package github

import (
	"context"
	"encoding/json"
	"net/http"
	"testing"
)

func TestGetAuthenticatedUser_HappyPath(t *testing.T) {
	c := newTestClient(t, func(w http.ResponseWriter, r *http.Request) {
		if r.Method != "GET" {
			t.Errorf("expected GET, got %s", r.Method)
		}
		if r.URL.Path != "/user" {
			t.Errorf("unexpected path: %s", r.URL.Path)
		}
		if r.Header.Get("Authorization") != "Bearer test-token" {
			t.Errorf("unexpected auth header: %s", r.Header.Get("Authorization"))
		}
		json.NewEncoder(w).Encode(map[string]string{"login": "review-bot"})
	})

	login, err := c.GetAuthenticatedUser(context.Background())
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if login != "review-bot" {
		t.Errorf("expected login 'review-bot', got %q", login)
	}
}

func TestGetAuthenticatedUser_401(t *testing.T) {
	c := newTestClient(t, func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(401)
		w.Write([]byte(`{"message":"Bad credentials"}`))
	})

	_, err := c.GetAuthenticatedUser(context.Background())
	if err == nil {
		t.Fatal("expected error for 401")
	}
	if !IsUnauthorized(err) {
		t.Errorf("expected IsUnauthorized=true, got error: %v", err)
	}
}