package e2e

import (
	"net/http"
	"os/exec"
	"strings"
	"testing"
)

// Appendix C lists a url for one release, and a url the book prints must not answer 404.
func TestOneReleaseOpensTheListAtThatTag(t *testing.T) {
	if _, err := exec.LookPath("git"); err != nil {
		t.Skip("git is not installed")
	}
	in := newInstance(t)
	john := in.account("john")
	work := seed(t, in, john, "john", "johnbot")
	run(t, work, "git", "tag", "-a", "v1.2.0", "-m", "fixes the empty config panic")
	run(t, work, "git", "push", "-q", in.url(john, "/john/johnbot"), "v1.2.0")

	client := &http.Client{CheckRedirect: func(*http.Request, []*http.Request) error {
		return http.ErrUseLastResponse
	}}
	resp, err := client.Get(in.http.URL + "/john/johnbot/release/v1.2.0")
	if err != nil {
		t.Fatal(err)
	}
	resp.Body.Close()
	if resp.StatusCode != http.StatusFound {
		t.Fatalf("the release url answered %d", resp.StatusCode)
	}
	if got := resp.Header.Get("Location"); got != "/john/johnbot/releases?from=v1.2.0" {
		t.Errorf("it went to %q", got)
	}

	code, _, body := get(t, in.http.URL+"/john/johnbot/releases?from=v1.2.0")
	if code != http.StatusOK || !strings.Contains(body, "v1.2.0") {
		t.Errorf("the list does not show the tag it was opened at: %d\n%s", code, body)
	}

	// A tag that is not here is a 404, not the newest release wearing the wrong name.
	resp, err = client.Get(in.http.URL + "/john/johnbot/release/v9.9.9")
	if err != nil {
		t.Fatal(err)
	}
	resp.Body.Close()
	if resp.StatusCode != http.StatusNotFound {
		t.Errorf("an unknown tag answered %d", resp.StatusCode)
	}
}