package openplatform

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

func TestDocsRoutesServeOpenAPIAndBothDocumentationViews(t *testing.T) {
	handler := WithDocs(http.NotFoundHandler())
	tests := []struct {
		path        string
		contentType string
		want        string
	}{
		{OpenAPISpecPath, "application/yaml", "openapi: 3.0.3"},
		{SwaggerUIPath, "text/html", "swagger-ui-bundle.js"},
		{SimpleDocsPath, "text/html", "车辆数据开放平台"},
		{swaggerInitJSPath, "application/javascript", `persistAuthorization: false`},
	}
	for _, test := range tests {
		t.Run(test.path, func(t *testing.T) {
			recorder := httptest.NewRecorder()
			handler.ServeHTTP(recorder, httptest.NewRequest(http.MethodGet, test.path, nil))
			if recorder.Code != http.StatusOK {
				t.Fatalf("status=%d body=%s", recorder.Code, recorder.Body.String())
			}
			if !strings.HasPrefix(recorder.Header().Get("Content-Type"), test.contentType) {
				t.Fatalf("content-type=%q", recorder.Header().Get("Content-Type"))
			}
			if !strings.Contains(recorder.Body.String(), test.want) {
				t.Fatalf("body does not contain %q", test.want)
			}
			if recorder.Header().Get("X-Content-Type-Options") != "nosniff" {
				t.Fatal("documentation asset must set nosniff")
			}
			if test.path == SimpleDocsPath && !strings.Contains(recorder.Header().Get("Content-Security-Policy"), "script-src 'unsafe-inline'") {
				t.Fatal("simple documentation must allow its bundled interactive field renderer")
			}
		})
	}
}

func TestDocsRedirectsAndRejectsMutatingMethods(t *testing.T) {
	handler := WithDocs(http.NotFoundHandler())
	redirect := httptest.NewRecorder()
	handler.ServeHTTP(redirect, httptest.NewRequest(http.MethodGet, "/open-api/docs", nil))
	if redirect.Code != http.StatusPermanentRedirect || redirect.Header().Get("Location") != SimpleDocsPath {
		t.Fatalf("status=%d location=%q", redirect.Code, redirect.Header().Get("Location"))
	}

	post := httptest.NewRecorder()
	handler.ServeHTTP(post, httptest.NewRequest(http.MethodPost, OpenAPISpecPath, nil))
	if post.Code != http.StatusMethodNotAllowed || post.Header().Get("Allow") != "GET, HEAD" {
		t.Fatalf("status=%d allow=%q", post.Code, post.Header().Get("Allow"))
	}
}

func TestOpenAPISpecCoversPublicAndManagementEndpoints(t *testing.T) {
	spec := string(openAPISpec)
	for _, want := range []string{
		"openapi: 3.0.3",
		HydrogenQueryPath + ":",
		MileageQueryPath + ":",
		MileageRangeQueryPath + ":",
		StationaryVehicleQueryPath + ":",
		"/api/v2/open-platform/apps:",
		"AppKeyAuth:",
		"AdminBearer:",
		"省略或传空数组时",
		"protocolPriority:",
		"sourceProtocol:",
		StationaryVehicleQueryPath,
		"enum: [GB32960, MQTT, JT808]",
	} {
		if !strings.Contains(spec, want) {
			t.Fatalf("OpenAPI spec missing %q", want)
		}
	}
}

func TestLiveContractDocumentationCoversSerializedFieldsAndQuality(t *testing.T) {
	// Public additions must be discoverable in both the machine contract and the
	// human-readable documentation, including their null/quality companions.
	for _, field := range []string{
		"remainingHydrogenKg", "remainingHydrogenPercent", "hydrogenRecordTime",
		"hydrogenDataStatus", "remainingHydrogenKgStatus", "remainingHydrogenPercentStatus",
		"hydrogenValueSource", "hydrogenSourceProtocol", "hydrogenStaleAfterSeconds",
		"hydrogenExpectedIntervalSeconds", "gpsFixStatus", "locationRecordTime",
		"coordinateSystem", "statisticsStartTime", "statisticsEndTime",
		"updatedAt", "calculationPhase", "qualityStatus", "algorithmVersion",
	} {
		if !strings.Contains(string(openAPISpec), field+":") {
			t.Errorf("OpenAPI missing live contract field %s", field)
		}
		if !strings.Contains(string(simpleDocsHTML), field) {
			t.Errorf("HTML missing live contract field %s", field)
		}
	}
	for name, doc := range map[string]string{"OpenAPI": string(openAPISpec), "HTML": string(simpleDocsHTML)} {
		for _, boundary := range []string{"PARTIAL", "UNSUPPORTED", "UNKNOWN", "PRELIMINARY", "FINAL", "SUSPECT", "REPORTED", "共同快照", "null"} {
			if !strings.Contains(doc, boundary) {
				t.Errorf("%s missing availability/comparability boundary %q", name, boundary)
			}
		}
	}
	if strings.Contains(string(openAPISpec), "MEASURED") || strings.Contains(string(simpleDocsHTML), "MEASURED") {
		t.Error("reported hydrogen must not promise a measured terminal value")
	}
	if strings.Contains(string(simpleDocsHTML), "新接入请使用 sourceProtocol") {
		t.Error("HTML must not advertise sourceProtocol as realtime field")
	}
}