hns-email/server.py

from functools import cache
import json
from flask import (
    Flask,
    make_response,
    redirect,
    request,
    jsonify,
    render_template,
    send_from_directory,
    send_file,
)
import os
import json
import requests
from datetime import datetime
import dotenv
from functools import cache
from markdownify import markdownify as md

dotenv.load_dotenv()

app = Flask(__name__)

notification_file = "/data/notifications.json"
if not os.path.exists("/data"):
    notification_file = "./notifications.json"


def find(name, path):
    for root, dirs, files in os.walk(path):
        if name in files:
            return os.path.join(root, name)

# Assets routes


@app.route("/assets/<path:path>")
def send_assets(path):
    if path.endswith(".json"):
        return send_from_directory(
            "templates/assets", path, mimetype="application/json"
        )

    if os.path.isfile("templates/assets/" + path):
        return send_from_directory("templates/assets", path)

    # Try looking in one of the directories
    filename: str = path.split("/")[-1]
    if (
        filename.endswith(".png")
        or filename.endswith(".jpg")
        or filename.endswith(".jpeg")
        or filename.endswith(".svg")
    ):
        if os.path.isfile("templates/assets/img/" + filename):
            return send_from_directory("templates/assets/img", filename)
        if os.path.isfile("templates/assets/img/favicon/" + filename):
            return send_from_directory("templates/assets/img/favicon", filename)

    return render_template("404.html"), 404


# region Special routes
@app.route("/favicon.png")
def faviconPNG():
    return send_from_directory("templates/assets/img", "favicon.png")


@app.route("/.well-known/<path:path>")
def wellknown(path):
    # Try to proxy to https://nathan.woodburn.au/.well-known/
    req = requests.get(f"https://nathan.woodburn.au/.well-known/{path}")
    return make_response(
        req.content, 200, {"Content-Type": req.headers["Content-Type"]}
    )


# endregion


# region Main routes
@app.route("/")
def index():
    # Check if user is logged in
    token = request.cookies.get("token")
    if token:
        return redirect("/inbox")

    return render_template("login.html", login=f"https://login.hns.au/auth?return={request.url}login")


@app.route("/login")
def login():
    # Get username and token from args
    token = request.args.get("token")
    # Set token cookie
    response = make_response(redirect("/refresh"))
    response.set_cookie("token", token)
    return response


@app.route("/logout")
def logout():
    # Delete token cookie
    response = make_response(redirect("/"))
    response.set_cookie("token", "")
    return response


@app.route("/inbox")
def inbox():
    # Check if user is logged in
    token = request.cookies.get("token")
    if not token:
        return redirect("/")

    # Get user info

    user = get_user(token)
    if not user:
        return redirect("/logout")

    email = user["hemail"]
    return render_template("inbox.html", emails=get_email(email))


@app.route("/delete/<path:path>")
def delete(path):
    # Check if user is logged in
    token = request.cookies.get("token")
    if not token:
        return redirect("/")

    # Get user info
    user = get_user(token)
    if not user:
        return redirect("/logout")

    email = user["hemail"]
    delete_email(path, email)
    return redirect("/inbox")


@app.route("/notifications")
def notifications():
    # Check if user is logged in
    token = request.cookies.get("token")
    if not token:
        return redirect("/")

    # Get user info
    user = get_user(token)
    if not user:
        return redirect("/logout")

    email = user["hemail"]
    notification = get_notification_settings(email)
    if not notification:
        return render_template("notifications.html", email=email)
    return render_template("notifications.html", email=email, webhook=notification["webhook"], email_alert=notification["email"])


@app.route("/notifications", methods=["POST"])
def notification_set():
    # Check if user is logged in
    token = request.cookies.get("token")
    if not token:
        return redirect("/")

    # Get user info
    user = get_user(token)
    if not user:
        return redirect("/logout")

    email = user["hemail"]
    webhook = request.form.get("webhook")
    email_alert = request.form.get("email")

    save_notification_settings(email, webhook, email_alert)

    return redirect("/notifications")


def save_notification_settings(email, webhook, email_alert):
    if not os.path.exists(notification_file):
        with open(notification_file, "w") as f:
            json.dump({
                email: {
                    "webhook": webhook,
                    "email": email_alert
                }
            }, f, indent=4)

    with open(notification_file, "r") as f:
        data = json.load(f)
        data[email] = {
            "webhook": webhook,
            "email": email_alert
        }
        with open(notification_file, "w") as f:
            json.dump(data, f, indent=4)


def get_notification_settings(email):
    if not os.path.exists(notification_file):
        return False

    with open(notification_file, "r") as f:
        data = json.load(f)
        if email not in data:
            return {"webhook": "", "email": ""}
        return data[email]


def delete_email(conversation_id, email):
    # Get email by id
    conversation = get_conversation(conversation_id)
    if not conversation:
        print("No conversation found")
        return
    print(conversation)

    if len(conversation) < 1:
        print("No conversation found")
        return

    headers = {
        "X-FreeScout-API-Key": os.getenv("FREESCOUT_API_KEY"),
    }
    altemail:str = f"{email.split('@')[0]}@e.hns.au"

    for thread in conversation:
        for message in thread["messages"]:
            if email in message["to"] or altemail in message["to"]:
                requests.delete(
                    f"https://ticket.woodburn.au/api/conversations/{thread['id']}", headers=headers)
                clear_cache()
                return


@app.route("/api/email", methods=["POST"])
def newemail():
    # Get the json
    json = request.get_json()

    # Get header x-freescout-event
    event = request.headers.get("x-freescout-event")

    if event == "convo.created":
        send_notification(json)
    elif event == "convo.customer.reply.created":
        send_notification(json)

    return jsonify(json)

# Removed for now
# @app.route("/api/email/<path:path>")
# def getemail(path):
#     email = f'{path}@login.hns.au'
#     return jsonify(get_email(email))


def send_notification(data):
    emails = data["cc"]
    for email in emails:
        notifications = get_notification_settings(email)
        if not notifications:
            continue
        if notifications["email"] != "":
            send_email(notifications["email"], data)
        if notifications["webhook"] != "":
            send_webhook(notifications["webhook"], data)


def send_email(email, data):
    print(f"Sending email to {email}")
    headers = {
        "X-FreeScout-API-Key": os.getenv("FREESCOUT_API_KEY"),
    }
    sender = f"{data['createdBy']['firstName']} "
    sender += f"{data['createdBy']['lastName']} ({data['createdBy']['email']})"
    message = data["_embedded"]["threads"][0]["body"]

    body = {
        "type": "email",
        "mailboxId": os.getenv("FREESCOUT_MAILBOX"),
        "subject": f"New email from {sender}",
        "customer": {
            "email": email
        },
        "threads": [
            {
                "text": f"You have a new email from {sender}\n\n{message}",
                "type": "message",
                "user": 1
            }
        ],
        "imported": False,
        "status": "closed",
    }
    req = requests.post(
        "https://ticket.woodburn.au/api/conversations", json=body, headers=headers)
    if req.status_code != 201:
        print(f"Failed to send email")
        print(req.text)


def send_webhook(webhook, data):
    print(f"Sending webhook to {webhook}")
    sender = f"{data['createdBy']['firstName']} "
    sender += f"{data['createdBy']['lastName']} ({data['createdBy']['email']})"
    message = data["_embedded"]["threads"][0]["body"]

    message = md(message)

    trimmed = len(message) > 3999
    # Only keep 4000 chars
    message = message[:4000]

    subject = data["subject"]
    body = {
        "content": "You have a new email",
        "embeds": [
            {
                "title": subject,
                "description": message,
                "url": "https://email.hns.au",
                "color": 5814783,
                "author": {
                    "name": sender
                }
            }
        ],
        "username": "HNS Email",
        "avatar_url": "https://hns.au/favicon.png",
        "attachments": []
    }
    if trimmed:
        body["embeds"][0]["footer"] = {
            "text": "Email has been trimmed"
        }

    req = requests.post(
        webhook, json=body)

@app.route("/refresh")
def refresh():
    # Check if user is logged in
    token = request.cookies.get("token")
    if not token:
        return redirect("/")

    # Get user info
    user = get_user(token)
    if not user:
        return redirect("/logout")
    
    clear_cache()
    return redirect("/inbox")


def clear_cache():
    get_email.cache_clear()

@cache
def get_user(token):
    req = requests.get(f"https://login.hns.au/auth/user?token={token}")
    if req.status_code != 200:
        return False
    return req.json()


@cache
def get_email(email:str):
    altemail:str = f"{email.split('@')[0]}@e.hns.au"
    params = {
        "embed": "threads",
        "mailboxId": os.getenv("FREESCOUT_MAILBOX"),
        "status": "active",
        "type": "email",
        "sortField": "updatedAt",
        "sortOrder": "desc",
        "page": "1",
        "pageSize": "100"
    }
    headers = {
        "X-FreeScout-API-Key": os.getenv("FREESCOUT_API_KEY"),
    }

    conversations = requests.get(
        f"https://ticket.woodburn.au/api/conversations", json=params, headers=headers)

    if conversations.status_code != 200:
        return jsonify({"email": email, "error": "Could not get conversations"}, status=400)

    threads = []
    conversations = conversations.json()
    for conversation in conversations["_embedded"]["conversations"]:
        addresses = conversation["cc"]
        for address in addresses:
            if address == email or address == altemail:
                threads.append(parse_email(conversation))

    return {"email": email, "emailalt": altemail,"conversations": threads} 


@cache
def get_conversation(id):
    params = {
        "number": id,
        "embed": "threads",
        "mailboxId": os.getenv("FREESCOUT_MAILBOX"),
        "status": "active",
        "type": "email",
        "sortField": "updatedAt",
        "sortOrder": "desc",
        "page": "1",
        "pageSize": "100",

    }
    headers = {
        "X-FreeScout-API-Key": os.getenv("FREESCOUT_API_KEY"),
    }

    conversations = requests.get(
        f"https://ticket.woodburn.au/api/conversations", json=params, headers=headers)

    if conversations.status_code != 200:
        return {"conversations": []}

    threads = []
    conversations = conversations.json()
    for conversation in conversations["_embedded"]["conversations"]:
        threads.append(parse_email(conversation))

    return threads


@app.route("/<path:path>")
def catch_all(path: str):
    if os.path.isfile("templates/" + path):
        return render_template(path)

    # Try with .html
    if os.path.isfile("templates/" + path + ".html"):
        return render_template(path + ".html")

    if os.path.isfile("templates/" + path.strip("/") + ".html"):
        return render_template(path.strip("/") + ".html")

    # Try to find a file matching
    if path.count("/") < 1:
        # Try to find a file matching
        filename = find(path, "templates")
        if filename:
            return send_file(filename)

    return render_template("404.html"), 404


# endregion
def parse_email(conversation):
    messages = []
    threads = conversation["_embedded"]["threads"]
    for thread in threads:
        messages.append({
            "from": thread["createdBy"]["email"],
            "name": f'{thread["createdBy"]["firstName"]} {thread["createdBy"]["lastName"]}',
            "body": thread["body"],
            "date": thread["createdAt"],
            "to": thread["to"],
            "subject": conversation["subject"]
        })

    return {"messages": messages, "id": conversation["id"]}

# region Error Catching
# 404 catch all


@app.errorhandler(404)
def not_found(e):
    return render_template("404.html"), 404


# endregion
if __name__ == "__main__":
    app.run(debug=True, port=5000, host="0.0.0.0")