import { api } from "./api.js";
import { t } from "./i18n.js";
import { state } from "./state.js";
import { $, toast } from "./dom.js";
import { renderAdminLinker, renderAdminVoteStatus } from "./admin-ui.js";
import { getUiRuntime } from "./ui-runtime.js";
import { linkedPeerIds, linkRootId, sortByName } from "./ui-utils.js";
import { buildCard } from "./suggestions-ui.js";

export function renderVotes() {
    const list = $("vote-list");
    if (!list) return;
    const prevScroll = list.scrollTop;
    list.innerHTML = "";
    const votesMap = Object.fromEntries(
        state.myVotes.map((v) => [v.suggestionId, v.score]),
    );
    sortByName(state.allSuggestions).forEach((s) => {
        const canEdit = !!state.me?.isAdmin || s.isOwner;
        const lockTitle = state.phase !== "Suggest" && !state.me?.isAdmin;
        const li = buildCard(s, {
            showAuthor: true,
            allowEdit: canEdit,
            allowDelete: !!state.me?.isAdmin,
            lockTitle,
        });
        const hasVote = Object.prototype.hasOwnProperty.call(votesMap, s.id);
        const current = hasVote ? votesMap[s.id] : 5;
        const displayScore = hasVote ? current : "—";
        const displayEmoji = hasVote ? scoreToEmoji(current) : "⚠️";
        const linkedIds = linkedPeerIds(s);
        const rootId = linkRootId(s);
        const footer = document.createElement("div");
        footer.className = "vote-controls";
        footer.innerHTML = `
      <div class="warning-text ${hasVote ? "hidden" : ""}" id="warn-${s.id}">${state.votesFinal ? t("vote.missingFinalWarn") : t("vote.missingWarn")}</div>
      <div class="vote-row">
        <input class="full-slider" type="range" min="0" max="10" value="${current}" data-id="${s.id}" data-root="${rootId}" data-linked="${linkedIds.join(",")}" ${state.votesFinal ? "disabled" : ""}>
        <span class="score" id="score-${s.id}">${displayScore}</span>
        <span class="score-emoji" id="emoji-${s.id}">${displayEmoji}</span>
      </div>`;
        li.querySelector(".card-body").appendChild(footer);
        list.appendChild(li);
    });
    updatePhaseNav();
    updateMissingBadgeFromDom();
    list.scrollTop = prevScroll;
    list.querySelectorAll("input[type=range]").forEach((input) => {
        input.addEventListener("input", (e) => {
            if (state.votesFinal) return;
            const val = Number(e.target.value);
            const id = e.target.dataset.id;
            $("score-" + id).textContent = val;
            const emojiEl = $("emoji-" + id);
            if (emojiEl) emojiEl.textContent = scoreToEmoji(val);
            const warn = $("warn-" + id);
            if (warn) warn.classList.remove("hidden");
            e.target.dataset.pending = "1";
            syncLinkedSliders(e.target, val);
            updateMissingBadgeFromDom();
        });
        input.addEventListener("change", async (e) => {
            if (state.votesFinal) return;
            const suggestionId = Number(e.target.dataset.id);
            const score = Number(e.target.value);
            const prevScore = votesMap[suggestionId];
            const linkedIds = (e.target.dataset.linked || "")
                .split(",")
                .filter(Boolean)
                .map((x) => Number(x));
            const resetUi = () => {
                const label = $("score-" + suggestionId);
                const emoji = $("emoji-" + suggestionId);
                const warn = $("warn-" + suggestionId);
                const fallbackValue = prevScore ?? 5;
                const fallbackDisplay = prevScore ?? "—";
                const fallbackEmoji =
                    prevScore != null ? scoreToEmoji(prevScore) : "⚠️";
                e.target.value = fallbackValue;
                if (label) label.textContent = fallbackDisplay;
                if (emoji) emoji.textContent = fallbackEmoji;
                if (warn) warn.classList.remove("hidden");
            };
            try {
                await api.vote(suggestionId, score);
                toast(t("vote.saved"));
                delete e.target.dataset.pending;
                const warn = $("warn-" + suggestionId);
                if (warn) warn.classList.add("hidden");
                linkedIds.forEach((id) => {
                    const peerWarn = $("warn-" + id);
                    if (peerWarn) peerWarn.classList.add("hidden");
                    const peerSlider = document.querySelector(
                        `input[type=range][data-id="${id}"]`,
                    );
                    if (peerSlider) delete peerSlider.dataset.pending;
                });
                await getUiRuntime().loadVoteData();
                updateMissingBadgeFromDom();
            } catch (err) {
                delete e.target.dataset.pending;
                resetUi();
                toast(err.message, true);
            }
        });
    });
}

export function syncVoteScores() {
    const votesMap = Object.fromEntries(
        state.myVotes.map((v) => [v.suggestionId, v.score]),
    );
    Object.entries(votesMap).forEach(([id, score]) => {
        const slider = document.querySelector(
            `input[type=range][data-id="${id}"]`,
        );
        const scoreLabel = $("score-" + id);
        const emoji = $("emoji-" + id);
        const warn = $("warn-" + id);
        if (slider && score != null) {
            slider.value = score;
            if (scoreLabel) scoreLabel.textContent = score;
            if (emoji) emoji.textContent = scoreToEmoji(score);
            if (warn) warn.classList.add("hidden");
            delete slider.dataset.pending;
        }
    });
    document
        .querySelectorAll("input[type=range][data-id]")
        .forEach((slider) => {
            const id = slider.dataset.id;
            if (Object.prototype.hasOwnProperty.call(votesMap, Number(id)))
                return;
            const scoreLabel = $("score-" + id);
            const emoji = $("emoji-" + id);
            const warn = $("warn-" + id);
            if (scoreLabel) scoreLabel.textContent = "—";
            if (emoji) emoji.textContent = neutralEmoji();
            if (warn) warn.classList.remove("hidden");
        });
}

export function scoreToEmoji(score) {
    if (score == null || Number.isNaN(score)) return neutralEmoji();
    if (score < 1) return "😡";
    if (score <= 3) return "😠";
    if (score <= 6) return "😐";
    if (score <= 8) return "🙂";
    if (score <= 9) return "😃";
    return "🤩";
}

export function neutralEmoji() {
    return "😐";
}

function missingVotesCount() {
    const total = state.allSuggestions?.length ?? 0;
    const votedIds = new Set(state.myVotes?.map((v) => v.suggestionId));
    const missing = total - votedIds.size;
    return missing < 0 ? 0 : missing;
}

function updateMissingBadgeFromDom() {
    const badge = $("vote-missing");
    if (!badge) return;
    if (state.votesFinal || state.phase !== "Vote") {
        badge.classList.add("hidden");
        return;
    }
    const missing = missingVotesCount();
    badge.classList.toggle("hidden", missing === 0);
}

function syncLinkedSliders(sourceEl, value) {
    const linkedAttr = sourceEl?.dataset?.linked;
    if (!linkedAttr) return;
    const ids = linkedAttr.split(",").filter(Boolean);
    ids.forEach((id) => {
        const slider = document.querySelector(
            `input[type=range][data-id="${id}"]`,
        );
        if (!slider || slider === sourceEl) return;
        slider.value = value;
        const scoreLabel = $("score-" + id);
        if (scoreLabel) scoreLabel.textContent = value;
        const emojiEl = $("emoji-" + id);
        if (emojiEl) emojiEl.textContent = scoreToEmoji(Number(value));
        const warn = $("warn-" + id);
        if (warn) warn.classList.remove("hidden");
        slider.dataset.pending = "1";
    });
}

export function updatePhaseNav() {
    const isAdmin = !!state.me?.isAdmin;
    const phase = state.phase;
    const showNav = (id, visible) => {
        const el = $(id);
        if (el) el.classList.toggle("hidden", !visible);
    };

    showNav("nav-suggest", phase === "Suggest");
    showNav("nav-vote", phase === "Vote");
    const jokerBtn = $("open-joker-modal");
    if (jokerBtn) {
        const showJoker = phase === "Vote" && state.hasJoker;
        jokerBtn.classList.toggle("hidden", !showJoker);
        jokerBtn.disabled = !showJoker;
    }

    const finalizeBtn = $("finalize-votes");
    if (finalizeBtn) {
        finalizeBtn.textContent = state.votesFinal
            ? t("vote.unfinalize")
            : t("vote.finalize");
    }

    const voteMissingBadge = $("vote-missing");
    if (voteMissingBadge) {
        const missing = missingVotesCount();
        const showMissing = !state.votesFinal && missing > 0;
        voteMissingBadge.classList.toggle("hidden", !showMissing);
        voteMissingBadge.textContent = t("vote.missingFooter");
    }

    const waitAdmin = $("vote-wait-admin");
    if (waitAdmin) {
        const show = state.votesFinal && phase === "Vote" && !state.resultsOpen;
        waitAdmin.classList.toggle("hidden", !show);
        waitAdmin.textContent = t("vote.waitAdmin");
    }

    const voteStatusText = $("vote-status-text");
    if (voteStatusText) {
        voteStatusText.textContent = state.votesFinal
            ? t("nav.voteFinalized")
            : t("nav.voteHint");
    }

    renderAdminVoteStatus();
    renderAdminLinker();
    updateMissingBadgeFromDom();

    const backButtons = ["nav-vote-prev"];
    backButtons.forEach((id) => {
        const btn = $(id);
        if (btn) btn.classList.toggle("hidden", !isAdmin);
    });

    const suggestNext = $("nav-suggest-next");
    const suggestHint = $("nav-suggest-hint");
    if (suggestNext) {
        const hasSuggestions = (state.mySuggestions?.length ?? 0) > 0;
        const needsSuggestion = phase === "Suggest" && !hasSuggestions;
        suggestNext.classList.toggle("hidden", needsSuggestion);
        suggestNext.textContent = t("nav.next");
        if (suggestHint) {
            suggestHint.classList.toggle("hidden", !needsSuggestion);
            suggestHint.textContent = t("nav.addSuggestionFirst");
        }
    }

    const voteNext = $("nav-vote-next");
    if (voteNext) {
        const locked = !state.resultsOpen && !isAdmin;
        voteNext.disabled = locked;
        voteNext.textContent = locked
            ? t("nav.waitingForResults")
            : t("nav.next");
    }

    const adminResultsToggle = $("results-open");
    if (adminResultsToggle) {
        adminResultsToggle.textContent = state.resultsOpen
            ? t("admin.resultsOpenDisable")
            : t("admin.resultsOpenEnable");
    }
}