unleash.unleash/docs/api/strategies-api.md

## Strategies API

### Fetch Strategies 
`GET: http://unleash.host.com/api/strategies`

Used to fetch all defined strategies and their defined paramters. 

**Response**

 ```json
{
    "version": 1,
    "strategies": [
        {
            "name": "default",
            "description": "Default on/off strategy.",
            "parameters": []
        },
        {
            "name": "userWithId",
            "description": "Active for userId specified in the comma seperated 'userIds' parameter.",
            "parameters": [
                {
                    "name": "userIds",
                    "type": "list",
                    "description": "List of unique userIds the feature should be active for.",
                    "required": true
                }
            ]
        },
        {
            "name": "gradualRollout",
            "description": "Gradual rollout to logged in users",
            "parameters": [
                {
                    "name": "percentage",
                    "type": "percentage",
                    "description": "How many percent should the new feature be active for.",
                    "required": false
                },
                {
                    "name": "group",
                    "type": "string",
                    "description": "Group key to use when hasing the userId. Makes sure that the same user get different value for different groups",
                    "required": false
                }
            ]
        },
    ]}
```

### Create strategy

`POST: http://unleash.host.com/api/strategies`

**Body**

```json
{
    "name": "gradualRollout",
    "description": "Gradual rollout to logged in users",
    "parameters": [
        {
            "name": "percentage",
            "type": "percentage",
            "description": "How many percent should the new feature be active for.",
            "required": false
        },
        {
            "name": "group",
            "type": "string",
            "description": "Group key to use when hasing the userId. Makes sure that the same user get different value for different groups",
            "required": false
        }
    ]
},
```

Used to create a new Strategy. Name is required and must be unique. It is also required to have a parameters array, but it can be empty. 


### Update strategy

`PUT: http://unleash.host.com/api/strategies/:name`

**Body**

```json
{
    "name": "gradualRollout",
    "description": "Gradual rollout to logged in users with updated desc",
    "parameters": [
        {
            "name": "percentage",
            "type": "percentage",
            "description": "How many percent should the new feature be active for.",
            "required": false
        },
        {
            "name": "group",
            "type": "string",
            "description": "Group key to use when hasing the userId. Makes sure that the same user get different value for different groups",
            "required": false
        }
    ]
},
```

Used to update a Strategy definition. Name can't be changed. 
**PS! I can be dangerous to change a implemnted strategy as the implementation also might need to be changed**