"use strict";

const {strict: assert} = require("assert");

const {mock_esm, zrequire} = require("../zjsunit/namespace");
const {run_test} = require("../zjsunit/test");
const $ = require("../zjsunit/zjquery");
const {page_params} = require("../zjsunit/zpage_params");

const noop = () => {};

const narrow = mock_esm("../../static/js/narrow");
const narrow_state = mock_esm("../../static/js/narrow_state", {
    filter: () => false,
});
const search_suggestion = mock_esm("../../static/js/search_suggestion");

mock_esm("../../static/js/search_pill_widget", {
    widget: {
        getByElement: () => true,
    },
});
mock_esm("../../static/js/ui_util", {
    change_tab_to: noop,
    place_caret_at_end: noop,
});

const search = zrequire("search");
const search_pill = zrequire("search_pill");
const {Filter} = zrequire("../js/filter");

function test(label, f) {
    run_test(label, ({override}) => {
        page_params.search_pills_enabled = true;
        f({override});
    });
}

test("clear_search_form", () => {
    $("#search_query").val("noise");
    $("#search_query").trigger("focus");
    $(".search_button").prop("disabled", false);

    search.clear_search_form();

    assert.equal($("#search_query").is_focused(), false);
    assert.equal($("#search_query").val(), "");
    assert.equal($(".search_button").prop("disabled"), true);
});

test("update_button_visibility", () => {
    const $search_query = $("#search_query");
    const $search_button = $(".search_button");

    $search_query.is = () => false;
    $search_query.val("");
    narrow_state.active = () => false;
    $search_button.prop("disabled", true);
    search.update_button_visibility();
    assert.ok($search_button.prop("disabled"));

    $search_query.is = () => true;
    $search_query.val("");
    delete narrow_state.active;
    $search_button.prop("disabled", true);
    search.update_button_visibility();
    assert.ok(!$search_button.prop("disabled"));

    $search_query.is = () => false;
    $search_query.val("Test search term");
    delete narrow_state.active;
    $search_button.prop("disabled", true);
    search.update_button_visibility();
    assert.ok(!$search_button.prop("disabled"));

    $search_query.is = () => false;
    $search_query.val("");
    narrow_state.active = () => true;
    $search_button.prop("disabled", true);
    search.update_button_visibility();
    assert.ok(!$search_button.prop("disabled"));
});

test("initialize", () => {
    const $search_query_box = $("#search_query");
    const $searchbox_form = $("#searchbox_form");
    const $search_button = $(".search_button");
    const $searchbox = $("#searchbox");

    $search_query_box[0] = "stub";

    search_pill.get_search_string_for_current_filter = () => "is:starred";

    search_suggestion.max_num_of_search_results = 99;
    $search_query_box.typeahead = (opts) => {
        assert.equal(opts.fixed, true);
        assert.equal(opts.items, 99);
        assert.equal(opts.naturalSearch, true);
        assert.equal(opts.helpOnEmptyStrings, true);
        assert.equal(opts.matcher(), true);
        opts.on_move();

        {
            const search_suggestions = {
                lookup_table: new Map([
                    [
                        "stream:Verona",
                        {
                            description: "Stream <strong>Ver</strong>ona",
                            search_string: "stream:Verona",
                        },
                    ],
                    [
                        "ver",
                        {
                            description: "Search for ver",
                            search_string: "ver",
                        },
                    ],
                ]),
                strings: ["ver", "stream:Verona"],
            };

            /* Test source */
            search_suggestion.get_suggestions = () => search_suggestions;
            const expected_source_value = search_suggestions.strings;
            const source = opts.source("ver");
            assert.equal(source, expected_source_value);

            /* Test highlighter */
            let expected_value = "Search for ver";
            assert.equal(opts.highlighter(source[0]), expected_value);

            expected_value = "Stream <strong>Ver</strong>ona";
            assert.equal(opts.highlighter(source[1]), expected_value);

            /* Test sorter */
            assert.equal(opts.sorter(search_suggestions.strings), search_suggestions.strings);
        }

        {
            let operators;
            let is_blurred;
            let is_append_search_string_called;
            $search_query_box.on(
                "blur",
                /* istanbul ignore next */
                () => {
                    is_blurred = true;
                },
            );
            search_pill.append_search_string = () => {
                is_append_search_string_called = true;
            };
            /* Test updater */
            const _setup = (search_box_val) => {
                is_blurred = false;
                is_append_search_string_called = false;
                $search_query_box.val(search_box_val);
                /* istanbul ignore next */
                Filter.parse = (search_string) => {
                    assert.equal(search_string, search_box_val);
                    return operators;
                };
                /* istanbul ignore next */
                narrow.activate = (raw_operators, options) => {
                    assert.deepEqual(raw_operators, operators);
                    assert.deepEqual(options, {trigger: "search"});
                };
                /* istanbul ignore next */
                search_pill.get_search_string_for_current_filter = () => search_box_val;
            };

            operators = [
                {
                    negated: false,
                    operator: "search",
                    operand: "ver",
                },
            ];
            _setup("ver");

            assert.equal(opts.updater("ver"), "ver");
            assert.ok(!is_blurred);
            assert.ok(is_append_search_string_called);

            operators = [
                {
                    negated: false,
                    operator: "stream",
                    operand: "Verona",
                },
            ];
            _setup("stream:Verona");

            assert.equal(opts.updater("stream:Verona"), "stream:Verona");
            assert.ok(!is_blurred);
            assert.ok(is_append_search_string_called);

            search.__Rewire__("is_using_input_method", true);
            _setup("stream:Verona");

            assert.equal(opts.updater("stream:Verona"), "stream:Verona");
            assert.ok(!is_blurred);
            assert.ok(is_append_search_string_called);

            $search_query_box.off("blur");
        }
    };

    search.initialize();

    const $search_pill_stub = $.create(".pill");
    $search_pill_stub.closest = () => ({data: noop});
    const stub_event = {
        // FIXME: event.relatedTarget should not be a jQuery object
        relatedTarget: $search_pill_stub,
    };
    $search_query_box.val("test string");
    narrow_state.search_string = () => "ver";
    $search_query_box.trigger(new $.Event("blur", stub_event));
    assert.equal($search_query_box.val(), "test string");

    let css_args;
    $searchbox.css = (args) => {
        css_args = args;
    };
    $searchbox.trigger("focusout");
    assert.deepEqual(css_args, {"box-shadow": "unset"});

    search.__Rewire__("is_using_input_method", false);
    $searchbox_form.trigger("compositionend");
    assert.ok(search.is_using_input_method);

    const keydown = $searchbox_form.get_on_handler("keydown");
    let default_prevented = false;
    let ev = {
        type: "keydown",
        key: "a",
        preventDefault() {
            default_prevented = true;
        },
    };
    $search_query_box.is = () => false;
    assert.equal(keydown(ev), undefined);
    assert.ok(!default_prevented);

    ev.key = "Enter";
    assert.equal(keydown(ev), undefined);
    assert.ok(!default_prevented);

    ev.key = "Enter";
    $search_query_box.is = () => true;
    assert.equal(keydown(ev), undefined);
    assert.ok(default_prevented);

    let operators;
    let is_blurred;
    narrow_state.active = () => false;
    $search_query_box.off("blur");
    $search_query_box.on("blur", () => {
        is_blurred = true;
    });

    const _setup = (search_box_val) => {
        is_blurred = false;
        $search_button.prop("disabled", false);
        $search_query_box.val(search_box_val);
        Filter.parse = (search_string) => {
            assert.equal(search_string, search_box_val);
            return operators;
        };
        narrow.activate = (raw_operators, options) => {
            assert.deepEqual(raw_operators, operators);
            assert.deepEqual(options, {trigger: "search"});
        };
        search_pill.get_search_string_for_current_filter = () => search_box_val;
    };

    operators = [
        {
            negated: false,
            operator: "search",
            operand: "",
        },
    ];
    _setup("");

    ev = {
        type: "keyup",
        which: 15,
    };
    /* istanbul ignore next */
    $search_query_box.is = () => false;
    $searchbox_form.trigger(ev);

    assert.ok(!is_blurred);
    assert.ok(!$search_button.prop("disabled"));

    ev.key = "Enter";
    $search_query_box.is = () => false;
    $searchbox_form.trigger(ev);

    assert.ok(!is_blurred);
    assert.ok(!$search_button.prop("disabled"));

    ev.key = "Enter";
    $search_query_box.is = () => true;
    $searchbox_form.trigger(ev);
    assert.ok(is_blurred);

    _setup("ver");
    search.__Rewire__("is_using_input_method", true);
    $searchbox_form.trigger(ev);
    // No change on Enter keyup event when using input tool
    assert.ok(!is_blurred);
    assert.ok(!$search_button.prop("disabled"));

    _setup("ver");
    ev.key = "Enter";
    $search_query_box.is = () => true;
    $searchbox_form.trigger(ev);
    assert.ok(is_blurred);
    assert.ok(!$search_button.prop("disabled"));

    $search_button.prop("disabled", true);
    $search_query_box.trigger("focus");
    assert.ok(!$search_button.prop("disabled"));
});

test("initiate_search", () => {
    // open typeahead and select text when navbar is open
    // this implicitly expects the code to used the chained
    // function calls, which is something to keep in mind if
    // this test ever fails unexpectedly.
    let typeahead_forced_open = false;
    let is_searchbox_text_selected = false;
    let is_searchbox_focused = false;
    $("#search_query").off("focus");
    $("#search_query").on("focus", () => {
        is_searchbox_focused = true;
    });
    $("#search_query").typeahead = (lookup) => {
        if (lookup === "lookup") {
            typeahead_forced_open = true;
        }
        return $("#search_query");
    };
    $("#search_query").on("select", () => {
        is_searchbox_text_selected = true;
    });

    $("#search_query")[0] = "stub";

    const $searchbox = $("#searchbox");
    let css_args;
    $searchbox.css = (args) => {
        css_args = args;
    };

    search.initiate_search();
    assert.ok(typeahead_forced_open);
    assert.ok(is_searchbox_text_selected);
    assert.ok(is_searchbox_focused);
    assert.deepEqual(css_args, {"box-shadow": "inset 0px 0px 0px 2px hsl(204, 20%, 74%)"});
});