# API

**Assembly:** `Spark.Professions` **Interface:** `IProfessionsPlugin` **Implementation:** `ProfessionsPlugin`

## Interface

```csharp
public interface IProfessionsPlugin
{
    void LearnProfession(string entityId, string professionId,
        GameObject source = null);
    bool IsProfessionLearned(string entityId, string professionId);
    List<string> GetLearnedProfessions(string entityId);
}
```

## Methods

### LearnProfession

```csharp
void LearnProfession(string entityId, string professionId,
    GameObject source = null)
```

Grants a profession to an entity. Publishes both `ProfessionLearnedEvent` and `ProfessionUnlockedEvent`. Professions are permanent once learned.

### IsProfessionLearned

```csharp
bool IsProfessionLearned(string entityId, string professionId)
```

Returns `true` if the entity has learned the specified profession.

### GetLearnedProfessions

```csharp
List<string> GetLearnedProfessions(string entityId)
```

Returns all profession IDs the entity has learned.

## ProfessionEntry

Extends `SparkDatabaseEntry`. Defines a profession (Blacksmithing, Alchemy, etc.).

The entry is intentionally minimal. Profession depth comes from extensions added by other plugins.

## Events

| Event                     | Fields                                    | Description         |
| ------------------------- | ----------------------------------------- | ------------------- |
| `ProfessionLearnedEvent`  | EntityId, ProfessionId, Source, Timestamp | Profession learned  |
| `ProfessionUnlockedEvent` | EntityId, ProfessionId, Source, Timestamp | Profession unlocked |

Both events are published when a profession is learned.

## Trigger Types

| Trigger                      | Description                                   |
| ---------------------------- | --------------------------------------------- |
| `LearnProfessionTriggerType` | Grants a profession via trigger system        |
| `AddProfessionTriggerType`   | Alternative trigger for granting a profession |

## Save Data

### ProfessionsSaveData

Extends `SaveDataEntry`.

| Field                  | Type          | Description             |
| ---------------------- | ------------- | ----------------------- |
| `learnedProfessionIds` | List\<string> | All learned professions |

**Methods:**

```csharp
void LearnProfession(string professionId)
bool IsProfessionLearned(string professionId)
List<string> GetLearnedProfessions()
```

There is no method to unlearn a profession. Once learned, professions are permanent.

## Usage

```csharp
var professions = Spark.GetPlugin<IProfessionsPlugin>();
if (professions != null)
{
    // Learn a profession
    professions.LearnProfession(entityId, "blacksmithing");

    // Check if learned
    bool canSmith = professions.IsProfessionLearned(entityId, "blacksmithing");

    // List all learned professions
    var all = professions.GetLearnedProfessions(entityId);
}
```


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