# app/blueprints/ui.py

import os
import json
import asyncio
from pathlib import Path
from datetime import datetime
from flask import Blueprint, render_template, request, redirect, url_for, flash, current_app, send_file, abort

from app.utils.browser import get_browser
from app.utils.enrichment import enrich_url
from app.utils.settings import get_settings
from app.utils.io_helpers import get_recent_results

bp = Blueprint("main", __name__)

settings = get_settings()
app_name = settings.app.name
app_version = f"v {settings.app.version_major}.{settings.app.version_minor}"

# --- context processor ---
@bp.context_processor
def inject_app_info():
    """Inject app name and version into all templates."""
    return {
        "app_name": app_name,
        "app_version": app_version
    }

@bp.route("/", methods=["GET"])
def index():
    """
    Render the landing page with optional 'recent_results' list.

    The number of recent runs is controlled via settings.cache.recent_runs_count (int).
    Falls back to 10 if not present or invalid.
    """
    # Pull recent count from settings with a safe fallback
    try:
        # settings is already initialized at module import in your file
        recent_count = int(getattr(settings.cache, "recent_runs_count", 10))
        if recent_count < 0:
            recent_count = 0
    except Exception:
        recent_count = 10

    # Resolve SANDBOX_STORAGE from app config
    storage = Path(current_app.config["SANDBOX_STORAGE"]).resolve()

    # Build the recent list (non-fatal if storage is empty or unreadable)
    recent_results = get_recent_results(storage, recent_count, current_app.logger)

    # Pass to template; your index.html will hide the card if list is empty
    return render_template("index.html", recent_results=recent_results)

@bp.route("/analyze", methods=["POST"])
def analyze():
    url = request.form.get("url", "").strip()
    current_app.logger.info(f"[*] Analyzing {url}")
    if not url:
        flash("Please enter a URL.", "error")
        return redirect(url_for("main.index"))
    
    storage = Path(current_app.config["SANDBOX_STORAGE"]).resolve()
    storage.mkdir(parents=True, exist_ok=True)

    try:
        browser = get_browser()
        result = asyncio.run(browser.fetch_page_artifacts(url))
        current_app.logger.info(f"[+] Analysis done for {url}")
    except Exception as e:
        flash(f"Analysis failed: {e}", "error")
        current_app.logger.error(f"Analysis failed for {url}: {e}")
        return redirect(url_for("main.index"))

    # Add enrichment safely
    try:
        enrichment = enrich_url(url)
        result["enrichment"] = enrichment
        current_app.logger.info(f"[+] Enrichment added for {url}")
    except Exception as e:
        result["enrichment"] = {}
        current_app.logger.warning(f"[!] Enrichment failed for {url}: {e}")

    # Redirect to permalink page for this run
    return redirect(url_for("main.view_result", run_uuid=result["uuid"]))

@bp.route("/results/<run_uuid>", methods=["GET"])
def view_result(run_uuid: str):
    # Resolve SANDBOX_STORAGE from app config
    storage = Path(current_app.config["SANDBOX_STORAGE"]).resolve()
    run_dir = storage / run_uuid
    results_path = run_dir / "results.json"

    if not results_path.exists():
        current_app.logger.error(f"Results not found for UUID: {run_uuid}")
        abort(404)

    with open(results_path, "r", encoding="utf-8") as f:
        result = json.load(f)

    # Pass the UUID to the template for artifact links
    result["uuid"] = run_uuid

    return render_template("result.html", **result)

@bp.route("/artifacts/<run_uuid>/<filename>", methods=["GET"])
def artifacts(run_uuid: str, filename: str):
    # Resolve SANDBOX_STORAGE from app config
    storage = Path(current_app.config["SANDBOX_STORAGE"]).resolve()
    run_dir = storage / run_uuid
    full_path = run_dir / filename

    # Prevent directory traversal
    try:
        full_path.relative_to(run_dir.resolve())
    except ValueError:
        current_app.logger.warning(f"Directory traversal attempt: {filename}")
        abort(404)

    if not full_path.exists():
        current_app.logger.error(f"Artifact not found: {filename} for UUID {run_uuid}")
        abort(404)

    return send_file(full_path)


@bp.get("/view/artifact/<run_uuid>/<filename>")
def view_artifact(run_uuid, filename):
    # Build a safe raw URL that streams the file (you said you already have this route)
    raw_url = url_for('api.get_artifact_raw', run_uuid=run_uuid, filename=filename)
    # Optional: derive language server-side if you prefer
    language = None  # e.g., 'javascript'
    return render_template('viewer.html', filename=filename, raw_url=raw_url, language=language)