import logging
import shutil
import sys
import tkinter.filedialog
from collections import defaultdict
from pathlib import Path
from typing import Optional

import click
from ruamel.yaml import YAML

from devine.core.config import Config, config
from devine.core.console import console
from devine.core.constants import context_settings
from devine.core.credential import Credential


@click.group(
    short_help="Manage cookies and credentials for profiles of services.",
    context_settings=context_settings)
@click.pass_context
def auth(ctx: click.Context) -> None:
    """Manage cookies and credentials for profiles of services."""
    ctx.obj = logging.getLogger("auth")


@auth.command(
    name="list",
    short_help="List profiles and their state for a service or all services.",
    context_settings=context_settings)
@click.argument("service", type=str, required=False)
def list_(service: Optional[str] = None) -> None:
    """
    List profiles and their state for a service or all services.

    \b
    Profile and Service names are case-insensitive.
    """
    service_f = service

    auth_data: dict[str, dict[str, list]] = defaultdict(lambda: defaultdict(list))

    if config.directories.cookies.exists():
        for cookie_dir in config.directories.cookies.iterdir():
            service = cookie_dir.name
            for cookie in cookie_dir.glob("*.txt"):
                if cookie.stem not in auth_data[service]:
                    auth_data[service][cookie.stem].append("Cookie")

    for service, credentials in config.credentials.items():
        for profile in credentials:
            auth_data[service][profile].append("Credential")

    for service, profiles in dict(sorted(auth_data.items())).items():  # type:ignore
        if service_f and service != service_f.upper():
            continue
        console.log(service)
        for profile, authorizations in dict(sorted(profiles.items())).items():
            console.log(f'  "{profile}": {", ".join(authorizations)}')


@auth.command(
    short_help="View profile cookies and credentials for a service.",
    context_settings=context_settings)
@click.argument("profile", type=str)
@click.argument("service", type=str)
@click.pass_context
def view(ctx: click.Context, profile: str, service: str) -> None:
    """
    View profile cookies and credentials for a service.

    \b
    Profile and Service names are case-sensitive.
    """
    log = ctx.obj
    service_f = service
    profile_f = profile
    found = False

    for cookie_dir in config.directories.cookies.iterdir():
        if cookie_dir.name == service_f:
            for cookie in cookie_dir.glob("*.txt"):
                if cookie.stem == profile_f:
                    console.log(f"Cookie: {cookie}")
                    log.debug(cookie.read_text(encoding="utf8").strip())
                    found = True
                    break

    for service, credentials in config.credentials.items():
        if service == service_f:
            for profile, credential in credentials.items():
                if profile == profile_f:
                    console.log(f"Credential: {':'.join(list(credential))}")
                    found = True
                    break

    if not found:
        raise click.ClickException(
            f"Could not find Profile '{profile_f}' for Service '{service_f}'."
            f"\nThe profile and service values are case-sensitive."
        )


@auth.command(
    short_help="Check what profile is used by services.",
    context_settings=context_settings)
@click.argument("service", type=str, required=False)
def status(service: Optional[str] = None) -> None:
    """
    Check what profile is used by services.

    \b
    Service names are case-sensitive.
    """
    found_profile = False
    for service_, profile in config.profiles.items():
        if not service or service_.upper() == service.upper():
            console.log(f"{service_}: {profile or '--'}")
            found_profile = True

    if not found_profile:
        console.log(f"No profile has been explicitly set for {service}")

    default = config.profiles.get("default", "not set")
    console.log(f"The default profile is {default}")


@auth.command(
    short_help="Delete a profile and all of its authorization from a service.",
    context_settings=context_settings)
@click.argument("profile", type=str)
@click.argument("service", type=str)
@click.option("--cookie", is_flag=True, default=False, help="Only delete the cookie.")
@click.option("--credential", is_flag=True, default=False, help="Only delete the credential.")
def delete(profile: str, service: str, cookie: bool, credential: bool):
    """
    Delete a profile and all of its authorization from a service.

    \b
    By default this does remove both Cookies and Credentials.
    You may remove only one of them with --cookie or --credential.

    \b
    Profile and Service names are case-sensitive.
    Comments may be removed from config!
    """
    service_f = service
    profile_f = profile
    found = False

    if not credential:
        for cookie_dir in config.directories.cookies.iterdir():
            if cookie_dir.name == service_f:
                for cookie_ in cookie_dir.glob("*.txt"):
                    if cookie_.stem == profile_f:
                        cookie_.unlink()
                        console.log(f"Deleted Cookie: {cookie_}")
                        found = True
                        break

    if not cookie:
        for key, credentials in config.credentials.items():
            if key == service_f:
                for profile, credential_ in credentials.items():
                    if profile == profile_f:
                        config_path = Config._Directories.user_configs / Config._Filenames.root_config
                        yaml, data = YAML(), None
                        yaml.default_flow_style = False
                        data = yaml.load(config_path)
                        del data["credentials"][key][profile_f]
                        yaml.dump(data, config_path)
                        console.log(f"Deleted Credential: {credential_}")
                        found = True
                        break

    if not found:
        raise click.ClickException(
            f"Could not find Profile '{profile_f}' for Service '{service_f}'."
            f"\nThe profile and service values are case-sensitive."
        )


@auth.command(
    short_help="Add a Credential and/or Cookies to an existing or new profile for a service.",
    context_settings=context_settings)
@click.argument("profile", type=str)
@click.argument("service", type=str)
@click.option("--cookie", type=str, default=None, help="Direct path to Cookies to add.")
@click.option("--credential", type=str, default=None, help="Direct Credential string to add.")
@click.pass_context
def add(ctx: click.Context, profile: str, service: str, cookie: Optional[str] = None, credential: Optional[str] = None):
    """
    Add a Credential and/or Cookies to an existing or new profile for a service.

    \b
    Cancel the Open File dialogue when presented if you do not wish to provide
    cookies. The Credential should be in `Username:Password` form. The username
    may be an email. If you do not wish to add a Credential, just hit enter.

    \b
    Profile and Service names are case-sensitive!
    Comments may be removed from config!
    """
    log = ctx.obj
    service = service.upper()
    profile = profile.lower()

    if cookie:
        cookie = Path(cookie)
        if not cookie.is_file():
            log.error(f"No such file or directory: {cookie}.")
            sys.exit(1)
    else:
        print("Opening File Dialogue, select a Cookie file to import.")
        cookie = tkinter.filedialog.askopenfilename(
            title="Select a Cookie file (Cancel to skip)",
            filetypes=[("Cookies", "*.txt"), ("All files", "*.*")]
        )
        if cookie:
            cookie = Path(cookie)
        else:
            console.log("Skipped adding a Cookie...")

    if credential:
        try:
            credential = Credential.loads(credential)
        except ValueError as e:
            raise click.ClickException(str(e))
    else:
        credential = input("Credential: ")
        if credential:
            try:
                credential = Credential.loads(credential)
            except ValueError as e:
                raise click.ClickException(str(e))
        else:
            console.log("Skipped adding a Credential...")

    if cookie:
        final_path = (config.directories.cookies / service / profile).with_suffix(".txt")
        final_path.parent.mkdir(parents=True, exist_ok=True)
        if final_path.exists():
            log.error(f"A Cookie file for the Profile {profile} on {service} already exists.")
            sys.exit(1)
        shutil.move(cookie, final_path)
        console.log(f"Moved Cookie file to: {final_path}")

    if credential:
        config_path = Config._Directories.user_configs / Config._Filenames.root_config
        yaml, data = YAML(), None
        yaml.default_flow_style = False
        data = yaml.load(config_path)
        if not data:
            data = {}
        if "credentials" not in data:
            data["credentials"] = {}
        if service not in data["credentials"]:
            data["credentials"][service] = {}
        data["credentials"][service][profile] = credential.dumps()
        yaml.dump(data, config_path)
        console.log(f"Added Credential: {credential}")