Precondition

scenario1.json

{
    "name": "Sample for precondition",
    "actions": [
        {
            "if":{
                "equals": {
                    "left":{
                        "string": "pushed"
                    },
                    "right":{
                        "device":{
                            "devices":["button-device-id"],
                            "component": "main",
                            "capability":"button",
                            "attribute":"button",
                            "trigger":"Always"
                        }
                    }
                }, 
                "then":[
                    {
                        "if": {
                            "equals": {
                                "left": {
                                    "device": {
                                        "devices": [
                                            "switch1-device-id"
                                        ],
                                        "component": "main",
                                        "capability": "switch",
                                        "attribute": "switch",
                                        "trigger":"Never"
                                    }
                                },
                                "right": {
                                    "string": "on"
                                }
                            },"then":[
                            {
                                "command": {
                                    "devices": [
                                        "switch2-device-id"
                                    ],
                                    "commands": [
                                        {
                                            "component": "main",
                                            "capability": "switch",
                                            "command": "on",
                                            "arguments": []
                                        }
                                    ]
                                }
                            }],"else":[{
                                "command": {
                                    "devices": [
                                        "switch2-device-id"
                                    ],
                                    "commands": [
                                        {
                                            "component": "main",
                                            "capability": "switch",
                                            "command": "off",
                                            "arguments": []
                                        }
                                    ]
                                }
                            }]
                        }
                    }
                ]
            }
        }
    ]
}

scenario2.json

{
    "name": "Sample for precondition scenario 2",
    "actions": [
        {
            "if": {
                "and": [
                    {
                        "equals": {
                            "left": {
                                "string": "pushed"
                            },
                            "right": {
                                "device": {
                                    "devices": [
                                        "button-device-id"
                                    ],
                                    "component": "main",
                                    "capability": "button",
                                    "attribute": "button"
                                }
                            }
                        }
                    },
                    {
                        "equals": {
                            "left": {
                                "device": {
                                    "devices": [
                                        "switch1-device-id"
                                    ],
                                    "component": "main",
                                    "capability": "switch",
                                    "attribute": "switch",
                                    "trigger": "Never"
                                }
                            },
                            "right": {
                                "string": "on"
                            }
                        }
                    }
                ],
                "then": [
                    {
                        "command": {
                            "devices": [
                                "switch2-device-id"
                            ],
                            "commands": [
                                {
                                    "component": "main",
                                    "capability": "switch",
                                    "command": "on"
                                }
                            ]
                        }
                    }
                ],
                "else": [
                    {
                        "command": {
                            "devices": [
                                "switch2-device-id"
                            ],
                            "commands": [
                                {
                                    "component": "main",
                                    "capability": "switch",
                                    "command": "off"
                                }
                            ]
                        }
                    }
                ]
            }
        }
    ]
}