package handler

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

	"github.com/DATA-DOG/go-sqlmock"
	"github.com/gin-gonic/gin"
	"gorm.io/driver/postgres"
	"gorm.io/gorm"
)

func TestCanAccessRoomAdmin(t *testing.T) {
	gin.SetMode(gin.TestMode)
	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Set("user", map[string]interface{}{"sub": "admin-1", "role": "admin"})
	roomID := "room-1"
	if !canAccessRoom(nil, c, &roomID) {
		t.Fatal("admin should have global object access")
	}
}

func TestCanAccessRoomMissingUser(t *testing.T) {
	gin.SetMode(gin.TestMode)
	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	roomID := "room-1"
	if canAccessRoom(nil, c, &roomID) {
		t.Fatal("missing user should not pass room access")
	}
}

func TestApplyRoomScopeUsesOrganizationMembership(t *testing.T) {
	gin.SetMode(gin.TestMode)
	sqlDB, mock, err := sqlmock.New()
	if err != nil {
		t.Fatalf("create sqlmock: %v", err)
	}
	defer sqlDB.Close()
	db, err := gorm.Open(postgres.New(postgres.Config{Conn: sqlDB}), &gorm.Config{})
	if err != nil {
		t.Fatalf("open gorm: %v", err)
	}
	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Set("user", map[string]interface{}{"sub": "user-1", "role": "viewer"})

	mock.ExpectQuery(".*CAST\\(room_id AS text\\).*organization_members.*").
		WithArgs("user-1").
		WillReturnRows(sqlmock.NewRows([]string{"id", "name", "org_id"}))

	var rooms []map[string]interface{}
	q := applyRoomScope(db.Model(&struct{}{}).Table("rooms"), c, "room_id")
	if err := q.Find(&rooms).Error; err != nil {
		t.Fatalf("scoped query failed: %v", err)
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatalf("unmet sql expectations: %v", err)
	}
}

func TestCanAccessDeviceKeyAdmin(t *testing.T) {
	gin.SetMode(gin.TestMode)
	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Set("user", map[string]interface{}{"sub": "admin-1", "role": "admin"})
	if !canAccessDeviceKey(nil, c, "device-a") {
		t.Fatal("admin should have global device access")
	}
}

func TestCanAccessDeviceKeyMissingUser(t *testing.T) {
	gin.SetMode(gin.TestMode)
	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	if canAccessDeviceKey(nil, c, "device-a") {
		t.Fatal("missing user should not pass device access")
	}
}

func TestObjectRoomIDSensorResolvesThroughDevice(t *testing.T) {
	gin.SetMode(gin.TestMode)
	sqlDB, mock, err := sqlmock.New()
	if err != nil {
		t.Fatalf("create sqlmock: %v", err)
	}
	defer sqlDB.Close()
	db, err := gorm.Open(postgres.New(postgres.Config{Conn: sqlDB}), &gorm.Config{})
	if err != nil {
		t.Fatalf("open gorm: %v", err)
	}

	mock.ExpectQuery(`.*FROM "sensors".*WHERE id = \$1.*`).
		WillReturnRows(sqlmock.NewRows([]string{"id", "name", "metric", "unit", "data_type", "device_id", "created_at"}).
			AddRow("sensor-1", "温度", "temperature", nil, nil, "device-1", time.Now()))
	mock.ExpectQuery(`.*FROM "devices".*WHERE id = \$1.*`).
		WillReturnRows(sqlmock.NewRows([]string{"id", "device_key", "name", "kind", "model", "firmware", "online_status", "last_seen", "room_id", "topic", "created_at", "updated_at"}).
			AddRow("device-1", "device-a", "温度设备", "sensor", nil, nil, "online", nil, "room-1", nil, time.Now(), time.Now()))

	roomID, ok := objectRoomID(db, "sensor", "sensor-1")
	if !ok || roomID == nil || *roomID != "room-1" {
		t.Fatalf("sensor room = %v, ok = %v, want room-1", roomID, ok)
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatalf("unmet sql expectations: %v", err)
	}
}

func TestRequireObjectAccessForbiddenForForeignDevice(t *testing.T) {
	gin.SetMode(gin.TestMode)
	sqlDB, mock, err := sqlmock.New()
	if err != nil {
		t.Fatalf("create sqlmock: %v", err)
	}
	defer sqlDB.Close()
	db, err := gorm.Open(postgres.New(postgres.Config{Conn: sqlDB}), &gorm.Config{})
	if err != nil {
		t.Fatalf("open gorm: %v", err)
	}
	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Set("user", map[string]interface{}{"sub": "user-1", "role": "viewer"})

	mock.ExpectQuery(`.*FROM "devices".*WHERE id = \$1.*`).
		WillReturnRows(sqlmock.NewRows([]string{"id", "device_key", "name", "kind", "model", "firmware", "online_status", "last_seen", "room_id", "topic", "created_at", "updated_at"}).
			AddRow("device-1", "device-a", "温度设备", "sensor", nil, nil, "online", nil, "room-1", nil, time.Now(), time.Now()))
	mock.ExpectQuery(`.*FROM "rooms".*organization_members.*`).
		WithArgs("room-1", "user-1").
		WillReturnRows(sqlmock.NewRows([]string{"count"}).AddRow(0))

	if requireObjectAccess(c, db, "device", "device-1") {
		t.Fatal("foreign device should not pass object access")
	}
	if rec.Code != 403 {
		t.Fatalf("status = %d, want 403", rec.Code)
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatalf("unmet sql expectations: %v", err)
	}
}

func TestFirstAccessibleRoomIDUsesOrgScope(t *testing.T) {
	gin.SetMode(gin.TestMode)
	sqlDB, mock, err := sqlmock.New()
	if err != nil {
		t.Fatalf("create sqlmock: %v", err)
	}
	defer sqlDB.Close()
	db, err := gorm.Open(postgres.New(postgres.Config{Conn: sqlDB}), &gorm.Config{})
	if err != nil {
		t.Fatalf("open gorm: %v", err)
	}
	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Set("user", map[string]interface{}{"sub": "user-1", "role": "viewer"})

	mock.ExpectQuery(`.*FROM "rooms".*CAST\(org_id AS text\).*organization_members.*`).
		WillReturnRows(sqlmock.NewRows([]string{"id", "name", "code", "location", "description", "capacity", "stage", "region", "org_id", "status", "created_at", "updated_at"}).
			AddRow("room-1", "一号蚕房", nil, nil, nil, nil, nil, nil, "org-1", "active", time.Now(), time.Now()))

	roomID := firstAccessibleRoomID(db, c)
	if roomID == nil || *roomID != "room-1" {
		t.Fatalf("first accessible room = %v, want room-1", roomID)
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatalf("unmet sql expectations: %v", err)
	}
}