package httpx_test

import (
	"errors"
	"testing"

	"git.codelab.vc/pkg/httpx"
)

func TestError(t *testing.T) {
	t.Run("formats without endpoint", func(t *testing.T) {
		inner := errors.New("connection refused")
		e := &httpx.Error{
			Op:  "Get",
			URL: "http://example.com/api",
			Err: inner,
		}

		want := "httpx: Get http://example.com/api: connection refused"
		if got := e.Error(); got != want {
			t.Errorf("got %q, want %q", got, want)
		}
	})

	t.Run("formats with endpoint different from url", func(t *testing.T) {
		inner := errors.New("timeout")
		e := &httpx.Error{
			Op:       "Do",
			URL:      "http://example.com/api",
			Endpoint: "http://node1.example.com/api",
			Err:      inner,
		}

		want := "httpx: Do http://example.com/api (endpoint http://node1.example.com/api): timeout"
		if got := e.Error(); got != want {
			t.Errorf("got %q, want %q", got, want)
		}
	})

	t.Run("formats with endpoint same as url", func(t *testing.T) {
		inner := errors.New("not found")
		e := &httpx.Error{
			Op:       "Get",
			URL:      "http://example.com/api",
			Endpoint: "http://example.com/api",
			Err:      inner,
		}

		want := "httpx: Get http://example.com/api: not found"
		if got := e.Error(); got != want {
			t.Errorf("got %q, want %q", got, want)
		}
	})

	t.Run("unwrap returns inner error", func(t *testing.T) {
		inner := errors.New("underlying")
		e := &httpx.Error{Op: "Get", URL: "http://example.com", Err: inner}

		if got := e.Unwrap(); got != inner {
			t.Errorf("Unwrap() = %v, want %v", got, inner)
		}

		if !errors.Is(e, inner) {
			t.Error("errors.Is should find the inner error")
		}
	})
}

func TestSentinelErrors(t *testing.T) {
	t.Run("ErrRetryExhausted", func(t *testing.T) {
		if httpx.ErrRetryExhausted == nil {
			t.Fatal("ErrRetryExhausted is nil")
		}
		if httpx.ErrRetryExhausted.Error() == "" {
			t.Fatal("ErrRetryExhausted has empty message")
		}
	})

	t.Run("ErrCircuitOpen", func(t *testing.T) {
		if httpx.ErrCircuitOpen == nil {
			t.Fatal("ErrCircuitOpen is nil")
		}
	})

	t.Run("ErrNoHealthy", func(t *testing.T) {
		if httpx.ErrNoHealthy == nil {
			t.Fatal("ErrNoHealthy is nil")
		}
	})
}