package llamaswap

import (
	"context"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
)

func TestHealth(t *testing.T) {
	var gotPath, gotAuth string
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotPath = r.URL.Path
		gotAuth = r.Header.Get("Authorization")
		_, _ = w.Write([]byte("OK"))
	}))
	defer srv.Close()

	p := New(WithBaseURL(srv.URL), WithToken("tok"), WithHTTPClient(srv.Client()))
	if err := p.Health(context.Background()); err != nil {
		t.Fatalf("Health: %v", err)
	}
	if gotPath != "/health" || gotAuth != "Bearer tok" {
		t.Errorf("path/auth = %q/%q", gotPath, gotAuth)
	}
}

func TestHealthUnhealthyStatus(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusBadGateway)
	}))
	defer srv.Close()

	p := New(WithBaseURL(srv.URL), WithHTTPClient(srv.Client()))
	err := p.Health(context.Background())
	if err == nil || !strings.Contains(err.Error(), "502") {
		t.Errorf("err = %v, want status-502 error", err)
	}
}

func TestHealthUnreachable(t *testing.T) {
	// A closed server: transport error, not an HTTP status.
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {}))
	url := srv.URL
	srv.Close()

	p := New(WithBaseURL(url))
	if err := p.Health(context.Background()); err == nil {
		t.Error("want error for unreachable host")
	}
}

func TestHealthNoBaseURL(t *testing.T) {
	p := New()
	if err := p.Health(context.Background()); err == nil {
		t.Error("want error without base URL")
	}
}