package clusteradmin

import (
	"bytes"
	"context"
	"encoding/json"
	"strings"
	"testing"
	"time"

	"net/http"
	"net/http/httptest"

	"forgejo.digital-droplets.de/philschlo/proxui/platform/cluster"
)

func TestCreateClusterDoesNotReturnTokenSecret(t *testing.T) {
	repository := newStubRepository()
	handler := NewHandler(repository)

	req := httptest.NewRequest(http.MethodPost, "/internal/clusters", strings.NewReader(`{
		"name": "Lab",
		"api_endpoint": "https://pve.example.test:8006/api2/json",
		"tls_fingerprint": "AA:BB",
		"token_id": "root@pam!proxui",
		"token_secret": "secret-token"
	}`))
	rec := httptest.NewRecorder()

	handler.CreateCluster(rec, req)

	if rec.Code != http.StatusCreated {
		t.Fatalf("status = %d, want %d", rec.Code, http.StatusCreated)
	}
	if repository.saved.TokenSecret != "secret-token" {
		t.Fatalf("saved token secret = %q", repository.saved.TokenSecret)
	}
	if bytes.Contains(rec.Body.Bytes(), []byte("secret-token")) {
		t.Fatal("response contains token secret")
	}

	var response clusterResponse
	if err := json.Unmarshal(rec.Body.Bytes(), &response); err != nil {
		t.Fatalf("unmarshal response: %v", err)
	}
	if response.TokenID != "root@pam!proxui" {
		t.Fatalf("TokenID = %q, want root@pam!proxui", response.TokenID)
	}
}

func TestUpdateClusterUsesPathIDAndRotatesToken(t *testing.T) {
	repository := newStubRepository()
	handler := NewHandler(repository)

	req := httptest.NewRequest(http.MethodPut, "/internal/clusters/cluster-1", strings.NewReader(`{
		"name": "Lab",
		"api_endpoint": "https://pve.example.test:8006/api2/json",
		"tls_fingerprint": "AA:BB",
		"token_id": "root@pam!proxui",
		"token_secret": "rotated-token",
		"status": "active"
	}`))
	req.SetPathValue("clusterID", "cluster-1")
	rec := httptest.NewRecorder()

	handler.UpdateCluster(rec, req)

	if rec.Code != http.StatusOK {
		t.Fatalf("status = %d, want %d", rec.Code, http.StatusOK)
	}
	if repository.saved.ID != "cluster-1" {
		t.Fatalf("saved ID = %q, want cluster-1", repository.saved.ID)
	}
	if repository.saved.TokenSecret != "rotated-token" {
		t.Fatalf("saved token secret = %q", repository.saved.TokenSecret)
	}
	if bytes.Contains(rec.Body.Bytes(), []byte("rotated-token")) {
		t.Fatal("response contains rotated token secret")
	}
}

func TestSetClusterStatus(t *testing.T) {
	repository := newStubRepository()
	handler := NewHandler(repository)

	req := httptest.NewRequest(http.MethodPatch, "/internal/clusters/cluster-1/status", strings.NewReader(`{"status":"disabled"}`))
	req.SetPathValue("clusterID", "cluster-1")
	rec := httptest.NewRecorder()

	handler.SetClusterStatus(rec, req)

	if rec.Code != http.StatusOK {
		t.Fatalf("status = %d, want %d", rec.Code, http.StatusOK)
	}
	if repository.statusID != "cluster-1" {
		t.Fatalf("status ID = %q, want cluster-1", repository.statusID)
	}
	if repository.status != "disabled" {
		t.Fatalf("status = %q, want disabled", repository.status)
	}
}

func TestSetClusterStatusReturnsNotFound(t *testing.T) {
	repository := newStubRepository()
	repository.statusFound = false
	handler := NewHandler(repository)

	req := httptest.NewRequest(http.MethodPatch, "/internal/clusters/missing/status", strings.NewReader(`{"status":"disabled"}`))
	req.SetPathValue("clusterID", "missing")
	rec := httptest.NewRecorder()

	handler.SetClusterStatus(rec, req)

	if rec.Code != http.StatusNotFound {
		t.Fatalf("status = %d, want %d", rec.Code, http.StatusNotFound)
	}
}

type stubRepository struct {
	saved       cluster.Cluster
	statusID    string
	status      string
	statusFound bool
}

func newStubRepository() *stubRepository {
	return &stubRepository{statusFound: true}
}

func (s *stubRepository) UpsertCluster(_ context.Context, cluster cluster.Cluster) (cluster.Cluster, error) {
	s.saved = cluster
	if cluster.ID == "" {
		cluster.ID = "cluster-1"
	}
	if cluster.Status == "" {
		cluster.Status = "active"
	}
	cluster.CreatedAt = time.Date(2026, 6, 11, 12, 0, 0, 0, time.UTC)
	return cluster, nil
}

func (s *stubRepository) SetClusterStatus(_ context.Context, id string, status string) (cluster.Cluster, bool, error) {
	s.statusID = id
	s.status = status
	if !s.statusFound {
		return cluster.Cluster{}, false, nil
	}
	return cluster.Cluster{
		ID:             id,
		Name:           "Lab",
		APIEndpoint:    "https://pve.example.test:8006/api2/json",
		TLSFingerprint: "AA:BB",
		TokenID:        "root@pam!proxui",
		Status:         status,
		CreatedAt:      time.Date(2026, 6, 11, 12, 0, 0, 0, time.UTC),
	}, true, nil
}