package pages

import (
  "os"
  "strings"

  "gitler.moe/suwako/gitlin/utils"
  "github.com/enescakir/emoji"
  "github.com/gocolly/colly"
  "github.com/gofiber/fiber/v2"
)

type User struct {
  Login         string
  Name          string
  Bio           string
  Status        string
  StatusEmoji   string
  AvatarUrl     string
  Location      string
  Email         string
  Timezone      string
  Following     string
  Followers     string
  Link          string
  Social        []string
  Organizations []string
  OrgMembers    []string
  Company       string
  Type          string
  Contributions string
  Readme        string
  ReadmeUrl     string
  MainRepos     []RepoList
  PinOrPopular  string
}
type RepoList struct {
  Name   string
  Type   string
  Link   string
  Desc   string
  Lang   string
  Stars  string
  Forks  string
  ForkOf string
}

// HandleUser handles the user page.
func HandleUser(c *fiber.Ctx) error {
  // Declare Array used for displaying data
  var userArray []User

  // Scraping
  Scrape := User{}

  UserAgent, ok := os.LookupEnv("GITLIN_USER_AGENT")
  if !ok {
    UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36"
  }
  sc1 := colly.NewCollector(colly.AllowedDomains("github.com"), colly.UserAgent(UserAgent))

  sc1.OnHTML("div[itemscope]", func(e *colly.HTMLElement) {
    Scrape.Type = e.Attr("itemtype")
  })

  sc1.Visit("https://github.com/" + c.Params("user") + "/")
  sc := colly.NewCollector(colly.AllowedDomains("github.com"), colly.UserAgent(UserAgent))
  if Scrape.Type == "http://schema.org/Person" {
    sc.OnHTML("div.js-profile-editable-replace", func(e *colly.HTMLElement) {
      // Main info
      Scrape.Login = e.ChildText("span[itemprop*='additionalName']")
      Scrape.Name = e.ChildText("span[itemprop*='name']")
      Scrape.Bio = e.ChildText("div[data-bio-text] div")
      Scrape.AvatarUrl = e.ChildAttr("img[alt*='Avatar']", "src")
      // Metadata
      Scrape.Location = e.ChildText("li[itemprop*='homeLocation'] span")
      Scrape.Timezone = e.ChildText("li[itemprop*='localTime'] span")
      Scrape.Company = e.ChildText("li[itemprop*='worksFor'] span")
      Scrape.Link = e.ChildText("li[itemprop*='url'] a")
      e.ForEach("li[itemprop*='social']", func(i int, el *colly.HTMLElement) {
        Scrape.Social = append(Scrape.Social, el.ChildAttr("a.Link--primary", "href"))
      })
      // Followers/Following
      Scrape.Followers = e.ChildText("a[href*='https://github.com/" + c.Params("user") + "?tab=followers' i] span")
      Scrape.Following = e.ChildText("a[href*='https://github.com/" + c.Params("user") + "?tab=following' i] span")
      // Organizations
      e.ForEach("a[data-hovercard-type*='organization']", func(i int, el *colly.HTMLElement) {
        Scrape.Organizations = append(Scrape.Organizations, el.Attr("aria-label"))
      })
      // User Status
      Scrape.Status = e.ChildText("div.user-status-circle-badge div.user-status-message-wrapper div")
      Scrape.StatusEmoji = e.ChildAttr("div.user-status-circle-badge div.user-status-emoji-container g-emoji", "alias")
    })
    // Contributions
    sc.OnHTML("div.js-yearly-contributions", func(e *colly.HTMLElement) {
      Scrape.Contributions = e.ChildText("h2")
    })
  } else if Scrape.Type == "http://schema.org/Code" {
    sc.OnHTML("div.container-xl div.flex-md-items-center div.flex-1", func(e *colly.HTMLElement) {
      // Main info
      Scrape.Name = e.ChildText("h1.h2")
      Scrape.Bio = e.ChildText("div.color-fg-muted div")
      // Metadata
      Scrape.Location = e.ChildText("span[itemprop*='location']")
      Scrape.Email = e.ChildText("a[itemprop*='email']")
      Scrape.Link = e.ChildText("a[itemprop*='url']")
      e.ForEach("a.Link--primary", func(i int, el *colly.HTMLElement) {
        Scrape.Social = append(Scrape.Social, el.Attr("href"))
      })
      // Followers
      Scrape.Followers = e.ChildText("a[href*='/orgs/" + c.Params("user") + "/followers' i] span")
    })
    sc.OnHTML("img[alt*='@"+c.Params("user")+"' i]", func(e *colly.HTMLElement) {
      Scrape.AvatarUrl = e.Attr("src")
      Scrape.Login = e.Attr("alt")
    })
    // Org Members
    sc.OnHTML("div.clearfix", func(e *colly.HTMLElement) {
      e.ForEach("a[data-hovercard-type*='user'] img", func(i int, el *colly.HTMLElement) {
        Scrape.OrgMembers = append(Scrape.OrgMembers, strings.TrimPrefix(el.Attr("alt"), "@"))
      })
    })
  } else {
    return c.Status(404).Render("error", fiber.Map{
      "error": "User " + c.Params("user") + " not found",
    })
  }
  sc.OnHTML("div.js-pinned-items-reorder-container", func(e *colly.HTMLElement) {
    e.ForEach("div.pinned-item-list-item-content", func(i int, el *colly.HTMLElement) {
      var MainRepo RepoList
      MainRepo = RepoList{} // Clear data if old data is present
      MainRepo.Name = strings.TrimPrefix(el.ChildAttr("div.width-full a", "href"), "/")
      MainRepo.Link = el.ChildAttr("div.width-full a", "href")
      if strings.Contains(MainRepo.Name, "https://gist.github.com/") {
        MainRepo.Name = el.ChildAttr("div.width-full a span", "title")
        MainRepo.Link = "/gist" + strings.TrimPrefix(el.ChildAttr("div.width-full a", "href"), "https://gist.github.com")
      }
      if strings.Contains(MainRepo.Link, "/gist") {
        MainRepo.Type = "Gist"
      } else {
        MainRepo.Type = "Repository"
      }
      MainRepo.Desc = el.ChildText("p.pinned-item-desc")
      if MainRepo.Type == "Gist" {
        MainRepo.Desc = ""
        el.ForEach("div.rounded-bottom-2 div.flex-items-center", func(in int, ele *colly.HTMLElement) {
          MainRepo.Desc = MainRepo.Desc + "\n" + ele.ChildText("pre")
        })
      }
      MainRepo.Lang = el.ChildText("p.color-fg-muted span[itemprop*='programmingLanguage']")
      MainRepo.Stars = el.ChildText("p.color-fg-muted a[href*='/stargazers' i]")
      MainRepo.Forks = el.ChildText("p.color-fg-muted a[href*='/forks' i]")
      MainRepo.ForkOf = el.ChildText("p.text-small a.Link--muted")
      Scrape.MainRepos = append(Scrape.MainRepos, MainRepo)
    })
    Scrape.PinOrPopular = strings.TrimSuffix(e.ChildText("h2.text-normal"), " repositories")
  })
  sc.OnHTML("article.markdown-body", func(e *colly.HTMLElement) {
    Content, _ := e.DOM.Html()
    Scrape.Readme = strings.Replace(strings.Replace(strings.Replace(strings.Replace(string(utils.UGCPolicy().SanitizeBytes([]byte(Content))), "https://github.com", "", -1), "user-content-", "", -1), "https://camo.githubusercontent.com", "/camo", -1), "https://raw.githubusercontent.com", "/raw", -1)
  })
  sc.OnHTML("div.text-mono", func(e *colly.HTMLElement) {
    Scrape.ReadmeUrl = strings.Replace(e.ChildAttr("a", "href"), "tree", "blob", -1)
  })
  sc.Visit("https://github.com/" + c.Params("user") + "/")
  // Fixing the output a bit
  Scrape.AvatarUrl = strings.TrimPrefix(Scrape.AvatarUrl, "https://avatars.githubusercontent.com/u/")
  Scrape.AvatarUrl = "/avatar/" + Scrape.AvatarUrl // Avatar needs to be in /avatar so its proxied
  if Scrape.StatusEmoji != "" {
    Scrape.StatusEmoji = emoji.Parse(":" + Scrape.StatusEmoji + ":") // Convert the emoji code to an actual emoji
  }
  Scrape.Login = strings.TrimPrefix(Scrape.Login, "@") // Only for orgs
  // Remove HTTP(s) from user website url if it exists
  if strings.HasPrefix(Scrape.Link, "https://") {
    Scrape.Link = strings.TrimPrefix(Scrape.Link, "https://")
  } else if strings.HasPrefix(Scrape.Link, "http://") {
    Scrape.Link = strings.TrimPrefix(Scrape.Link, "http://")
  }

  // Add scrape-based info to userArray
  userArray = append(userArray, Scrape)

  return c.Render("user", fiber.Map{
    "title":  c.Params("user"),
    "branch": utils.Branch,
    "user":   userArray,
  })
}