# app.py — MetaGuardSOT Web Interface
from __future__ import annotations

import os
import sys
import shutil
import tempfile
from dataclasses import asdict
from typing import List

from flask import Flask, render_template, request, jsonify, send_file

from core import scan_target, ScanResult, sanitize_file
from reporters import export_json, export_csv, export_html

app = Flask(__name__)
app.config["MAX_CONTENT_LENGTH"] = 100 * 1024 * 1024  # 100 MB
app.config["UPLOAD_FOLDER"] = os.path.join(os.path.dirname(__file__), "uploads")

os.makedirs(app.config["UPLOAD_FOLDER"], exist_ok=True)

results_store: List[ScanResult] = []


@app.route("/")
def index():
    return render_template("index.html")


@app.route("/api/upload", methods=["POST"])
def upload_files():
    files = request.files.getlist("files")
    if not files or all(f.filename == "" for f in files):
        return jsonify({"error": "No files uploaded"}), 400

    saved = []
    upload_dir = app.config["UPLOAD_FOLDER"]
    for f in files:
        if f.filename:
            safe_name = f.filename.replace("/", "_").replace("\\", "_")
            dest = os.path.join(upload_dir, safe_name)
            f.save(dest)
            saved.append(safe_name)

    return jsonify({"files": saved, "count": len(saved)})


@app.route("/api/scan", methods=["POST"])
def scan():
    data = request.get_json()
    target = data.get("target", "")
    recursive = data.get("recursive", True)
    context = data.get("context", "OSINT")

    if not target:
        upload_dir = app.config["UPLOAD_FOLDER"]
        if os.path.isdir(upload_dir) and os.listdir(upload_dir):
            target = upload_dir
        else:
            return jsonify({"error": "No files to scan. Upload files first."}), 400

    try:
        results = scan_target(target, recursive, context)
        global results_store
        results_store = results

        out = []
        for r in results:
            out.append({
                "path": r.path,
                "file_type": r.file_type,
                "size_bytes": r.size_bytes,
                "sha256": r.sha256,
                "metadata": r.metadata,
                "context": r.context,
                "total_risk": r.total_risk,
                "level": r.level,
                "findings": [{"name": f.name, "severity": f.severity, "evidence": f.evidence} for f in r.findings],
            })
        return jsonify({"results": out, "count": len(out)})
    except Exception as e:
        return jsonify({"error": str(e)}), 500


@app.route("/api/results")
def get_results():
    out = []
    for r in results_store:
        out.append({
            "path": r.path,
            "file_type": r.file_type,
            "size_bytes": r.size_bytes,
            "sha256": r.sha256,
            "metadata": r.metadata,
            "context": r.context,
            "total_risk": r.total_risk,
            "level": r.level,
            "findings": [{"name": f.name, "severity": f.severity, "evidence": f.evidence} for f in r.findings],
        })
    return jsonify({"results": out, "count": len(out)})


@app.route("/api/result/<int:index>")
def get_result(index):
    if 0 <= index < len(results_store):
        r = results_store[index]
        return jsonify({
            "path": r.path,
            "file_type": r.file_type,
            "size_bytes": r.size_bytes,
            "sha256": r.sha256,
            "metadata": r.metadata,
            "context": r.context,
            "total_risk": r.total_risk,
            "level": r.level,
            "findings": [{"name": f.name, "severity": f.severity, "evidence": f.evidence} for f in r.findings],
        })
    return jsonify({"error": "Not found"}), 404


@app.route("/api/sanitize/<int:index>", methods=["POST"])
def sanitize(index):
    if 0 <= index < len(results_store):
        r = results_store[index]
        if r.file_type != "image":
            return jsonify({"error": "Sanitization supported only for image files"}), 400
        try:
            clean_path = sanitize_file(r.path, r.file_type)
            return jsonify({"sanitized_path": clean_path})
        except Exception as e:
            return jsonify({"error": str(e)}), 500
    return jsonify({"error": "Not found"}), 404


@app.route("/api/export/<fmt>")
def export(fmt):
    if not results_store:
        return jsonify({"error": "No results to export. Run scan first."}), 400

    tmp = tempfile.NamedTemporaryFile(delete=False, suffix=f".{fmt}")
    tmp.close()

    try:
        if fmt == "json":
            export_json(results_store, tmp.name)
        elif fmt == "csv":
            export_csv(results_store, tmp.name)
        elif fmt == "html":
            export_html(results_store, tmp.name)
        else:
            return jsonify({"error": f"Unknown format: {fmt}"}), 400

        return send_file(tmp.name, as_attachment=True, download_name=f"report.{fmt}")
    except Exception as e:
        return jsonify({"error": str(e)}), 500
    finally:
        try:
            os.unlink(tmp.name)
        except OSError:
            pass


@app.route("/api/clear", methods=["POST"])
def clear():
    global results_store
    results_store = []

    upload_dir = app.config["UPLOAD_FOLDER"]
    if os.path.isdir(upload_dir):
        shutil.rmtree(upload_dir)
        os.makedirs(upload_dir, exist_ok=True)

    return jsonify({"status": "cleared"})


if __name__ == "__main__":
    port = int(os.environ.get("PORT", 5000))
    debug = os.environ.get("DEBUG", "1") == "1"
    print(f"MetaGuardSOT starting on http://127.0.0.1:{port}")
    app.run(host="0.0.0.0", port=port, debug=debug)