/* eslint no-invalid-this: "off" */

import config from './config.js';
import Nightmare from 'nightmare';
import {URL} from 'url';


Nightmare.asyncAction = function(name, func) {
    Nightmare.action(name, function(...args) {
        let done = args[arguments.length - 1];
        func.apply(this, args)
            .then(result => done(null, result))
            .catch(done);
    });
};

Nightmare.asyncAction('clearInput', async function(selector) {
    const backSpaces = [];
    for (let i = 0; i < 50; i += 1)
        backSpaces.push('\u0008');

    await this.wait(selector)
        .type(selector, backSpaces.join(''));
});

let actions = {
    login: function(userName, done) {
        this.goto(`${config.url}auth/?apiKey=salix`)
            .wait(`vn-login input[name=user]`)
            .write(`vn-login input[name=user]`, userName)
            .write(`vn-login input[name=password]`, 'nightmare')
            .click(`vn-login input[type=submit]`)
        // FIXME: Wait for dom to be ready: https://github.com/segmentio/nightmare/issues/481
            .wait(1000)
            .then(done)
            .catch(done);
    },

    changeLanguageToEnglish: function(done) {
        this.wait('#lang')
            .evaluate(selector => {
                return document.querySelector(selector).title;
            }, '#lang')
            .then(title => {
                if (title === 'Change language') {
                    this.then(done)
                        .catch(done);
                } else {
                    this.click('#lang')
                        .click('vn-main-menu [vn-id="langs-menu"] ul > li[name="en"]')
                        .then(done)
                        .catch(done);
                }
            });
    },

    waitForLogin: function(userName, done) {
        this.login(userName)
            .waitForURL('#!/')
            .url()
            .changeLanguageToEnglish()
            .then(done)
            .catch(done);
    },

    selectModule: function(moduleName, done) {
        this.waitToClick(`body > vn-app > vn-vertical > vn-vertical > vn-home > div > div > a[ui-sref="${moduleName}.index"]`)
            .waitForURL(moduleName)
            .then(done)
            .catch(done);
    },

    loginAndModule: function(userName, moduleName, done) {
        this.waitForLogin(userName)
            .selectModule(moduleName)
            .then(done)
            .catch(done);
    },

    parsedUrl: function(done) {
        this.url()
            .then(url => {
                done(null, new URL(url));
            }).catch(done);
    },

    getProperty: function(selector, property, done) {
        this.evaluate_now((selector, property) => {
            return document.querySelector(selector)[property].replace(/\s+/g, ' ').trim();
        }, done, selector, property);
    },

    waitPropertyLength: function(selector, property, minLength, done) {
        this.wait((selector, property, minLength) => {
            const element = document.querySelector(selector);
            return element && element[property] != null && element[property] !== '' && element[property].length >= minLength;
        }, selector, property, minLength)
            .getProperty(selector, property)
            .then(result => done(null, result), done);
    },

    waitToGetProperty: function(selector, property, done) {
        this.wait((selector, property) => {
            const element = document.querySelector(selector);
            return element && element[property] != null && element[property] !== '';
        }, selector, property)
            .getProperty(selector, property)
            .then(result => done(null, result), done);
    },

    write: function(selector, text, done) {
        this.wait(selector)
            .type(selector, text)
            .then(done)
            .catch(done);
    },

    waitToClick: function(selector, done) {
        this.wait(selector)
            .click(selector)
            .then(done)
            .catch(done);
    },

    isVisible: function(selector, done) {
        this.wait(selector)
            .evaluate_now(elementSelector => {
                const selectorMatches = document.querySelectorAll(elementSelector);
                const element = selectorMatches[0];
                if (selectorMatches.length > 1)
                    throw new Error(`multiple matches of ${elementSelector} found`);

                let isVisible = false;
                if (element) {
                    const eventHandler = event => {
                        event.preventDefault();
                        isVisible = true;
                    };
                    element.addEventListener('mouseover', eventHandler);
                    const elementBoundaries = element.getBoundingClientRect();
                    const x = elementBoundaries.left + element.offsetWidth / 2;
                    const y = elementBoundaries.top + element.offsetHeight / 2;
                    const elementInCenter = document.elementFromPoint(x, y);
                    const elementInTopLeft = document.elementFromPoint(elementBoundaries.left, elementBoundaries.top);
                    const elementInBottomRight = document.elementFromPoint(elementBoundaries.right, elementBoundaries.bottom);
                    const e = new MouseEvent('mouseover', {
                        view: window,
                        bubbles: true,
                        cancelable: true,
                    });
                    if (elementInCenter)
                        elementInCenter.dispatchEvent(e);

                    if (elementInTopLeft)
                        elementInTopLeft.dispatchEvent(e);

                    if (elementInBottomRight)
                        elementInBottomRight.dispatchEvent(e);

                    element.removeEventListener('mouseover', eventHandler);
                }
                return isVisible;
            }, done, selector);
    },

    countElement: function(selector, done) {
        this.evaluate_now(selector => {
            return document.querySelectorAll(selector).length;
        }, done, selector);
    },

    waitForNumberOfElements: function(selector, count, done) {
        this.wait((selector, count) => {
            return document.querySelectorAll(selector).length === count;
        }, selector, count)
            .then(done)
            .catch(err => {
                done(new Error(`.waitForNumberOfElements() for ${selector}, count ${count} timed out`));
            });
    },

    waitForClassNotPresent: function(selector, className, done) {
        this.wait(selector)
            .wait((selector, className) => {
                if (!document.querySelector(selector).classList.contains(className))
                    return true;
            }, selector, className)
            .then(done)
            .catch(() => {
                done(new Error(`.waitForClassNotPresent() for ${selector}, class ${className} timed out`));
            });
    },

    waitForClassPresent: function(selector, className, done) {
        this.wait(selector)
            .wait((selector, className) => {
                if (document.querySelector(selector).classList.contains(className))
                    return true;
            }, selector, className)
            .then(done)
            .catch(done);
    },

    waitForTextInElement: function(selector, name, done) {
        this.wait(selector)
            .wait((selector, name) => {
                return document.querySelector(selector).innerText.toLowerCase().includes(name.toLowerCase());
            }, selector, name)
            .then(done)
            .catch(done);
    },

    waitForTextInInput: function(selector, name, done) {
        this.wait(selector)
            .wait((selector, name) => {
                return document.querySelector(selector).value.toLowerCase().includes(name.toLowerCase());
            }, selector, name)
            .then(done)
            .catch(done);
    },

    waitForInnerText: function(selector, done) {
        this.wait(selector)
            .wait(selector => {
                const innerText = document.querySelector(selector).innerText;
                return innerText != null && innerText != '';
            }, selector)
            .evaluate_now(selector => {
                return document.querySelector(selector).innerText;
            }, done, selector);
    },

    waitForEmptyInnerText: function(selector, done) {
        this.wait(selector => {
            return document.querySelector(selector).innerText == '';
        }, selector)
            .then(done)
            .catch(done);
    },

    waitForURL: function(hashURL, done) {
        this.wait(hash => {
            return document.location.hash.includes(hash);
        }, hashURL)
            .then(done)
            .catch(done);
    },

    waitForShapes: function(selector, done) {
        this.wait(selector)
            .evaluate_now(selector => {
                const shapes = document.querySelectorAll(selector);
                const shapesList = [];

                for (const shape of shapes)
                    shapesList.push(shape.innerText);


                return shapesList;
            }, done, selector);
    },

    waitForSnackbar: function(done) {
        this.wait(500).waitForShapes('vn-snackbar .shape .text')
            .then(shapes => {
                done(null, shapes);
            }).catch(done);
    },

    waitForLastShape: function(selector, done) {
        this.wait(selector)
            .evaluate_now(selector => {
                const shape = document.querySelector(selector);

                return shape.innerText;
            }, done, selector);
    },

    waitForLastSnackbar: function(done) {
        this.wait(500).waitForLastShape('vn-snackbar .shape .text')
            .then(shapes => {
                done(null, shapes);
            }).catch(done);
    },

    accessToSearchResult: function(searchValue, done) {
        this.wait(`vn-searchbar input`)
            .type(`vn-searchbar input`, searchValue)
            .click(`vn-searchbar vn-icon[icon="search"]`)
            .evaluate(() => {
                return document.querySelector('ui-view vn-card vn-table') != null;
            })
            .then(result => {
                if (result)
                    return this.waitToClick('ui-view vn-card vn-td');

                return this.waitToClick('ui-view vn-card a');
            })
            .then(done)
            .catch(done);
    },

    accessToSection: function(sectionRoute, done) {
        this.wait(`vn-left-menu`)
            .evaluate(sectionRoute => {
                return document.querySelector(`vn-left-menu ul li ul li > a[ui-sref="${sectionRoute}"]`) != null;
            }, sectionRoute)
            .then(nested => {
                if (!nested)
                    return this.waitToClick(`vn-left-menu li > a[ui-sref="${sectionRoute}"]`);

                return this.waitToClick('vn-left-menu .collapsed')
                    .wait('vn-left-menu .expanded')
                    .waitToClick(`vn-left-menu li > a[ui-sref="${sectionRoute}"]`);
            })
            .then(done)
            .catch(done);
    },

    autocompleteSearch: function(autocompleteSelector, searchValue, done) {
        this.wait(autocompleteSelector)
            .waitToClick(`${autocompleteSelector} input`)
            .type(`${autocompleteSelector} vn-drop-down input`, searchValue)
            .waitToClick(`${autocompleteSelector} li.active`)
            .wait((autocompleteSelector, searchValue) => {
                return document.querySelector(`${autocompleteSelector} input`).value.toLowerCase().includes(searchValue.toLowerCase());
            }, autocompleteSelector, searchValue)
            .then(done)
            .catch(() => {
                done(new Error(`.autocompleteSearch() for ${autocompleteSelector}, timed out`));
            });
    }
};

Object.keys(actions).forEach(function(name) {
    let fn = actions[name];
    Nightmare.action(name, fn);
});