"""
Point d'entrée principal de l'application Ospow.
Chaque route = une page du site.
Pour ajouter une page : créer templates/ma_page.html et ajouter une route ici.
"""

from flask import Flask, render_template, request, flash, redirect, url_for, Response
from flask_mail import Mail, Message
from datetime import date
import os
from dotenv import load_dotenv

load_dotenv()

app = Flask(__name__)
app.secret_key = os.environ.get("SECRET_KEY", "changez-moi-en-production")

# --- Configuration de l'envoi d'emails ---
app.config["MAIL_SERVER"]   = os.environ.get("MAIL_SERVER", "smtp.gmail.com")
app.config["MAIL_PORT"]     = int(os.environ.get("MAIL_PORT", 587))
app.config["MAIL_USE_TLS"]  = True
app.config["MAIL_USERNAME"] = os.environ.get("MAIL_USERNAME", "")
app.config["MAIL_PASSWORD"] = os.environ.get("MAIL_PASSWORD", "")
app.config["MAIL_DEFAULT_SENDER"] = os.environ.get("MAIL_USERNAME", "")

mail = Mail(app)
CONTACT_EMAIL = os.environ.get("CONTACT_EMAIL", "contact@ospow.fr")


# ─── Context global (disponible dans tous les templates) ──────────────────────

@app.context_processor
def inject_globals():
    return {"current_year": date.today().year}


# ─── Pages ────────────────────────────────────────────────────────────────────

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

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

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

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

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

@app.route("/contact", methods=["GET", "POST"])
def contact():
    if request.method == "POST":
        nom     = request.form.get("nom", "").strip()
        email   = request.form.get("email", "").strip()
        sujet   = request.form.get("sujet", "").strip()
        message = request.form.get("message", "").strip()

        # Validation basique
        errors = []
        if not nom:
            errors.append("Le nom est obligatoire.")
        if not email or "@" not in email:
            errors.append("Adresse email invalide.")
        if not message:
            errors.append("Le message ne peut pas être vide.")

        if errors:
            for e in errors:
                flash(e, "error")
            return render_template("contact.html", form_data=request.form)

        # Envoi de l'email
        try:
            msg = Message(
                subject=f"[Ospow Contact] {sujet or 'Nouveau message'}",
                recipients=[CONTACT_EMAIL],
                body=f"De : {nom} <{email}>\n\n{message}",
                reply_to=email,
            )
            mail.send(msg)
            flash("Votre message a bien été envoyé. Nous vous répondrons rapidement !", "success")
            return redirect(url_for("contact"))
        except Exception as exc:
            app.logger.error("Erreur envoi mail : %s", exc)
            flash("Une erreur est survenue lors de l'envoi. Réessayez plus tard.", "error")

    return render_template("contact.html", form_data={})


# ─── SEO : sitemap & robots ───────────────────────────────────────────────────

@app.route("/sitemap.xml")
def sitemap():
    pages = [
        (url_for("index",       _external=True), "weekly",  "1.0"),
        (url_for("surveillance",_external=True), "monthly", "0.9"),
        (url_for("cloud",       _external=True), "monthly", "0.9"),
        (url_for("opensource",  _external=True), "monthly", "0.9"),
        (url_for("equipe",      _external=True), "monthly", "0.7"),
        (url_for("contact",     _external=True), "monthly", "0.6"),
    ]
    today = date.today().isoformat()
    lines = ['<?xml version="1.0" encoding="UTF-8"?>',
             '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">']
    for loc, freq, priority in pages:
        lines.append(
            f"  <url><loc>{loc}</loc>"
            f"<lastmod>{today}</lastmod>"
            f"<changefreq>{freq}</changefreq>"
            f"<priority>{priority}</priority></url>"
        )
    lines.append("</urlset>")
    return Response("\n".join(lines), mimetype="application/xml")


@app.route("/robots.txt")
def robots():
    txt = (
        "User-agent: *\n"
        "Allow: /\n"
        f"Sitemap: {url_for('sitemap', _external=True)}\n"
    )
    return Response(txt, mimetype="text/plain")


# ─── Lancement ────────────────────────────────────────────────────────────────

if __name__ == "__main__":
    app.run(host="0.0.0.0", debug=True)