROJECT_DIR=/tmp/indie
export PGDATA="$PROJECT_DIR/data"
export PGLOG="$PROJECT_DIR/logfile"
export PGPORT=5433
export PGLockDir="$PROJECT_DIR/.lock"
alias quit="killall -s KILL postgres && exit"

# Ensure the custom directories exist
rm -r $PGDATA
mkdir -p $PGDATA
mkdir -p $PGLockDir
chmod 700 $PGDATA
chmod 700 $PGLockDir

# Run PostgreSQL with custom socket directory
pg_ctl initdb -o "-U postgres"

pg_ctl -D $PGDATA -l $PGLOG -o "-p $PGPORT -h localhost -k $PGLockDir" start

trap 'killall -s KILL postgres' EXIT
# Create the database
sleep 2 && mix ecto.create && mix ecto.reset
    # Switch to fish shell if not already in fish
    #exec ${pkgs.fish}/bin/fish
  '';
}