# Variable Context Manager

### How to use it

First create context by importing VCM which will be default context

```ts
VCM.createContext("test");
```

To create a new context manager instance, instead of using default one. Create instance for context manager and create context.

```ts
const ctx = new ContextManager();
```

### How to set variables in store.

We have two stores.

- Global store - which is unique for entire context. i.e for "VCM" it will be one global store. On createContext, two other stores will be created for each context.
- Environment store - which will have least priority in the context
- Variable store - which will have highest priority in the context

To set variables on global context

```ts
VCM.getGlobalContext().setVariable("env", "prod");
```

To set variables on variable context. Both `set` and `setVariable` can be used.

```ts
VCM.createContext("contextA").setVariable("user", "Alice");
VCM.createContext("contextA").set("user", "Alice");
VCM.getContext("contextA")?.setVariable("userJson", {
  name: "Alice",
  address: { city: "London", country: "UK" },
});
```

To get variable

```ts
VCM.createContext("contextA").setVariable("user", "Alice");
VCM.getContext("contextA").getValue("content-type") -> which return value
VCM.getContext("contextA").get("content-type") -> which return object, which have value and isSecret key.
```

To resolve variable. which will check variable store, environment store then global store.

```ts
VCM.resolve("testContext", input);
```

To get context

```ts
VCM.getContext("test")?.getAll(); -> Get all stores within the context, which will not give global variable
VCM.getContext("test")?.getEnvStore(); Get environment stores within the mentioned context
VCM.getContext("test")?.getVarStore(); Get Variable store within the mentioned context
```