# ============================================
# File: bookscraper/app.py  (ASYNC SCRAPING)
# ============================================

from dotenv import load_dotenv

load_dotenv()

print(">>> [WEB] Importing celery_app …")
from celery_app import celery_app

from flask import Flask, render_template, request, jsonify
from scraper.logger import log_debug

# Abort + Progress (per book_id)
from scraper.abort import set_abort
from scraper.progress import get_progress

# UI LOGS (GLOBAL — no book_id)
from scraper.ui_log import get_ui_logs, reset_ui_logs  # <-- ADDED

from celery.result import AsyncResult

# ⬇⬇⬇ TOEGEVOEGD voor cover-serving
from flask import send_from_directory
import os

app = Flask(__name__)


# =====================================================
# STATIC FILE SERVING FOR OUTPUT  ← TOEGEVOEGD
# =====================================================
OUTPUT_ROOT = os.getenv("BOOKSCRAPER_OUTPUT_DIR", "output")


@app.route("/output/<path:filename>")
def serve_output(filename):
    """Serve output files such as cover.jpg and volumes."""
    return send_from_directory(OUTPUT_ROOT, filename, as_attachment=False)


# =====================================================
# HOME PAGE
# =====================================================
@app.route("/", methods=["GET"])
def index():
    return render_template("index.html")


# =====================================================
# START SCRAPING (async via Celery)
# =====================================================
@app.route("/start", methods=["POST"])
def start_scraping():
    url = request.form.get("url", "").strip()

    if not url:
        return render_template("result.html", error="Geen URL opgegeven.")

    # ---------------------------------------------------------
    # NEW: Clear UI log buffer when starting a new scrape
    # ---------------------------------------------------------
    reset_ui_logs()

    log_debug(f"[WEB] Scraping via Celery: {url}")

    async_result = celery_app.send_task(
        "scraper.tasks.scraping.start_scrape_book",
        args=[url],
        queue="scraping",
    )

    return render_template(
        "result.html",
        message="Scraping gestart.",
        scraping_task_id=async_result.id,
        book_title=None,
    )


# =====================================================
# CLEAR UI LOGS MANUALLY (NEW)
# =====================================================
@app.route("/clear-logs", methods=["POST"])
def clear_logs():
    reset_ui_logs()
    return jsonify({"status": "ok", "message": "UI logs cleared"})


# =====================================================
# ABORT (per book_id)
# =====================================================
@app.route("/abort/<book_id>", methods=["POST"])
def abort_download(book_id):
    log_debug(f"[WEB] Abort requested for book: {book_id}")
    set_abort(book_id)
    return jsonify({"status": "ok", "aborted": book_id})


# =====================================================
# PROGRESS (per book_id)
# =====================================================
@app.route("/progress/<book_id>", methods=["GET"])
def progress(book_id):
    return jsonify(get_progress(book_id))


# =====================================================
# LOGS — GLOBAL UI LOGS
# =====================================================
@app.route("/logs", methods=["GET"])
def logs():
    return jsonify({"logs": get_ui_logs()})


# =====================================================
# CELERY RESULT → return book_id when scraping finishes
# =====================================================
@app.route("/celery-result/<task_id>", methods=["GET"])
def celery_result(task_id):
    result = AsyncResult(task_id, app=celery_app)

    if result.successful():
        return jsonify({"ready": True, "result": result.get()})

    if result.failed():
        return jsonify({"ready": True, "error": "failed"})

    return jsonify({"ready": False})


# =====================================================
# RUN FLASK
# =====================================================
if __name__ == "__main__":
    debug = os.getenv("FLASK_DEBUG", "0") == "1"
    host = os.getenv("HOST", "0.0.0.0")
    port = int(os.getenv("PORT", "5000"))

    log_debug(f"[WEB] Starting Flask server on {host}:{port}, debug={debug}")
    app.run(host=host, port=port, debug=debug)