#!/usr/bin/env bash
set -euo pipefail

chrome_debug_port="${MJ_ITER_CHROME_PORT:-9222}"
browser_mode="${MJ_ITER_BROWSER_MODE:-prompt}"
profile_dir="${MJ_ITER_CHROME_PROFILE_DIR:-${XDG_STATE_HOME:-$HOME/.local/state}/midjourney-iteration/chrome-profile}"

# Chrome 136+ silently ignores --remote-debugging-port when paired with the
# default user-data-dir (security hardening against cookie-theft). A non-default
# --user-data-dir is REQUIRED. The skill keeps a persistent profile under
# $profile_dir so the user only signs into midjourney.com once.
mkdir -p "$profile_dir"

case "$(uname -s)" in
  Darwin)
    chrome_app='Google Chrome'
    chrome_bin='/Applications/Google Chrome.app/Contents/MacOS/Google Chrome'
    # Use the binary directly rather than `open -a` so the flags are guaranteed
    # to take effect even if a Chrome instance is running on a different profile.
    launch_cmd=("$chrome_bin" "--remote-debugging-port=$chrome_debug_port" "--user-data-dir=$profile_dir")
    ;;
  Linux)
    if command -v google-chrome >/dev/null 2>&1; then
      chrome_bin="$(command -v google-chrome)"
    elif command -v chromium >/dev/null 2>&1; then
      chrome_bin="$(command -v chromium)"
    else
      printf 'Could not find google-chrome or chromium on PATH.\n' >&2
      exit 1
    fi
    launch_cmd=("$chrome_bin" "--remote-debugging-port=$chrome_debug_port" "--user-data-dir=$profile_dir")
    ;;
  *)
    printf 'Unsupported OS: %s. Launch Chrome manually with --remote-debugging-port=%s --user-data-dir=%s.\n' "$(uname -s)" "$chrome_debug_port" "$profile_dir" >&2
    exit 1
    ;;
esac

cat <<TEXT
midjourney-iteration: relaunch Chrome with DevTools Protocol enabled

This will launch Chrome with --remote-debugging-port=$chrome_debug_port and a
dedicated user-data-dir at:

  $profile_dir

Important:

  - The dedicated profile is REQUIRED. Chrome 136+ silently ignores
    --remote-debugging-port on the default profile. Override the location with
    \$MJ_ITER_CHROME_PROFILE_DIR if you want it elsewhere.

  - This is a separate Chrome profile from your everyday browsing. Tabs,
    extensions, and logins do NOT carry over. The first run will require you
    to sign into midjourney.com; subsequent runs reuse the same profile.

  - You can keep your normal Chrome window open at the same time — this just
    adds a second Chrome window pointed at the dedicated profile. No need to
    quit your everyday Chrome.

  - This script will NOT auto-quit any existing Chrome for you.

Launch command:

  ${launch_cmd[*]}

TEXT

case "$browser_mode" in
  always|open|yes|true|1)
    printf 'Launching now (MJ_ITER_BROWSER_MODE=%s)...\n' "$browser_mode"
    "${launch_cmd[@]}" >/dev/null 2>&1 &
    sleep 2
    printf 'Chrome relaunch dispatched. Run the preflight again to confirm.\n'
    exit 0
    ;;
  never|manual|no|false|0)
    printf 'Browser launch skipped by MJ_ITER_BROWSER_MODE=%s. Copy the command above.\n' "$browser_mode"
    exit 0
    ;;
esac

printf 'Run the launch command above now? [y/N]: '
read -r answer
case "$answer" in
  y|Y|yes|YES|Yes)
    "${launch_cmd[@]}" >/dev/null 2>&1 &
    sleep 2
    printf 'Chrome relaunch dispatched. Run the preflight again to confirm.\n'
    ;;
  *)
    printf 'Skipped. Copy the launch command above when you are ready.\n'
    ;;
esac