import Config from "./config";

import Utils from "./utils";
import { SponsorTime, SponsorHideType } from "./types";
import { Message, MessageResponse } from "./messageTypes";
const utils = new Utils();

interface MessageListener {
    (request: Message, sender: unknown, sendResponse: (response: MessageResponse) => void): void;
}

class MessageHandler {
    messageListener: MessageListener;

    constructor (messageListener?: MessageListener) {
        this.messageListener = messageListener;
    }

    sendMessage(id: number, request: Message, callback?) {
        if (this.messageListener) {
            this.messageListener(request, null, callback);
        } else {
            chrome.tabs.sendMessage(id, request, callback);
        }
    }

    query(config, callback) {
        if (this.messageListener) {
            // Send back dummy info
            callback([{
                url: document.URL,
                id: -1
            }]);
        } else {
            chrome.tabs.query(config, callback);
        }

    }
}



//make this a function to allow this to run on the content page
async function runThePopup(messageListener?: MessageListener): Promise<void> {
    const messageHandler = new MessageHandler(messageListener);

    utils.localizeHtmlPage();

    await utils.wait(() => Config.config !== null);

    type InputPageElements = {
        whitelistToggle?: HTMLInputElement,
        toggleSwitch?: HTMLInputElement,
        usernameInput?: HTMLInputElement,
    };
    type PageElements = { [key: string]: HTMLElement } & InputPageElements

    const PageElements: PageElements = {};

    [
        "sponsorblockPopup",
        "sponsorStart",
        // Top toggles
        "whitelistChannel",
        "unwhitelistChannel",
        "whitelistToggle",
        "whitelistForceCheck",
        "disableSkipping",
        "enableSkipping",
        "toggleSwitch",
        // Options
        "showNoticeAgain",
        "optionsButton",
        "helpButton",
        // More controls
        "submitTimes",
        "sponsorTimesContributionsContainer",
        "sponsorTimesContributionsDisplay",
        "sponsorTimesViewsContainer",
        "sponsorTimesViewsDisplay",
        "sponsorTimesViewsDisplayEndWord",
        "sponsorTimesOthersTimeSavedDisplay",
        "sponsorTimesOthersTimeSavedEndWord",
        "sponsorTimesSkipsDoneContainer",
        "sponsorTimesSkipsDoneDisplay",
        "sponsorTimesSkipsDoneEndWord",
        "sponsorTimeSavedDisplay",
        "sponsorTimeSavedEndWord",
        // Username
        "setUsernameContainer",
        "setUsernameButton",
        "setUsernameStatusContainer",
        "setUsernameStatus",
        "setUsername",
        "usernameInput",
        "usernameValue",
        "submitUsername",
        // More
        "submissionSection",
        "mainControls",
        "loadingIndicator",
        "videoFound",
        "sponsorMessageTimes",
        //"downloadedSponsorMessageTimes",
        "whitelistButton",
    ].forEach(id => PageElements[id] = document.getElementById(id));

    //setup click listeners
    PageElements.sponsorStart.addEventListener("click", sendSponsorStartMessage);
    PageElements.whitelistToggle.addEventListener("change", function() {
        if (this.checked) {
            whitelistChannel();
        } else {
            unwhitelistChannel();
        }
    });
    PageElements.whitelistForceCheck.addEventListener("click", openOptions);
    PageElements.toggleSwitch.addEventListener("change", function() {
        toggleSkipping(!this.checked);
    });
    PageElements.submitTimes.addEventListener("click", submitTimes);
    PageElements.showNoticeAgain.addEventListener("click", showNoticeAgain);
    PageElements.setUsernameButton.addEventListener("click", setUsernameButton);
    PageElements.usernameValue.addEventListener("click", setUsernameButton);
    PageElements.submitUsername.addEventListener("click", submitUsername);
    PageElements.optionsButton.addEventListener("click", openOptions);
    PageElements.helpButton.addEventListener("click", openHelp);

    //if true, the button now selects the end time
    let startTimeChosen = false;

    //the start and end time pairs (2d)
    let sponsorTimes: SponsorTime[] = [];

    //current video ID of this tab
    let currentVideoID = null;

    //show proper disable skipping button
    const disableSkipping = Config.config.disableSkipping;
    if (disableSkipping != undefined && disableSkipping) {
        PageElements.disableSkipping.style.display = "none";
        PageElements.enableSkipping.style.display = "unset";
        PageElements.toggleSwitch.checked = false;
    }

    //if the don't show notice again variable is true, an option to
    //  disable should be available
    const dontShowNotice = Config.config.dontShowNotice;
    if (dontShowNotice != undefined && dontShowNotice) {
        PageElements.showNoticeAgain.style.display = "unset";
    }

    utils.sendRequestToServer("GET", "/api/getUsername?userID=" + Config.config.userID, (res) => {
        if (res.status === 200) {
            PageElements.usernameValue.innerText = JSON.parse(res.responseText).userName
        }
    })

    //get the amount of times this user has contributed and display it to thank them
    if (Config.config.sponsorTimesContributed != undefined) {
        PageElements.sponsorTimesContributionsDisplay.innerText = Config.config.sponsorTimesContributed.toLocaleString();
        PageElements.sponsorTimesContributionsContainer.classList.remove("hidden");

        //get the userID
        const userID = Config.config.userID;
        if (userID != undefined) {
            //there are probably some views on these submissions then
            //get the amount of views from the sponsors submitted
            utils.sendRequestToServer("GET", "/api/getViewsForUser?userID=" + userID, function(response) {
                if (response.status == 200) {
                    const viewCount = JSON.parse(response.responseText).viewCount;
                    if (viewCount != 0) {
                        if (viewCount > 1) {
                            PageElements.sponsorTimesViewsDisplayEndWord.innerText = chrome.i18n.getMessage("Segments");
                        } else {
                            PageElements.sponsorTimesViewsDisplayEndWord.innerText = chrome.i18n.getMessage("Segment");
                        }

                        PageElements.sponsorTimesViewsDisplay.innerText = viewCount.toLocaleString();
                        PageElements.sponsorTimesViewsContainer.style.display = "unset";
                    }
                }
            });

            //get this time in minutes
            utils.sendRequestToServer("GET", "/api/getSavedTimeForUser?userID=" + userID, function(response) {
                if (response.status == 200) {
                    const minutesSaved = JSON.parse(response.responseText).timeSaved;
                    if (minutesSaved != 0) {
                        if (minutesSaved != 1) {
                            PageElements.sponsorTimesOthersTimeSavedEndWord.innerText = chrome.i18n.getMessage("minsLower");
                        } else {
                            PageElements.sponsorTimesOthersTimeSavedEndWord.innerText = chrome.i18n.getMessage("minLower");
                        }

                        PageElements.sponsorTimesOthersTimeSavedDisplay.innerText = getFormattedHours(minutesSaved);
                    }
                }
            });
        }
    }

    //get the amount of times this user has skipped a sponsor
    if (Config.config.skipCount != undefined) {
        if (Config.config.skipCount != 1) {
            PageElements.sponsorTimesSkipsDoneEndWord.innerText = chrome.i18n.getMessage("Segments");
        } else {
            PageElements.sponsorTimesSkipsDoneEndWord.innerText = chrome.i18n.getMessage("Segment");
        }

        PageElements.sponsorTimesSkipsDoneDisplay.innerText = Config.config.skipCount.toLocaleString();
        PageElements.sponsorTimesSkipsDoneContainer.style.display = "unset";
    }

    //get the amount of time this user has saved.
    if (Config.config.minutesSaved != undefined) {
        if (Config.config.minutesSaved != 1) {
            PageElements.sponsorTimeSavedEndWord.innerText = chrome.i18n.getMessage("minsLower");
        } else {
            PageElements.sponsorTimeSavedEndWord.innerText = chrome.i18n.getMessage("minLower");
        }

        PageElements.sponsorTimeSavedDisplay.innerText = getFormattedHours(Config.config.minutesSaved);
    }

    // Must be delayed so it only happens once loaded
    setTimeout(() => PageElements.sponsorblockPopup.classList.remove("preload"), 250);

    messageHandler.query({
            active: true,
            currentWindow: true
    }, onTabs);

    function onTabs(tabs) {
        messageHandler.sendMessage(tabs[0].id, {message: 'getVideoID'}, function(result) {
            if (result != undefined && result.videoID) {
                currentVideoID = result.videoID;
                loadTabData(tabs);
            } else if (result == undefined && chrome.runtime.lastError) {
                // this isn't a YouTube video then, or at least the content script is not loaded
                displayNoVideo();
            }
        });
    }

    function loadTabData(tabs) {
        if (!currentVideoID) {
            //this isn't a YouTube video then
            displayNoVideo();
            return;
        }

        //load video times for this video
        const sponsorTimesStorage = Config.config.segmentTimes.get(currentVideoID);
        if (sponsorTimesStorage != undefined && sponsorTimesStorage.length > 0) {
            if (sponsorTimesStorage[sponsorTimesStorage.length - 1] != undefined && sponsorTimesStorage[sponsorTimesStorage.length - 1].segment.length < 2) {
                startTimeChosen = true;
                PageElements.sponsorStart.innerHTML = chrome.i18n.getMessage("sponsorEnd");
            }

            sponsorTimes = sponsorTimesStorage;

            //show submission section
            PageElements.submissionSection.style.display = "unset";

            showSubmitTimesIfNecessary();
        }

        //check if this video's sponsors are known
        messageHandler.sendMessage(
            tabs[0].id,
            {message: 'isInfoFound'},
            infoFound
        );
    }

    function infoFound(request: {found: boolean, sponsorTimes: SponsorTime[]}) {
        if(chrome.runtime.lastError) {
            //This page doesn't have the injected content script, or at least not yet
            displayNoVideo();
            return;
        }

        //if request is undefined, then the page currently being browsed is not YouTube
        if (request != undefined) {
            //remove loading text
            PageElements.mainControls.style.display = "flex";
            PageElements.whitelistButton.classList.remove("hidden");
            PageElements.loadingIndicator.style.display = "none";

            if (request.found) {
                PageElements.videoFound.innerHTML = chrome.i18n.getMessage("sponsorFound");

                displayDownloadedSponsorTimes(request);
            } else {
                PageElements.videoFound.innerHTML = chrome.i18n.getMessage("sponsor404");
            }
        }

        //see if whitelist button should be swapped
        messageHandler.query({
            active: true,
            currentWindow: true
        }, tabs => {
            messageHandler.sendMessage(
                tabs[0].id,
                {message: 'isChannelWhitelisted'},
                function(response) {
                    if (response.value) {
                        PageElements.whitelistChannel.style.display = "none";
                        PageElements.unwhitelistChannel.style.display = "unset";
                        PageElements.whitelistToggle.checked = true;
                        document.querySelectorAll('.SBWhitelistIcon')[0].classList.add("rotated");
                    }
                });
            }
        );
    }

    function sendSponsorStartMessage() {
        //the content script will get the message if a YouTube page is open
        messageHandler.query({
            active: true,
            currentWindow: true
        }, tabs => {
            messageHandler.sendMessage(
                tabs[0].id,
                {from: 'popup', message: 'sponsorStart'},
                startSponsorCallback
            );
        });
    }

    function startSponsorCallback(response) {
        const sponsorTimesIndex = sponsorTimes.length - (startTimeChosen ? 1 : 0);

        if (sponsorTimes[sponsorTimesIndex] == undefined) {
            sponsorTimes[sponsorTimesIndex] = {
                segment: [],
                category: Config.config.defaultCategory,
                UUID: null
            };
        }

        sponsorTimes[sponsorTimesIndex].segment[startTimeChosen ? 1 : 0] = response.time;

        const localStartTimeChosen = startTimeChosen;
        Config.config.segmentTimes.set(currentVideoID, sponsorTimes);

        //send a message to the client script
        if (localStartTimeChosen) {
            messageHandler.query({
                active: true,
                currentWindow: true
            }, tabs => {
                messageHandler.sendMessage(
                    tabs[0].id,
                    {message: "sponsorDataChanged"}
                );
            });
        }

        updateStartTimeChosen();

        //show submission section
        PageElements.submissionSection.style.display = "unset";

        showSubmitTimesIfNecessary();
    }

    //display the video times from the array at the top, in a different section
    function displayDownloadedSponsorTimes(request: {found: boolean, sponsorTimes: SponsorTime[]}) {
        if (request.sponsorTimes != undefined) {

            // Sort list by start time
            const segmentTimes = request.sponsorTimes
                                .sort((a, b) => a.segment[1] - b.segment[1])
                                .sort((a, b) => a.segment[0] - b.segment[0]);

            //add them as buttons to the issue reporting container
            const container = document.getElementById("issueReporterTimeButtons");
            for (let i = 0; i < segmentTimes.length; i++) {
                const UUID = segmentTimes[i].UUID;

                const sponsorTimeButton = document.createElement("button");
                sponsorTimeButton.className = "segmentTimeButton popupElement";

                const prefix = utils.shortCategoryName(segmentTimes[i].category) + ": ";

                let extraInfo = "";
                if (segmentTimes[i].hidden === SponsorHideType.Downvoted) {
                    //this one is downvoted
                    extraInfo = " (" + chrome.i18n.getMessage("hiddenDueToDownvote") + ")";
                } else if (segmentTimes[i].hidden === SponsorHideType.MinimumDuration) {
                    //this one is too short
                    extraInfo = " (" + chrome.i18n.getMessage("hiddenDueToDuration") + ")";
                }

                sponsorTimeButton.innerText = prefix + getFormattedTime(segmentTimes[i].segment[0]) + " " + chrome.i18n.getMessage("to") + " " + getFormattedTime(segmentTimes[i].segment[1]) + extraInfo;

                const categoryColorCircle = document.createElement("span");
                categoryColorCircle.id = "sponsorTimesCategoryColorCircle" + UUID;
                categoryColorCircle.style.backgroundColor = Config.config.barTypes[segmentTimes[i].category].color;
                categoryColorCircle.classList.add("dot");
                categoryColorCircle.classList.add("sponsorTimesCategoryColorCircle");

                const votingButtons = document.createElement("div");
                votingButtons.classList.add("votingButtons");

                //thumbs up and down buttons
                const voteButtonsContainer = document.createElement("div");
                voteButtonsContainer.id = "sponsorTimesVoteButtonsContainer" + UUID;
                voteButtonsContainer.setAttribute("align", "center");
                voteButtonsContainer.style.display = "none"

                const upvoteButton = document.createElement("img");
                upvoteButton.id = "sponsorTimesUpvoteButtonsContainer" + UUID;
                upvoteButton.className = "voteButton";
                upvoteButton.src = chrome.extension.getURL("icons/thumbs_up.svg");
                upvoteButton.addEventListener("click", () => vote(1, UUID));

                const downvoteButton = document.createElement("img");
                downvoteButton.id = "sponsorTimesDownvoteButtonsContainer" + UUID;
                downvoteButton.className = "voteButton";
                downvoteButton.src = chrome.extension.getURL("icons/thumbs_down.svg");
                downvoteButton.addEventListener("click", () => vote(0, UUID));

                //add thumbs up and down buttons to the container
                voteButtonsContainer.appendChild(upvoteButton);
                voteButtonsContainer.appendChild(downvoteButton);

                //add click listener to open up vote panel
                sponsorTimeButton.addEventListener("click", function() {
                    voteButtonsContainer.style.removeProperty("display");
                });

                // Will contain request status
                const voteStatusContainer = document.createElement("div");
                voteStatusContainer.id = "sponsorTimesVoteStatusContainer" + UUID;
                voteStatusContainer.classList.add("sponsorTimesVoteStatusContainer");
                voteStatusContainer.style.display = "none";

                const thanksForVotingText = document.createElement("div");
                thanksForVotingText.id = "sponsorTimesThanksForVotingText" + UUID;
                thanksForVotingText.classList.add("sponsorTimesThanksForVotingText");
                voteStatusContainer.appendChild(thanksForVotingText);

                votingButtons.append(categoryColorCircle);
                votingButtons.append(sponsorTimeButton);
                votingButtons.append(voteButtonsContainer);
                votingButtons.append(voteStatusContainer);

                container.appendChild(votingButtons);
            }
        }
    }

    function submitTimes() {
        if (sponsorTimes.length > 0) {
            messageHandler.query({
                active: true,
                currentWindow: true
            }, tabs => {
                messageHandler.sendMessage(
                    tabs[0].id,
                    {message: 'submitTimes'},
                );
            });
        }
    }
  
    function showNoticeAgain() {
        Config.config.dontShowNotice = false;
  
        PageElements.showNoticeAgain.style.display = "none";
    }

    function updateStartTimeChosen() {
        //update startTimeChosen letiable
        if (!startTimeChosen) {
            startTimeChosen = true;
            PageElements.sponsorStart.innerHTML = chrome.i18n.getMessage("sponsorEnd");
        } else {
            resetStartTimeChosen();
        }
    }
  
    //set it to false
    function resetStartTimeChosen() {
        startTimeChosen = false;
        PageElements.sponsorStart.innerHTML = chrome.i18n.getMessage("sponsorStart");
    }
  
    //hides and shows the submit times button when needed
    function showSubmitTimesIfNecessary() {
        //check if an end time has been specified for the latest sponsor time
        if (sponsorTimes.length > 0 && sponsorTimes[sponsorTimes.length - 1].segment.length > 1) {
            //show submit times button
            document.getElementById("submitTimesContainer").style.display = "flex";
        } else {
            //hide submit times button
            document.getElementById("submitTimesContainer").style.display = "none";
        }
    }
  
    //make the options div visible
    function openOptions() {
        chrome.runtime.sendMessage({"message": "openConfig"});
    }

    function openHelp() {
        chrome.runtime.sendMessage({"message": "openHelp"});
    }

    //make the options username setting option visible
    function setUsernameButton() {
        PageElements.usernameInput.value = PageElements.usernameValue.innerText;

        PageElements.submitUsername.style.display = "unset";
        PageElements.usernameInput.style.display = "unset";

        PageElements.setUsernameContainer.style.display = "none";
        PageElements.setUsername.style.display = "flex";
        PageElements.setUsername.classList.add("SBExpanded");
        
        PageElements.setUsernameStatusContainer.style.display = "none";

        PageElements.sponsorTimesContributionsContainer.classList.add("hidden");
    }

    //submit the new username
    function submitUsername() {
        //add loading indicator
        PageElements.setUsernameStatusContainer.style.display = "unset";
        PageElements.setUsernameStatus.innerText = chrome.i18n.getMessage("Loading");

        utils.sendRequestToServer("POST", "/api/setUsername?userID=" + Config.config.userID + "&username=" + PageElements.usernameInput.value, function (response) {
            if (response.status == 200) {
                //submitted
                PageElements.submitUsername.style.display = "none";
                PageElements.usernameInput.style.display = "none";

                PageElements.setUsernameContainer.style.removeProperty("display");
                PageElements.setUsername.classList.remove("SBExpanded");
                PageElements.usernameValue.innerText = PageElements.usernameInput.value;

                PageElements.setUsernameStatusContainer.style.display = "none";

                PageElements.sponsorTimesContributionsContainer.classList.remove("hidden");
            } else {
                PageElements.setUsernameStatus.innerText = utils.getErrorMessage(response.status, response.responseText);
            }
        });


        PageElements.setUsernameContainer.style.display = "none";
        PageElements.setUsername.style.display = "unset";
    }

    //this is not a YouTube video page
    function displayNoVideo() {
        document.getElementById("loadingIndicator").innerText = chrome.i18n.getMessage("noVideoID");
    }
  
    function addVoteMessage(message, UUID) {
        const voteButtonsContainer = document.getElementById("sponsorTimesVoteButtonsContainer" + UUID);
        voteButtonsContainer.style.display = "none";

        const voteStatusContainer = document.getElementById("sponsorTimesVoteStatusContainer" + UUID);
        voteStatusContainer.style.removeProperty("display");
        
        const thanksForVotingText = document.getElementById("sponsorTimesThanksForVotingText" + UUID);
        thanksForVotingText.innerText = message;
    }
  
    function vote(type, UUID) {
        //add loading info
        addVoteMessage(chrome.i18n.getMessage("Loading"), UUID);
  
        //send the vote message to the tab
        chrome.runtime.sendMessage({
            message: "submitVote",
            type: type,
            UUID: UUID
        }, function(response) {
            if (response != undefined) {
                //see if it was a success or failure
                if (response.successType == 1 || (response.successType == -1 && response.statusCode == 429)) {
                    //success (treat rate limits as a success)
                    addVoteMessage(chrome.i18n.getMessage("voted"), UUID);
                } else if (response.successType == -1) {
                    addVoteMessage(utils.getErrorMessage(response.statusCode, response.responseText), UUID);
                }
            }
        });
    }

    //converts time in seconds to minutes:seconds
    function getFormattedTime(seconds) {
        const minutes = Math.floor(seconds / 60);
        const secondsDisplayNumber = Math.round(seconds - minutes * 60);
        let secondsDisplay = String(secondsDisplayNumber);
        if (secondsDisplayNumber < 10) {
            //add a zero
            secondsDisplay = "0" + secondsDisplay;
        }
  
        const formatted = minutes + ":" + secondsDisplay;
  
        return formatted;
    }

    function whitelistChannel() {
        //get the channel url
        messageHandler.query({
            active: true,
            currentWindow: true
        }, tabs => {
            messageHandler.sendMessage(
                tabs[0].id,
                {message: 'getChannelID'},
                function(response) {
                    if (!response.channelID) {
                        alert(chrome.i18n.getMessage("channelDataNotFound") + "\n\n" + 
                            chrome.i18n.getMessage("itCouldBeAdblockerIssue"));
                        return;
                    }

                    //get whitelisted channels
                    let whitelistedChannels = Config.config.whitelistedChannels;
                    if (whitelistedChannels == undefined) {
                        whitelistedChannels = [];
                    }

                    //add on this channel
                    whitelistedChannels.push(response.channelID);

                    //change button
                    PageElements.whitelistChannel.style.display = "none";
                    PageElements.unwhitelistChannel.style.display = "unset";
                    document.querySelectorAll('.SBWhitelistIcon')[0].classList.add("rotated");

                    if (!Config.config.forceChannelCheck) PageElements.whitelistForceCheck.classList.remove("hidden");

                    //save this
                    Config.config.whitelistedChannels = whitelistedChannels;

                    //send a message to the client
                    messageHandler.query({
                        active: true,
                        currentWindow: true
                    }, tabs => {
                        messageHandler.sendMessage(
                            tabs[0].id, {
                                message: 'whitelistChange',
                                value: true
                            });
                        }
                    );
                }
            );
        });
    }

    function unwhitelistChannel() {
        //get the channel url
        messageHandler.query({
            active: true,
            currentWindow: true
        }, tabs => {
            messageHandler.sendMessage(
                tabs[0].id,
                {message: 'getChannelID'},
                function(response) {
                    //get whitelisted channels
                        let whitelistedChannels = Config.config.whitelistedChannels;
                        if (whitelistedChannels == undefined) {
                            whitelistedChannels = [];
                        }

                        //remove this channel
                        const index = whitelistedChannels.indexOf(response.channelID);
                        whitelistedChannels.splice(index, 1);

                        //change button
                        PageElements.whitelistChannel.style.display = "unset";
                        PageElements.unwhitelistChannel.style.display = "none";
                        document.querySelectorAll('.SBWhitelistIcon')[0].classList.remove("rotated");

                        //save this
                        Config.config.whitelistedChannels = whitelistedChannels;

                        //send a message to the client
                        messageHandler.query({
                            active: true,
                            currentWindow: true
                        }, tabs => {
                            messageHandler.sendMessage(
                                tabs[0].id, {
                                    message: 'whitelistChange',
                                    value: false
                                });
                            }
                        );
                }
            );
        });
    }

    /**
     * Should skipping be disabled (visuals stay)
     */
    function toggleSkipping(disabled) {
		Config.config.disableSkipping = disabled;

        let hiddenButton = PageElements.disableSkipping;
        let shownButton = PageElements.enableSkipping;

        if (!disabled) {
            hiddenButton = PageElements.enableSkipping;
            shownButton = PageElements.disableSkipping;
        }

        shownButton.style.display = "unset";
        hiddenButton.style.display = "none";
    }

    /**
     * Converts time in hours to 5h 25.1
     * If less than 1 hour, just returns minutes
     * 
     * @param {float} seconds 
     * @returns {string}
     */
    function getFormattedHours(minues) {
        const hours = Math.floor(minues / 60);
        return (hours > 0 ? hours + "h " : "") + (minues % 60).toFixed(1);
    }
  
//end of function
}

if (chrome.tabs != undefined) {
    //this means it is actually opened in the popup
    runThePopup();
}

export default runThePopup;