var assert = require("assert"),
    path = require("path"),
    entities = require("../");

describe("Encode->decode test", function() {
    var testcases = [
        {
            input: "asdf & ÿ ü '",
            xml: "asdf & ÿ ü '",
            html: "asdf & ÿ ü '"
        },
        {
            input: "&",
            xml: "&",
            html: "&"
        }
    ];
    testcases.forEach(function(tc) {
        var encodedXML = entities.encodeXML(tc.input);
        it("should XML encode " + tc.input, function() {
            assert.equal(encodedXML, tc.xml);
        });
        it("should default to XML encode " + tc.input, function() {
            assert.equal(entities.encode(tc.input), tc.xml);
        });
        it("should XML decode " + encodedXML, function() {
            assert.equal(entities.decodeXML(encodedXML), tc.input);
        });
        it("should default to XML encode " + encodedXML, function() {
            assert.equal(entities.decode(encodedXML), tc.input);
        });
        it("should default strict to XML encode " + encodedXML, function() {
            assert.equal(entities.decodeStrict(encodedXML), tc.input);
        });

        var encodedHTML5 = entities.encodeHTML5(tc.input);
        it("should HTML5 encode " + tc.input, function() {
            assert.equal(encodedHTML5, tc.html);
        });
        it("should HTML5 decode " + encodedHTML5, function() {
            assert.equal(entities.decodeHTML(encodedHTML5), tc.input);
        });
    });

    it("should encode data URIs (issue 16)", function() {
        var data = "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAALAAABAAEAAAIBRAA7";
        assert.equal(entities.decode(entities.encode(data)), data);
    });
});

describe("Decode test", function() {
    var testcases = [
        { input: "&", output: "&" },
        { input: "&", output: "&" },
        { input: "&", output: "&" },
        { input: "&", output: "&" },
        { input: "&", output: "&" },
        { input: "&", output: "&" },
        { input: "&", output: "&" },
        { input: ":", output: ":" },
        { input: ":", output: ":" },
        { input: ":", output: ":" },
        { input: ":", output: ":" }
    ];
    testcases.forEach(function(tc) {
        it("should XML decode " + tc.input, function() {
            assert.equal(entities.decodeXML(tc.input), tc.output);
        });
        it("should HTML4 decode " + tc.input, function() {
            assert.equal(entities.decodeHTML(tc.input), tc.output);
        });
        it("should HTML5 decode " + tc.input, function() {
            assert.equal(entities.decodeHTML(tc.input), tc.output);
        });
    });
});

var levels = ["xml", "entities"];

describe("Documents", function() {
    levels
        .map(function(n) {
            return path.join("..", "maps", n);
        })
        .map(require)
        .forEach(function(doc, i) {
            describe("Decode", function() {
                it(levels[i], function() {
                    Object.keys(doc).forEach(function(e) {
                        for (var l = i; l < levels.length; l++) {
                            assert.equal(entities.decode("&" + e + ";", l), doc[e]);
                        }
                    });
                });
            });

            describe("Decode strict", function() {
                it(levels[i], function() {
                    Object.keys(doc).forEach(function(e) {
                        for (var l = i; l < levels.length; l++) {
                            assert.equal(entities.decodeStrict("&" + e + ";", l), doc[e]);
                        }
                    });
                });
            });

            describe("Encode", function() {
                it(levels[i], function() {
                    Object.keys(doc).forEach(function(e) {
                        for (var l = i; l < levels.length; l++) {
                            assert.equal(entities.decode(entities.encode(doc[e], l), l), doc[e]);
                        }
                    });
                });
            });
        });

    var legacy = require("../maps/legacy.json");

    describe("Legacy", function() {
        it("should decode", runLegacy);
    });

    function runLegacy() {
        Object.keys(legacy).forEach(function(e) {
            assert.equal(entities.decodeHTML("&" + e), legacy[e]);
        });
    }
});

var astral = {
    "1D306": "\uD834\uDF06",
    "1D11E": "\uD834\uDD1E"
};

var astralSpecial = {
    "80": "\u20AC",
    "110000": "\uFFFD"
};

describe("Astral entities", function() {
    Object.keys(astral).forEach(function(c) {
        it("should decode " + astral[c], function() {
            assert.equal(entities.decode("&#x" + c + ";"), astral[c]);
        });

        it("should encode " + astral[c], function() {
            assert.equal(entities.encode(astral[c]), "&#x" + c + ";");
        });

        it("should escape " + astral[c], function() {
            assert.equal(entities.escape(astral[c]), "&#x" + c + ";");
        });
    });

    Object.keys(astralSpecial).forEach(function(c) {
        it("special should decode \\u" + c, function() {
            assert.equal(entities.decode("&#x" + c + ";"), astralSpecial[c]);
        });
    });
});

describe("Escape", function() {
    it("should always decode ASCII chars", function() {
        for (var i = 0; i < 0x7f; i++) {
            var c = String.fromCharCode(i);
            assert.equal(entities.decodeXML(entities.escape(c)), c);
        }
    });
});