package pages

import (
  "log"
  "net/http"
  "os"
  "strings"
  "time"

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

type (
  BranchCat struct {
    Id, Name string
    Branch []Branch
  }
  CommitDiff struct {
    Count, Width string
  }
  Branch struct {
    Name, LastCommit, Username, Issue, Status, Activity, Compare string
    CommitsAhead, CommitsBehind CommitDiff
  }
)

func HandleBranches (c *fiber.Ctx) error {
  var branchesArray []BranchCat
  cat := "/all"
  if c.Params("cat") != "" {
    cat = "/" + c.Params("cat")
  }

  Scrape := BranchCat{}

  repoUrl := strings.TrimSuffix(c.Params("repo"), ".git")
  resp, err := http.Get("https://github.com/" + c.Params("user") + "/" + repoUrl + "/branches" + cat)
  if err != nil {
    log.Println(err)
  }
  if resp.StatusCode == 404 {
    return c.Status(404).Render("error", fiber.Map {
      "title": "Error",
      "ver": utils.Ver,
      "ves": utils.Ves,
      "error": "Repository " + c.Params("user") + "/" + repoUrl + "/branches" + cat + "not found",
    })
  }

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

  sc := colly.NewCollector(colly.AllowedDomains("github.com"), colly.UserAgent(ua))
  sc.Limit(&colly.LimitRule {
    DomainGlob: "github.githubassets.com/*",
    Delay: 30 * time.Second,
    RandomDelay: 30 * time.Second,
  })
  sc.OnRequest(func(r *colly.Request) {
    r.Headers.Set("Cache-Control", "no-cache, no-store, must-revalidate")
    r.Headers.Set("Pragma", "no-cache")
    r.Headers.Set("Expires", "0")
  })

  sc.OnHTML(`div[data-target="branch-filter.result"]`, func (e *colly.HTMLElement) {
    var branchArray []Branch
    e.ForEach("div.Box--condensed", func (i int, el *colly.HTMLElement) {
      Scrape.Name = el.ChildText("div.Box-header .Box-title")
      Scrape.Id = strings.ToLower(strings.TrimSuffix(Scrape.Name, " "))
      var name, lcom, uname, issue, status, activity, compare string
      var cahead, cbehind CommitDiff
      el.ForEach("ul li.position-relative branch-filter-item.Details", func (ij int, elc *colly.HTMLElement) {
        name = elc.ChildText("div.col-12 a.branch-name")
        tdate := elc.ChildText("div.col-12 span.css-truncate-target relative-time")
        td, e := time.Parse("Jan 2, 2006 16:09", tdate)
        if e != nil {
          log.Println(e)
        }
        lcom = td.Format("2006年01月02日 16:09")
        uname = elc.ChildText("div.col-12 span.css-truncate-target a.Link--muted")
        elc.ForEach("div.col-md-6 div.col-md-12 div div div.count-half", func (ijk int, elcb *colly.HTMLElement) {
          cbehind.Count = elcb.ChildText("count-behind")
          cbehind.Width = strings.ReplaceAll(elcb.ChildAttr("div.bar-behind", "style"), "width:", "")
          cahead.Count = elcb.ChildText("count-after")
          cahead.Width = strings.ReplaceAll(elcb.ChildAttr("div.bar-after", "style"), "width:", "")
        })
        issue = strings.TrimPrefix(elc.ChildText(`div.col-md-6 div.Details-content--shown div.text-right a[data-hovercard-type="pull_request"]`), "#")
        status = strings.TrimPrefix(elc.ChildAttr("div.col-md-6 div.Details-content--shown div.text-right span.State", "title"), "Status: ")
        activity = elc.ChildAttr("div.col-md-6 div.Details-content--shown a.tooltipped", "href")
        compare = elc.ChildAttr("div.col-md-6 div.Details-content--shown a.test-compare-link", "href")
      })

      branchArray = append(branchArray, Branch {
        Name: name,
        LastCommit: lcom,
        Username: uname,
        CommitsAhead: cahead,
        CommitsBehind: cbehind,
        Issue: issue,
        Status: status,
        Activity: activity,
        Compare: compare,
      })
    })
    Scrape.Branch = branchArray
    branchesArray = append(branchesArray, Scrape)
  })

  sc.Visit("https://github.com/" + c.Params("user") + "/" + repoUrl + "/branches" + cat)

  return c.Render("branches", fiber.Map {
    "title": c.Params("user") + "/" + repoUrl + "/branches" + cat,
    "username": c.Params("user"),
    "reponame": repoUrl,
    "ver": utils.Ver,
    "ves": utils.Ves,
    "branches": branchesArray,
  })

  return nil
}