import { api } from "./api.js";
import { t } from "./i18n.js";
import { state } from "./state.js";
import { $, toast } from "./dom.js";
import { openConfirmModal, renderPhasePill, renderVotes } from "./ui.js";

function bindPhaseAdvanceButtons(runSerializedRefresh) {
    const makeForward = (id, before) => {
        const btn = $(id);
        if (!btn) return;
        btn.addEventListener("click", async () => {
            try {
                if (before) {
                    const proceed = await before();
                    if (!proceed) return;
                }
                const resp = await api.nextPhase();
                state.prevPhase = state.phase;
                state.phase = resp.currentPhase;
                state.resultsOpen = resp.resultsOpen ?? state.resultsOpen;
                state.votesRendered = false;
                renderPhasePill();
                await runSerializedRefresh();
            } catch (err) {
                toast(err.message, true);
            }
        });
    };

    const makeBack = (id) => {
        const btn = $(id);
        if (!btn) return;
        btn.addEventListener("click", async () => {
            try {
                const resp = await api.prevPhase();
                state.prevPhase = state.phase;
                state.phase = resp.currentPhase;
                state.resultsOpen = resp.resultsOpen ?? state.resultsOpen;
                state.votesRendered = false;
                renderPhasePill();
                await runSerializedRefresh();
            } catch (err) {
                toast(err.message, true);
            }
        });
    };

    makeForward("nav-suggest-next", async () => {
        return await new Promise((resolve) => {
            openConfirmModal({
                title: t("nav.freezeModalTitle"),
                body: t("nav.freezeModalBody"),
                confirmLabel: t("nav.next"),
                onConfirm: (close) => {
                    close();
                    resolve(true);
                },
            });
        });
    });
    makeBack("nav-vote-prev");
}

function bindVoteFinalizeButton() {
    const finalizeBtn = $("finalize-votes");
    if (!finalizeBtn) return;

    const finalizeVotes = async (desired) => {
        await api.finalizeVotes(desired);
        state.votesFinal = desired;
        renderPhasePill();
        renderVotes();
        toast(desired ? t("vote.finalize") : t("vote.unfinalize"));
    };

    const missingVotes = () => {
        const votedIds = new Set(
            (state.myVotes ?? []).map((v) => v.suggestionId),
        );
        return (state.allSuggestions ?? []).filter((s) => !votedIds.has(s.id));
    };

    finalizeBtn.addEventListener("click", async () => {
        try {
            const desired = !state.votesFinal;
            if (desired) {
                const missing = missingVotes();
                if (missing.length > 0) {
                    openConfirmModal({
                        title: t("vote.finalizeMissingTitle"),
                        body: t("vote.finalizeMissingBody", {
                            count: missing.length,
                        }),
                        confirmLabel: t("vote.finalizeMissingConfirm"),
                        onConfirm: async (close) => {
                            await finalizeVotes(desired);
                            close();
                        },
                    });
                    return;
                }
            }
            await finalizeVotes(desired);
        } catch (err) {
            toast(err.message, true);
        }
    });
}

export function setupVoteNavigationHandlers({ runSerializedRefresh }) {
    bindPhaseAdvanceButtons(runSerializedRefresh);
    bindVoteFinalizeButton();
}