var _ = require("lodash");
var should = require("should");
var path = require("path");

var Plugin = require("../lib/plugin");
var parsers = require("gitbook-parsers");
var PLUGINS_ROOT = path.resolve(__dirname, "plugins");

describe("Plugins", function () {
    var book;

    before(function() {
        return books.parse("basic")
            .then(function(_book) {
                book = _book;
            });
    });

    describe("Invalid", function() {
        var plugin;

        before(function() {
            plugin = new Plugin(book, "invalid");
            plugin.load("./invalid", PLUGINS_ROOT);
        });

        it("should be detected", function() {
            should(plugin.isValid()).be.exactly(false);
        });
    });

    describe("Empty", function() {
        var plugin;

        before(function() {
            plugin = new Plugin(book, "empty");
            plugin.load("./empty", PLUGINS_ROOT);
        });

        it("should valid a plugin", function() {
            should(plugin.isValid()).be.exactly(true);
        });

        it("should return an empty list of resources", function() {
            return plugin.getResources()
            .then(function(resources) {
                _.each(Plugin.RESOURCES, function(resName) {
                    resources[resName].should.have.lengthOf(0);
                });
            });
        });
    });

    describe("Resources", function() {
        var plugin;

        before(function() {
            plugin = new Plugin(book, "resources");
            plugin.load("./resources", PLUGINS_ROOT);

            return book.plugins.load(plugin);
        });

        it("should valid a plugin", function() {
            should(plugin.isValid()).be.exactly(true);
        });

        describe("Website", function() {
            it("should return a valid list of resources", function() {
                return plugin.getResources("website")
                    .then(function(resources) {
                        resources.js.should.have.lengthOf(1);
                    });
            });

            it("should extend books plugins", function() {
                var resources = book.plugins.resources("website");
                resources.js.should.have.lengthOf(1);
            });
        });

        describe("eBook", function() {
            it("should return a valid list of resources", function() {
                return plugin.getResources("ebook")
                    .then(function(resources) {
                        resources.css.should.have.lengthOf(1);
                    });
            });

            it("should extend books plugins", function() {
                var resources = book.plugins.resources("ebook");

                // There is resources from highlight plugin and this plugin
                resources.css.should.have.lengthOf(2);
                should.exist(_.find(resources.css, {
                    path: "./resources/test"
                }));
            });
        });
    });

    describe("Filters", function() {
        var plugin;

        before(function() {
            plugin = new Plugin(book, "filters");
            plugin.load("./filters", PLUGINS_ROOT);

            return book.plugins.load(plugin);
        });

        it("should valid a plugin", function() {
            should(plugin.isValid()).be.exactly(true);
        });

        it("should return a map of filters", function() {
            var filters = plugin.getFilters();

            _.size(filters).should.equal(2);
            filters.should.have.property("hello");
            filters.should.have.property("helloCtx");
        });

        it("should correctly extend template filters", function() {
            return book.template.renderString("{{ \"World\"|hello }}")
                .then(function(content) {
                    content.should.equal("Hello World");
                });
        });

        it("should correctly set book as context", function() {
            return book.template.renderString("{{ \"root\"|helloCtx }}")
                .then(function(content) {
                    content.should.equal("root:"+book.root);
                });
        });
    });

    describe("Blocks", function() {
        var plugin;

        before(function() {
            plugin = new Plugin(book, "blocks");
            plugin.load("./blocks", PLUGINS_ROOT);

            return book.plugins.load(plugin);
        });

        var testTpl = function(str, args, options) {
            return book.template.renderString(str, args, options)
            .then(book.template.postProcess);
        };

        it("should valid a plugin", function() {
            should(plugin.isValid()).be.exactly(true);
        });

        it("should correctly extend template blocks", function() {
            return testTpl("{% test %}hello{% endtest %}")
                .then(function(content) {
                    content.should.equal("testhellotest");
                });
        });

        it("should correctly accept shortcuts", function() {
           return testTpl("$$hello$$", {}, {
                    type: "markdown"
                })
                .then(function(content) {
                    content.should.equal("testhellotest");
                });
        });

        it("should correctly extend template blocks with defined end", function() {
            return testTpl("{% test2 %}hello{% endtest2end %}")
                .then(function(content) {
                    content.should.equal("test2hellotest2");
                });
        });

        it("should correctly extend template blocks with sub-blocks", function() {
            return testTpl("{% test3join separator=\";\" %}hello{% also %}world{% endtest3join %}")
                .then(function(content) {
                    content.should.equal("hello;world");
                });
        });

        it("should correctly extend template blocks with different sub-blocks", function() {
            return testTpl("{% test4join separator=\";\" %}hello{% also %}the{% finally %}world{% endtest4join %}")
                .then(function(content) {
                    content.should.equal("hello;the;world");
                });
        });

        it("should correctly extend template blocks with arguments", function() {
            return testTpl("{% test5args 'a', 'b', 'c' %}{% endtest5args %}")
                .then(function(content) {
                    content.should.equal("test5a,b,ctest5");
                });
        });

        it("should correctly extend template blocks with args and kwargs", function() {
            return testTpl("{% test5kwargs 'a', 'b', 'c', d='test', e='test2' %}{% endtest5kwargs %}")
                .then(function(content) {
                    content.should.equal("test5a,b,c,d:test,e:test2,__keywords:truetest5");
                });
        });

        it("should correctly extend template blocks with access to context", function() {
           return testTpl("{% set name = 'john' %}{% test6context %}{% endtest6context %}", {})
                .then(function(content) {
                    content.should.equal("test6johntest6");
                });
        });
    });

    describe("Blocks without parsing", function() {
        var plugin;

        before(function() {
            plugin = new Plugin(book, "blocks");
            plugin.load("./blocks", PLUGINS_ROOT);

            return book.plugins.load(plugin);
        });

        var testTpl = function(markup, str, args, options) {
            var filetype = parsers.get(markup);

            return book.template.renderString(str, args, options)
            .then(filetype.page).get("sections").get(0).get("content")
            .then(book.template.postProcess);
        };

        it("should correctly process unparsable for markdown", function() {
            return testTpl(".md", "{% test %}**hello**{% endtest %}")
                .then(function(content) {
                    content.should.equal("<p>test**hello**test</p>\n");
                });
        });

        it("should correctly process unparsable for asciidoc", function() {
            return testTpl(".adoc", "{% test %}**hello**{% endtest %}")
                .then(function(content) {
                    content.should.equal("<div class=\"paragraph\">\n<p>test**hello**test</p>\n</div>");
                });
        });
    });
});