"use strict";
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    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
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      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
    return function (mod) {
        if (mod && mod.__esModule) return mod;
        var result = {};
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
const eventUtils = __importStar(require("../../common/event-utils"));
const dom_1 = require("../../common/dom");
const MAX_PAGES = 9;
const MIN_PAGES = 5;
class Pagination {
    handlePageNumberClick(index, originalEvent, el) {
        this.emit("select", {
            el,
            originalEvent,
            value: el.innerText,
            index,
        });
    }
    handleMenuPageNumber({ originalEvent, el, }) {
        var _a;
        const index = parseInt(el === null || el === void 0 ? void 0 : el.getAttribute("data-page-number"), 10);
        this.emit("select", {
            el,
            originalEvent,
            value: (_a = el === null || el === void 0 ? void 0 : el.innerText) !== null && _a !== void 0 ? _a : "",
            index,
        });
        // Have to set timeout becasue menu will also trigger focus back to menu container
        setTimeout(() => this.getEl("pageItem[]", index).focus(), 0);
    }
    handleNextPageClick(originalEvent, el) {
        if (!el.hasAttribute("aria-disabled")) {
            this.emit("next", {
                el,
                originalEvent,
            });
        }
    }
    handlePreviousPageClick(originalEvent, el) {
        if (!el.hasAttribute("aria-disabled")) {
            this.emit("previous", {
                el,
                originalEvent,
            });
        }
    }
    onCreate() {
        this.state = { maxItems: MIN_PAGES };
    }
    onMount() {
        this._calculateMaxItems();
        this.subscribeTo(eventUtils.resizeUtil).on("resize", this._calculateMaxItems.bind(this));
    }
    getItemTag(item) {
        if (item.variant) {
            return item.variant === "link" ? "a" : "button";
        }
        return !!item.href ? "a" : "button";
    }
    /**
     * Calculates the start and end offsets given the current maximum items
     * that can be displayed.
     */
    _getVisibleRange(items) {
        const { state, input } = this;
        const { maxItems } = state;
        const { variant } = input;
        const hasDots = variant === "show-last" || variant === "overflow";
        const hasLeadingDots = variant === "overflow";
        const hasOverflow = variant === "overflow";
        const lastIndex = items.length - 1;
        const dotsIndex = hasDots ? lastIndex : -1;
        const leadingDotsIndex = hasLeadingDots ? 1 : -1;
        let hideDots = false;
        let hideLeadingDots = false;
        const i = items.findIndex((item) => item.current);
        const range = Math.floor(maxItems / 2);
        let start = i - range;
        let end = i + range;
        if (start <= 0) {
            end = maxItems - 1;
            start = 0;
        }
        else if (end >= lastIndex) {
            end = lastIndex;
            start = lastIndex - (maxItems - 1);
        }
        else if (maxItems % 2 === 0) {
            start++;
        }
        if (hasDots) {
            if (i + range >= lastIndex || end >= lastIndex) {
                hideDots = true;
            }
            else if (i <= end - 2) {
                end -= 2;
            }
            else {
                start += 1;
                end -= 1;
            }
        }
        if (hasLeadingDots) {
            if (i - range <= 0) {
                hideLeadingDots = true;
            }
            else if (i >= start - 1) {
                start += 2;
            }
            else {
                end -= 1;
                start -= 1;
            }
        }
        return {
            start,
            end,
            hideDots,
            dotsIndex,
            hasOverflow,
            leadingDotsIndex,
            hideLeadingDots,
        };
    }
    _calculateMaxItems() {
        const { input, state } = this;
        const items = input.item || [];
        if (!items.some((item) => !item.type)) {
            return;
        }
        const root = this.getEl("root");
        if (!this._itemWidth) {
            // calculate the width of the first visible item
            const { children: items } = this.getEl("items");
            for (let i = 0; i < items.length; i++) {
                const item = items[i];
                if (item.offsetWidth) {
                    this._itemWidth = item.offsetWidth;
                    break;
                }
            }
        }
        // subtract 2 from the rounded results to take into account previous/next page buttons
        state.maxItems = Math.max(MIN_PAGES, Math.min(MAX_PAGES, Math.floor((0, dom_1.getMaxWidth)(root) / this._itemWidth) - 2));
    }
}
module.exports = Pagination;
