import os
import json
import dotenv
import requests
import time

dotenv.load_dotenv()
HSD_IP = os.getenv("HSD_IP")
HSD_API = os.getenv("HSD_API")

if not os.path.exists("data/listings.json"):
    with open("data/listings.json", "w") as f:
        f.write("[]")


# region Classes
class Listing:
    def __init__(self, **kwargs):
        self.domain = ''
        self.price = 0
        self.description = ''
        self.contact = ''
        self.signature = ''
        self.updated = -1

        for key, value in kwargs.items():
            setattr(self, key, value)
        
        self.price = int(self.price)
        # Fix any errors in the data
        if self.price < 0:
            self.price = 0
        
        self.description = self.description.replace('\n','')
        self.description = self.description.replace('\r','')
        self.description = self.description.strip()
        self.contact = self.contact.replace('\n','')
        self.updated = int(time.time())
        print(str(self))

    def __str__(self):
        return f"Domain: {self.domain}\nPrice: {self.price}\nDescription: {self.description}\nContact: {self.contact}" 
    
    def getMessage(self):
        return str(self).encode('utf-8').hex()
    
    def toHTML(self):
        return f"""
        <div class="card" style="margin: 10px;">
            <div class="card-body">
                <h4 class="card-title">{self.domain}/ <a style='text-decoration:none;' href="/verify/{self.domain}">✅</a></h4>
                <h6 class="text-muted card-subtitle mb-2">{self.price:,} HNS</h6>
                <p class="card-text">{self.description}</p>
                <p class="card-text">Contact: <code>{self.contact}</code></p>
                <a href="/delete/{self.domain}" class="btn btn-info">Delete Listing</a>
            </div>
        </div>
        """
    
    def toJSON(self):
        return {
            'domain': self.domain,
            'description': self.description,
            'price': self.price,
            'contact': self.contact,
            'signature': self.signature,
            'updated': self.updated
        }
    
    def signed(self):
        return validate_signature(self.domain,self.signature,self.getMessage())

    def txValid(self):
        # TODO Validate tx is valid
        return False

# endregion

def get_listings() -> list[Listing]:
    with open("data/listings.json", "r") as f:
        data = json.loads(f.read())

    listings = []
    for listing in data:
        listings.append(Listing(**listing))
    return listings

def search_listings(domain) -> Listing:
    listings = get_listings()
    for listing in listings:
        if listing.domain == domain:
            return listing
    return None

def remove_listing(domain) -> bool:
    listings = get_listings()
    for listing in listings:
        if listing.domain == domain:
            listings.remove(listing)
            saveListings(listings)
            return True
    return False

def get_listings_rendered() -> str:
    listings = get_listings()
    html = ""
    for listing in listings:
        html += listing.toHTML()
    return html

def saveListings(listings:list[Listing]):
    with open("data/listings.json", "w") as f:
        f.write(json.dumps(listings,default=Listing.toJSON,indent=4))

def add_listing(listing:Listing):
    # if not listing.txValid():
    #     return "Invalid tx"

    if not listing.signed():
        return "Not signed"

    # Remove any listings with the same domain
    remove_listing(listing.domain)

    listings = get_listings()
    listings.append(listing)
    saveListings(listings)
    return True

    
def validate_signature(domain,signature,message) -> bool:
    response = requests.post(f"http://x:{HSD_API}@{HSD_IP}:12037", json={
        "method":"verifymessagewithname",
        "params":[
            domain,
            signature,
            message
        ]
    })
    if response.status_code != 200:
        return False
    
    response = response.json()
    if response['result'] != True:
        return False
    return True

def validate_buy_tx(domain,tx) -> bool:
    return False

def validate_cancel_signature(domain,signature) -> bool:
    message = f"FS: {domain}"
    if (not validate_signature(domain,signature,message)):
        return False
    return True