import logging
from typing import List, Optional, Set

from selenium.common.exceptions import TimeoutException
from selenium.webdriver.remote.webelement import WebElement

from modules.browser_object_navigation import Navigation
from modules.page_base import BasePage


class TrackerPanel(BasePage):
    """
    BOM for the panel that shows up after clicking the shield
    """

    URL_TEMPLATE = ""

    def verify_allowed_blocked_trackers(
        self, allowed: Optional[Set[str]] = None, blocked: Optional[Set[str]] = None
    ) -> bool:
        """
        Given two sets of strings, one representing the allowed names of the type of trackers and one representing the blocked types of trackers,
        this function will return True if the tracking panel matches all of the entries in the sets, False if otherwise.

        Note: Strings in the set MUST be exactly the ones displayed in the tracker panel, otherwise this might fail.

        Example usage:
        blocked = set(["Cross-Site Tracking Cookies"])
        allowed = set(["Tracking Content"])

        assert tracker_panel.verify_allowed_blocked_trackers(allowed, blocked)
        """
        if allowed is None:
            allowed = set()
        if blocked is None:
            blocked = set()

        rm_blocked = False
        rm_allowed = False

        tracker_item_container = self.get_element("tracking-item-container")
        all_tracking_items = self.get_all_children(tracker_item_container)

        for item in all_tracking_items:
            # encounter a header (everything after it is blocked/allowed in the list)
            inner_html = item.get_attribute("innerHTML")
            if "Blocked" in inner_html:
                rm_blocked = True
                continue
            elif "Allowed" in inner_html:
                rm_allowed = True
                rm_blocked = False
                continue

            # assign a temp memory location, assign the set to it depending on the header seen earlier
            rm_set = set()
            to_rm_item = ""
            if rm_blocked:
                rm_set = blocked
            elif rm_allowed:
                rm_set = allowed

            # go through the possible strings to look for, remove it if appropriate
            for item in rm_set:
                if item in inner_html:
                    to_rm_item = item
                    break
            if to_rm_item != "":
                rm_set.remove(to_rm_item)

        if len(blocked) == 0 and len(allowed) == 0:
            return True
        return False

    def wait_for_blocked_tracking_icon(
        self, nav: Navigation, page: BasePage
    ) -> BasePage:
        """
        Waits for the shield icon to indicate that cookies/trackers are being blocked by continuously refresing the page

        Remember to open the passed in page beforehand, this waits for the page to load.

        Example Usage:
        first_tracker_website.open()
        tracker_panel.wait_for_blocked_tracking_icon(nav, first_tracker_website)
        """

        def shield_active() -> bool:
            nav.get_element("refresh-button").click()
            with self.driver.context(self.driver.CONTEXT_CONTENT):
                page.open()
                page.wait_for_page_to_load()
            shield_icon = self.get_element("shield-icon")
            if (
                shield_icon.get_attribute("data-l10n-id")
                == "tracking-protection-icon-active-container"
            ):
                return True
            return False

        try:
            with self.driver.context(self.context_id):
                self.wait.until(lambda _: shield_active())
        except TimeoutException:
            logging.warning(
                "The shield icon was not active after refreshing mulitple times, the test has timed out."
            )
        return self

    def wait_for_trackers(self, nav: Navigation, page: BasePage) -> BasePage:
        """
        Waits for trackers to appear

        Remember to open the passed in page beforehand, this waits for the page to load.

        Example Usage:
        first_tracker_website.open()
        tracker_panel.wait_for_blocked_tracking_icon(nav, first_tracker_website)
        """

        def message_not_present() -> bool:
            nav.get_element("refresh-button").click()
            with self.driver.context(self.driver.CONTEXT_CONTENT):
                page.open()
                page.wait_for_page_to_load()
            self.get_element("shield-icon").click()
            no_trackers_message = self.get_element("no-trackers-message")
            if no_trackers_message.get_attribute("hidden") == "true":
                return True
            return False

        try:
            with self.driver.context(self.context_id):
                self.wait.until(lambda _: message_not_present())
        except TimeoutException:
            logging.warning("No trackers were ever detected after the timeout period.")
        return self

    def verify_tracker_shield_indicator(self, nav: Navigation) -> BasePage:
        """
        Verifies that the shield icon is in the correct mode
        """
        with self.driver.context(self.context_id):
            shield_icon = self.get_element("shield-icon")
            assert (
                shield_icon.get_attribute("data-l10n-id")
                == "tracking-protection-icon-active-container"
            ), (
                "The label detected did not correspond to the expected one: tracking-protection-icon-active-container"
            )
        return self

    def open_and_return_cross_site_trackers(self) -> List[WebElement]:
        with self.driver.context(self.context_id):
            self.get_element("tracker-cross-site-tracking").click()
            return self.get_elements("tracking-cross-site-tracking-item")

    def open_and_return_allowed_trackers(self) -> List[WebElement]:
        with self.driver.context(self.context_id):
            self.get_element("tracker-tracking-content").click()
            return self.get_elements("tracking-allowed-content-item")