#!/bin/env bash

show_help() {
  echo "Usage: $(basename $0) [--preset|-p] [--executable|-e] [--dry-run|-d]"
  echo "Options:"
  echo "  --help        | -h     (Optional) Display help information on how to use this script"
  echo "  --preset      | -p     (Optional) Disables interactive preset selection and runs it"
  echo "  --executable  | -e     (Optional) Changes the default executable filename of the selected preset"
  echo "  --dry-run     | -d     (Optional) The script will only show the command it would run"
}

SELECTED_PRESET=""
EXECUTABLE_FILENAME=""
SHOULD_DRY_RUN=false

while [ "$#" -gt 0 ]; do
  case "$1" in
  --help | -h)
    show_help
    exit
    ;;
  --preset | -p)
    SELECTED_PRESET="$2"
    shift 2
    ;;
  --executable | -e)
    EXECUTABLE_FILENAME="$2"
    shift 2
    ;;
  --dry-run | -d)
    SHOULD_DRY_RUN=true
    shift
    ;;
  *) shift ;;
  esac
done

MISE_TOOLS=()

MISE_TOOL_JAVA_8="adoptopenjdk-8.0.322+6"
MISE_TOOL_JAVA_11="adoptopenjdk-11.0.25+9"
MISE_TOOL_MAVEN_3_3_3="3.3.3"
MISE_TOOL_MAVEN_3_9_9="3.9.9"

FILENAME_GP_DEBUGPORTS="debugports-01.sh"
FILENAME_GEOSERVER="runstandalone.sh"

list_presets() {
  echo "Choose one of the presets:"
  echo "    1. Run GP with Java 8"
  echo "    2. Run GeoServer with Java 8"
  echo "    3. Run GeoServer with Java 11"
  echo "    4. Run Maven 3.3.3 with Java 8"
  echo "    4. Run Maven 3.8.4 with Java 11"
}

read_preset_input() {
  read -s -n 1 SELECTED_PRESET
}

set_executable_filename_if_it_is_null() {
  [[ -z "$EXECUTABLE_FILENAME" ]] && EXECUTABLE_FILENAME="$1"
}

select_preset_by_input() {
  case "$SELECTED_PRESET" in
  "1")
    set_executable_filename_if_it_is_null "$FILENAME_GP_DEBUGPORTS"
    MISE_TOOLS=("java@$MISE_TOOL_JAVA_8")
    ;;
  "2")
    set_executable_filename_if_it_is_null "$FILENAME_GP_DEBUGPORTS"
    MISE_TOOLS=("java@$MISE_TOOL_JAVA_11")
    ;;
  "3")
    set_executable_filename_if_it_is_null "$FILENAME_GEOSERVER"
    MISE_TOOLS=("java$MISE_TOOL_JAVA_8" "maven@$MISE_TOOL_MAVEN_3_3_3")
    ;;
  "4")
    set_executable_filename_if_it_is_null "$FILENAME_GEOSERVER"
    MISE_TOOLS=("java$MISE_TOOL_JAVA_11" "maven@$MISE_TOOL_MAVEN_3_9_9")
    ;;
  esac
}

if [ -z "$SELECTED_PRESET" ]; then
  list_presets
  read_preset_input
fi

while [ -z "$SELECTED_PRESET" ]; do
  list_presets
  read_preset_input
done

select_preset_by_input

EXECUTABLE_FILENAME="./$EXECUTABLE_FILENAME"

if [ ! -f "$EXECUTABLE_FILENAME" ]; then
  echo "The executable filename \"$EXECUTABLE_FILENAME\" does not exist in the current working directory."
  exit 1
fi

COMMAND_TO_RUN=("mise" "exec" "${MISE_TOOLS[@]}" "--" "$EXECUTABLE_FILENAME")

[[ "$SHOULD_DRY_RUN" == true ]] && COMMAND_TO_RUN=("echo" "${COMMAND_TO_RUN[@]}")

echo -e "\n"

eval "${COMMAND_TO_RUN[@]}"