# Service Method Fixes for Procedure Creation

## Problem
The procedure creation components (`CreateProcedureBulk.tsx`, `CreateProcedure.tsx`, `UpdateProcedure.tsx`) were not loading categories and subcategories because the service methods were returning paginated objects instead of arrays.

## Root Cause
The procedure service was calling paginated methods that return objects like `{ categories, lastVisible }` instead of filter methods that return arrays like `Category[]`.

## Changes Made

### 1. Added Missing Methods

#### CategoryService
- **Added**: `getAllForFilterByFamily(family: ProcedureFamily): Promise<Category[]>`
- **Added**: Interface `ICategoryService` in `category.types.ts`
- **Modified**: `CategoryService` now implements `ICategoryService`

#### TechnologyService  
- **Added**: `getAllForFilterBySubcategory(subcategoryId: string): Promise<Technology[]>`
- **Modified**: Added method to `ITechnologyService` interface
- **Modified**: `TechnologyService` implements `ITechnologyService`

#### ProductService
- **Added**: `getAllByTechnology(technologyId: string): Promise<Product[]>`
- **Modified**: Added method to `IProductService` interface

### 2. Updated Procedure Service Calls

Changed from paginated methods to filter methods:

```typescript
// Before (returned { categories, lastVisible })
await getCategoryService().getAllByFamily(family)

// After (returns Category[])
await getCategoryService().getAllForFilterByFamily(family)
```

```typescript
// Before (returned { subcategories, lastVisible })
await getSubcategoryService().getAllByCategoryId(id)

// After (returns Subcategory[])
await getSubcategoryService().getAllForFilterByCategoryId(id)
```

```typescript
// Before (returned { technologies, lastVisible })
await getTechnologyService().getAllBySubcategoryId(id)

// After (returns Technology[])
await getTechnologyService().getAllForFilterBySubcategory(id)
```

```typescript
// Before (method didn't exist)
await getProductService().getAllByTechnology(technologyId)

// After (returns Product[])
await getProductService().getAllByTechnology(technologyId)
```

### 3. Service Method Patterns

#### Paginated Methods (for admin UI with pagination)
- Return: `{ items: T[], lastVisible: DocumentData }`
- Example: `getAllByFamily()`, `getAllByCategoryId()`, `getAllBySubcategoryId()`

#### Filter Methods (for dropdowns/filters)  
- Return: `T[]`
- Example: `getAllForFilter()`, `getAllForFilterByFamily()`, `getAllForFilterByCategoryId()`

## Files Modified

### API (Backend)
- `Api/src/backoffice/services/category.service.ts`
- `Api/src/backoffice/services/technology.service.ts`
- `Api/src/backoffice/services/product.service.ts`
- `Api/src/backoffice/types/category.types.ts`
- `Api/src/backoffice/types/technology.types.ts`
- `Api/src/backoffice/types/product.types.ts`

### Client App
- `ClinicApp/src/store/procedure/procedure.service.ts`

## Expected Result
Categories, subcategories, technologies, and products should now load correctly in:
- Create Procedure Bulk form
- Create Procedure form  
- Update Procedure form

The dropdowns should populate with the correct options when selecting families, categories, subcategories, and technologies.

## Testing
1. Navigate to Create Procedure Bulk
2. Select a family (Aesthetics/Surgery) - categories should load
3. Select a category - subcategories should load
4. Select a subcategory - technologies should load
5. Select a technology - products should load and qualified practitioners should appear

## Note
If TypeScript errors persist about missing methods, the API package may need to be rebuilt (`npm run build` in the Api directory) for the type definitions to be updated in the consuming client application.
