from os import path
from flask import render_template, Blueprint, request, session, flash
from flask import send_from_directory, redirect, url_for, current_app
from werkzeug.utils import secure_filename
from secrets import token_urlsafe
from suchwow import wownero
from suchwow import config
from suchwow.models import Post, Comment
from suchwow.utils.decorators import login_required, profile_required
from suchwow.utils.helpers import allowed_file


bp = Blueprint("post", "post")

@bp.route("/posts/top")
def top():
    top_posts = {}
    posts = Post.select()
    for post in posts:
        transfers = []
        incoming = wownero.Wallet().incoming_transfers(post.account_index)
        if "transfers" in incoming:
            for xfer in incoming["transfers"]:
                transfers.append(wownero.from_atomic(xfer["amount"]))
        total = sum(transfers)
        if total > 0:
            top_posts[float(total)] = post
    return render_template("post/top.html", posts=sorted(top_posts.items(), reverse=True))

@bp.route("/post/<id>")
def read(id):
    if Post.filter(id=id):
        wallet = wownero.Wallet()
        post = Post.get(id=id)
        comments = Comment.select().where(Comment.post==post.id)
        if wallet.connected:
            address = wallet.get_address(account=post.account_index)
            transfers = wallet.transfers(account=post.account_index)
        else:
            address = "?"
            transfers = "?"
        return render_template(
            "post/read.html",
            post=post,
            address=address,
            comments=comments,
            transfers=transfers
        )
    else:
        flash("No meme there, brah")
        return redirect(url_for("index"))

@bp.route("/post/create", methods=["GET", "POST"])
@login_required
@profile_required
def create():
    if request.method == "POST":
        submitter = session["auth"]["preferred_username"]
        if submitter in config.BANNED_USERS:
            reason = config.BANNED_USERS[submitter]
            flash(f"You can't post for now: {reason}")
            return redirect("/")
        post_title = request.form.get("title")
        # check if the post request has the file part
        if "file" not in request.files:
            flash("You didn't upload a caliente meme, bro! You're fuckin up!")
            return redirect(request.url)
        file = request.files["file"]
        # if user does not select file, browser also
        # submit an empty part without filename
        if file.filename == "":
            flash("You didn't upload a caliente meme, bro! You're fuckin up!")
            return redirect(request.url)
        if post_title is "":
            flash("You didn't give your meme a spicy title, bro! You're fuckin up!")
            return redirect(request.url)
        if file and allowed_file(file.filename):
            filename =  "{}-{}".format(
                token_urlsafe(12),
                secure_filename(file.filename)
            )
            save_path_base = path.join(current_app.config["DATA_FOLDER"], "uploads")
            save_path = path.join(save_path_base, filename)
            file.save(save_path)
            try:
                wallet = wownero.Wallet()
                account_index = wallet.new_account()
            except:
                account_index = 0
            post = Post(
                title=post_title,
                text=request.form.get("text", ""),
                submitter=submitter,
                image_name=filename,
                account_index=account_index,
                address_index=0
            )
            post.save()
            return redirect(url_for("post.read", id=post.id))
    return render_template("post/create.html")

@bp.route("/post/<id>/delete")
@login_required
def delete(id):
    filtered = Post.filter(id=id)
    user = session["auth"]["preferred_username"]
    if filtered:
        post = filtered.first()
        if user == post.submitter:
            post.delete_instance()
            flash("Deleted that shit, brah!")
            return redirect(url_for("index"))
        else:
            flash("You can't delete a meme you don't own, brah")
            return redirect(url_for("post.read", id=post.id))
    else:
        flash("No meme there, brah")
        return redirect(url_for("index"))

@bp.route("/uploads/<path:filename>")
def uploaded_file(filename):
    file_path = path.join(current_app.config["DATA_FOLDER"], "uploads")
    return send_from_directory(file_path, filename)