#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'

log() { echo "[$(date +'%F %T')] $*"; }
die() { log "ERROR: $*"; exit 1; }
need_cmd() { command -v "$1" >/dev/null 2>&1; }

missing=()
if ! need_cmd 7z; then
  missing+=("7z")
fi
if ! need_cmd python3; then
  missing+=("python3")
fi
if ! need_cmd curl && ! need_cmd wget; then
  missing+=("curl/wget")
fi
if ! need_cmd jq; then
  missing+=("jq")
fi
if ! need_cmd java; then
  missing+=("java")
fi

if [ "${#missing[@]}" -eq 0 ]; then
  log "All dependencies already satisfied."
  exit 0
fi

if ! need_cmd brew; then
  die "Homebrew is required to install dependencies. Install from https://brew.sh/ and re-run."
fi

log "Installing missing dependencies with Homebrew: ${missing[*]}"

brew install p7zip python jq wget openjdk@11

if ! need_cmd 7z || ! need_cmd python3 || ( ! need_cmd curl && ! need_cmd wget ) || ! need_cmd jq; then
  die "Dependencies are still missing after install attempt. Please install manually."
fi

if ! need_cmd java; then
  brew_prefix="$(brew --prefix)"
  jdk_bin="${brew_prefix}/opt/openjdk@11/bin"
  export_line="export PATH=\"${jdk_bin}:\$PATH\""
  profile=""
  shell_name="$(basename "${SHELL:-}")"
  if [ "$shell_name" = "zsh" ]; then
    profile="${HOME}/.zprofile"
  elif [ "$shell_name" = "bash" ]; then
    profile="${HOME}/.bash_profile"
  else
    profile="${HOME}/.profile"
  fi

  if [ ! -f "$profile" ] || ! grep -Fq "$export_line" "$profile"; then
    log "Adding OpenJDK 11 to PATH in ${profile}"
    printf '\n%s\n' "$export_line" >> "$profile"
  fi

  # shellcheck source=/dev/null
  if [ -f "$profile" ]; then
    . "$profile"
  fi

  if ! need_cmd java; then
    die "Java is still missing after install. Try opening a new terminal or add ${jdk_bin} to your PATH."
  fi
fi

log "Dependencies installed successfully."