package nvidia

import (
	"bytes"
	"context"
	"io"
	"net/http"
	"strings"
	"testing"

	"github.com/hireme/hireme/internal/crawler/crawlertest"
)

type roundTripFunc func(req *http.Request) *http.Response

func (f roundTripFunc) RoundTrip(req *http.Request) (*http.Response, error) {
	return f(req), nil
}

func TestNvidiaCrawler_DiscoverAndFetch(t *testing.T) {
	mockClient := &http.Client{
		Transport: roundTripFunc(func(r *http.Request) *http.Response {
			if strings.Contains(r.URL.Path, "/job/JR1982000") {
				body := `{
					"jobPostingInfo": {
						"id": "JR1982000",
						"title": "Senior Systems Software Engineer - GPU Infrastructure",
						"jobDescription": "<p>NVIDIA is seeking senior systems software engineers to accelerate AI data centers.</p>",
						"location": "Redmond, WA",
						"additionalLocations": ["Seattle, WA"]
					}
				}`
				return &http.Response{
					StatusCode: http.StatusOK,
					Body:       io.NopCloser(bytes.NewBufferString(body)),
					Header:     make(http.Header),
				}
			}

			if strings.HasSuffix(r.URL.Path, "/jobs") {
				body := `{
					"total": 1,
					"jobPostings": [
						{
							"title": "Senior Systems Software Engineer - GPU Infrastructure",
							"externalPath": "/job/JR1982000",
							"locationsText": "Redmond, WA",
							"jobPostingId": "JR1982000"
						}
					]
				}`
				return &http.Response{
					StatusCode: http.StatusOK,
					Body:       io.NopCloser(bytes.NewBufferString(body)),
					Header:     make(http.Header),
				}
			}

			return &http.Response{
				StatusCode: http.StatusNotFound,
				Body:       io.NopCloser(bytes.NewBufferString("not found")),
				Header:     make(http.Header),
			}
		}),
	}

	c := NewNvidiaCrawlerWithClient(mockClient)
	if !c.CanHandle("nvidia") {
		t.Errorf("CanHandle should support nvidia")
	}

	discovered, err := c.DiscoverJobs(context.Background(), "https://nvidia.wd5.myworkdayjobs.com/NVIDIAExternalCareerSite?q=Software+Engineer")
	if err != nil {
		t.Fatalf("DiscoverJobs failed: %v", err)
	}

	if len(discovered) != 1 {
		t.Fatalf("expected 1 discovered job, got %d", len(discovered))
	}

	if discovered[0].CanonicalID != "nvidia:JR1982000" {
		t.Errorf("unexpected canonical ID: %s", discovered[0].CanonicalID)
	}

	extracted, err := c.FetchJobDetail(context.Background(), "https://nvidia.wd5.myworkdayjobs.com/en-US/NVIDIAExternalCareerSite/job/JR1982000")
	if err != nil {
		t.Fatalf("FetchJobDetail failed: %v", err)
	}

	if extracted.Title != "Senior Systems Software Engineer - GPU Infrastructure" {
		t.Errorf("unexpected title: %s", extracted.Title)
	}
	if extracted.Company != "NVIDIA" {
		t.Errorf("unexpected company: %s", extracted.Company)
	}
	if extracted.Location != "Redmond, WA; Seattle, WA" {
		t.Errorf("unexpected location: %s", extracted.Location)
	}
}

func TestNvidiaCrawler_LiveIntegration(t *testing.T) {
	crawlertest.RunLiveIntegration(t, crawlertest.LiveTestConfig{
		PlatformName:            "NVIDIA",
		Crawler:                 NewNvidiaCrawler(),
		TargetURL:               "https://nvidia.wd5.myworkdayjobs.com/NVIDIAExternalCareerSite?q=Software+Engineer",
		ExpectedCanonicalPrefix: "nvidia:",
		ExpectedCompany:         "NVIDIA",
	})
}