package webui

import (
	"context"
	"reflect"
	"testing"
	"time"

	"bee/audit/internal/app"
	"bee/audit/internal/platform"
	"bee/audit/internal/schema"
)

func TestIntersectSortedInts(t *testing.T) {
	got := intersectSortedInts([]int{0, 1, 2, 3, 4, 5, 6, 7}, []int{5, 1, 9})
	if want := []int{1, 5}; !reflect.DeepEqual(got, want) {
		t.Fatalf("intersectSortedInts=%v want %v", got, want)
	}
	if got := intersectSortedInts([]int{0, 1}, []int{9}); len(got) != 0 {
		t.Fatalf("want empty, got %v", got)
	}
}

func TestWaitForNvidiaReadyDoesNotTreatLoadedDriverAsEnumeration(t *testing.T) {
	oldWait, oldPoll := gpuReadyWait, gpuReadyPollInterval
	oldHealth, oldList := apiRuntimeHealthNow, apiListNvidiaGPUs
	gpuReadyWait, gpuReadyPollInterval = 5*time.Millisecond, time.Millisecond
	apiRuntimeHealthNow = func(*app.App) (schema.RuntimeHealth, error) {
		return schema.RuntimeHealth{DriverReady: true}, nil
	}
	apiListNvidiaGPUs = func(*app.App) ([]platform.NvidiaGPU, error) { return nil, nil }
	t.Cleanup(func() {
		gpuReadyWait, gpuReadyPollInterval = oldWait, oldPoll
		apiRuntimeHealthNow, apiListNvidiaGPUs = oldHealth, oldList
	})

	_, gpus, ready := (&handler{opts: HandlerOptions{App: app.New(&platform.System{})}}).waitForNvidiaReady(context.Background())
	if ready || len(gpus) != 0 {
		t.Fatalf("ready=%v gpus=%v; loaded module without enumerated GPUs must not be ready", ready, gpus)
	}
}

func TestWaitForNvidiaReadyReturnsFreshEnumeration(t *testing.T) {
	oldWait, oldPoll := gpuReadyWait, gpuReadyPollInterval
	oldHealth, oldList := apiRuntimeHealthNow, apiListNvidiaGPUs
	gpuReadyWait, gpuReadyPollInterval = 20*time.Millisecond, time.Millisecond
	apiRuntimeHealthNow = func(*app.App) (schema.RuntimeHealth, error) {
		return schema.RuntimeHealth{DriverReady: true, CUDAReady: true}, nil
	}
	calls := 0
	apiListNvidiaGPUs = func(*app.App) ([]platform.NvidiaGPU, error) {
		calls++
		if calls < 2 {
			return nil, nil
		}
		return []platform.NvidiaGPU{{Index: 3}}, nil
	}
	t.Cleanup(func() {
		gpuReadyWait, gpuReadyPollInterval = oldWait, oldPoll
		apiRuntimeHealthNow, apiListNvidiaGPUs = oldHealth, oldList
	})

	health, gpus, ready := (&handler{opts: HandlerOptions{App: app.New(&platform.System{})}}).waitForNvidiaReady(context.Background())
	if !ready || !health.CUDAReady || len(gpus) != 1 || gpus[0].Index != 3 {
		t.Fatalf("ready=%v health=%+v gpus=%v", ready, health, gpus)
	}
}

// On a host with no GPU and no TPM the plan is the base checks plus a note
// that TPM was skipped, and no GPU tasks are invented.
func TestPlanSATRunAllNoAcceleratorNoTPM(t *testing.T) {
	oldWait := gpuReadyWait
	gpuReadyWait = 10 * time.Millisecond
	t.Cleanup(func() { gpuReadyWait = oldWait })

	h := &handler{opts: HandlerOptions{App: app.New(&platform.System{})}}
	specs, notes := h.planSATRunAll(context.Background(), satRunAllRequest{})

	var targets []string
	for _, s := range specs {
		targets = append(targets, s.target)
	}
	want := []string{"cpu", "memory", "storage", "pcie-link"}
	if !reflect.DeepEqual(targets, want) {
		t.Fatalf("targets=%v want %v", targets, want)
	}
	if len(notes) == 0 {
		t.Fatalf("expected a note about TPM being skipped")
	}
}