"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const immutable_1 = __importDefault(require("immutable"));
const encodeNavigation_1 = __importDefault(require("./encodeNavigation"));
/**
 page.progress is a deprecated property from GitBook v2
 */
function encodeProgress(output, page) {
    const current = page.getPath();
    const navigation = immutable_1.default.Map((0, encodeNavigation_1.default)(output));
    const n = navigation.size;
    let percent = 0, prevPercent = 0, currentChapter = null;
    let done = true;
    const chapters = navigation
        .map((nav, chapterPath) => {
        nav.path = chapterPath;
        return nav;
    })
        .valueSeq()
        .sortBy((nav) => {
        return nav.index;
    })
        .map((nav, i) => {
        // Calcul percent
        nav.percent = (i * 100) / Math.max(n - 1, 1);
        // Is it done
        nav.done = done;
        if (nav.path == current) {
            currentChapter = nav;
            percent = nav.percent;
            done = false;
        }
        else if (done) {
            prevPercent = nav.percent;
        }
        return nav;
    })
        .toJS();
    return {
        // Previous percent
        prevPercent: prevPercent,
        // Current percent
        percent: percent,
        // List of chapter with progress
        chapters: chapters,
        // Current chapter
        current: currentChapter
    };
}
exports.default = encodeProgress;