package e2e

import (
	"net/url"
	"strings"
	"testing"

	"github.com/PuerkitoBio/goquery"
)

// fileeditCommitItem returns the commit log row with the given subject, or nil.
func fileeditCommitItem(r *response, subject string) *goquery.Selection {
	var found *goquery.Selection
	r.Find(".commit-item").EachWithBreak(func(_ int, s *goquery.Selection) bool {
		if strings.TrimSpace(s.Find(".commit-subject").First().Text()) == subject {
			found = s
			return false
		}
		return true
	})
	return found
}

func TestFileEditing(t *testing.T) {
	e := newEnv(t)
	admin := e.admin()

	// A dedicated repo so edits do not interfere with other tests.
	e.createRepo(admin, "edit-repo")
	e.seedRepo("edit-repo", nil)

	t.Run("Edit button appears on text file blob when viewing a branch as admin", func(t *testing.T) {
		r := admin.get("/edit-repo/blob/main/index.js").mustStatus(200)
		sel := `a[href*="/edit/main/index.js"]`
		if r.Count(sel) == 0 {
			t.Fatal("Edit link missing")
		}
		if got := r.Text(sel); got != "Edit" {
			t.Errorf("link text = %q", got)
		}
	})

	t.Run("Edit button does not appear when viewing a commit SHA", func(t *testing.T) {
		sha := e.headCommit("edit-repo")
		if n := admin.get("/edit-repo/blob/" + sha + "/index.js").Count(`a[href*="/edit/"]`); n != 0 {
			t.Errorf("Edit links = %d", n)
		}
	})

	t.Run("Edit button does not appear for unauthenticated visitors", func(t *testing.T) {
		if n := e.anon().get("/edit-repo/blob/main/index.js").Count(`a[href*="/edit/main/"]`); n != 0 {
			t.Errorf("Edit links = %d", n)
		}
	})

	t.Run("edit page loads with file content pre-filled", func(t *testing.T) {
		r := admin.get("/edit-repo/edit/main/index.js").mustStatus(200)
		if got := r.Text(".file-blob-name"); got != "index.js" {
			t.Errorf("file name = %q", got)
		}
		if got := r.Value("textarea[name=content]"); !strings.Contains(got, "hello") {
			t.Errorf("content = %q", got)
		}
		if got := r.Value("textarea[name=message]"); got != "Edited index.js" {
			t.Errorf("message = %q", got)
		}
	})

	t.Run("edit page shows which branch will be committed to", func(t *testing.T) {
		if !admin.get("/edit-repo/edit/main/index.js").Contains("main") {
			t.Error("branch name missing")
		}
	})

	t.Run("edit page returns 404 for non-branch ref", func(t *testing.T) {
		sha := e.headCommit("edit-repo")
		admin.get("/edit-repo/edit/" + sha + "/index.js").mustStatus(404)
	})

	t.Run("submitting edit creates a new commit and redirects to blob view", func(t *testing.T) {
		r := admin.post("/edit-repo/edit/main/index.js", url.Values{
			"content":  {"console.log(\"edited\");\n"},
			"new_path": {"index.js"},
			"message":  {"Update index.js via web editor"},
		})
		r.mustRedirect("/edit-repo/commit/")
		if !admin.follow(r).Contains("Update index.js via web editor") {
			t.Error("commit view does not show the message")
		}
	})

	t.Run("edit commit has a gpgsig header (is signed)", func(t *testing.T) {
		dir := e.repoPath("edit-repo")
		hash := gitRun(t, dir, "log", "--format=%H", "--grep=Update index.js via web editor", "-1")
		if hash == "" {
			t.Fatal("edit commit not found")
		}
		if obj := gitRun(t, dir, "cat-file", "-p", hash); !strings.Contains(obj, "gpgsig") {
			t.Errorf("commit object has no gpgsig:\n%s", obj)
		}
	})

	t.Run("edit commit shows verified badge in commit log", func(t *testing.T) {
		r := admin.get("/edit-repo/commits/main").mustStatus(200)
		item := fileeditCommitItem(r, "Update index.js via web editor")
		if item == nil {
			t.Fatal("commit row missing")
		}
		if item.Find(".sig-badge.verified").Length() == 0 {
			t.Error("verified badge missing")
		}
	})

	t.Run("GET edit page returns 404 for non-branch ref", func(t *testing.T) {
		sha := e.headCommit("edit-repo")
		admin.get("/edit-repo/edit/" + sha + "/index.js").mustStatus(404)
	})
}