import subprocess
import sys
import os
import json
from datetime import datetime

# --------------------------------------------------
# 🔧 Auto-install Flask if missing
# --------------------------------------------------
def install_if_missing(package):
    try:
        __import__(package)
    except ImportError:
        print(f"⚡ Installing missing package: {package}")
        subprocess.check_call([sys.executable, "-m", "pip", "install", package])

install_if_missing("flask")

# --------------------------------------------------
# 📦 Imports
# --------------------------------------------------
from flask import Flask, render_template, request, jsonify, send_from_directory

# --------------------------------------------------
# ⚙️ CONFIGURATION GLOBALE
# --------------------------------------------------
PORT = int(os.environ.get("PORT", 7860))

BASE_DIR = os.path.dirname(os.path.abspath(__file__))

CROSS_READING_DIR = os.path.join(BASE_DIR, "cross_reading")
TEMPLATES_DIR     = os.path.join(BASE_DIR, "templates")
STATIC_DIR        = os.path.join(BASE_DIR, "static")
DATA_DIR          = os.path.join(BASE_DIR, "data")

SCENARIOS_FILE = os.path.join(CROSS_READING_DIR, "scenarios.json")
STATS_FILE     = os.path.join(CROSS_READING_DIR, "trust_stats.json")
REVIEW_FILE    = os.path.join(CROSS_READING_DIR, "review.json")

CROSS_HTML = "cross_readers.html"
CROSS_JS   = "cross_readers.js"

app = Flask(
    __name__,
    template_folder=TEMPLATES_DIR,
    static_folder=STATIC_DIR
)

# --------------------------------------------------
# 🌐 ROUTES UI
# --------------------------------------------------
@app.route("/")
def index():
    return render_template("index.html")

@app.route("/cross_readers.html")
@app.route("/cross_reading/cross_readers.html")
def cross_readers():
    """Page Cross Reading"""
    if os.path.exists(os.path.join(CROSS_READING_DIR, CROSS_HTML)):
        return send_from_directory(CROSS_READING_DIR, CROSS_HTML)
    return "cross_readers.html introuvable", 404

@app.route("/cross_reading/cross_readers.js")
def cross_readers_js():
    return send_from_directory(CROSS_READING_DIR, CROSS_JS)

# --------------------------------------------------
# 💾 API – TRUST (quantitatif)
# --------------------------------------------------
@app.route("/save_trust", methods=["POST"])
def save_trust():
    data = request.json

    record = {
        "scenario_id": data.get("scenario_id"),
        "trust_metrics": data.get("trust_metrics", {}),
        "trust_score": data.get("trust_score"),
        "comment": data.get("comment"),
        "timestamp": datetime.now().isoformat()
    }

    with open(STATS_FILE, "r+", encoding="utf-8") as f:
        content = json.load(f)
        content["evaluations"].append(record)
        f.seek(0)
        json.dump(content, f, indent=2, ensure_ascii=False)

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

@app.route("/api/evaluations")
def get_evaluations():
    with open(STATS_FILE, "r", encoding="utf-8") as f:
        data = json.load(f)

    # Normalisation métriques
    for e in data.get("evaluations", []):
        if "trust_metrics" in e:
            m = {}
            for k, v in e["trust_metrics"].items():
                mapping = {
                    "RA": "AR",
                    "EA": "AE",
                    "RE": "ESR",
                    "MCS": "SDM",
                    "MS": "SM"
                }
                m[mapping.get(k, k)] = v
            e["trust_metrics"] = m

    return jsonify(data)

# --------------------------------------------------
# 📘 API – SCÉNARIOS
# --------------------------------------------------
@app.route("/api/scenarios")
def get_scenarios():
    with open(SCENARIOS_FILE, "r", encoding="utf-8") as f:
        return jsonify(json.load(f))

# --------------------------------------------------
# 📝 API – REVIEWS (qualitatif)
# --------------------------------------------------
@app.route("/api/reviews")
def get_reviews():
    with open(REVIEW_FILE, "r", encoding="utf-8") as f:
        return jsonify(json.load(f))

@app.route("/save_review", methods=["POST"])
def save_review():
    data = request.json

    review = {
        "scenario_id": data.get("scenario_id"),
        "reader": data.get("reader"),
        "review": data.get("review"),
        "timestamp": datetime.now().isoformat()
    }

    with open(REVIEW_FILE, "r+", encoding="utf-8") as f:
        content = json.load(f)
        content["reviews"].append(review)
        f.seek(0)
        json.dump(content, f, indent=2, ensure_ascii=False)

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

# --------------------------------------------------
# 📂 ROUTES FICHIERS STATIQUES
# --------------------------------------------------
@app.route("/cross_reading/<path:filename>")
def serve_cross_reading(filename):
    return send_from_directory(CROSS_READING_DIR, filename)

# --------------------------------------------------
# 🚀 MAIN
# --------------------------------------------------
if __name__ == "__main__":

    print(f"🚀 Application : http://0.0.0.0:{PORT}")
    print(f"📈 Cross Reading : http://0.0.0.0:{PORT}/cross_readers.html")

    # Création dossiers
    for folder in [CROSS_READING_DIR, TEMPLATES_DIR, STATIC_DIR, DATA_DIR]:
        os.makedirs(folder, exist_ok=True)

    # Initialisation fichiers
    defaults = {
        SCENARIOS_FILE: {"scenarios": []},
        STATS_FILE: {"evaluations": []},
        REVIEW_FILE: {"reviews": []}
    }

    for path, content in defaults.items():
        if not os.path.exists(path):
            with open(path, "w", encoding="utf-8") as f:
                json.dump(content, f, indent=2, ensure_ascii=False)
            print(f"📄 Créé : {path}")

    app.run(
        host="0.0.0.0",
        port=PORT,
        debug=True,
        use_reloader=False
    )