package api

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

	"browser.local/platform/domain"
	"browser.local/platform/dto"
)

func TestRunControlAPIHelloHeartbeatWorkflow(t *testing.T) {
	router := newTestRouter()

	helloRecorder := performJSON(t, router, http.MethodPost, "/api/v1/run/control/hello", validRunControlHelloRequest())
	assertStatus(t, helloRecorder, http.StatusOK)
	hello := decodeBody[dto.RunControlHelloResponse](t, helloRecorder)
	if !hello.Accepted || hello.SessionToken == "" || hello.RunEndpointID != "run-local" {
		t.Fatalf("expected accepted hello response, got %+v", hello)
	}

	endpoint := getJSON[dto.RunEndpointResponse](t, router, "/api/v1/run/endpoints/run-local")
	if endpoint.Status != domain.RunEndpointStatusOnline || len(endpoint.Capabilities) != 2 {
		t.Fatalf("expected registered endpoint metadata, got %+v", endpoint)
	}

	heartbeatRecorder := performJSON(t, router, http.MethodPost, "/api/v1/run/control/heartbeat", dto.RunControlHeartbeatRequest{
		RunEndpointID:         "run-local",
		SessionToken:          hello.SessionToken,
		Version:               "0.1.1",
		Status:                domain.RunEndpointStatusOnline,
		CapabilityFingerprint: "cap-v2",
		Capacity: dto.RunCapacityResponse{
			MaxJobs:     4,
			RunningJobs: 1,
		},
	})
	assertStatus(t, heartbeatRecorder, http.StatusOK)
	heartbeat := decodeBody[dto.RunControlHeartbeatResponse](t, heartbeatRecorder)
	if !heartbeat.Accepted || !heartbeat.RefreshCapabilities || heartbeat.NextHeartbeatSeconds <= 0 {
		t.Fatalf("expected accepted heartbeat with refresh, got %+v", heartbeat)
	}
}

func TestRunLifecycleReportAPIProjectsServerState(t *testing.T) {
	router := newTestRouter()
	adminSession := createAdminSession(t, router)
	postJSON[dto.GamePluginResponse](t, router, "/api/v1/game-plugins", validGamePluginRequest())
	helloRequest := validRunControlHelloRequest()
	helloRequest.CapabilityReport.Capabilities = append(helloRequest.CapabilityReport.Capabilities, domain.LifecycleCapabilityInstall, domain.LifecycleCapabilityStart, domain.LifecycleCapabilityStop, "logs.read")
	helloRequest.CapabilityReport.Fingerprint = "cap-lifecycle-report"
	hello := decodeBody[dto.RunControlHelloResponse](t, performRunControlHello(t, router, helloRequest))
	server := postJSONWithAuth[dto.ServerInstanceResponse](t, router, "/api/v1/server-instances", dto.ServerInstanceCreateRequest{ID: "server-lifecycle-report-api", PluginID: "server.scum", RunEndpointID: "run-local", Name: "Lifecycle Report API", State: domain.ServerInstanceStateReady}, adminSession)

	recorder := performJSON(t, router, http.MethodPost, "/api/v1/run/lifecycle/report", dto.RunLifecycleReportRequest{RunEndpointID: "run-local", SessionToken: hello.SessionToken, ServerInstanceID: server.ID, Capability: domain.LifecycleCapabilityStart, State: domain.JobStateSucceeded, Progress: dto.JobProgressBody{Percent: 100, Message: "autonomous start complete"}, Message: "autonomous start complete", ExecutionResult: dto.RunJobExecutionResultBody{Kind: "process", ProcessState: "running", Summary: "private supervised process identity"}})
	assertStatus(t, recorder, http.StatusOK)
	response := decodeBody[dto.RunLifecycleReportResponse](t, recorder)
	if !response.Accepted || response.ProjectedState != domain.ServerInstanceStateRunning {
		t.Fatalf("expected lifecycle report projection, got %+v", response)
	}
	updated := getJSONWithAuth[dto.ServerInstanceResponse](t, router, "/api/v1/server-instances/"+server.ID, adminSession)
	if updated.State != domain.ServerInstanceStateRunning {
		t.Fatalf("expected server state projected running, got %+v", updated)
	}
}

func TestRunControlAPIReRegistrationRotatesToken(t *testing.T) {
	router := newTestRouter()
	first := decodeBody[dto.RunControlHelloResponse](t, performRunControlHello(t, router, validRunControlHelloRequest()))

	request := validRunControlHelloRequest()
	request.Version = "0.2.0"
	second := decodeBody[dto.RunControlHelloResponse](t, performRunControlHello(t, router, request))
	if second.SessionToken == first.SessionToken {
		t.Fatalf("expected new session token after re-registration, got %q", second.SessionToken)
	}
}

func TestRunControlAPIErrors(t *testing.T) {
	router := newTestRouter()

	invalid := validRunControlHelloRequest()
	invalid.RegistrationToken = ""
	invalid.Capacity.RunningJobs = 8
	invalid.Capacity.MaxJobs = 4
	invalidHello := performJSON(t, router, http.MethodPost, "/api/v1/run/control/hello", invalid)
	assertErrorResponse(t, invalidHello, http.StatusBadRequest, errorCodeValidation)

	hello := decodeBody[dto.RunControlHelloResponse](t, performRunControlHello(t, router, validRunControlHelloRequest()))
	invalidHeartbeat := performJSON(t, router, http.MethodPost, "/api/v1/run/control/heartbeat", dto.RunControlHeartbeatRequest{
		RunEndpointID:         "run-local",
		SessionToken:          "stale-token",
		Version:               "0.1.1",
		Status:                domain.RunEndpointStatusOnline,
		CapabilityFingerprint: "cap-v1",
		Capacity:              dto.RunCapacityResponse{MaxJobs: 4},
	})
	assertErrorResponse(t, invalidHeartbeat, http.StatusBadRequest, errorCodeValidation)

	validHeartbeat := performJSON(t, router, http.MethodPost, "/api/v1/run/control/heartbeat", dto.RunControlHeartbeatRequest{
		RunEndpointID:         "run-local",
		SessionToken:          hello.SessionToken,
		Version:               "0.1.1",
		Status:                domain.RunEndpointStatusOnline,
		CapabilityFingerprint: "cap-v1",
		Capacity:              dto.RunCapacityResponse{MaxJobs: 4},
	})
	assertStatus(t, validHeartbeat, http.StatusOK)

	methodFailure := performRaw(t, router, http.MethodGet, "/api/v1/run/control/hello", "")
	assertErrorResponse(t, methodFailure, http.StatusMethodNotAllowed, errorCodeMethodNotAllowed)
}

func performRunControlHello(t *testing.T, router http.Handler, request dto.RunControlHelloRequest) *httptest.ResponseRecorder {
	t.Helper()
	recorder := performJSON(t, router, http.MethodPost, "/api/v1/run/control/hello", request)
	assertStatus(t, recorder, http.StatusOK)
	return recorder
}

func validRunControlHelloRequest() dto.RunControlHelloRequest {
	return dto.RunControlHelloRequest{
		RegistrationToken: "registration-token",
		RunEndpointID:     "run-local",
		DisplayName:       "Local Run",
		Version:           "0.1.0",
		Status:            domain.RunEndpointStatusOnline,
		Platform:          "darwin/arm64",
		CapabilityReport: dto.RunCapabilityReport{
			Capabilities: []string{"control.hello", "control.heartbeat"},
			Fingerprint:  "cap-v1",
		},
		Capacity: dto.RunCapacityResponse{MaxJobs: 4},
	}
}