package sharelatex

import (
	"fmt"
	"math/rand"
	"net/http"
	"os"
	"path/filepath"
	"time"

	"github.com/tebeka/selenium"
)

type driver struct {
	wd      selenium.WebDriver
	retries uint
}

func (d driver) FindXpath(selector string) selenium.WebElement {
	return d.Find(selenium.ByXPATH, selector)
}

func (d driver) FindByCSS(selector string) selenium.WebElement {
	return d.Find(selenium.ByCSSSelector, selector)
}

func (d driver) FindByName(selector string) selenium.WebElement {
	return d.Find(selenium.ByName, selector)
}

func (d driver) FindByText(selector string) selenium.WebElement {
	return d.Find(selenium.ByLinkText, selector)
}

func (d driver) Find(by, selector string) selenium.WebElement {
	for i := uint(0); i < d.retries; i++ {
		e, err := d.wd.FindElement(by, selector)
		if err == nil {
			return e
		}
		time.Sleep(time.Millisecond * 100)
	}
	fmt.Fprintf(os.Stderr, "elemenet %s not found (%s)", selector, by)
	os.Exit(1)
	return nil
}

func IntegrationTest(url string) error {
	_, err := http.Get(url)
	if err != nil {
		fmt.Printf("failed to get '%s': %s", url, err)
	}
	caps := selenium.Capabilities{"browserName": "firefox"}
	wd, err := selenium.NewRemote(caps, "")
	if err != nil {
		return err
	}
	defer wd.Quit()
	d := driver{wd, 100}

	// Get simple playground interface
	fmt.Fprintf(os.Stderr, "visit url %s\n", url)
	wd.Get(url)

	e := d.FindXpath("//input[@type='email']")
	e.Clear()
	e.SendKeys("user1@higgsboson.tk")

	e = d.FindXpath("//input[@type='password']")
	e.Clear()
	e.SendKeys("password")

	e = d.FindXpath("//button[@type='submit']")
	e.Click()

	d.FindByText("Account")

	e = d.FindByText("New Project")
	e.Click()

	e = d.FindByText("Blank Project")
	e.Click()

	e = d.FindXpath("//input[@type='text']")
	e.Clear()
	e.SendKeys(fmt.Sprintf("p %d", rand.Int63()))

	e = d.FindByCSS("button.btn-primary") // Create
	e.Click()

	e = d.FindXpath("//a[@ng-controller='ShareController']") // Share
	e.Click()

	e = d.FindByCSS("button.btn-primary") // Close
	e.Click()

	e = d.FindByCSS(`i.fa-comment`)
	e.Click()

	e = d.FindByCSS(`div.new-message textarea`)
	e.SendKeys("hello world" + selenium.EnterKey)

	e = d.FindByCSS("i.fa.fa-upload") // Upload
	e.Click()

	e = d.FindByName("file") // Create
	dir, err := filepath.Abs(filepath.Dir(os.Args[0]))
	e.SendKeys(filepath.Join(dir, "./tech-support.jpg"))

	e = d.FindByCSS("textarea") // Latex Doc
	e.Clear()
	e.SendKeys(`\documentclass{article} \begin{document} ello \end{document}`)

	time.Sleep(time.Millisecond * 1000)
	return nil
}