import subprocess
import os
import json
import pyperclip
from qutebrowser.api import interceptor
import urwid
import sys

PASS_STORE = os.path.expanduser("~/.password-store")
IGNORE_DOMAINS = ["localhost", "127.0.0.1"]

def get_pass_entries():
    """Returns a list of all password entries in the store."""
    result = subprocess.run(["pass", "ls"], capture_output=True, text=True)
    if result.returncode != 0:
        return []
    return [line.strip().replace(" ", "") for line in result.stdout.split("\n") if line]


def find_matching_entry(url):
    """Finds the closest matching pass entry for a given URL."""
    domain = url.split("/")[2] if "://" in url else url
    if domain in IGNORE_DOMAINS:
        return None
    
    entries = get_pass_entries()
    
    for entry in entries:
        if domain in entry.lower():
            return entry
    return None


def get_password(entry):
    """Retrieves the password from pass."""
    result = subprocess.run(["pass", entry], capture_output=True, text=True)
    if result.returncode != 0:
        return None
    lines = result.stdout.strip().split("\n")
    
    username = None
    password = lines[0]  # First line is password
    
    if len(lines) > 1:
        for line in lines[1:]:
            if line.startswith("username:"):
                username = line.split(":", 1)[1].strip()
    
    return username, password


def show_tui(entries):
    """Shows a TUI menu for manual password selection."""
    def on_select(button, choice):
        global selected_entry
        selected_entry = choice
        raise urwid.ExitMainLoop()

    body = [urwid.Text("Select a password entry:"), urwid.Divider()]
    for entry in entries:
        button = urwid.Button(entry)
        urwid.connect_signal(button, 'click', on_select, entry)
        body.append(urwid.AttrMap(button, None, focus_map='reversed'))

    main_widget = urwid.ListBox(urwid.SimpleFocusListWalker(body))
    urwid.MainLoop(main_widget).run()
    
    return selected_entry


def autofill_password(url):
    """Handles autofilling the password in qutebrowser."""
    entry = find_matching_entry(url)

    if not entry:
        entries = get_pass_entries()
        entry = show_tui(entries)

    if entry:
        username, password = get_password(entry)
        if not password:
            print("Error: No password found.")
            return

        js_script = """
        (function() {
            let inputs = document.querySelectorAll('input[type="password"]');
            if (inputs.length === 0) {
                alert('No password field found!');
                return;
            }
            let passwordField = inputs[0];
            let form = passwordField.closest('form');
            let userField = form.querySelector('input[type="text"], input[type="email"]');

            if (!userField) {
                alert('No username field found!');
                return;
            }

            userField.value = "%s";
            passwordField.value = "%s";
        })();
        """ % (username or "", password)

        with open("/tmp/qute_autofill.js", "w") as f:
            f.write(js_script)

        subprocess.run(["qutebrowser", ":jseval file:///tmp/qute_autofill.js"])
    else:
        print("No entry selected.")

if __name__ == "__main__":
    if len(sys.argv) < 2:
        print("Usage: python qute_pass_manager.py <current_url>")
        sys.exit(1)
    
    url = sys.argv[1]
    autofill_password(url)