package tea

import (
	"os"
	"path/filepath"
	"testing"
)

func writeConfig(t *testing.T, content string) string {
	t.Helper()
	path := filepath.Join(t.TempDir(), "config.yml")
	if err := os.WriteFile(path, []byte(content), 0o600); err != nil {
		t.Fatalf("写 tea config 失败: %v", err)
	}
	return path
}

const sampleConfig = `logins:
- name: local
  url: http://localhost:3000
  token: tok-local
  default: true
- name: work
  url: https://Gitea.Example.com/
  token: tok-work
`

func TestLoginForHostMatchesByHostname(t *testing.T) {
	path := writeConfig(t, sampleConfig)
	cases := map[string]string{
		"gitea.example.com": "tok-work",
		"GITEA.example.com": "tok-work",
		"localhost":         "tok-local",
	}
	for host, wantToken := range cases {
		l, err := LoginForHost(path, host)
		if err != nil {
			t.Fatalf("LoginForHost(%s) 出错: %v", host, err)
		}
		if l == nil || l.Token != wantToken {
			t.Fatalf("LoginForHost(%s) = %+v, want token %s", host, l, wantToken)
		}
	}
}

func TestLoginForHostIgnoresDefaultLoginOfOtherHost(t *testing.T) {
	path := writeConfig(t, sampleConfig)
	l, err := LoginForHost(path, "git.other.org")
	if err != nil {
		t.Fatalf("没匹配上不应报错: %v", err)
	}
	if l != nil {
		t.Fatalf("host 不匹配时不应回退到默认 login，得到 %+v", l)
	}
}

func TestLoginForHostMissingConfigIsNotAnError(t *testing.T) {
	l, err := LoginForHost(filepath.Join(t.TempDir(), "absent.yml"), "gitea.example.com")
	if err != nil || l != nil {
		t.Fatalf("没有 tea config 时应返回 (nil, nil)，得到 (%+v, %v)", l, err)
	}
}

func TestLoginForHostBadYAMLIsAnError(t *testing.T) {
	path := writeConfig(t, "logins: [this is: not valid")
	if _, err := LoginForHost(path, "gitea.example.com"); err == nil {
		t.Fatal("tea config 解析失败应当报错")
	}
}

func TestLoginForHostPrefersDefaultAmongSameHost(t *testing.T) {
	path := writeConfig(t, `logins:
- name: bot
  url: https://gitea.example.com
  token: tok-bot
- name: me
  url: https://gitea.example.com/
  token: tok-me
  default: true
`)
	l, err := LoginForHost(path, "gitea.example.com")
	if err != nil {
		t.Fatalf("LoginForHost 出错: %v", err)
	}
	if l == nil || l.Name != "me" {
		t.Fatalf("同一 host 有多条 login 时应取 default 那条，得到 %+v", l)
	}
}